7:44 a.m.
/Hello there, I was trying to do write a simple rule inside BRMS: When a car
model year is older than 1989, then destroy the car. Package was validated
and created the snapshot and copied the uri. Then I created a Drools Project
and was trying to access those resources through uri but I am not able to go
forward. Its showing 401 exception at the line I specified the uri in the
code, see below:/
package pop.blah.test;
import org.drools.KnowledgeBase;
import org.drools.agent.KnowledgeAgent;
import org.drools.agent.KnowledgeAgentFactory;
import org.drools.io.ResourceFactory;
import org.drools.runtime.StatefulKnowledgeSession;
import org.drools.definition.type.FactType;
public class CarApp {
public static void main(String[] args) {
KnowledgeAgent kagent = KnowledgeAgentFactory.newKnowledgeAgent(
"myAgent1" );
kagent.applyChangeSet(
ResourceFactory.newUrlResource("http://localhost:8080/jboss-brms/org.drools.guvnor.Guvnor/package/pop.blah.test/CAR/LATEST"));
KnowledgeBase kbase = kagent.getKnowledgeBase();
StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
ResourceFactory.getResourceChangeScannerService().start();
try {
FactType carType = kbase.getFactType( "pop.blah.test", "Car" );
Object bmw = carType.newInstance();
carType.set( bmw,"name","My Car" );
carType.set( bmw,"make","BMW-x5" );
carType.set( bmw,"year", 1977);
ksession.insert( bmw );
ksession.fireAllRules();
boolean dest = (Boolean) carType.get( bmw, "destroy" );
if (dest==true) {
System.out.println("I am gona destroy that car!");
}
else {
System.out.println("I am happy with my car!");
}
}
catch (Exception E) {
E.printStackTrace();
}
finally {
ksession.dispose();
}
}
}
/and here is my Error:/
[2012:01:03 08:01:578:info] ResourceChangeNotification created
[2012:01:03 08:01:578:info] ResourceChangeScanner reconfigured with
interval=60
[2012:01:03 08:01:578:info] ResourceChangeScanner created with default
interval=60
[2012:01:03 08:01:578:debug] ResourceChangeNotification monitor added
monitor=org.drools.io.impl.ResourceChangeScannerImpl@1bd7848
[2012:01:03 08:01:593:debug] KnowledgeAgent building resource map
[2012:01:03 08:01:593:info] KnowledegAgent has started listening for
ChangeSet notifications
[2012:01:03 08:01:593:info] KnowledgeAgent created, with configuration:
monitorChangeSetEvents=true scanResources=true scanDirectories=true
newInstance=true
[2012:01:03 08:01:859:exception]
java.lang.RuntimeException: Unable to parse ChangeSet
at
org.drools.agent.impl.KnowledgeAgentImpl.getChangeSet(KnowledgeAgentImpl.java:393)
at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:168)
at pop.blah.test.CarApp.main(CarApp.java:16)
Caused by: java.io.IOException: Server returned HTTP response code: 401 for
URL:
http://localhost:8080/jboss-brms/org.drools.guvnor.Guvnor/package/pop.bla...
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown
Source)
at org.drools.io.impl.UrlResource.grabStream(UrlResource.java:210)
at org.drools.io.impl.UrlResource.getInputStream(UrlResource.java:146)
at org.drools.io.impl.UrlResource.getReader(UrlResource.java:214)
at
org.drools.agent.impl.KnowledgeAgentImpl.getChangeSet(KnowledgeAgentImpl.java:391)
... 2 more
[2012:01:03 08:01:859:exception]
java.lang.RuntimeException: Unable to parse ChangeSet
at
org.drools.agent.impl.KnowledgeAgentImpl.getChangeSet(KnowledgeAgentImpl.java:397)
at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:168)
at pop.blah.test.CarApp.main(CarApp.java:16)
[2012:01:03 08:01:859:info] KnowledgeAgent applying ChangeSet
Exception in thread "main" java.lang.NullPointerException
at
org.drools.agent.impl.KnowledgeAgentImpl.processChangeSet(KnowledgeAgentImpl.java:215)
at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:183)
at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:168)
at pop.blah.test.CarApp.main(CarApp.java:16)
Please help me.
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8:45 a.m.
You have to create a change-set containing authentication information for
the resource. Please search in this mailing list since this problem was
previously solved.
Best Regards,
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com
On Tue, Jan 3, 2012 at 2:44 PM, kachaps4u <kachanAnidharan(a)gmail.com> wrote:
/Hello there, I was trying to do write a simple rule inside BRMS:
When a
car
model year is older than 1989, then destroy the car. Package was validated
and created the snapshot and copied the uri. Then I created a Drools
Project
and was trying to access those resources through uri but I am not able to
go
forward. Its showing 401 exception at the line I specified the uri in the
code, see below:/
package pop.blah.test;
import org.drools.KnowledgeBase;
import org.drools.agent.KnowledgeAgent;
import org.drools.agent.KnowledgeAgentFactory;
import org.drools.io.ResourceFactory;
import org.drools.runtime.StatefulKnowledgeSession;
import org.drools.definition.type.FactType;
public class CarApp {
public static void main(String[] args) {
KnowledgeAgent kagent =
KnowledgeAgentFactory.newKnowledgeAgent(
"myAgent1" );
kagent.applyChangeSet(
ResourceFactory.newUrlResource("
http://localhost:8080/jboss-brms/org.drools.guvnor.Guvnor/package/pop.bla...
"));
KnowledgeBase kbase = kagent.getKnowledgeBase();
StatefulKnowledgeSession ksession =
kbase.newStatefulKnowledgeSession();
ResourceFactory.getResourceChangeScannerService().start();
try {
FactType carType = kbase.getFactType( "pop.blah.test",
"Car" );
Object bmw = carType.newInstance();
carType.set( bmw,"name","My Car" );
carType.set( bmw,"make","BMW-x5" );
carType.set( bmw,"year", 1977);
ksession.insert( bmw );
ksession.fireAllRules();
boolean dest = (Boolean) carType.get( bmw, "destroy" );
if (dest==true) {
System.out.println("I am gona destroy that car!");
}
else {
System.out.println("I am happy with my car!");
}
}
catch (Exception E) {
E.printStackTrace();
}
finally {
ksession.dispose();
}
}
}
/and here is my Error:/
[2012:01:03 08:01:578:info] ResourceChangeNotification created
[2012:01:03 08:01:578:info] ResourceChangeScanner reconfigured with
interval=60
[2012:01:03 08:01:578:info] ResourceChangeScanner created with default
interval=60
[2012:01:03 08:01:578:debug] ResourceChangeNotification monitor added
monitor=org.drools.io.impl.ResourceChangeScannerImpl@1bd7848
[2012:01:03 08:01:593:debug] KnowledgeAgent building resource map
[2012:01:03 08:01:593:info] KnowledegAgent has started listening for
ChangeSet notifications
[2012:01:03 08:01:593:info] KnowledgeAgent created, with configuration:
monitorChangeSetEvents=true scanResources=true scanDirectories=true
newInstance=true
[2012:01:03 08:01:859:exception]
java.lang.RuntimeException: Unable to parse ChangeSet
at
org.drools.agent.impl.KnowledgeAgentImpl.getChangeSet(KnowledgeAgentImpl.java:393)
at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:168)
at pop.blah.test.CarApp.main(CarApp.java:16)
Caused by: java.io.IOException: Server returned HTTP response code: 401 for
URL:
http://localhost:8080/jboss-brms/org.drools.guvnor.Guvnor/package/pop.bla...
at
sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown
Source)
at org.drools.io.impl.UrlResource.grabStream(UrlResource.java:210)
at
org.drools.io.impl.UrlResource.getInputStream(UrlResource.java:146)
at org.drools.io.impl.UrlResource.getReader(UrlResource.java:214)
at
org.drools.agent.impl.KnowledgeAgentImpl.getChangeSet(KnowledgeAgentImpl.java:391)
... 2 more
[2012:01:03 08:01:859:exception]
java.lang.RuntimeException: Unable to parse ChangeSet
at
org.drools.agent.impl.KnowledgeAgentImpl.getChangeSet(KnowledgeAgentImpl.java:397)
at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:168)
at pop.blah.test.CarApp.main(CarApp.java:16)
[2012:01:03 08:01:859:info] KnowledgeAgent applying ChangeSet
Exception in thread "main" java.lang.NullPointerException
at
org.drools.agent.impl.KnowledgeAgentImpl.processChangeSet(KnowledgeAgentImpl.java:215)
at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:183)
at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:168)
at pop.blah.test.CarApp.main(CarApp.java:16)
Please help me.
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10:21 a.m.
/@Esteban-
I have created an xml file with resource added with authentication like
below and put it in rules/ChangeSet.xml:/
change-set xmlns='http://drools.org/drools-5.0/change-set'
xmlns:xs='http://www.w3.org/2001/XMLSchema-instance'
xs:schemaLocation='http://drools.org/drools-5.0/change-set
http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-api/src/...
<add
<resource
source='http://localhost:8080/jboss-brms/org.drools.guvnor.Guvnor/package/pop.blah.test/CAR'
type='PKG'
basicAuthentication="enabled" username="jboss"
password="jboss"/
</add </change-set
/And also edited the code to add classPath resource like this below:/
kagent.applyChangeSet(
ResourceFactory.newClassPathResource("/rules/ChangeSet.xml"));
/Now its giving me this error:/
2012:01:03 11:01:375:info] ResourceChangeNotification created
[2012:01:03 11:01:375:info] ResourceChangeScanner reconfigured with
interval=60
[2012:01:03 11:01:375:info] ResourceChangeScanner created with default
interval=60
[2012:01:03 11:01:375:debug] ResourceChangeNotification monitor added
monitor=org.drools.io.impl.ResourceChangeScannerImpl@177b3cd
[2012:01:03 11:01:375:debug] KnowledgeAgent building resource map
[2012:01:03 11:01:375:info] KnowledegAgent has started listening for
ChangeSet notifications
[2012:01:03 11:01:375:info] KnowledgeAgent created, with configuration:
monitorChangeSetEvents=true scanResources=true scanDirectories=true
newInstance=true
[2012:01:03 11:01:406:exception]
java.lang.RuntimeException: Unable to parse ChangeSet
at
org.drools.agent.impl.KnowledgeAgentImpl.getChangeSet(KnowledgeAgentImpl.java:393)
at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:168)
at pop.blah.test.CarApp.main(CarApp.java:16)
Caused by: java.io.FileNotFoundException: '/rules/ChangeSet.xml' cannot be
opened because it does not exist
at
org.drools.io.impl.ClassPathResource.getInputStream(ClassPathResource.java:116)
at
org.drools.io.impl.ClassPathResource.getReader(ClassPathResource.java:163)
at
org.drools.agent.impl.KnowledgeAgentImpl.getChangeSet(KnowledgeAgentImpl.java:391)
... 2 more
[2012:01:03 11:01:406:exception]
java.lang.RuntimeException: Unable to parse ChangeSet
at
org.drools.agent.impl.KnowledgeAgentImpl.getChangeSet(KnowledgeAgentImpl.java:397)
at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:168)
at pop.blah.test.CarApp.main(CarApp.java:16)
[2012:01:03 11:01:406:info] KnowledgeAgent applying ChangeSet
Exception in thread "main" java.lang.NullPointerException
at
org.drools.agent.impl.KnowledgeAgentImpl.processChangeSet(KnowledgeAgentImpl.java:215)
at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:183)
at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:168)
at pop.blah.test.CarApp.main(CarApp.java:16)
Its file not found! I don't understand why there is file not found? Please
help.
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11:16 a.m.
Where do you have your 'rules' directory? Are you sure it is in the
classpath?
Did you try this?
kagent.applyChangeSet(
ResourceFactory.newClassPathResource("rules/ChangeSet.xml"));
(Without the initial '/')
Best Regards,
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com
On Tue, Jan 3, 2012 at 5:21 PM, kachaps4u <kachanAnidharan(a)gmail.com> wrote:
/@Esteban-
I have created an xml file with resource added with authentication like
below and put it in rules/ChangeSet.xml:/
change-set xmlns='http://drools.org/drools-5.0/change-set'
xmlns:xs='http://www.w3.org/2001/XMLSchema-instance'
xs:schemaLocation='http://drools.org/drools-5.0/change-set
http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-api/src/...
'
>
<add>
<resource
source='
http://localhost:8080/jboss-brms/org.drools.guvnor.Guvnor/package/pop.bla...
'
type='PKG'
basicAuthentication="enabled" username="jboss"
password="jboss"/>
</add>
</change-set>
/And also edited the code to add classPath resource like this below:/
kagent.applyChangeSet(
ResourceFactory.newClassPathResource("/rules/ChangeSet.xml"));
/Now its giving me this error:/
2012:01:03 11:01:375:info] ResourceChangeNotification created
[2012:01:03 11:01:375:info] ResourceChangeScanner reconfigured with
interval=60
[2012:01:03 11:01:375:info] ResourceChangeScanner created with default
interval=60
[2012:01:03 11:01:375:debug] ResourceChangeNotification monitor added
monitor=org.drools.io.impl.ResourceChangeScannerImpl@177b3cd
[2012:01:03 11:01:375:debug] KnowledgeAgent building resource map
[2012:01:03 11:01:375:info] KnowledegAgent has started listening for
ChangeSet notifications
[2012:01:03 11:01:375:info] KnowledgeAgent created, with configuration:
monitorChangeSetEvents=true scanResources=true scanDirectories=true
newInstance=true
[2012:01:03 11:01:406:exception]
java.lang.RuntimeException: Unable to parse ChangeSet
at
org.drools.agent.impl.KnowledgeAgentImpl.getChangeSet(KnowledgeAgentImpl.java:393)
at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:168)
at pop.blah.test.CarApp.main(CarApp.java:16)
Caused by: java.io.FileNotFoundException: '/rules/ChangeSet.xml' cannot be
opened because it does not exist
at
org.drools.io.impl.ClassPathResource.getInputStream(ClassPathResource.java:116)
at
org.drools.io.impl.ClassPathResource.getReader(ClassPathResource.java:163)
at
org.drools.agent.impl.KnowledgeAgentImpl.getChangeSet(KnowledgeAgentImpl.java:391)
... 2 more
[2012:01:03 11:01:406:exception]
java.lang.RuntimeException: Unable to parse ChangeSet
at
org.drools.agent.impl.KnowledgeAgentImpl.getChangeSet(KnowledgeAgentImpl.java:397)
at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:168)
at pop.blah.test.CarApp.main(CarApp.java:16)
[2012:01:03 11:01:406:info] KnowledgeAgent applying ChangeSet
Exception in thread "main" java.lang.NullPointerException
at
org.drools.agent.impl.KnowledgeAgentImpl.processChangeSet(KnowledgeAgentImpl.java:215)
at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:183)
at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:168)
at pop.blah.test.CarApp.main(CarApp.java:16)
Its file not found! I don't understand why there is file not found? Please
help.
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11:23 a.m.
Yes I double checked my classpath file and also tried without "/". But not
able to figure it out where its going wrong.
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11:50 a.m.
http://drools.46999.n3.nabble.com/file/n3629781/discouraged.jpg
I have this warning when writing the program. Is there some problem in my
JARs which is restricting the access or something?
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12:08 p.m.
This doesn't seem to be a drools issue.
Try to do some test to see if the change-set file is really in your
classpath.
Best Regards,
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com
On Tue, Jan 3, 2012 at 6:50 PM, kachaps4u <kachanAnidharan(a)gmail.com> wrote:
http://drools.46999.n3.nabble.com/file/n3629781/discouraged.jpg
I have this warning when writing the program. Is there some problem in my
JARs which is restricting the access or something?
--
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12:49 p.m.
/Class path is defined and ChangeSet.xml is inside it. Below you can see my
classpath for the drools project. I found my ChangeSet.xml exists in rules
folder too. Please read my edited post before. I am trying to solve that
object instance error. Any reason why?/
<?xml version="1.0" encoding="UTF-8"?>
<classpath>
<classpathentry kind="src" path="src/main/java"/>
<classpathentry kind="src" path="src/main/rules"/>
<classpathentry kind="con"
path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
<classpathentry kind="con" path="DROOLS/Drools"/>
<classpathentry kind="output" path="bin"/>
</classpath>
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3:16 a.m.
Sorry, I'm not an eclipse user :)
If you are having troubles with BRMS, then you can contact Redhat's support
team, right? But again, the FileNotFoundException is because the file is
not being found where you are saying. Try to do a simple test using
this.getClass().getResourceAsStream("rules/ChangeSet.xml"); to see if it
also fails.
Best Regards,
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com
On Tue, Jan 3, 2012 at 7:49 PM, kachaps4u <kachanAnidharan(a)gmail.com> wrote:
/Class path is defined and ChangeSet.xml is inside it. Below you can
see my
classpath for the drools project. I found my ChangeSet.xml exists in rules
folder too. Please read my edited post before. I am trying to solve that
object instance error. Any reason why?/
<?xml version="1.0" encoding="UTF-8"?>
<classpath>
<classpathentry kind="src" path="src/main/java"/>
<classpathentry kind="src" path="src/main/rules"/>
<classpathentry kind="con"
path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
<classpathentry kind="con" path="DROOLS/Drools"/>
<classpathentry kind="output" path="bin"/>
</classpath>
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7:32 a.m.
Thanks for all the help. I studied a lot of stuff through this process.
Anyway I will let you all know what went wrong when I find the error. I will
definitely do the test. Thank you.
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4710
days inactive
4711
days old
9 comments
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participants (2)
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Esteban Aliverti -
kachaps4u