[rules-users] Run Drool Application From Command Prompt

[Pankaj.Jain at lntinfotech.com]

I have set JAVA as compiler, but I tried it with JANINO also but I got 
same exception..........

Hey Greg.....  I am not finding a proiper way to set the class path, I had 
used XBoot class path as I mentioned in my previous mail.....

Thanks & Regards:

Pankaj Jain | L&T infotech |Navi Mumbai
Mobile: +91 9920218945
Email : pankaj.jain at lntinfotech.com
www.Lntinfotech.com

"Whatever the mind of man can conceive & believe, it can achieve."

Larsen & Toubro Infotech Ltd.
www.Lntinfotech.com

This Document is classified as: 

L&T Infotech Proprietary   L&T Infotech Confidential   L&T Infotech 
Internal Use Only   L&T Infotech General Business 

This Email may contain confidential or privileged information for the 
intended recipient (s) If you are not the intended recipient, please do 
not use or disseminate the information, notify the sender and delete it 
from your system. 



Nicolas Héron <nicolas.heron.java at gmail.com> 
Sent by: rules-users-bounces at lists.jboss.org
07/28/2009 12:34 PM
Please respond to
Rules Users List <rules-users at lists.jboss.org>


To
Rules Users List <rules-users at lists.jboss.org>
cc

Subject
Re: [rules-users] Run Drool Application From Command Prompt






Hello,
did you set the java compiler name : "JANINO" or "JAVA" ?

2009/7/28 <Pankaj.Jain at lntinfotech.com>

Hi 

I still have not got any solution of my problem that I posted previously. 
I have included all required jar files and set proper class path .. Please 
do help ? 

problem: 
I am trying to integrate Drool with ofbiz and run application from command 
prompt. In one way I have integrated it properly and I am able to run it 
successfully. 

Code : Which I was using initially 

KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(); 


or 

PackageBuilderConfiguration cfg = new PackageBuilderConfiguration(); 
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(); 


Exception I got : 

org.drools.RuntimeDroolsException: Unable to load dialect 
'org.drools.rule.builder.dialect.java.JavaDialectConfiguration:java 
:org.drools.rule.builder.dialect.java.JavaDialectConfiguration' 
at 
org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:274) 
at 
org.drools.compiler.PackageBuilderConfiguration.buildDialectConfigurationMap(PackageBuilderConfiguration.java:259) 


at 
org.drools.compiler.PackageBuilderConfiguration.init(PackageBuilderConfiguration.java:176) 
at 
org.drools.compiler.PackageBuilderConfiguration.<init>(PackageBuilderConfiguration.java:153) 
at org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java:242) 
. 
. 
. 
Caused by: java.lang.NullPointerException 
at 
org.drools.rule.builder.dialect.java.JavaDialectConfiguration.setCompiler(JavaDialectConfiguration.java:92) 
at 
org.drools.rule.builder.dialect.java.JavaDialectConfiguration.init(JavaDialectConfiguration.java:55) 
at 
org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:270 


Problem I found : 
In the class JavaDialectConfiguration in jar file drools-compiler.jar 
there is a method named "setCompliler",  in this method Null Pointer 
Exception was coming. 

Solution I provided : 
In my application I created my custom class CustomJavaDialectConfiguration 
by extending to class JavaDialectConfiguration, In this class I overrided 
the method setCompiler. My method was exactly same as that of method 
setCompiler in JavaDialectConfiguration . To call my dialect class I also 
overrided the method "addDialect" of PackageBuilderConfiguration class . 
For that I created class CustomPackageBuilderConfiguration by extending to 
PackageBuilderConfiguration. 
after that I wrote the code: 

PackageBuilderConfiguration cfg = new CustomPackageBuilderConfiguration(); 

KnowledgeBuilder kbuilder = 
KnowledgeBuilderFactory.newKnowledgeBuilder(cfg); 


Now application is running perfectly fine from both eclipse and command 
prompt without any exception. 

I want to know as my overrided method "setCompiler" was exactly same then 
why I had to override method, and In original code (ie in 
drools-compiler.jar file) why it was giving exception  ???  Was that due 
to class lader or something else ??  Please do help in this regard .... 

  

Thanks & Regards:

Pankaj Jain | L&T infotech |Navi Mumbai
Mobile: +91 9920218945
Email : pankaj.jain at lntinfotech.com
www.Lntinfotech.com

"Whatever the mind of man can conceive & believe, it can achieve."

Larsen & Toubro Infotech Ltd.
www.Lntinfotech.com

This Document is classified as: 

L&T Infotech Proprietary   L&T Infotech Confidential   L&T Infotech 
Internal Use Only   L&T Infotech General Business   

This Email may contain confidential or privileged information for the 
intended recipient (s) If you are not the intended recipient, please do 
not use or disseminate the information, notify the sender and delete it 
from your system. 
______________________________________________________________________

_______________________________________________
rules-users mailing list
rules-users at lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users



______________________________________________________________________
_______________________________________________
rules-users mailing list
rules-users at lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users


______________________________________________________________________
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.jboss.org/pipermail/rules-users/attachments/20090728/a1d6a662/attachment.html