3:10 a.m.
Which version of drools is this?
For drools 5.0.1 we just use maven to resolve the dependencies for us and it works fine. I
can't obviously see any eclipse compiler in the jars that we distribute with our
application.
Thomas
-----Original Message-----
From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-
bounces(a)lists.jboss.org] On Behalf Of Abhay B. Chaware
Sent: 09 June 2011 08:06
To: rules-users(a)lists.jboss.org
Subject: [rules-users] Drools in non-eclipse environment
Has anyone tried using drools in non-eclipse env ? meaning that
org.eclipse.jdt.core_3.5.1.v_972_R35x.jar is not in the classpath ?
Documentation says this :
(http://docs.huihoo.com/drools/4.0.7/ch02s05.html)
if you do not have Eclipse JDT Core in your classpath you must override the
compiler setting before you instantiate this PackageBuilder, you can either
do that with a packagebuilder properties file the ChainedProperties class will
find, or you can do it programmatically as shown below; note this time I use
properties to inject the value for startup.
They also provide an example, but I am not able to figure out exactly how to
use this example/info.
Here is my code :
KnowledgeBuilder kbuilder =
KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(ResourceFactory.newInputStreamResource(is),
ResourceType.DRL);
where "is" is input stream containing the rule file ( .drl)
How do I override the compiler setting ?
I am getting a null pointer exception ( see below ) and I suspect that
overriding the packagebuilderconfiguration will fix it ?
W/System.err(25511): java.lang.NullPointerException
W/System.err(25511): at
org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:47)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1161)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:637)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java
:267)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder
.java:459)
W/System.err(25511): at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.ja
va:28)
W/System.err(25511): at
com.ts.DBconnector.readKnowledgeBase(DBconnector.java:146)
_______________________________________________
rules-users mailing list
rules-users(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
**************************************************************************************
This message is confidential and intended only for the addressee. If you have received
this message in error, please immediately notify the postmaster(a)nds.com and delete it from
your system as well as any copies. The content of e-mails as well as traffic data may be
monitored by NDS for employment and security purposes. To protect the environment please
do not print this e-mail unless necessary.
NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18 4EX, United
Kingdom. A company registered in England and Wales. Registered no. 3080780. VAT no. GB 603
8808 40-00
**************************************************************************************
3:29 a.m.
New subject: Drools in non-eclipse environment
I am using drools 5.1.0
Let me explain what I am trying to do. I am trying to write a drools app on to android
platform. In my app, I have added following jars in the application classpath -
antlr-runtime.jar
drools-api.jar
drools-compiler.jar
drools-core.jar
mvel2.jar
Do I need any other jar files ?
upon drilling down into the Null Pointer Exception, it appears that it is throwing NPE at
following line inside RuleBuilder.java
RuleConditionBuilder builder =
(RuleConditionBuilder)context.getDialect().getBuilder(ruleDescr.getLhs().getClass());
and on further drilling, I found that "context.getDialect()" is retuning NULL.
Then I put some debug inside PackageBuilder.java
upon drilling down for the error, found out that it is not able to set the context's
dialect.
ctr.getDialect(pkgRegistry.getDialect()) gives "null" ...
DialectCompiletimeRegistry ctr = pkgRegistry.getDialectCompiletimeRegistry();
RuleBuildContext context = new RuleBuildContext(this, ruleDescr, ctr, pkg,
ctr.getDialect(pkgRegistry.getDialect()));
Is there any default setting /configuration that I am obviously missing ?
what could be the problem ?
-abhay
________________________________________
From: rules-users-bounces(a)lists.jboss.org [rules-users-bounces(a)lists.jboss.org] On Behalf
Of Swindells, Thomas [TSwindells(a)nds.com]
Sent: Thursday, June 09, 2011 1:40 PM
To: Rules Users List
Subject: Re: [rules-users] Drools in non-eclipse environment
Which version of drools is this?
For drools 5.0.1 we just use maven to resolve the dependencies for us and it works fine. I
can't obviously see any eclipse compiler in the jars that we distribute with our
application.
Thomas
-----Original Message-----
From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-
bounces(a)lists.jboss.org] On Behalf Of Abhay B. Chaware
Sent: 09 June 2011 08:06
To: rules-users(a)lists.jboss.org
Subject: [rules-users] Drools in non-eclipse environment
Has anyone tried using drools in non-eclipse env ? meaning that
org.eclipse.jdt.core_3.5.1.v_972_R35x.jar is not in the classpath ?
Documentation says this :
(http://docs.huihoo.com/drools/4.0.7/ch02s05.html)
if you do not have Eclipse JDT Core in your classpath you must override the
compiler setting before you instantiate this PackageBuilder, you can either
do that with a packagebuilder properties file the ChainedProperties class will
find, or you can do it programmatically as shown below; note this time I use
properties to inject the value for startup.
They also provide an example, but I am not able to figure out exactly how to
use this example/info.
Here is my code :
KnowledgeBuilder kbuilder =
KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(ResourceFactory.newInputStreamResource(is),
ResourceType.DRL);
where "is" is input stream containing the rule file ( .drl)
How do I override the compiler setting ?
I am getting a null pointer exception ( see below ) and I suspect that
overriding the packagebuilderconfiguration will fix it ?
W/System.err(25511): java.lang.NullPointerException
W/System.err(25511): at
org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:47)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1161)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:637)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java
:267)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder
.java:459)
W/System.err(25511): at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.ja
va:28)
W/System.err(25511): at
com.ts.DBconnector.readKnowledgeBase(DBconnector.java:146)
_______________________________________________
rules-users mailing list
rules-users(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
**************************************************************************************
This message is confidential and intended only for the addressee. If you have received
this message in error, please immediately notify the postmaster(a)nds.com and delete it from
your system as well as any copies. The content of e-mails as well as traffic data may be
monitored by NDS for employment and security purposes. To protect the environment please
do not print this e-mail unless necessary.
NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18 4EX, United
Kingdom. A company registered in England and Wales. Registered no. 3080780. VAT no. GB 603
8808 40-00
**************************************************************************************
_______________________________________________
rules-users mailing list
rules-users(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
3:50 a.m.
New subject: Drools in non-eclipse environment
Op 09-06-11 10:29, Abhay B. Chaware schreef:
I am using drools 5.1.0
Let me explain what I am trying to do. I am trying to write a drools app on to android
platform. In my app, I have added following jars in the application classpath -
antlr-runtime.jar
drools-api.jar
drools-compiler.jar
drools-core.jar
mvel2.jar
Do I need any other jar files ?
If you precompile (using the maven-plugin of angkar out there), you only
need required the dependencies of drools-core as defined by the maven
pom.xml:
http://search.maven.org/#artifactdetails|org.drools|drools-core|5.2.0.CR1...
(ignore all dependencies with scope=test, scope=provided or
optional=true)
So no need for jdt, no need for drools-compiler, ...
But if you don't precompile, you need all required dependencies (which
includes jdt, but IIRC you exclude jdt and include janino instead) as
defined by the maven pom.xml:
http://search.maven.org/#artifactdetails|org.drools|drools-compiler|5.2.0...
(ignore all dependencies with scope=test, scope=provided or
optional=true)
Much is cleaned up for 5.2, I 'd recommend using 5.2.0.CR1 at this point
(final will be released soon).
PS: Consider declaring your dependencies with maven 3, buildr, ivy or
gradle: just adding jars to the classpath until it works is asking for
trouble.
3:59 a.m.
New subject: Drools in non-eclipse environment
If you precompile (using the maven-plugin of angkar out there),
Are any details on this plugin available? - is it this one?
http://passion.forco.de/content/maven-drools-plugin_overview
What are peoples experiences of using it?
Thanks,
Thomas
**************************************************************************************
This message is confidential and intended only for the addressee. If you have received
this message in error, please immediately notify the postmaster(a)nds.com and delete it from
your system as well as any copies. The content of e-mails as well as traffic data may be
monitored by NDS for employment and security purposes. To protect the environment please
do not print this e-mail unless necessary.
NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18 4EX, United
Kingdom. A company registered in England and Wales. Registered no. 3080780. VAT no. GB 603
8808 40-00
**************************************************************************************
4:04 a.m.
New subject: Drools in non-eclipse environment
that's the one.
If angskar is cool with it, we should pull it inside droolsjbpm-tools as
maven-drools-plugin really.
Op 09-06-11 10:59, Swindells, Thomas schreef:
> If you precompile (using the maven-plugin of angkar out there),
Are any details on this plugin available? - is it this one?
http://passion.forco.de/content/maven-drools-plugin_overview
What are peoples experiences of using it?
Thanks,
Thomas
**************************************************************************************
This message is confidential and intended only for the addressee. If you have received
this message in error, please immediately notify the postmaster(a)nds.com and delete it from
your system as well as any copies. The content of e-mails as well as traffic data may be
monitored by NDS for employment and security purposes. To protect the environment please
do not print this e-mail unless necessary.
NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18 4EX, United
Kingdom. A company registered in England and Wales. Registered no. 3080780. VAT no. GB 603
8808 40-00
**************************************************************************************
_______________________________________________
rules-users mailing list
rules-users(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
--
With kind regards,
Geoffrey De Smet
4:16 a.m.
New subject: Drools in non-eclipse environment
You might try this:
Properties props = new Properties();
props.put( "drools.dialect.java.compiler", "JANINO" );
KnowledgeBuilderConfiguration kbConfig =
KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration( props,
(ClassLoader[]) null );
Requires the janino jar in your classpath, which I have as
~/.m2/repository/janino/janino/2.5.15/janino-2.5.15.jar
-W
On 9 June 2011 10:29, Abhay B. Chaware <Abhay.Chaware(a)kpitcummins.com>wrote:
I am using drools 5.1.0
Let me explain what I am trying to do. I am trying to write a drools app
on to android platform. In my app, I have added following jars in the
application classpath -
antlr-runtime.jar
drools-api.jar
drools-compiler.jar
drools-core.jar
mvel2.jar
Do I need any other jar files ?
upon drilling down into the Null Pointer Exception, it appears that it is
throwing NPE at following line inside RuleBuilder.java
RuleConditionBuilder builder =
(RuleConditionBuilder)context.getDialect().getBuilder(ruleDescr.getLhs().getClass());
and on further drilling, I found that "context.getDialect()" is retuning
NULL.
Then I put some debug inside PackageBuilder.java
upon drilling down for the error, found out that it is not able to set the
context's dialect.
ctr.getDialect(pkgRegistry.getDialect()) gives "null" ...
DialectCompiletimeRegistry ctr =
pkgRegistry.getDialectCompiletimeRegistry();
RuleBuildContext context = new RuleBuildContext(this, ruleDescr, ctr, pkg,
ctr.getDialect(pkgRegistry.getDialect()));
Is there any default setting /configuration that I am obviously missing ?
what could be the problem ?
-abhay
________________________________________
From: rules-users-bounces(a)lists.jboss.org [
rules-users-bounces(a)lists.jboss.org] On Behalf Of Swindells, Thomas [
TSwindells(a)nds.com]
Sent: Thursday, June 09, 2011 1:40 PM
To: Rules Users List
Subject: Re: [rules-users] Drools in non-eclipse environment
Which version of drools is this?
For drools 5.0.1 we just use maven to resolve the dependencies for us and
it works fine. I can't obviously see any eclipse compiler in the jars that
we distribute with our application.
Thomas
> -----Original Message-----
> From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-
> bounces(a)lists.jboss.org] On Behalf Of Abhay B. Chaware
> Sent: 09 June 2011 08:06
> To: rules-users(a)lists.jboss.org
> Subject: [rules-users] Drools in non-eclipse environment
>
> Has anyone tried using drools in non-eclipse env ? meaning that
> org.eclipse.jdt.core_3.5.1.v_972_R35x.jar is not in the classpath ?
>
> Documentation says this :
>
> (http://docs.huihoo.com/drools/4.0.7/ch02s05.html)
>
> if you do not have Eclipse JDT Core in your classpath you must override
the
> compiler setting before you instantiate this PackageBuilder, you can
either
> do that with a packagebuilder properties file the ChainedProperties class
will
> find, or you can do it programmatically as shown below; note this time I
use
> properties to inject the value for startup.
>
> They also provide an example, but I am not able to figure out exactly how
to
> use this example/info.
>
> Here is my code :
>
> KnowledgeBuilder kbuilder =
> KnowledgeBuilderFactory.newKnowledgeBuilder();
> kbuilder.add(ResourceFactory.newInputStreamResource(is),
> ResourceType.DRL);
>
> where "is" is input stream containing the rule file ( .drl)
>
> How do I override the compiler setting ?
>
> I am getting a null pointer exception ( see below ) and I suspect that
> overriding the packagebuilderconfiguration will fix it ?
>
> W/System.err(25511): java.lang.NullPointerException
> W/System.err(25511): at
> org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:47)
> W/System.err(25511): at
> org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1161)
> W/System.err(25511): at
> org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:637)
> W/System.err(25511): at
> org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java
> :267)
> W/System.err(25511): at
> org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder
> .java:459)
> W/System.err(25511): at
> org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.ja
> va:28)
> W/System.err(25511): at
> com.ts.DBconnector.readKnowledgeBase(DBconnector.java:146)
>
>
>
> _______________________________________________
> rules-users mailing list
> rules-users(a)lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
**************************************************************************************
This message is confidential and intended only for the addressee. If you
have received this message in error, please immediately notify the
postmaster(a)nds.com and delete it from your system as well as any copies.
The content of e-mails as well as traffic data may be monitored by NDS for
employment and security purposes. To protect the environment please do not
print this e-mail unless necessary.
NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18
4EX, United Kingdom. A company registered in England and Wales. Registered
no. 3080780. VAT no. GB 603 8808 40-00
**************************************************************************************
_______________________________________________
rules-users mailing list
rules-users(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
_______________________________________________
rules-users mailing list
rules-users(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
4:59 a.m.
New subject: Drools in non-eclipse environment
How do I use this kbConfig instance of KnowledgeBuilderConfiguration ?
________________________________________
From: rules-users-bounces(a)lists.jboss.org [rules-users-bounces(a)lists.jboss.org] On Behalf
Of Wolfgang Laun [wolfgang.laun(a)gmail.com]
Sent: Thursday, June 09, 2011 2:46 PM
To: Rules Users List
Subject: Re: [rules-users] Drools in non-eclipse environment
You might try this:
Properties props = new Properties();
props.put( "drools.dialect.java.compiler", "JANINO" );
KnowledgeBuilderConfiguration kbConfig =
KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration( props, (ClassLoader[])
null );
Requires the janino jar in your classpath, which I have as
~/.m2/repository/janino/janino/2.5.15/janino-2.5.15.jar
-W
On 9 June 2011 10:29, Abhay B. Chaware
<Abhay.Chaware@kpitcummins.com<mailto:Abhay.Chaware@kpitcummins.com>> wrote:
I am using drools 5.1.0
Let me explain what I am trying to do. I am trying to write a drools app on to android
platform. In my app, I have added following jars in the application classpath -
antlr-runtime.jar
drools-api.jar
drools-compiler.jar
drools-core.jar
mvel2.jar
Do I need any other jar files ?
upon drilling down into the Null Pointer Exception, it appears that it is throwing NPE at
following line inside RuleBuilder.java
RuleConditionBuilder builder =
(RuleConditionBuilder)context.getDialect().getBuilder(ruleDescr.getLhs().getClass());
and on further drilling, I found that "context.getDialect()" is retuning NULL.
Then I put some debug inside PackageBuilder.java
upon drilling down for the error, found out that it is not able to set the context's
dialect.
ctr.getDialect(pkgRegistry.getDialect()) gives "null" ...
DialectCompiletimeRegistry ctr = pkgRegistry.getDialectCompiletimeRegistry();
RuleBuildContext context = new RuleBuildContext(this, ruleDescr, ctr, pkg,
ctr.getDialect(pkgRegistry.getDialect()));
Is there any default setting /configuration that I am obviously missing ?
what could be the problem ?
-abhay
________________________________________
From:
rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>
[rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>] On
Behalf Of Swindells, Thomas [TSwindells@nds.com<mailto:TSwindells@nds.com>]
Sent: Thursday, June 09, 2011 1:40 PM
To: Rules Users List
Subject: Re: [rules-users] Drools in non-eclipse environment
Which version of drools is this?
For drools 5.0.1 we just use maven to resolve the dependencies for us and it works fine. I
can't obviously see any eclipse compiler in the jars that we distribute with our
application.
Thomas
-----Original Message-----
From:
rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>
[mailto:rules-users-<mailto:rules-users->
bounces@lists.jboss.org<mailto:bounces@lists.jboss.org>] On Behalf Of Abhay B.
Chaware
Sent: 09 June 2011 08:06
To: rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>
Subject: [rules-users] Drools in non-eclipse environment
Has anyone tried using drools in non-eclipse env ? meaning that
org.eclipse.jdt.core_3.5.1.v_972_R35x.jar is not in the classpath ?
Documentation says this :
(http://docs.huihoo.com/drools/4.0.7/ch02s05.html)
if you do not have Eclipse JDT Core in your classpath you must override the
compiler setting before you instantiate this PackageBuilder, you can either
do that with a packagebuilder properties file the ChainedProperties class will
find, or you can do it programmatically as shown below; note this time I use
properties to inject the value for startup.
They also provide an example, but I am not able to figure out exactly how to
use this example/info.
Here is my code :
KnowledgeBuilder kbuilder =
KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(ResourceFactory.newInputStreamResource(is),
ResourceType.DRL);
where "is" is input stream containing the rule file ( .drl)
How do I override the compiler setting ?
I am getting a null pointer exception ( see below ) and I suspect that
overriding the packagebuilderconfiguration will fix it ?
W/System.err(25511): java.lang.NullPointerException
W/System.err(25511): at
org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:47)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1161)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:637)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java
:267)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder
.java:459)
W/System.err(25511): at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.ja
va:28)
W/System.err(25511): at
com.ts.DBconnector.readKnowledgeBase(DBconnector.java:146)
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>
https://lists.jboss.org/mailman/listinfo/rules-users
**************************************************************************************
This message is confidential and intended only for the addressee. If you have received
this message in error, please immediately notify the
postmaster@nds.com<mailto:postmaster@nds.com> and delete it from your system as well
as any copies. The content of e-mails as well as traffic data may be monitored by NDS for
employment and security purposes. To protect the environment please do not print this
e-mail unless necessary.
NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18 4EX, United
Kingdom. A company registered in England and Wales. Registered no. 3080780. VAT no. GB 603
8808 40-00
**************************************************************************************
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>
https://lists.jboss.org/mailman/listinfo/rules-users
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>
https://lists.jboss.org/mailman/listinfo/rules-users
5:11 a.m.
New subject: Drools in non-eclipse environment
This is what I did.
Properties properties = new Properties();
properties.put("drools.dialect.java.compiler", "JANINO");
KnowledgeBuilderConfiguration kbConfig =
KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration( properties, (ClassLoader[]) null
);
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(kbConfig);
kbuilder.add(ResourceFactory.newInputStreamResource(is), ResourceType.DRL);
I am getting same error with KnowledgeBuilderConfiguration ..
W/System.err(27303): java.lang.NullPointerException
W/System.err(27303): at org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:47)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1161)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:637)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:267)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:459)
W/System.err(27303): at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28)
W/System.err(27303): at com.ts.DBconnector.readKnowledgeBase(DBconnector.java:143)
W/System.err(27303): at com.first.FirstActivity.onCreate(FirstActivity.java:64)
W/System.err(27303): at
android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
W/System.err(27303): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
W/System.err(27303): at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
W/System.err(27303): at
android.app.ActivityThread.access$2300(ActivityThread.java:125)
________________________________________
From: rules-users-bounces(a)lists.jboss.org [rules-users-bounces(a)lists.jboss.org] On Behalf
Of Wolfgang Laun [wolfgang.laun(a)gmail.com]
Sent: Thursday, June 09, 2011 2:46 PM
To: Rules Users List
Subject: Re: [rules-users] Drools in non-eclipse environment
You might try this:
Properties props = new Properties();
props.put( "drools.dialect.java.compiler", "JANINO" );
KnowledgeBuilderConfiguration kbConfig =
KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration( props, (ClassLoader[])
null );
Requires the janino jar in your classpath, which I have as
~/.m2/repository/janino/janino/2.5.15/janino-2.5.15.jar
-W
On 9 June 2011 10:29, Abhay B. Chaware
<Abhay.Chaware@kpitcummins.com<mailto:Abhay.Chaware@kpitcummins.com>> wrote:
I am using drools 5.1.0
Let me explain what I am trying to do. I am trying to write a drools app on to android
platform. In my app, I have added following jars in the application classpath -
antlr-runtime.jar
drools-api.jar
drools-compiler.jar
drools-core.jar
mvel2.jar
Do I need any other jar files ?
upon drilling down into the Null Pointer Exception, it appears that it is throwing NPE at
following line inside RuleBuilder.java
RuleConditionBuilder builder =
(RuleConditionBuilder)context.getDialect().getBuilder(ruleDescr.getLhs().getClass());
and on further drilling, I found that "context.getDialect()" is retuning NULL.
Then I put some debug inside PackageBuilder.java
upon drilling down for the error, found out that it is not able to set the context's
dialect.
ctr.getDialect(pkgRegistry.getDialect()) gives "null" ...
DialectCompiletimeRegistry ctr = pkgRegistry.getDialectCompiletimeRegistry();
RuleBuildContext context = new RuleBuildContext(this, ruleDescr, ctr, pkg,
ctr.getDialect(pkgRegistry.getDialect()));
Is there any default setting /configuration that I am obviously missing ?
what could be the problem ?
-abhay
________________________________________
From:
rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>
[rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>] On
Behalf Of Swindells, Thomas [TSwindells@nds.com<mailto:TSwindells@nds.com>]
Sent: Thursday, June 09, 2011 1:40 PM
To: Rules Users List
Subject: Re: [rules-users] Drools in non-eclipse environment
Which version of drools is this?
For drools 5.0.1 we just use maven to resolve the dependencies for us and it works fine. I
can't obviously see any eclipse compiler in the jars that we distribute with our
application.
Thomas
-----Original Message-----
From:
rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>
[mailto:rules-users-<mailto:rules-users->
bounces@lists.jboss.org<mailto:bounces@lists.jboss.org>] On Behalf Of Abhay B.
Chaware
Sent: 09 June 2011 08:06
To: rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>
Subject: [rules-users] Drools in non-eclipse environment
Has anyone tried using drools in non-eclipse env ? meaning that
org.eclipse.jdt.core_3.5.1.v_972_R35x.jar is not in the classpath ?
Documentation says this :
(http://docs.huihoo.com/drools/4.0.7/ch02s05.html)
if you do not have Eclipse JDT Core in your classpath you must override the
compiler setting before you instantiate this PackageBuilder, you can either
do that with a packagebuilder properties file the ChainedProperties class will
find, or you can do it programmatically as shown below; note this time I use
properties to inject the value for startup.
They also provide an example, but I am not able to figure out exactly how to
use this example/info.
Here is my code :
KnowledgeBuilder kbuilder =
KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(ResourceFactory.newInputStreamResource(is),
ResourceType.DRL);
where "is" is input stream containing the rule file ( .drl)
How do I override the compiler setting ?
I am getting a null pointer exception ( see below ) and I suspect that
overriding the packagebuilderconfiguration will fix it ?
W/System.err(25511): java.lang.NullPointerException
W/System.err(25511): at
org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:47)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1161)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:637)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java
:267)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder
.java:459)
W/System.err(25511): at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.ja
va:28)
W/System.err(25511): at
com.ts.DBconnector.readKnowledgeBase(DBconnector.java:146)
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>
https://lists.jboss.org/mailman/listinfo/rules-users
**************************************************************************************
This message is confidential and intended only for the addressee. If you have received
this message in error, please immediately notify the
postmaster@nds.com<mailto:postmaster@nds.com> and delete it from your system as well
as any copies. The content of e-mails as well as traffic data may be monitored by NDS for
employment and security purposes. To protect the environment please do not print this
e-mail unless necessary.
NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18 4EX, United
Kingdom. A company registered in England and Wales. Registered no. 3080780. VAT no. GB 603
8808 40-00
**************************************************************************************
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>
https://lists.jboss.org/mailman/listinfo/rules-users
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>
https://lists.jboss.org/mailman/listinfo/rules-users
5:37 a.m.
New subject: Drools in non-eclipse environment
Preparing to be shouted down, but isn't it impossible to compile DRL on
Android and the suggestion is to load pre-serialised KnowledgeBases?
Also, as another observation, are you sure the DRL was indeed found and the
NPE is not caused by
"com.ts.DBconnector.readKnowledgeBase(DBconnector.java:143)" perhaps passing
a null to KnowledgeBuilder?
Have you looked at
http://blog.athico.com/2011/03/jbpm5-lightweight-running-on-android.html,
which might give some pointers - although it is only jBPM and not rules
themselves.
With kind regards,
Mike
On 9 June 2011 11:11, Abhay B. Chaware <Abhay.Chaware(a)kpitcummins.com>wrote:
This is what I did.
Properties properties = new Properties();
properties.put("drools.dialect.java.compiler",
"JANINO");
KnowledgeBuilderConfiguration kbConfig =
KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration( properties,
(ClassLoader[]) null );
KnowledgeBuilder kbuilder =
KnowledgeBuilderFactory.newKnowledgeBuilder(kbConfig);
kbuilder.add(ResourceFactory.newInputStreamResource(is),
ResourceType.DRL);
I am getting same error with KnowledgeBuilderConfiguration ..
W/System.err(27303): java.lang.NullPointerException
W/System.err(27303): at
org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:47)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1161)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:637)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:267)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:459)
W/System.err(27303): at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28)
W/System.err(27303): at
com.ts.DBconnector.readKnowledgeBase(DBconnector.java:143)
W/System.err(27303): at
com.first.FirstActivity.onCreate(FirstActivity.java:64)
W/System.err(27303): at
android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
W/System.err(27303): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
W/System.err(27303): at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
W/System.err(27303): at
android.app.ActivityThread.access$2300(ActivityThread.java:125)
________________________________________
From: rules-users-bounces(a)lists.jboss.org [
rules-users-bounces(a)lists.jboss.org] On Behalf Of Wolfgang Laun [
wolfgang.laun(a)gmail.com]
Sent: Thursday, June 09, 2011 2:46 PM
To: Rules Users List
Subject: Re: [rules-users] Drools in non-eclipse environment
You might try this:
Properties props = new Properties();
props.put( "drools.dialect.java.compiler", "JANINO" );
KnowledgeBuilderConfiguration kbConfig =
KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration( props,
(ClassLoader[]) null );
Requires the janino jar in your classpath, which I have as
~/.m2/repository/janino/janino/2.5.15/janino-2.5.15.jar
-W
On 9 June 2011 10:29, Abhay B. Chaware <Abhay.Chaware(a)kpitcummins.com
<mailto:Abhay.Chaware@kpitcummins.com>> wrote:
I am using drools 5.1.0
Let me explain what I am trying to do. I am trying to write a drools app
on to android platform. In my app, I have added following jars in the
application classpath -
antlr-runtime.jar
drools-api.jar
drools-compiler.jar
drools-core.jar
mvel2.jar
Do I need any other jar files ?
upon drilling down into the Null Pointer Exception, it appears that it is
throwing NPE at following line inside RuleBuilder.java
RuleConditionBuilder builder =
(RuleConditionBuilder)context.getDialect().getBuilder(ruleDescr.getLhs().getClass());
and on further drilling, I found that "context.getDialect()" is retuning
NULL.
Then I put some debug inside PackageBuilder.java
upon drilling down for the error, found out that it is not able to set the
context's dialect.
ctr.getDialect(pkgRegistry.getDialect()) gives "null" ...
DialectCompiletimeRegistry ctr =
pkgRegistry.getDialectCompiletimeRegistry();
RuleBuildContext context = new RuleBuildContext(this, ruleDescr, ctr, pkg,
ctr.getDialect(pkgRegistry.getDialect()));
Is there any default setting /configuration that I am obviously missing ?
what could be the problem ?
-abhay
________________________________________
From: rules-users-bounces(a)lists.jboss.org<mailto:
rules-users-bounces(a)lists.jboss.org> [rules-users-bounces(a)lists.jboss.org
<mailto:rules-users-bounces@lists.jboss.org>] On Behalf Of Swindells,
Thomas [TSwindells@nds.com<mailto:TSwindells@nds.com>]
Sent: Thursday, June 09, 2011 1:40 PM
To: Rules Users List
Subject: Re: [rules-users] Drools in non-eclipse environment
Which version of drools is this?
For drools 5.0.1 we just use maven to resolve the dependencies for us and
it works fine. I can't obviously see any eclipse compiler in the jars that
we distribute with our application.
Thomas
> -----Original Message-----
> From: rules-users-bounces(a)lists.jboss.org<mailto:
rules-users-bounces(a)lists.jboss.org> [mailto:rules-users-<mailto:
rules-users->
> bounces@lists.jboss.org<mailto:bounces@lists.jboss.org>] On Behalf Of
Abhay B. Chaware
> Sent: 09 June 2011 08:06
> To: rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>
> Subject: [rules-users] Drools in non-eclipse environment
>
> Has anyone tried using drools in non-eclipse env ? meaning that
> org.eclipse.jdt.core_3.5.1.v_972_R35x.jar is not in the classpath ?
>
> Documentation says this :
>
> (http://docs.huihoo.com/drools/4.0.7/ch02s05.html)
>
> if you do not have Eclipse JDT Core in your classpath you must override
the
> compiler setting before you instantiate this PackageBuilder, you can
either
> do that with a packagebuilder properties file the ChainedProperties class
will
> find, or you can do it programmatically as shown below; note this time I
use
> properties to inject the value for startup.
>
> They also provide an example, but I am not able to figure out exactly how
to
> use this example/info.
>
> Here is my code :
>
> KnowledgeBuilder kbuilder =
> KnowledgeBuilderFactory.newKnowledgeBuilder();
> kbuilder.add(ResourceFactory.newInputStreamResource(is),
> ResourceType.DRL);
>
> where "is" is input stream containing the rule file ( .drl)
>
> How do I override the compiler setting ?
>
> I am getting a null pointer exception ( see below ) and I suspect that
> overriding the packagebuilderconfiguration will fix it ?
>
> W/System.err(25511): java.lang.NullPointerException
> W/System.err(25511): at
> org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:47)
> W/System.err(25511): at
> org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1161)
> W/System.err(25511): at
> org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:637)
> W/System.err(25511): at
> org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java
> :267)
> W/System.err(25511): at
> org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder
> .java:459)
> W/System.err(25511): at
> org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.ja
> va:28)
> W/System.err(25511): at
> com.ts.DBconnector.readKnowledgeBase(DBconnector.java:146)
>
>
>
> _______________________________________________
> rules-users mailing list
> rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>
> https://lists.jboss.org/mailman/listinfo/rules-users
**************************************************************************************
This message is confidential and intended only for the addressee. If you
have received this message in error, please immediately notify the
postmaster@nds.com<mailto:postmaster@nds.com> and delete it from your
system as well as any copies. The content of e-mails as well as traffic data
may be monitored by NDS for employment and security purposes. To protect the
environment please do not print this e-mail unless necessary.
NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18
4EX, United Kingdom. A company registered in England and Wales. Registered
no. 3080780. VAT no. GB 603 8808 40-00
**************************************************************************************
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>
https://lists.jboss.org/mailman/listinfo/rules-users
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>
https://lists.jboss.org/mailman/listinfo/rules-users
_______________________________________________
rules-users mailing list
rules-users(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
6:14 a.m.
New subject: Drools in non-eclipse environment
That's exactly what I am trying out at the moment .. option - b. Pre-compile,
serialize and unserialize ...I'll share the results.
Also rule file's there at the location mentioned. So that's not a problem.
I've gone through the blog you mentioned ... and as you indicated, it's only jbpm
.. no rules ...
thanks
abhay
________________________________
From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On
Behalf Of Michael Anstis
Sent: Thursday, June 09, 2011 4:07 PM
To: Rules Users List
Subject: Re: [rules-users] Drools in non-eclipse environment
Preparing to be shouted down, but isn't it impossible to compile DRL on Android and
the suggestion is to load pre-serialised KnowledgeBases?
Also, as another observation, are you sure the DRL was indeed found and the NPE is not
caused by "com.ts.DBconnector.readKnowledgeBase(DBconnector.java:143)" perhaps
passing a null to KnowledgeBuilder?
Have you looked at
http://blog.athico.com/2011/03/jbpm5-lightweight-running-on-android.html, which might give
some pointers - although it is only jBPM and not rules themselves.
With kind regards,
Mike
On 9 June 2011 11:11, Abhay B. Chaware
<Abhay.Chaware@kpitcummins.com<mailto:Abhay.Chaware@kpitcummins.com>> wrote:
This is what I did.
Properties properties = new Properties();
properties.put("drools.dialect.java.compiler",
"JANINO");
KnowledgeBuilderConfiguration kbConfig =
KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration( properties, (ClassLoader[]) null
);
KnowledgeBuilder kbuilder =
KnowledgeBuilderFactory.newKnowledgeBuilder(kbConfig);
kbuilder.add(ResourceFactory.newInputStreamResource(is),
ResourceType.DRL);
I am getting same error with KnowledgeBuilderConfiguration ..
W/System.err(27303): java.lang.NullPointerException
W/System.err(27303): at org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:47)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1161)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:637)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:267)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:459)
W/System.err(27303): at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28)
W/System.err(27303): at com.ts.DBconnector.readKnowledgeBase(DBconnector.java:143)
W/System.err(27303): at com.first.FirstActivity.onCreate(FirstActivity.java:64)
W/System.err(27303): at
android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
W/System.err(27303): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
W/System.err(27303): at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
W/System.err(27303): at
android.app.ActivityThread.access$2300(ActivityThread.java:125)
________________________________________
From:
rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>
[rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>] On
Behalf Of Wolfgang Laun [wolfgang.laun@gmail.com<mailto:wolfgang.laun@gmail.com>]
Sent: Thursday, June 09, 2011 2:46 PM
To: Rules Users List
Subject: Re: [rules-users] Drools in non-eclipse environment
You might try this:
Properties props = new Properties();
props.put( "drools.dialect.java.compiler", "JANINO" );
KnowledgeBuilderConfiguration kbConfig =
KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration( props, (ClassLoader[])
null );
Requires the janino jar in your classpath, which I have as
~/.m2/repository/janino/janino/2.5.15/janino-2.5.15.jar
-W
On 9 June 2011 10:29, Abhay B. Chaware
<Abhay.Chaware@kpitcummins.com<mailto:Abhay.Chaware@kpitcummins.com><mailto:Abhay.Chaware@kpitcummins.com<mailto:Abhay.Chaware@kpitcummins.com>>>
wrote:
I am using drools 5.1.0
Let me explain what I am trying to do. I am trying to write a drools app on to android
platform. In my app, I have added following jars in the application classpath -
antlr-runtime.jar
drools-api.jar
drools-compiler.jar
drools-core.jar
mvel2.jar
Do I need any other jar files ?
upon drilling down into the Null Pointer Exception, it appears that it is throwing NPE at
following line inside RuleBuilder.java
RuleConditionBuilder builder =
(RuleConditionBuilder)context.getDialect().getBuilder(ruleDescr.getLhs().getClass());
and on further drilling, I found that "context.getDialect()" is retuning NULL.
Then I put some debug inside PackageBuilder.java
upon drilling down for the error, found out that it is not able to set the context's
dialect.
ctr.getDialect(pkgRegistry.getDialect()) gives "null" ...
DialectCompiletimeRegistry ctr = pkgRegistry.getDialectCompiletimeRegistry();
RuleBuildContext context = new RuleBuildContext(this, ruleDescr, ctr, pkg,
ctr.getDialect(pkgRegistry.getDialect()));
Is there any default setting /configuration that I am obviously missing ?
what could be the problem ?
-abhay
________________________________________
From:
rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org><mailto:rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>>
[rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org><mailto:rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>>]
On Behalf Of Swindells, Thomas
[TSwindells@nds.com<mailto:TSwindells@nds.com><mailto:TSwindells@nds.com<mailto:TSwindells@nds.com>>]
Sent: Thursday, June 09, 2011 1:40 PM
To: Rules Users List
Subject: Re: [rules-users] Drools in non-eclipse environment
Which version of drools is this?
For drools 5.0.1 we just use maven to resolve the dependencies for us and it works fine. I
can't obviously see any eclipse compiler in the jars that we distribute with our
application.
Thomas
-----Original Message-----
From:
rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org><mailto:rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>>
[mailto:rules-users-<mailto:rules-users-><mailto:rules-users-<mailto:rules-users->>
bounces@lists.jboss.org<mailto:bounces@lists.jboss.org><mailto:bounces@lists.jboss.org<mailto:bounces@lists.jboss.org>>]
On Behalf Of Abhay B. Chaware
Sent: 09 June 2011 08:06
To:
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org><mailto:rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>>
Subject: [rules-users] Drools in non-eclipse environment
Has anyone tried using drools in non-eclipse env ? meaning that
org.eclipse.jdt.core_3.5.1.v_972_R35x.jar is not in the classpath ?
Documentation says this :
(http://docs.huihoo.com/drools/4.0.7/ch02s05.html)
if you do not have Eclipse JDT Core in your classpath you must override the
compiler setting before you instantiate this PackageBuilder, you can either
do that with a packagebuilder properties file the ChainedProperties class will
find, or you can do it programmatically as shown below; note this time I use
properties to inject the value for startup.
They also provide an example, but I am not able to figure out exactly how to
use this example/info.
Here is my code :
KnowledgeBuilder kbuilder =
KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(ResourceFactory.newInputStreamResource(is),
ResourceType.DRL);
where "is" is input stream containing the rule file ( .drl)
How do I override the compiler setting ?
I am getting a null pointer exception ( see below ) and I suspect that
overriding the packagebuilderconfiguration will fix it ?
W/System.err(25511): java.lang.NullPointerException
W/System.err(25511): at
org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:47)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1161)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:637)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java
:267)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder
.java:459)
W/System.err(25511): at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.ja
va:28)
W/System.err(25511): at
com.ts.DBconnector.readKnowledgeBase(DBconnector.java:146)
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org><mailto:rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>>
https://lists.jboss.org/mailman/listinfo/rules-users
**************************************************************************************
This message is confidential and intended only for the addressee. If you have received
this message in error, please immediately notify the
postmaster@nds.com<mailto:postmaster@nds.com><mailto:postmaster@nds.com<mailto:postmaster@nds.com>>
and delete it from your system as well as any copies. The content of e-mails as well as
traffic data may be monitored by NDS for employment and security purposes. To protect the
environment please do not print this e-mail unless necessary.
NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18 4EX, United
Kingdom. A company registered in England and Wales. Registered no. 3080780. VAT no. GB 603
8808 40-00
**************************************************************************************
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org><mailto:rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>>
https://lists.jboss.org/mailman/listinfo/rules-users
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org><mailto:rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>>
https://lists.jboss.org/mailman/listinfo/rules-users
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>
https://lists.jboss.org/mailman/listinfo/rules-users
6:20 a.m.
New subject: Drools in non-eclipse environment
Great news :)
Please do feedback... if you get it working I'll make a blog entry on your
behalf as you are not the first (or last) to try Drools on Android.
With kind regards,
Mike
2011/6/9 Abhay B. Chaware <Abhay.Chaware(a)kpitcummins.com>
That’s exactly what I am trying out at the moment .. option – b.
Pre-compile, serialize and unserialize …I’ll share the results.
Also rule file’s there at the location mentioned. So that’s not a problem.
I’ve gone through the blog you mentioned … and as you indicated, it’s only
jbpm .. no rules …
thanks
abhay
------------------------------
*From:* rules-users-bounces(a)lists.jboss.org [mailto:
rules-users-bounces(a)lists.jboss.org] *On Behalf Of *Michael Anstis
*Sent:* Thursday, June 09, 2011 4:07 PM
*To:* Rules Users List
*Subject:* Re: [rules-users] Drools in non-eclipse environment
Preparing to be shouted down, but isn't it impossible to compile DRL on
Android and the suggestion is to load pre-serialised KnowledgeBases?
Also, as another observation, are you sure the DRL was indeed found and the
NPE is not caused by
"com.ts.DBconnector.readKnowledgeBase(DBconnector.java:143)" perhaps passing
a null to KnowledgeBuilder?
Have you looked at
http://blog.athico.com/2011/03/jbpm5-lightweight-running-on-android.html,
which might give some pointers - although it is only jBPM and not rules
themselves.
With kind regards,
Mike
On 9 June 2011 11:11, Abhay B. Chaware <Abhay.Chaware(a)kpitcummins.com>
wrote:
This is what I did.
Properties properties = new Properties();
properties.put("drools.dialect.java.compiler",
"JANINO");
KnowledgeBuilderConfiguration kbConfig =
KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration( properties,
(ClassLoader[]) null );
KnowledgeBuilder kbuilder =
KnowledgeBuilderFactory.newKnowledgeBuilder(kbConfig);
kbuilder.add(ResourceFactory.newInputStreamResource(is),
ResourceType.DRL);
I am getting same error with KnowledgeBuilderConfiguration ..
W/System.err(27303): java.lang.NullPointerException
W/System.err(27303): at
org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:47)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1161)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:637)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:267)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:459)
W/System.err(27303): at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28)
W/System.err(27303): at
com.ts.DBconnector.readKnowledgeBase(DBconnector.java:143)
W/System.err(27303): at
com.first.FirstActivity.onCreate(FirstActivity.java:64)
W/System.err(27303): at
android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
W/System.err(27303): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
W/System.err(27303): at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
W/System.err(27303): at
android.app.ActivityThread.access$2300(ActivityThread.java:125)
________________________________________
From: rules-users-bounces(a)lists.jboss.org [
rules-users-bounces(a)lists.jboss.org] On Behalf Of Wolfgang Laun [
wolfgang.laun(a)gmail.com]
Sent: Thursday, June 09, 2011 2:46 PM
To: Rules Users List
Subject: Re: [rules-users] Drools in non-eclipse environment
You might try this:
Properties props = new Properties();
props.put( "drools.dialect.java.compiler", "JANINO" );
KnowledgeBuilderConfiguration kbConfig =
KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration( props,
(ClassLoader[]) null );
Requires the janino jar in your classpath, which I have as
~/.m2/repository/janino/janino/2.5.15/janino-2.5.15.jar
-W
On 9 June 2011 10:29, Abhay B. Chaware <Abhay.Chaware(a)kpitcummins.com
<mailto:Abhay.Chaware@kpitcummins.com>> wrote:
I am using drools 5.1.0
Let me explain what I am trying to do. I am trying to write a drools app
on to android platform. In my app, I have added following jars in the
application classpath -
antlr-runtime.jar
drools-api.jar
drools-compiler.jar
drools-core.jar
mvel2.jar
Do I need any other jar files ?
upon drilling down into the Null Pointer Exception, it appears that it is
throwing NPE at following line inside RuleBuilder.java
RuleConditionBuilder builder =
(RuleConditionBuilder)context.getDialect().getBuilder(ruleDescr.getLhs().getClass());
and on further drilling, I found that "context.getDialect()" is retuning
NULL.
Then I put some debug inside PackageBuilder.java
upon drilling down for the error, found out that it is not able to set the
context's dialect.
ctr.getDialect(pkgRegistry.getDialect()) gives "null" ...
DialectCompiletimeRegistry ctr =
pkgRegistry.getDialectCompiletimeRegistry();
RuleBuildContext context = new RuleBuildContext(this, ruleDescr, ctr, pkg,
ctr.getDialect(pkgRegistry.getDialect()));
Is there any default setting /configuration that I am obviously missing ?
what could be the problem ?
-abhay
________________________________________
From: rules-users-bounces(a)lists.jboss.org<mailto:
rules-users-bounces(a)lists.jboss.org> [rules-users-bounces(a)lists.jboss.org
<mailto:rules-users-bounces@lists.jboss.org>] On Behalf Of Swindells,
Thomas [TSwindells@nds.com<mailto:TSwindells@nds.com>]
Sent: Thursday, June 09, 2011 1:40 PM
To: Rules Users List
Subject: Re: [rules-users] Drools in non-eclipse environment
Which version of drools is this?
For drools 5.0.1 we just use maven to resolve the dependencies for us and
it works fine. I can't obviously see any eclipse compiler in the jars that
we distribute with our application.
Thomas
> -----Original Message-----
> From: rules-users-bounces(a)lists.jboss.org<mailto:
rules-users-bounces(a)lists.jboss.org> [mailto:rules-users-<mailto:
rules-users->
> bounces@lists.jboss.org<mailto:bounces@lists.jboss.org>] On Behalf Of
Abhay B. Chaware
> Sent: 09 June 2011 08:06
> To: rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>
> Subject: [rules-users] Drools in non-eclipse environment
>
> Has anyone tried using drools in non-eclipse env ? meaning that
> org.eclipse.jdt.core_3.5.1.v_972_R35x.jar is not in the classpath ?
>
> Documentation says this :
>
> (http://docs.huihoo.com/drools/4.0.7/ch02s05.html)
>
> if you do not have Eclipse JDT Core in your classpath you must override
the
> compiler setting before you instantiate this PackageBuilder, you can
either
> do that with a packagebuilder properties file the ChainedProperties class
will
> find, or you can do it programmatically as shown below; note this time I
use
> properties to inject the value for startup.
>
> They also provide an example, but I am not able to figure out exactly how
to
> use this example/info.
>
> Here is my code :
>
> KnowledgeBuilder kbuilder =
> KnowledgeBuilderFactory.newKnowledgeBuilder();
> kbuilder.add(ResourceFactory.newInputStreamResource(is),
> ResourceType.DRL);
>
> where "is" is input stream containing the rule file ( .drl)
>
> How do I override the compiler setting ?
>
> I am getting a null pointer exception ( see below ) and I suspect that
> overriding the packagebuilderconfiguration will fix it ?
>
> W/System.err(25511): java.lang.NullPointerException
> W/System.err(25511): at
> org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:47)
> W/System.err(25511): at
> org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1161)
> W/System.err(25511): at
> org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:637)
> W/System.err(25511): at
> org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java
> :267)
> W/System.err(25511): at
> org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder
> .java:459)
> W/System.err(25511): at
> org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.ja
> va:28)
> W/System.err(25511): at
> com.ts.DBconnector.readKnowledgeBase(DBconnector.java:146)
>
>
>
> _______________________________________________
> rules-users mailing list
> rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>
> https://lists.jboss.org/mailman/listinfo/rules-users
**************************************************************************************
This message is confidential and intended only for the addressee. If you
have received this message in error, please immediately notify the
postmaster@nds.com<mailto:postmaster@nds.com> and delete it from your
system as well as any copies. The content of e-mails as well as traffic data
may be monitored by NDS for employment and security purposes. To protect the
environment please do not print this e-mail unless necessary.
NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18
4EX, United Kingdom. A company registered in England and Wales. Registered
no. 3080780. VAT no. GB 603 8808 40-00
**************************************************************************************
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>
https://lists.jboss.org/mailman/listinfo/rules-users
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>
https://lists.jboss.org/mailman/listinfo/rules-users
_______________________________________________
rules-users mailing list
rules-users(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
This message contains information that may be privileged or confidential
and is the property of the KPIT Cummins Infosystems Ltd. It is intended only
for the person to whom it is addressed. If you are not the intended
recipient, you are not authorized to read, print, retain copy, disseminate,
distribute, or use this message or any part thereof. If you receive this
message in error, please notify the sender immediately and delete all copies
of this message. KPIT Cummins Infosystems Ltd. does not accept any liability
for virus infected mails.
_______________________________________________
rules-users mailing list
rules-users(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
7:59 a.m.
New subject: Drools in non-eclipse environment
woo hooo ! I got past that problem :) But a new one's here now.
Looks like MVEL is not liking something :)
W/dalvikvm(29977): VFY: unable to resolve static method 164:
Ljava/beans/Introspector;.decapitalize (Ljava/lang/String;)Ljava/lang
/String;
W/dalvikvm(29977): threadid=1: thread exiting with uncaught exception (group=0x40020ac0)
E/AndroidRuntime(29977): FATAL EXCEPTION: main
E/AndroidRuntime(29977): java.lang.NoClassDefFoundError: java.beans.Introspector
E/AndroidRuntime(29977): at
org.drools.core.util.asm.ClassFieldInspector.calcFieldName(ClassFieldInspector.java:298)
E/AndroidRuntime(29977): at
org.drools.core.util.asm.ClassFieldInspector.addToMapping(ClassFieldInspector.java:216)
E/AndroidRuntime(29977): at
org.drools.core.util.asm.ClassFieldInspector.processClassWithoutByteCode(ClassFieldInspector.ja
va:148)
E/AndroidRuntime(29977): at
org.drools.core.util.asm.ClassFieldInspector.<init>(ClassFieldInspector.java:83)
E/AndroidRuntime(29977): at
org.drools.core.util.asm.ClassFieldInspector.<init>(ClassFieldInspector.java:64)
E/AndroidRuntime(29977): at
org.drools.base.ClassFieldAccessorFactory.getClassFieldReader(ClassFieldAccessorFactory.java:11
8)
E/AndroidRuntime(29977): at
org.drools.base.ClassFieldAccessorCache$CacheEntry.getReadAccessor(ClassFieldAccessorCache.java
:168)
E/AndroidRuntime(29977): at
org.drools.base.ClassFieldAccessorCache.getReadAcessor(ClassFieldAccessorCache.java:101)
E/AndroidRuntime(29977): at
org.drools.base.ClassFieldAccessorStore.wire(ClassFieldAccessorStore.java:404)
E/AndroidRuntime(29977): at
org.drools.base.ClassFieldAccessorStore.wire(ClassFieldAccessorStore.java:374)
E/AndroidRuntime(29977): at
org.drools.common.AbstractRuleBase.readExternal(AbstractRuleBase.java:295)
E/AndroidRuntime(29977): at
org.drools.reteoo.ReteooRuleBase.readExternal(ReteooRuleBase.java:236)
E/AndroidRuntime(29977): at
org.drools.impl.KnowledgeBaseImpl.readExternal(KnowledgeBaseImpl.java:108)
E/AndroidRuntime(29977): at
java.io.ObjectInputStream.readNewObject(ObjectInputStream.java:2127)
E/AndroidRuntime(29977): at
java.io.ObjectInputStream.readNonPrimitiveContent(ObjectInputStream.java:929)
E/AndroidRuntime(29977): at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:2285)
E/AndroidRuntime(29977): at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:2240)
E/AndroidRuntime(29977): at
com.ts.DBconnector.execPackageByPath(DBconnector.java:219)
E/AndroidRuntime(29977): at
com.first.FirstActivity.onCreate(FirstActivity.java:77)
E/AndroidRuntime(29977): at
android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
E/AndroidRuntime(29977): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
E/AndroidRuntime(29977): at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
E/AndroidRuntime(29977): at
android.app.ActivityThread.access$2300(ActivityThread.java:125)
E/AndroidRuntime(29977): at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
E/AndroidRuntime(29977): at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime(29977): at android.os.Looper.loop(Looper.java:123)
E/AndroidRuntime(29977): at
android.app.ActivityThread.main(ActivityThread.java:4627)
E/AndroidRuntime(29977): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime(29977): at java.lang.reflect.Method.invoke(Method.java:521)
E/AndroidRuntime(29977): at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
E/AndroidRuntime(29977): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
E/AndroidRuntime(29977): at dalvik.system.NativeStart.main(Native Method)
________________________________
From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On
Behalf Of Michael Anstis
Sent: Thursday, June 09, 2011 4:51 PM
To: Rules Users List
Subject: Re: [rules-users] Drools in non-eclipse environment
Great news :)
Please do feedback... if you get it working I'll make a blog entry on your behalf as
you are not the first (or last) to try Drools on Android.
With kind regards,
Mike
2011/6/9 Abhay B. Chaware
<Abhay.Chaware@kpitcummins.com<mailto:Abhay.Chaware@kpitcummins.com>>
That's exactly what I am trying out at the moment .. option - b. Pre-compile,
serialize and unserialize ...I'll share the results.
Also rule file's there at the location mentioned. So that's not a problem.
I've gone through the blog you mentioned ... and as you indicated, it's only jbpm
.. no rules ...
thanks
abhay
________________________________
From:
rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>
[mailto:rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>]
On Behalf Of Michael Anstis
Sent: Thursday, June 09, 2011 4:07 PM
To: Rules Users List
Subject: Re: [rules-users] Drools in non-eclipse environment
Preparing to be shouted down, but isn't it impossible to compile DRL on Android and
the suggestion is to load pre-serialised KnowledgeBases?
Also, as another observation, are you sure the DRL was indeed found and the NPE is not
caused by "com.ts.DBconnector.readKnowledgeBase(DBconnector.java:143)" perhaps
passing a null to KnowledgeBuilder?
Have you looked at
http://blog.athico.com/2011/03/jbpm5-lightweight-running-on-android.html, which might give
some pointers - although it is only jBPM and not rules themselves.
With kind regards,
Mike
On 9 June 2011 11:11, Abhay B. Chaware
<Abhay.Chaware@kpitcummins.com<mailto:Abhay.Chaware@kpitcummins.com>> wrote:
This is what I did.
Properties properties = new Properties();
properties.put("drools.dialect.java.compiler",
"JANINO");
KnowledgeBuilderConfiguration kbConfig =
KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration( properties, (ClassLoader[]) null
);
KnowledgeBuilder kbuilder =
KnowledgeBuilderFactory.newKnowledgeBuilder(kbConfig);
kbuilder.add(ResourceFactory.newInputStreamResource(is),
ResourceType.DRL);
I am getting same error with KnowledgeBuilderConfiguration ..
W/System.err(27303): java.lang.NullPointerException
W/System.err(27303): at org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:47)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1161)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:637)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:267)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:459)
W/System.err(27303): at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28)
W/System.err(27303): at com.ts.DBconnector.readKnowledgeBase(DBconnector.java:143)
W/System.err(27303): at com.first.FirstActivity.onCreate(FirstActivity.java:64)
W/System.err(27303): at
android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
W/System.err(27303): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
W/System.err(27303): at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
W/System.err(27303): at
android.app.ActivityThread.access$2300(ActivityThread.java:125)
________________________________________
From:
rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>
[rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>] On
Behalf Of Wolfgang Laun [wolfgang.laun@gmail.com<mailto:wolfgang.laun@gmail.com>]
Sent: Thursday, June 09, 2011 2:46 PM
To: Rules Users List
Subject: Re: [rules-users] Drools in non-eclipse environment
You might try this:
Properties props = new Properties();
props.put( "drools.dialect.java.compiler", "JANINO" );
KnowledgeBuilderConfiguration kbConfig =
KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration( props, (ClassLoader[])
null );
Requires the janino jar in your classpath, which I have as
~/.m2/repository/janino/janino/2.5.15/janino-2.5.15.jar
-W
On 9 June 2011 10:29, Abhay B. Chaware
<Abhay.Chaware@kpitcummins.com<mailto:Abhay.Chaware@kpitcummins.com><mailto:Abhay.Chaware@kpitcummins.com<mailto:Abhay.Chaware@kpitcummins.com>>>
wrote:
I am using drools 5.1.0
Let me explain what I am trying to do. I am trying to write a drools app on to android
platform. In my app, I have added following jars in the application classpath -
antlr-runtime.jar
drools-api.jar
drools-compiler.jar
drools-core.jar
mvel2.jar
Do I need any other jar files ?
upon drilling down into the Null Pointer Exception, it appears that it is throwing NPE at
following line inside RuleBuilder.java
RuleConditionBuilder builder =
(RuleConditionBuilder)context.getDialect().getBuilder(ruleDescr.getLhs().getClass());
and on further drilling, I found that "context.getDialect()" is retuning NULL.
Then I put some debug inside PackageBuilder.java
upon drilling down for the error, found out that it is not able to set the context's
dialect.
ctr.getDialect(pkgRegistry.getDialect()) gives "null" ...
DialectCompiletimeRegistry ctr = pkgRegistry.getDialectCompiletimeRegistry();
RuleBuildContext context = new RuleBuildContext(this, ruleDescr, ctr, pkg,
ctr.getDialect(pkgRegistry.getDialect()));
Is there any default setting /configuration that I am obviously missing ?
what could be the problem ?
-abhay
________________________________________
From:
rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org><mailto:rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>>
[rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org><mailto:rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>>]
On Behalf Of Swindells, Thomas
[TSwindells@nds.com<mailto:TSwindells@nds.com><mailto:TSwindells@nds.com<mailto:TSwindells@nds.com>>]
Sent: Thursday, June 09, 2011 1:40 PM
To: Rules Users List
Subject: Re: [rules-users] Drools in non-eclipse environment
Which version of drools is this?
For drools 5.0.1 we just use maven to resolve the dependencies for us and it works fine. I
can't obviously see any eclipse compiler in the jars that we distribute with our
application.
Thomas
-----Original Message-----
From:
rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org><mailto:rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>>
[mailto:rules-users-<mailto:rules-users-><mailto:rules-users-<mailto:rules-users->>
bounces@lists.jboss.org<mailto:bounces@lists.jboss.org><mailto:bounces@lists.jboss.org<mailto:bounces@lists.jboss.org>>]
On Behalf Of Abhay B. Chaware
Sent: 09 June 2011 08:06
To:
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org><mailto:rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>>
Subject: [rules-users] Drools in non-eclipse environment
Has anyone tried using drools in non-eclipse env ? meaning that
org.eclipse.jdt.core_3.5.1.v_972_R35x.jar is not in the classpath ?
Documentation says this :
(http://docs.huihoo.com/drools/4.0.7/ch02s05.html)
if you do not have Eclipse JDT Core in your classpath you must override the
compiler setting before you instantiate this PackageBuilder, you can either
do that with a packagebuilder properties file the ChainedProperties class will
find, or you can do it programmatically as shown below; note this time I use
properties to inject the value for startup.
They also provide an example, but I am not able to figure out exactly how to
use this example/info.
Here is my code :
KnowledgeBuilder kbuilder =
KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(ResourceFactory.newInputStreamResource(is),
ResourceType.DRL);
where "is" is input stream containing the rule file ( .drl)
How do I override the compiler setting ?
I am getting a null pointer exception ( see below ) and I suspect that
overriding the packagebuilderconfiguration will fix it ?
W/System.err(25511): java.lang.NullPointerException
W/System.err(25511): at
org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:47)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1161)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:637)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java
:267)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder
.java:459)
W/System.err(25511): at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.ja
va:28)
W/System.err(25511): at
com.ts.DBconnector.readKnowledgeBase(DBconnector.java:146)
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org><mailto:rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>>
https://lists.jboss.org/mailman/listinfo/rules-users
**************************************************************************************
This message is confidential and intended only for the addressee. If you have received
this message in error, please immediately notify the
postmaster@nds.com<mailto:postmaster@nds.com><mailto:postmaster@nds.com<mailto:postmaster@nds.com>>
and delete it from your system as well as any copies. The content of e-mails as well as
traffic data may be monitored by NDS for employment and security purposes. To protect the
environment please do not print this e-mail unless necessary.
NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18 4EX, United
Kingdom. A company registered in England and Wales. Registered no. 3080780. VAT no. GB 603
8808 40-00
**************************************************************************************
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org><mailto:rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>>
https://lists.jboss.org/mailman/listinfo/rules-users
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org><mailto:rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>>
https://lists.jboss.org/mailman/listinfo/rules-users
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>
https://lists.jboss.org/mailman/listinfo/rules-users
This message contains information that may be privileged or confidential and is the
property of the KPIT Cummins Infosystems Ltd. It is intended only for the person to whom
it is addressed. If you are not the intended recipient, you are not authorized to read,
print, retain copy, disseminate, distribute, or use this message or any part thereof. If
you receive this message in error, please notify the sender immediately and delete all
copies of this message. KPIT Cummins Infosystems Ltd. does not accept any liability for
virus infected mails.
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>
https://lists.jboss.org/mailman/listinfo/rules-users
8:07 a.m.
New subject: Drools in non-eclipse environment
http://meteatamel.wordpress.com/2010/08/25/android-api-and-java-beans-pac...
http://meteatamel.wordpress.com/2010/09/28/android-api-and-java-beans-pac...
Enjoy the ride ;)
2011/6/9 Abhay B. Chaware <Abhay.Chaware(a)kpitcummins.com>
woo hooo ! I got past that problem J But a new one’s here now.
Looks like MVEL is not liking something J
W/dalvikvm(29977): VFY: unable to resolve static method 164:
Ljava/beans/Introspector;.decapitalize (Ljava/lang/String;)Ljava/lang
/String;
W/dalvikvm(29977): threadid=1: thread exiting with uncaught exception
(group=0x40020ac0)
E/AndroidRuntime(29977): FATAL EXCEPTION: main
E/AndroidRuntime(29977): java.lang.NoClassDefFoundError:
java.beans.Introspector
E/AndroidRuntime(29977): at
org.drools.core.util.asm.ClassFieldInspector.calcFieldName(ClassFieldInspector.java:298)
E/AndroidRuntime(29977): at
org.drools.core.util.asm.ClassFieldInspector.addToMapping(ClassFieldInspector.java:216)
E/AndroidRuntime(29977): at
org.drools.core.util.asm.ClassFieldInspector.processClassWithoutByteCode(ClassFieldInspector.ja
va:148)
E/AndroidRuntime(29977): at
org.drools.core.util.asm.ClassFieldInspector.<init>(ClassFieldInspector.java:83)
E/AndroidRuntime(29977): at
org.drools.core.util.asm.ClassFieldInspector.<init>(ClassFieldInspector.java:64)
E/AndroidRuntime(29977): at
org.drools.base.ClassFieldAccessorFactory.getClassFieldReader(ClassFieldAccessorFactory.java:11
8)
E/AndroidRuntime(29977): at
org.drools.base.ClassFieldAccessorCache$CacheEntry.getReadAccessor(ClassFieldAccessorCache.java
:168)
E/AndroidRuntime(29977): at
org.drools.base.ClassFieldAccessorCache.getReadAcessor(ClassFieldAccessorCache.java:101)
E/AndroidRuntime(29977): at
org.drools.base.ClassFieldAccessorStore.wire(ClassFieldAccessorStore.java:404)
E/AndroidRuntime(29977): at
org.drools.base.ClassFieldAccessorStore.wire(ClassFieldAccessorStore.java:374)
E/AndroidRuntime(29977): at
org.drools.common.AbstractRuleBase.readExternal(AbstractRuleBase.java:295)
E/AndroidRuntime(29977): at
org.drools.reteoo.ReteooRuleBase.readExternal(ReteooRuleBase.java:236)
E/AndroidRuntime(29977): at
org.drools.impl.KnowledgeBaseImpl.readExternal(KnowledgeBaseImpl.java:108)
E/AndroidRuntime(29977): at
java.io.ObjectInputStream.readNewObject(ObjectInputStream.java:2127)
E/AndroidRuntime(29977): at
java.io.ObjectInputStream.readNonPrimitiveContent(ObjectInputStream.java:929)
E/AndroidRuntime(29977): at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:2285)
E/AndroidRuntime(29977): at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:2240)
E/AndroidRuntime(29977): at
com.ts.DBconnector.execPackageByPath(DBconnector.java:219)
E/AndroidRuntime(29977): at
com.first.FirstActivity.onCreate(FirstActivity.java:77)
E/AndroidRuntime(29977): at
android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
E/AndroidRuntime(29977): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
E/AndroidRuntime(29977): at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
E/AndroidRuntime(29977): at
android.app.ActivityThread.access$2300(ActivityThread.java:125)
E/AndroidRuntime(29977): at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
E/AndroidRuntime(29977): at
android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime(29977): at android.os.Looper.loop(Looper.java:123)
E/AndroidRuntime(29977): at
android.app.ActivityThread.main(ActivityThread.java:4627)
E/AndroidRuntime(29977): at
java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime(29977): at
java.lang.reflect.Method.invoke(Method.java:521)
E/AndroidRuntime(29977): at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
E/AndroidRuntime(29977): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
E/AndroidRuntime(29977): at dalvik.system.NativeStart.main(Native
Method)
------------------------------
*From:* rules-users-bounces(a)lists.jboss.org [mailto:
rules-users-bounces(a)lists.jboss.org] *On Behalf Of *Michael Anstis
*Sent:* Thursday, June 09, 2011 4:51 PM
*To:* Rules Users List
*Subject:* Re: [rules-users] Drools in non-eclipse environment
Great news :)
Please do feedback... if you get it working I'll make a blog entry on your
behalf as you are not the first (or last) to try Drools on Android.
With kind regards,
Mike
2011/6/9 Abhay B. Chaware <Abhay.Chaware(a)kpitcummins.com>
That’s exactly what I am trying out at the moment .. option – b.
Pre-compile, serialize and unserialize …I’ll share the results.
Also rule file’s there at the location mentioned. So that’s not a problem.
I’ve gone through the blog you mentioned … and as you indicated, it’s only
jbpm .. no rules …
thanks
abhay
------------------------------
*From:* rules-users-bounces(a)lists.jboss.org [mailto:
rules-users-bounces(a)lists.jboss.org] *On Behalf Of *Michael Anstis
*Sent:* Thursday, June 09, 2011 4:07 PM
*To:* Rules Users List
*Subject:* Re: [rules-users] Drools in non-eclipse environment
Preparing to be shouted down, but isn't it impossible to compile DRL on
Android and the suggestion is to load pre-serialised KnowledgeBases?
Also, as another observation, are you sure the DRL was indeed found and the
NPE is not caused by
"com.ts.DBconnector.readKnowledgeBase(DBconnector.java:143)" perhaps passing
a null to KnowledgeBuilder?
Have you looked at
http://blog.athico.com/2011/03/jbpm5-lightweight-running-on-android.html,
which might give some pointers - although it is only jBPM and not rules
themselves.
With kind regards,
Mike
On 9 June 2011 11:11, Abhay B. Chaware <Abhay.Chaware(a)kpitcummins.com>
wrote:
This is what I did.
Properties properties = new Properties();
properties.put("drools.dialect.java.compiler",
"JANINO");
KnowledgeBuilderConfiguration kbConfig =
KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration( properties,
(ClassLoader[]) null );
KnowledgeBuilder kbuilder =
KnowledgeBuilderFactory.newKnowledgeBuilder(kbConfig);
kbuilder.add(ResourceFactory.newInputStreamResource(is),
ResourceType.DRL);
I am getting same error with KnowledgeBuilderConfiguration ..
W/System.err(27303): java.lang.NullPointerException
W/System.err(27303): at
org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:47)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1161)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:637)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:267)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:459)
W/System.err(27303): at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28)
W/System.err(27303): at
com.ts.DBconnector.readKnowledgeBase(DBconnector.java:143)
W/System.err(27303): at
com.first.FirstActivity.onCreate(FirstActivity.java:64)
W/System.err(27303): at
android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
W/System.err(27303): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
W/System.err(27303): at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
W/System.err(27303): at
android.app.ActivityThread.access$2300(ActivityThread.java:125)
________________________________________
From: rules-users-bounces(a)lists.jboss.org [
rules-users-bounces(a)lists.jboss.org] On Behalf Of Wolfgang Laun [
wolfgang.laun(a)gmail.com]
Sent: Thursday, June 09, 2011 2:46 PM
To: Rules Users List
Subject: Re: [rules-users] Drools in non-eclipse environment
You might try this:
Properties props = new Properties();
props.put( "drools.dialect.java.compiler", "JANINO" );
KnowledgeBuilderConfiguration kbConfig =
KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration( props,
(ClassLoader[]) null );
Requires the janino jar in your classpath, which I have as
~/.m2/repository/janino/janino/2.5.15/janino-2.5.15.jar
-W
On 9 June 2011 10:29, Abhay B. Chaware <Abhay.Chaware(a)kpitcummins.com
<mailto:Abhay.Chaware@kpitcummins.com>> wrote:
I am using drools 5.1.0
Let me explain what I am trying to do. I am trying to write a drools app
on to android platform. In my app, I have added following jars in the
application classpath -
antlr-runtime.jar
drools-api.jar
drools-compiler.jar
drools-core.jar
mvel2.jar
Do I need any other jar files ?
upon drilling down into the Null Pointer Exception, it appears that it is
throwing NPE at following line inside RuleBuilder.java
RuleConditionBuilder builder =
(RuleConditionBuilder)context.getDialect().getBuilder(ruleDescr.getLhs().getClass());
and on further drilling, I found that "context.getDialect()" is retuning
NULL.
Then I put some debug inside PackageBuilder.java
upon drilling down for the error, found out that it is not able to set the
context's dialect.
ctr.getDialect(pkgRegistry.getDialect()) gives "null" ...
DialectCompiletimeRegistry ctr =
pkgRegistry.getDialectCompiletimeRegistry();
RuleBuildContext context = new RuleBuildContext(this, ruleDescr, ctr, pkg,
ctr.getDialect(pkgRegistry.getDialect()));
Is there any default setting /configuration that I am obviously missing ?
what could be the problem ?
-abhay
________________________________________
From: rules-users-bounces(a)lists.jboss.org<mailto:
rules-users-bounces(a)lists.jboss.org> [rules-users-bounces(a)lists.jboss.org
<mailto:rules-users-bounces@lists.jboss.org>] On Behalf Of Swindells,
Thomas [TSwindells@nds.com<mailto:TSwindells@nds.com>]
Sent: Thursday, June 09, 2011 1:40 PM
To: Rules Users List
Subject: Re: [rules-users] Drools in non-eclipse environment
Which version of drools is this?
For drools 5.0.1 we just use maven to resolve the dependencies for us and
it works fine. I can't obviously see any eclipse compiler in the jars that
we distribute with our application.
Thomas
> -----Original Message-----
> From: rules-users-bounces(a)lists.jboss.org<mailto:
rules-users-bounces(a)lists.jboss.org> [mailto:rules-users-<mailto:
rules-users->
> bounces@lists.jboss.org<mailto:bounces@lists.jboss.org>] On Behalf Of
Abhay B. Chaware
> Sent: 09 June 2011 08:06
> To: rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>
> Subject: [rules-users] Drools in non-eclipse environment
>
> Has anyone tried using drools in non-eclipse env ? meaning that
> org.eclipse.jdt.core_3.5.1.v_972_R35x.jar is not in the classpath ?
>
> Documentation says this :
>
> (http://docs.huihoo.com/drools/4.0.7/ch02s05.html)
>
> if you do not have Eclipse JDT Core in your classpath you must override
the
> compiler setting before you instantiate this PackageBuilder, you can
either
> do that with a packagebuilder properties file the ChainedProperties class
will
> find, or you can do it programmatically as shown below; note this time I
use
> properties to inject the value for startup.
>
> They also provide an example, but I am not able to figure out exactly how
to
> use this example/info.
>
> Here is my code :
>
> KnowledgeBuilder kbuilder =
> KnowledgeBuilderFactory.newKnowledgeBuilder();
> kbuilder.add(ResourceFactory.newInputStreamResource(is),
> ResourceType.DRL);
>
> where "is" is input stream containing the rule file ( .drl)
>
> How do I override the compiler setting ?
>
> I am getting a null pointer exception ( see below ) and I suspect that
> overriding the packagebuilderconfiguration will fix it ?
>
> W/System.err(25511): java.lang.NullPointerException
> W/System.err(25511): at
> org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:47)
> W/System.err(25511): at
> org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1161)
> W/System.err(25511): at
> org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:637)
> W/System.err(25511): at
> org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java
> :267)
> W/System.err(25511): at
> org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder
> .java:459)
> W/System.err(25511): at
> org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.ja
> va:28)
> W/System.err(25511): at
> com.ts.DBconnector.readKnowledgeBase(DBconnector.java:146)
>
>
>
> _______________________________________________
> rules-users mailing list
> rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>
> https://lists.jboss.org/mailman/listinfo/rules-users
**************************************************************************************
This message is confidential and intended only for the addressee. If you
have received this message in error, please immediately notify the
postmaster@nds.com<mailto:postmaster@nds.com> and delete it from your
system as well as any copies. The content of e-mails as well as traffic data
may be monitored by NDS for employment and security purposes. To protect the
environment please do not print this e-mail unless necessary.
NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18
4EX, United Kingdom. A company registered in England and Wales. Registered
no. 3080780. VAT no. GB 603 8808 40-00
**************************************************************************************
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>
https://lists.jboss.org/mailman/listinfo/rules-users
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>
https://lists.jboss.org/mailman/listinfo/rules-users
_______________________________________________
rules-users mailing list
rules-users(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
This message contains information that may be privileged or confidential
and is the property of the KPIT Cummins Infosystems Ltd. It is intended only
for the person to whom it is addressed. If you are not the intended
recipient, you are not authorized to read, print, retain copy, disseminate,
distribute, or use this message or any part thereof. If you receive this
message in error, please notify the sender immediately and delete all copies
of this message. KPIT Cummins Infosystems Ltd. does not accept any liability
for virus infected mails.
_______________________________________________
rules-users mailing list
rules-users(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
This message contains information that may be privileged or confidential
and is the property of the KPIT Cummins Infosystems Ltd. It is intended only
for the person to whom it is addressed. If you are not the intended
recipient, you are not authorized to read, print, retain copy, disseminate,
distribute, or use this message or any part thereof. If you receive this
message in error, please notify the sender immediately and delete all copies
of this message. KPIT Cummins Infosystems Ltd. does not accept any liability
for virus infected mails.
_______________________________________________
rules-users mailing list
rules-users(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
2:23 a.m.
New subject: Drools in non-eclipse environment
The ride's real fun :)
Got apache harmony's beans.jar to work .. now , when I am reading the serialized
knowledgebase object on android, quite obvious, it is throwing this error -
java.lang.UnsupportedOperationException: can't load this type of class file
since my serialized knowledgebase object is in java format .. and not dex. Can this
serialized version be converted into .dex format using the "dx" utility - pre or
post serialization ? I tried the "dx" tool on the serialized object, but it
doesn't seem to understand the format.
-abhay
________________________________
From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On
Behalf Of Michael Anstis
Sent: Thursday, June 09, 2011 6:37 PM
To: Rules Users List
Subject: Re: [rules-users] Drools in non-eclipse environment
http://meteatamel.wordpress.com/2010/08/25/android-api-and-java-beans-pac...
http://meteatamel.wordpress.com/2010/09/28/android-api-and-java-beans-pac...
Enjoy the ride ;)
2011/6/9 Abhay B. Chaware
<Abhay.Chaware@kpitcummins.com<mailto:Abhay.Chaware@kpitcummins.com>>
woo hooo ! I got past that problem :) But a new one's here now.
Looks like MVEL is not liking something :)
W/dalvikvm(29977): VFY: unable to resolve static method 164:
Ljava/beans/Introspector;.decapitalize (Ljava/lang/String;)Ljava/lang
/String;
W/dalvikvm(29977): threadid=1: thread exiting with uncaught exception (group=0x40020ac0)
E/AndroidRuntime(29977): FATAL EXCEPTION: main
E/AndroidRuntime(29977): java.lang.NoClassDefFoundError: java.beans.Introspector
E/AndroidRuntime(29977): at
org.drools.core.util.asm.ClassFieldInspector.calcFieldName(ClassFieldInspector.java:298)
E/AndroidRuntime(29977): at
org.drools.core.util.asm.ClassFieldInspector.addToMapping(ClassFieldInspector.java:216)
E/AndroidRuntime(29977): at
org.drools.core.util.asm.ClassFieldInspector.processClassWithoutByteCode(ClassFieldInspector.ja
va:148)
E/AndroidRuntime(29977): at
org.drools.core.util.asm.ClassFieldInspector.<init>(ClassFieldInspector.java:83)
E/AndroidRuntime(29977): at
org.drools.core.util.asm.ClassFieldInspector.<init>(ClassFieldInspector.java:64)
E/AndroidRuntime(29977): at
org.drools.base.ClassFieldAccessorFactory.getClassFieldReader(ClassFieldAccessorFactory.java:11
8)
E/AndroidRuntime(29977): at
org.drools.base.ClassFieldAccessorCache$CacheEntry.getReadAccessor(ClassFieldAccessorCache.java
:168)
E/AndroidRuntime(29977): at
org.drools.base.ClassFieldAccessorCache.getReadAcessor(ClassFieldAccessorCache.java:101)
E/AndroidRuntime(29977): at
org.drools.base.ClassFieldAccessorStore.wire(ClassFieldAccessorStore.java:404)
E/AndroidRuntime(29977): at
org.drools.base.ClassFieldAccessorStore.wire(ClassFieldAccessorStore.java:374)
E/AndroidRuntime(29977): at
org.drools.common.AbstractRuleBase.readExternal(AbstractRuleBase.java:295)
E/AndroidRuntime(29977): at
org.drools.reteoo.ReteooRuleBase.readExternal(ReteooRuleBase.java:236)
E/AndroidRuntime(29977): at
org.drools.impl.KnowledgeBaseImpl.readExternal(KnowledgeBaseImpl.java:108)
E/AndroidRuntime(29977): at
java.io.ObjectInputStream.readNewObject(ObjectInputStream.java:2127)
E/AndroidRuntime(29977): at
java.io.ObjectInputStream.readNonPrimitiveContent(ObjectInputStream.java:929)
E/AndroidRuntime(29977): at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:2285)
E/AndroidRuntime(29977): at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:2240)
E/AndroidRuntime(29977): at
com.ts.DBconnector.execPackageByPath(DBconnector.java:219)
E/AndroidRuntime(29977): at
com.first.FirstActivity.onCreate(FirstActivity.java:77)
E/AndroidRuntime(29977): at
android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
E/AndroidRuntime(29977): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
E/AndroidRuntime(29977): at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
E/AndroidRuntime(29977): at
android.app.ActivityThread.access$2300(ActivityThread.java:125)
E/AndroidRuntime(29977): at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
E/AndroidRuntime(29977): at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime(29977): at android.os.Looper.loop(Looper.java:123)
E/AndroidRuntime(29977): at
android.app.ActivityThread.main(ActivityThread.java:4627)
E/AndroidRuntime(29977): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime(29977): at java.lang.reflect.Method.invoke(Method.java:521)
E/AndroidRuntime(29977): at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
E/AndroidRuntime(29977): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
E/AndroidRuntime(29977): at dalvik.system.NativeStart.main(Native Method)
________________________________
From:
rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>
[mailto:rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>]
On Behalf Of Michael Anstis
Sent: Thursday, June 09, 2011 4:51 PM
To: Rules Users List
Subject: Re: [rules-users] Drools in non-eclipse environment
Great news :)
Please do feedback... if you get it working I'll make a blog entry on your behalf as
you are not the first (or last) to try Drools on Android.
With kind regards,
Mike
2011/6/9 Abhay B. Chaware
<Abhay.Chaware@kpitcummins.com<mailto:Abhay.Chaware@kpitcummins.com>>
That's exactly what I am trying out at the moment .. option - b. Pre-compile,
serialize and unserialize ...I'll share the results.
Also rule file's there at the location mentioned. So that's not a problem.
I've gone through the blog you mentioned ... and as you indicated, it's only jbpm
.. no rules ...
thanks
abhay
________________________________
From:
rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>
[mailto:rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>]
On Behalf Of Michael Anstis
Sent: Thursday, June 09, 2011 4:07 PM
To: Rules Users List
Subject: Re: [rules-users] Drools in non-eclipse environment
Preparing to be shouted down, but isn't it impossible to compile DRL on Android and
the suggestion is to load pre-serialised KnowledgeBases?
Also, as another observation, are you sure the DRL was indeed found and the NPE is not
caused by "com.ts.DBconnector.readKnowledgeBase(DBconnector.java:143)" perhaps
passing a null to KnowledgeBuilder?
Have you looked at
http://blog.athico.com/2011/03/jbpm5-lightweight-running-on-android.html, which might give
some pointers - although it is only jBPM and not rules themselves.
With kind regards,
Mike
On 9 June 2011 11:11, Abhay B. Chaware
<Abhay.Chaware@kpitcummins.com<mailto:Abhay.Chaware@kpitcummins.com>> wrote:
This is what I did.
Properties properties = new Properties();
properties.put("drools.dialect.java.compiler",
"JANINO");
KnowledgeBuilderConfiguration kbConfig =
KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration( properties, (ClassLoader[]) null
);
KnowledgeBuilder kbuilder =
KnowledgeBuilderFactory.newKnowledgeBuilder(kbConfig);
kbuilder.add(ResourceFactory.newInputStreamResource(is),
ResourceType.DRL);
I am getting same error with KnowledgeBuilderConfiguration ..
W/System.err(27303): java.lang.NullPointerException
W/System.err(27303): at org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:47)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1161)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:637)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:267)
W/System.err(27303): at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:459)
W/System.err(27303): at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28)
W/System.err(27303): at com.ts.DBconnector.readKnowledgeBase(DBconnector.java:143)
W/System.err(27303): at com.first.FirstActivity.onCreate(FirstActivity.java:64)
W/System.err(27303): at
android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
W/System.err(27303): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
W/System.err(27303): at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
W/System.err(27303): at
android.app.ActivityThread.access$2300(ActivityThread.java:125)
________________________________________
From:
rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>
[rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>] On
Behalf Of Wolfgang Laun [wolfgang.laun@gmail.com<mailto:wolfgang.laun@gmail.com>]
Sent: Thursday, June 09, 2011 2:46 PM
To: Rules Users List
Subject: Re: [rules-users] Drools in non-eclipse environment
You might try this:
Properties props = new Properties();
props.put( "drools.dialect.java.compiler", "JANINO" );
KnowledgeBuilderConfiguration kbConfig =
KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration( props, (ClassLoader[])
null );
Requires the janino jar in your classpath, which I have as
~/.m2/repository/janino/janino/2.5.15/janino-2.5.15.jar
-W
On 9 June 2011 10:29, Abhay B. Chaware
<Abhay.Chaware@kpitcummins.com<mailto:Abhay.Chaware@kpitcummins.com><mailto:Abhay.Chaware@kpitcummins.com<mailto:Abhay.Chaware@kpitcummins.com>>>
wrote:
I am using drools 5.1.0
Let me explain what I am trying to do. I am trying to write a drools app on to android
platform. In my app, I have added following jars in the application classpath -
antlr-runtime.jar
drools-api.jar
drools-compiler.jar
drools-core.jar
mvel2.jar
Do I need any other jar files ?
upon drilling down into the Null Pointer Exception, it appears that it is throwing NPE at
following line inside RuleBuilder.java
RuleConditionBuilder builder =
(RuleConditionBuilder)context.getDialect().getBuilder(ruleDescr.getLhs().getClass());
and on further drilling, I found that "context.getDialect()" is retuning NULL.
Then I put some debug inside PackageBuilder.java
upon drilling down for the error, found out that it is not able to set the context's
dialect.
ctr.getDialect(pkgRegistry.getDialect()) gives "null" ...
DialectCompiletimeRegistry ctr = pkgRegistry.getDialectCompiletimeRegistry();
RuleBuildContext context = new RuleBuildContext(this, ruleDescr, ctr, pkg,
ctr.getDialect(pkgRegistry.getDialect()));
Is there any default setting /configuration that I am obviously missing ?
what could be the problem ?
-abhay
________________________________________
From:
rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org><mailto:rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>>
[rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org><mailto:rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>>]
On Behalf Of Swindells, Thomas
[TSwindells@nds.com<mailto:TSwindells@nds.com><mailto:TSwindells@nds.com<mailto:TSwindells@nds.com>>]
Sent: Thursday, June 09, 2011 1:40 PM
To: Rules Users List
Subject: Re: [rules-users] Drools in non-eclipse environment
Which version of drools is this?
For drools 5.0.1 we just use maven to resolve the dependencies for us and it works fine. I
can't obviously see any eclipse compiler in the jars that we distribute with our
application.
Thomas
-----Original Message-----
From:
rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org><mailto:rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>>
[mailto:rules-users-<mailto:rules-users-><mailto:rules-users-<mailto:rules-users->>
bounces@lists.jboss.org<mailto:bounces@lists.jboss.org><mailto:bounces@lists.jboss.org<mailto:bounces@lists.jboss.org>>]
On Behalf Of Abhay B. Chaware
Sent: 09 June 2011 08:06
To:
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org><mailto:rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>>
Subject: [rules-users] Drools in non-eclipse environment
Has anyone tried using drools in non-eclipse env ? meaning that
org.eclipse.jdt.core_3.5.1.v_972_R35x.jar is not in the classpath ?
Documentation says this :
(http://docs.huihoo.com/drools/4.0.7/ch02s05.html)
if you do not have Eclipse JDT Core in your classpath you must override the
compiler setting before you instantiate this PackageBuilder, you can either
do that with a packagebuilder properties file the ChainedProperties class will
find, or you can do it programmatically as shown below; note this time I use
properties to inject the value for startup.
They also provide an example, but I am not able to figure out exactly how to
use this example/info.
Here is my code :
KnowledgeBuilder kbuilder =
KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(ResourceFactory.newInputStreamResource(is),
ResourceType.DRL);
where "is" is input stream containing the rule file ( .drl)
How do I override the compiler setting ?
I am getting a null pointer exception ( see below ) and I suspect that
overriding the packagebuilderconfiguration will fix it ?
W/System.err(25511): java.lang.NullPointerException
W/System.err(25511): at
org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:47)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1161)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:637)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java
:267)
W/System.err(25511): at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder
.java:459)
W/System.err(25511): at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.ja
va:28)
W/System.err(25511): at
com.ts.DBconnector.readKnowledgeBase(DBconnector.java:146)
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org><mailto:rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>>
https://lists.jboss.org/mailman/listinfo/rules-users
**************************************************************************************
This message is confidential and intended only for the addressee. If you have received
this message in error, please immediately notify the
postmaster@nds.com<mailto:postmaster@nds.com><mailto:postmaster@nds.com<mailto:postmaster@nds.com>>
and delete it from your system as well as any copies. The content of e-mails as well as
traffic data may be monitored by NDS for employment and security purposes. To protect the
environment please do not print this e-mail unless necessary.
NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18 4EX, United
Kingdom. A company registered in England and Wales. Registered no. 3080780. VAT no. GB 603
8808 40-00
**************************************************************************************
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org><mailto:rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>>
https://lists.jboss.org/mailman/listinfo/rules-users
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org><mailto:rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>>
https://lists.jboss.org/mailman/listinfo/rules-users
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>
https://lists.jboss.org/mailman/listinfo/rules-users
This message contains information that may be privileged or confidential and is the
property of the KPIT Cummins Infosystems Ltd. It is intended only for the person to whom
it is addressed. If you are not the intended recipient, you are not authorized to read,
print, retain copy, disseminate, distribute, or use this message or any part thereof. If
you receive this message in error, please notify the sender immediately and delete all
copies of this message. KPIT Cummins Infosystems Ltd. does not accept any liability for
virus infected mails.
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>
https://lists.jboss.org/mailman/listinfo/rules-users
This message contains information that may be privileged or confidential and is the
property of the KPIT Cummins Infosystems Ltd. It is intended only for the person to whom
it is addressed. If you are not the intended recipient, you are not authorized to read,
print, retain copy, disseminate, distribute, or use this message or any part thereof. If
you receive this message in error, please notify the sender immediately and delete all
copies of this message. KPIT Cummins Infosystems Ltd. does not accept any liability for
virus infected mails.
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>
https://lists.jboss.org/mailman/listinfo/rules-users
4918
days inactive
4919
days old
13 comments
5 participants
participants (5)
-
Abhay B. Chaware -
Geoffrey De Smet -
Michael Anstis -
Swindells, Thomas -
Wolfgang Laun