Re: [rules-users] Run Drool Application From Command Prompt
heh. I just remembered that Thread.currentThread().getContextClassLoader() can return null as well. :) A good thing to do is have a utility function like the attached class loading utility class. Rearrange the class loading order to suit your taste. --- On Tue, 7/28/09, Greg Barton greg_bar...@yahoo.com wrote: From: Greg Barton greg_bar...@yahoo.com Subject: Re: [rules-users] Run Drool Application From Command Prompt To: Rules Users List rules-users@lists.jboss.org Date: Tuesday, July 28, 2009, 12:59 AM It's unclear from your post when you get the NPE: from the command line, from eclipse, or when integrated with OFBiz. (I assume you're referring to http://ofbiz.apache.org/) It's undoubtedly a classpath issue. Just peek at the source a bit. I'm not sure what version you're using, but if you look at the source in the svn repo you'll see that line 92 of JavaDialectConfiguration is this: getClass().getClassLoader().loadClass( org.eclipse.jdt.internal.compiler.Compiler ); See the javadoc for Class.getClassLoader() that says Returns the class loader for the class. Some implementations may use null to represent the bootstrap class loader. This method will return null in such implementations if this class was loaded by the bootstrap class loader. So, it looks probable that in the environment that's having problems, the JavaDialectConfiguration class is loaded by the bootstrap classloader. What is the VM implementation you're using? It might be best if Thread.currentThread().getContextClassLoader() was used instead of getClass().getClassLoader() in JavaDialectConfiguration and elsewhere. Devs, have an opinion on that? --- On Mon, 7/27/09, pankaj.j...@lntinfotech.com pankaj.j...@lntinfotech.com wrote: From: pankaj.j...@lntinfotech.com pankaj.j...@lntinfotech.com Subject: Re: [rules-users] Run Drool Application From Command Prompt To: rules-users@lists.jboss.org Date: Monday, July 27, 2009, 11:50 PM 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
Re: [rules-users] Run Drool Application From Command Prompt
Hi you r right, When I run the application (integrated with OFBiz) from command prompt I get the NPE: in line getClass().getClassLoader().loadClass( org.eclipse.jdt.internal.compiler.Compiler ); When I run the application (ofcourse integrated with OFBiz) from eclipse I don't get NPE exception. In ofbiz we have a batch file named startofbiz.bat to run the application, inside this I configured the classpath by this set VMARGS=-Xbootclasspath/p:applications\order\lib\antlr-runtime.jar set VMARGS=-Xbootclasspath/p:applications\order\lib\drools-api.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\drools-compiler.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\drools-core.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\drools-decisiontables.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\drools-jsr94.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\drools-templates.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\joda-time.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\jsr94.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\jxl.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\mvel2.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\org.eclipse.jdt.core_3.4.4.v_894_R34x.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\xpp3.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\xpp3_min.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\xstream.jar %VMARGS% If i don't do this I get the class not found exception Thanks Regards: Pankaj Jain | LT infotech |Navi Mumbai Mobile: +91 9920218945 Email : pankaj.j...@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: LT Infotech Proprietary LT Infotech Confidential LT Infotech Internal Use Only LT 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. Greg Barton greg_bar...@yahoo.com Sent by: rules-users-boun...@lists.jboss.org 07/28/2009 11:29 AM Please respond to Rules Users List rules-users@lists.jboss.org To Rules Users List rules-users@lists.jboss.org cc Subject Re: [rules-users] Run Drool Application From Command Prompt It's unclear from your post when you get the NPE: from the command line, from eclipse, or when integrated with OFBiz. (I assume you're referring to http://ofbiz.apache.org/) It's undoubtedly a classpath issue. Just peek at the source a bit. I'm not sure what version you're using, but if you look at the source in the svn repo you'll see that line 92 of JavaDialectConfiguration is this: getClass().getClassLoader().loadClass( org.eclipse.jdt.internal.compiler.Compiler ); See the javadoc for Class.getClassLoader() that says Returns the class loader for the class. Some implementations may use null to represent the bootstrap class loader. This method will return null in such implementations if this class was loaded by the bootstrap class loader. So, it looks probable that in the environment that's having problems, the JavaDialectConfiguration class is loaded by the bootstrap classloader. What is the VM implementation you're using? It might be best if Thread.currentThread().getContextClassLoader() was used instead of getClass().getClassLoader() in JavaDialectConfiguration and elsewhere. Devs, have an opinion on that? --- On Mon, 7/27/09, pankaj.j...@lntinfotech.com pankaj.j...@lntinfotech.com wrote: From: pankaj.j...@lntinfotech.com pankaj.j...@lntinfotech.com Subject: Re: [rules-users] Run Drool Application From Command Prompt To: rules-users@lists.jboss.org Date: Monday, July 27, 2009, 11:50 PM 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
Re: [rules-users] Run Drool Application From Command Prompt
Well, there you go. :) Just put drools into the regular classpath and not the bootstrap classpath. Is that possible? --- On Tue, 7/28/09, pankaj.j...@lntinfotech.com pankaj.j...@lntinfotech.com wrote: From: pankaj.j...@lntinfotech.com pankaj.j...@lntinfotech.com Subject: Re: [rules-users] Run Drool Application From Command Prompt To: Rules Users List rules-users@lists.jboss.org Date: Tuesday, July 28, 2009, 1:23 AM Hi you r right, When I run the application (integrated with OFBiz) from command prompt I get the NPE: in line getClass().getClassLoader().loadClass( org.eclipse.jdt.internal.compiler.Compiler ); When I run the application (ofcourse integrated with OFBiz) from eclipse I don't get NPE exception. In ofbiz we have a batch file named startofbiz.bat to run the application, inside this I configured the classpath by this set VMARGS=-Xbootclasspath/p:applications\order\lib\antlr-runtime.jar set VMARGS=-Xbootclasspath/p:applications\order\lib\drools-api.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\drools-compiler.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\drools-core.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\drools-decisiontables.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\drools-jsr94.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\drools-templates.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\joda-time.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\jsr94.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\jxl.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\mvel2.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\org.eclipse.jdt.core_3.4.4.v_894_R34x.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\xpp3.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\xpp3_min.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\xstream.jar %VMARGS% If i don't do this I get the class not found exception Thanks Regards: Pankaj Jain | LT infotech |Navi Mumbai Mobile: +91 9920218945 Email : pankaj.j...@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: LT Infotech Proprietary LT Infotech Confidential LT Infotech Internal Use Only LT 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. Greg Barton greg_bar...@yahoo.com Sent by: rules-users-boun...@lists.jboss.org 07/28/2009 11:29 AM Please respond to Rules Users List rules-users@lists.jboss.org To Rules Users List rules-users@lists.jboss.org cc Subject Re: [rules-users] Run Drool Application From Command Prompt It's unclear from your post when you get the NPE: from the command line, from eclipse, or when integrated with OFBiz. (I assume you're referring to http://ofbiz.apache.org/) It's undoubtedly a classpath issue. Just peek at the source a bit. I'm not sure what version you're using, but if you look at the source in the svn repo you'll see that line 92 of JavaDialectConfiguration is this: getClass().getClassLoader().loadClass( org.eclipse.jdt.internal.compiler.Compiler ); See the javadoc for Class.getClassLoader() that says Returns the class loader for the class. Some implementations may use null to represent the bootstrap class loader. This method will return null in such implementations if this class was loaded by the bootstrap class loader. So, it looks probable that in the environment that's having problems, the JavaDialectConfiguration class is loaded by the bootstrap classloader. What is the VM implementation you're using? It might be best if Thread.currentThread().getContextClassLoader() was used instead of getClass().getClassLoader() in JavaDialectConfiguration and elsewhere. Devs, have an opinion on that? --- On Mon, 7/27/09, pankaj.j...@lntinfotech.com pankaj.j...@lntinfotech.com wrote: From: pankaj.j...@lntinfotech.com pankaj.j...@lntinfotech.com Subject: Re: [rules-users] Run Drool Application From Command Prompt To: rules-users@lists.jboss.org Date: Monday, July 27, 2009, 11:50 PM 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 ..
Re: [rules-users] Problem when using multiple rule files (Drools 5)
The rules and the facts are the same.
So i add the source to the project and (try to) debug into the code.
The NPE occurs in the getIndex method (see source fragment below)
and the reader member is NULL. And the only point where reader is set is
in
the setReadAccessor method, but the method is not called in this context.
From my point of view it could be bug and i will try to create
a testcase - hope it is reproducible then.
part of ClassFieldReader.java
...
public void setReadAccessor(InternalReadAccessor reader) {
this.reader = reader;
}
public int getIndex() {
return this.reader.getIndex();
}
...
--
View this message in context:
http://www.nabble.com/Problem-when-using-multiple-rule-files-%28Drools-5%29-tp24623347p24693274.html
Sent from the drools - user mailing list archive at Nabble.com.
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] guvnor analysis question/error and scenarios
Am running drools 5.0.1 ga using the drools/jboss standalone package. When I run the analysis from within guvnor, no error comes up in guvnor and it happily lists the models and attribs, but the following comes up in the server output: 15:06:15,122 ERROR [STDERR] org.drools.RuntimeDroolsException: org.drools.verifier.opposites.rule_opposite_literalrestrictions_0eval1invo...@90c73ecd: java.util.zip.DataFormatException: Value types did not match. Value type boolean was compared to boolean 15:06:15,123 ERROR [STDERR] at org.drools.rule.EvalCondition.isAllowed(EvalCondition.java:122) 15:06:15,123 ERROR [STDERR] The rules all fire as expected, the scenarios all execute, and the rules file (in guvnor) all validates OK. Am a complete java noob, so do not know if it is just something obvious I have missed about boolean defintions? Also, when the run all scenarios is run from within guvnor, scenarios are not updated in the same way as when the scenario is run individually. eg I ran the tests individually when setting up, and subsequently only ran all scenarios in batch. Only found out when I ran an xlst on the scenarios to show off how cool this stuff is to the managers, showing last run and last results. Phil ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Run Drool Application From Command Prompt
Hello, did you set the java compiler name : JANINO or JAVA ? 2009/7/28 pankaj.j...@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 | LT infotech |Navi Mumbai Mobile: +91 9920218945 Email : pankaj.j...@lntinfotech.com www.Lntinfotech.com Whatever the mind of man can conceive believe, it can achieve. * Larsen Toubro Infotech Ltd.** **www.Lntinfotech.com* http://www.lntinfotech.com/ This Document is classified as: LT Infotech Proprietary LT Infotech Confidential LT Infotech Internal Use Only LT 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@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Efficiency of using inline evals in Drools 5
Hello! I have a question about how an inline eval function is or isn’t efficient in the algorithm- I have many User objects that I am inserting into Working Memory (in a stateful session), and each User object has as ArrayList of Messages The message class has 2 String fields: text and logid I have custom boolean function user.containsText(String keyword) function that takes in a string, and searches to see if that keyword contained in the text field of one of the message entries in the User message arraylist. If I use an inline eval statement to implement this: $user: User( eval (containsText ( “sample text”) ) ) Will it re-evaluate each time? Or will Drools cache the result and remember it/ create a node based on it so the node will have every user this is true for, and it doesn’t re-evaluate when the users or rules are modified? Will it create a node in the algorithm for all the users that this function is true for? On a similar note, if I use the “matches” comparator in a rule creation, does it create a node and cache the result? Will it automatically re-evaluate each time the field its matched against is modified? Thanks so much! Nancy ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] NPE exception in MarshallerReaderContext
Hi, I'm getting a NPE exception when using drools-persistence-jpa with Drools Flow (I'm working with the trunk version 28274). It occurs in MarshallerReaderContext (line 78, see link below) and seems to be a result of JBRULES-2149. When loading a WorkItemInfo from the database a MarshallerReaderContext is created without the ruleBase set. For the moment I have added another catch block for the NPE and call super.resolveClass(desc). This seems to be working correctly and would have been the behaviour before JBRULES-2149. Should I go ahead and create a JIRA issue for this, or what is the prefered way to get the fixed in the trunk? http://fisheye.jboss.org/browse/JBossRules/trunk/drools-core/src/main/java/org/drools/marshalling/impl/MarshallerReaderContext.java?r=27314 http://fisheye.jboss.org/browse/JBossRules/trunk/drools-persistence-jpa/src/main/java/org/drools/persistence/processinstance/WorkItemInfo.java?r=25448 https://jira.jboss.org/jira/browse/JBRULES-2149 Regards, Noel Keating Senior Developer DeCare Systems Ireland +353 21 492-5188 nkeat...@decaresystems.ie blog.decaresystems.ie This e-mail and any files transmitted with it are intended solely for the individual or entity to whom they are addressed. This communication may contain material that is privileged, confidential and protected from disclosure under the law. If you are not the intended recipient, any disclosure, distribution, copying, or use of this information is strictly prohibited and may be unlawful. If you have received this e-mail in error, please reply immediately to the sender and delete it. Registered Address: DeCare Systems Ireland Ltd, Building 1, University Technology Centre, Curraheen Road, Cork, Ireland. Company Registration Number: 278462 ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Run Drool Application From Command Prompt (Close this thread)
Hi Greg !! Now I am able to run the application from command prompt. You were right, the problem was of bootstrap class path. Thank you so much...I really appreciate your help. Now we can close this thread... Thanks Regards: Pankaj Jain | LT infotech |Navi Mumbai Mobile: +91 9920218945 Email : pankaj.j...@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: LT Infotech Proprietary LT Infotech Confidential LT Infotech Internal Use Only LT 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. Greg Barton greg_bar...@yahoo.com Sent by: rules-users-boun...@lists.jboss.org 07/28/2009 12:02 PM Please respond to Rules Users List rules-users@lists.jboss.org To Rules Users List rules-users@lists.jboss.org cc Subject Re: [rules-users] Run Drool Application From Command Prompt Well, there you go. :) Just put drools into the regular classpath and not the bootstrap classpath. Is that possible? --- On Tue, 7/28/09, pankaj.j...@lntinfotech.com pankaj.j...@lntinfotech.com wrote: From: pankaj.j...@lntinfotech.com pankaj.j...@lntinfotech.com Subject: Re: [rules-users] Run Drool Application From Command Prompt To: Rules Users List rules-users@lists.jboss.org Date: Tuesday, July 28, 2009, 1:23 AM Hi you r right, When I run the application (integrated with OFBiz) from command prompt I get the NPE: in line getClass().getClassLoader().loadClass( org.eclipse.jdt.internal.compiler.Compiler ); When I run the application (ofcourse integrated with OFBiz) from eclipse I don't get NPE exception. In ofbiz we have a batch file named startofbiz.bat to run the application, inside this I configured the classpath by this set VMARGS=-Xbootclasspath/p:applications\order\lib\antlr-runtime.jar set VMARGS=-Xbootclasspath/p:applications\order\lib\drools-api.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\drools-compiler.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\drools-core.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\drools-decisiontables.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\drools-jsr94.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\drools-templates.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\joda-time.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\jsr94.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\jxl.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\mvel2.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\org.eclipse.jdt.core_3.4.4.v_894_R34x.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\xpp3.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\xpp3_min.jar %VMARGS% set VMARGS=-Xbootclasspath/p:applications\order\lib\xstream.jar %VMARGS% If i don't do this I get the class not found exception Thanks Regards: Pankaj Jain | LT infotech |Navi Mumbai Mobile: +91 9920218945 Email : pankaj.j...@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: LT Infotech Proprietary LT Infotech Confidential LT Infotech Internal Use Only LT 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. Greg Barton greg_bar...@yahoo.com Sent by: rules-users-boun...@lists.jboss.org 07/28/2009 11:29 AM Please respond to Rules Users List rules-users@lists.jboss.org To Rules Users List rules-users@lists.jboss.org cc Subject Re: [rules-users] Run Drool Application From Command Prompt It's unclear from your post when you get the NPE: from the command line, from eclipse, or when integrated with OFBiz. (I assume you're referring to http://ofbiz.apache.org/) It's undoubtedly a classpath issue. Just peek at the source a bit. I'm not sure what version you're using, but if you look at the source in the svn repo you'll see that line 92 of JavaDialectConfiguration is this: getClass().getClassLoader().loadClass( org.eclipse.jdt.internal.compiler.Compiler ); See the javadoc for
Re: [rules-users] Integrating Drools5.0 into J2EE APP
Thanks for your response. Can we configure Guvnor to use existing production SVN repository for version managment like we do for other java projects ? thanks Sumant From: Mauricio Salatino sala...@gmail.com To: Rules Users List rules-users@lists.jboss.org Sent: Monday, July 27, 2009 6:34:35 PM Subject: Re: [rules-users] Integrating Drools5.0 into J2EE APP 2009/7/27 Sumant Kumar amul...@yahoo.com: Hi, Can somebody describe in a high level how the Drools components ( Guvnor,Expert, etc) are integrated into J2EE app. I am looking for these items as part of Drools deployment configuration 1) How are rules saved ( File system or DB ) In guvnor (JCR) 2) How is rule versioning enabled ( with Subversion ) In guvnor (JCR) 3) Rules and RuleSet granularity . How many rules should go in one DRL. It depends on your business model 4) Facts: Are facts defined as POJOs and uploaded to Drools or Declarative FACTs are defined in Drools Guvnor In guvnor (JCR) Any links over the web will be great too. thanks Sam ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- - http://salaboy.wordpress.com - http://www.jbug.com.ar - Salatino Salaboy Mauricio - ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Run Drool Application From Command Prompt
try including ANTLR.jar in your classpath. From: pankaj.j...@lntinfotech.com pankaj.j...@lntinfotech.com To: rules-users@lists.jboss.org Sent: Tuesday, July 28, 2009 12:50:29 AM Subject: Re: [rules-users] Run Drool Application From Command Prompt 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 | LT infotech |Navi Mumbai Mobile: +91 9920218945 Email : pankaj.j...@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: LT Infotech Proprietary LT Infotech Confidential LT Infotech Internal Use Only LT 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@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Integrating Drools5.0 into J2EE APP
I don't think so, because it's based on JCR (and Dublin core standard) to manage the versions of the assets 2009/7/28 Sumant Kumar amul...@yahoo.com: Thanks for your response. Can we configure Guvnor to use existing production SVN repository for version managment like we do for other java projects ? thanks Sumant From: Mauricio Salatino sala...@gmail.com To: Rules Users List rules-users@lists.jboss.org Sent: Monday, July 27, 2009 6:34:35 PM Subject: Re: [rules-users] Integrating Drools5.0 into J2EE APP 2009/7/27 Sumant Kumar amul...@yahoo.com: Hi, Can somebody describe in a high level how the Drools components ( Guvnor,Expert, etc) are integrated into J2EE app. I am looking for these items as part of Drools deployment configuration 1) How are rules saved ( File system or DB ) In guvnor (JCR) 2) How is rule versioning enabled ( with Subversion ) In guvnor (JCR) 3) Rules and RuleSet granularity . How many rules should go in one DRL. It depends on your business model 4) Facts: Are facts defined as POJOs and uploaded to Drools or Declarative FACTs are defined in Drools Guvnor In guvnor (JCR) Any links over the web will be great too. thanks Sam ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- - http://salaboy.wordpress.com - http://www.jbug.com.ar - Salatino Salaboy Mauricio - ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- - http://salaboy.wordpress.com - http://www.jbug.com.ar - Salatino Salaboy Mauricio - ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Using eval in LHS
Thanks to Greg for sending out a simplified example. I've one more query. Is there any operators to do calculation on fixed time window? Here is the scenario. My data will stream into the engine starting from second 0. 0,0,0,0,1,1,1,1,...60,61...120,121180,181. If I want to find average between 0 to 60 sec, that is the previous minute of 61 to 120, how can I achieve this? I feel sliding window will not help me. Suggestions are welcomed. 2009/7/28 Greg Barton greg_bar...@yahoo.com See the attached project. You can run it using maven with this command: mvn package exec:java -Dexec.mainClass=com.sample.DroolsTest There are three basic rules: MakeCollision: Detect that a collision has happened MatchCollision: Match vehicles to collisions IdentifyLargeCollision: Find collisions that are large rule MakeCollision salience 10 when s : Sighting( collision == null ) not Collision( direction == s.direction, position == s.position, lane == s.lane ) then Collision c = new Collision( s.direction, s.position, s.lane ); c.getSightings().add( s ); s.setCollision( c ); System.out.println(Creating + c); update( s ); insert( c ); end rule MatchCollision salience 10 when s : Sighting( collision == null ) c : Collision( direction == s.direction, position == s.position, lane == s.lane ) then c.getSightings().add( s ); s.setCollision( c ); System.out.println(Matching + s); update( s ); update( c ); end rule IdentifyLargeCollision salience 5 when num : Number ( intValue 1 ) from accumulate ( Collision( sightings.size 2 ), init( int count = 0; ), action( count++; ), reverse( count--; ), result( count ) ); then System.out.println(Found + num); end --- On Fri, 7/24/09, nash.8...@gmail.com nash.8...@gmail.com wrote: From: nash.8...@gmail.com nash.8...@gmail.com Subject: Re: [rules-users] Using eval in LHS To: Rules Users List rules-users@lists.jboss.org Date: Friday, July 24, 2009, 2:16 PM Thanks Greg. The reason I chose HashMap is that an accident is said to occur if and only if more than 1 vehicle contains four consecutive position report as same. So in my hashmap key is vehicle id and value is the no. Of times same position report received... Can you suggest me a way to 1. Collect all vehicles stopped at some point and the occurance of that event is reported more than thrice 2. Report accident if there are more than one vehicle found in step 1 ---Priya -original message- Subject: Re: [rules-users] Using eval in LHS From: Greg Barton greg_bar...@yahoo.com Date: 24/07/2009 10:36 pm Try this: rule Create Collision Location salience 90 no-loop true when vehLoc : VehicleLocation() not CollisionLocation(xway == vehLoc.xway, pos == vehLoc.pos, dir == vehLoc.dir, lane == vehLoc.lane) then CollisionLocation collisionLoc = new CollisionLocation(vehLoc.getXway(), vehLoc.getPos(), vehLoc.getDir(), vehLoc.getLane()); insert(collisionLoc); end rule Collect Collided Vehicles salience 90 no-loop true when vehLoc : VehicleLocation() $collisionLoc : CollisionLocation(xway == vehLoc.xway, pos == vehLoc.pos, dir == vehLoc.dir, lane == vehLoc.lane) then collisionLoc.getVehicleLocations().add(vehLoc); update(collisionLoc); end And now, the rule that detects more than three coinciding vehicle locations is simple: rule Detect Too Many when CollisionLocation(vehicleLocations.size 2) then ...foo... end And, if you want to make the execution a bit more efficient, put a reference in VehicleLocation to it's associated CollisionLocation. That way you can have vehLoc : VehicleLocation(collisionLocation == null) to reduce partial matches. --- On Fri, 7/24/09, PriyaSha nash.8...@gmail.com wrote: From: PriyaSha nash.8...@gmail.com Subject: [rules-users] Using eval in LHS To: rules-users@lists.jboss.org Date: Friday, July 24, 2009, 10:45 AM Input: 0,0,107,32,0,0,0,10,53320,-1,-1,-1,-1,-1,-1 0,0,107,32,0,0,0,10,53320,-1,-1,-1,-1,-1,-1 0,0,107,32,0,0,0,10,53320,-1,-1,-1,-1,-1,-1 0,0,107,32,0,0,0,10,53320,-1,-1,-1,-1,-1,-1 0,0,109,20,0,0,0,19,100644,-1,-1,-1,-1,-1,-1 0,0,109,20,0,0,0,19,100644,-1,-1,-1,-1,-1,-1 0,0,106,28,0,0,0,26,137745,-1,-1,-1,-1,-1,-1 0,0,108,32,0,0,0,67,354281,-1,-1,-1,-1,-1,-1
Re: [rules-users] Problem with JPA session persistence in Drools Flow (5.0.1)
Ok, I will try to take a look at it.. this week..
I will let you know if I can fix it
2009/7/28 DroolsUser rafiuddin...@gmail.com:
Mark / salaboy, I am also facing same problem while recreate the session
from database. Can you advice any alternative, so that I can go forward till
the next release. Moreover when is the new release is ... Do new release
will targeting this kind problem? Please suggest any alternative to recreate
the session from db. Thanks in advance..
gairey wrote:
Mark, Done: https://jira.jboss.org/jira/browse/JBRULES-2199 - thanks for the
quick response. Regards, Alan Mark Proctor Sent by:
rules-users-boun...@lists.jboss.org 08/07/2009 13:49 Please respond to Rules
Users List To Rules Users List cc Subject Re: [rules-users] Problem with JPA
session persistence in Drools Flow (5.0.1) Can you open a JIRA for this, and
we'll make sure it's done in the next few weeks:
https://jira.jboss.org/jira/browse/JBRULES thanks Mark
alan.gai...@tessella.com wrote: I'm currently using Drools Flow with JPA
session persistence enabled as described in section 5.1 of the User Guide.
As a process executes, session information is saved to the H2 database
correctly. The problem comes if a process only executes part way through,
and I then try to finish the process by recreating a session using the code:
// recreate the session from database using the sessionId ksession =
JPAKnowledgeService.loadStatefulKnowledgeSession( sessionId, kbase, null,
env ); This gives me a NullPointerException. Having looked into the Drools
Flow source code, I think the problem is in the class
drools-persistence-jpa\src\main\java\org\drools\persistence\session\SingleSessionCommandService.java.
The 4th constructor of this class is called as part of the loading of a
knowledge session from the H2 database; this in turn leads to the
afterCompletion method of the inner class SynchronizationImpl being called.
The final two lines of this method are: ((JPAProcessInstanceManager)
((ReteooWorkingMemory)
session).getProcessInstanceManager()).clearProcessInstances();
((JPAWorkItemManager) ((ReteooWorkingMemory)
session).getWorkItemManager()).clearWorkItems(); However, when called via
the route described above, the session member variable of
SingleSessionCommandService has not been set, thus causing the
NullPointerException. (Interestingly, running the unit tests for
drools-persistence-jpa does result in the NullPointerException being thrown
multiple times, although the tests are still listed as having passed.) I
believe enclosing the above two lines as follows will fix the problem: if
(session != null) { ((JPAProcessInstanceManager) ((ReteooWorkingMemory)
session).getProcessInstanceManager()).clearProcessInstances();
((JPAWorkItemManager) ((ReteooWorkingMemory)
session).getWorkItemManager()).clearWorkItems(); } Also, in the 4th
constructor of SingleSessionCommandService, after the session has been set,
the following line needs to be added to ensure the session id is the same as
the session info id: ((ReteooStatefulSession) this.session).setId(
this.sessionInfo.getId() ); (This line is present at the end of the 3rd
constructor.) It would be great if this fix could make it into the Drools
5.1 release. Thanks. ___
rules-users mailing list rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
___ rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
___ rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
View this message in context: Re: Problem with JPA session persistence in
Drools Flow (5.0.1)
Sent from the drools - user mailing list archive at Nabble.com.
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
--
- http://salaboy.wordpress.com
- http://www.jbug.com.ar
- Salatino Salaboy Mauricio -
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Efficiency of using inline evals in Drools 5
Nancy, An inline eval will create a constraint in the corresponding node in the network. I.e., if it is an alpha constraint, the eval() will be added to an alpha node, or if it is a beta constraint, it will be added to the beta node. If it is an alpha constraint, it will be reevaluated every time the fact type changes (in your example, every time the engine is notified of a change in a User fact). If it is a beta constraint, it will be reevaluated every time the fact changes or a fact matching a previous pattern in the same rule changes. Evals are not indexed, so the reevaluation is a bit more costly. It is better to avoid them when possible, but sometimes it is not. []s Edson 2009/7/28 Nancy Dougherty nanc...@stanford.edu Hello! I have a question about how an inline eval function is or isn’t efficient in the algorithm- I have many User objects that I am inserting into Working Memory (in a stateful session), and each User object has as ArrayList of Messages The message class has 2 String fields: text and logid I have custom boolean function user.containsText(String keyword) function that takes in a string, and searches to see if that keyword contained in the text field of one of the message entries in the User message arraylist. If I use an inline eval statement to implement this: $user: User( eval (containsText ( “sample text”) ) ) Will it re-evaluate each time? Or will Drools cache the result and remember it/ create a node based on it so the node will have every user this is true for, and it doesn’t re-evaluate when the users or rules are modified? Will it create a node in the algorithm for all the users that this function is true for? On a similar note, if I use the “matches” comparator in a rule creation, does it create a node and cache the result? Will it automatically re-evaluate each time the field its matched against is modified? Thanks so much! Nancy ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- Edson Tirelli JBoss Drools Core Development JBoss by Red Hat @ www.jboss.com ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Problem when using multiple rule files (Drools 5)
now i found out, that my problems are in relation to my serialized KnowledgePackages. When i use the following code and load the drl files everything is fine ! KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(); kbuilder.add(ResourceFactory.newClassPathResource(rules[i] + .drl)), ResourceType.DRL); But this takes too long, when i used it the first time - so i want to use serialized KnowledgePackages again. So my question is: What is the right way to serialize/deserialize KnowledgePackages ? As you have seen in my posts i used standard readObject/writeObject methods. Is this the right approach ? Thanks. -- View this message in context: http://www.nabble.com/Problem-when-using-multiple-rule-files-%28Drools-5%29-tp24623347p24698087.html Sent from the drools - user mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Problem when using multiple rule files (Drools 5)
now i found out, that my problems are in relation to my serialized KnowledgePackages. When i use the following code and load the drl files everything is fine ! KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(); kbuilder.add(ResourceFactory.newClassPathResource(rules[i] + .drl)), ResourceType.DRL); But this takes too long, when i used it the first time - so i want to use serialized KnowledgePackages again. So my question is: What is the right way to serialize/deserialize KnowledgePackages ? As you have seen in my posts i used standard readObject/writeObject methods. Is this the right approach ? Thanks. -- View this message in context: http://www.nabble.com/Problem-when-using-multiple-rule-files-%28Drools-5%29-tp24623347p24698095.html Sent from the drools - user mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Problem when using multiple rule files (Drools 5)
this approach works fine, I use it this way (import / export)
public CollectionKnowledgePackage importPackages(InputStream input) {
CollectionKnowledgePackage pkgs = Collections.emptyList();
try {
if (input == null || input.available() = 0)
return pkgs;
ObjectInputStream ois = new ObjectInputStream(input);
pkgs = (CollectionKnowledgePackage) ois.readObject();
return pkgs;
} catch (IOException e) {
LOG.warn(IOException during package import : +
e.getMessage());
} catch (ClassNotFoundException e) {
LOG.warn(Class saved in the stream does not exists :
+
e.getMessage());
}
return pkgs;
}
boolean exportPackages(CollectionKnowledgePackage pkgs, OutputStream
output) {
if (pkgs != null pkgs.size() 0 output != null){
try {
ObjectOutputStream oos = new
ObjectOutputStream(output);
oos.writeObject(pkgs);
oos.close();
output.close();
return true;
} catch (IOException e) {
LOG.warn(Error exporting rules package : +
e.getMessage());
}
}
return false;
}
tune it as you want, hope it helps.
Erik Clairiot
On Tue, 28 Jul 2009 06:50:21 -0700 (PDT), Olaf Raether o.raet...@epro.de
wrote:
now i found out, that my problems are in relation to my serialized
KnowledgePackages.
When i use the following code and load the drl files everything is fine !
KnowledgeBuilder kbuilder =
KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(ResourceFactory.newClassPathResource(rules[i] + .drl)),
ResourceType.DRL);
But this takes too long, when i used it the first time - so i want to use
serialized
KnowledgePackages again.
So my question is: What is the right way to serialize/deserialize
KnowledgePackages ?
As you have seen in my posts i used standard readObject/writeObject
methods.
Is this the right approach ?
Thanks.
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] error in writing test scenarios
Hi , While writing the test scenarios,after pressing run scenario button i m getting the below error in the server and showing an alert technical error in the front end . at java.lang.Thread.run(Thread.java:595) Caused by: java.lang.reflect.InvocationTargetException please tel me reason behind that . regards, Vamsi Krishna.Kavuri. http://www.brainyquote.com/quotes/authors/c/charles_de_gaulle.html ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] matching multiple facts in a rule using a DSL template
Hello,
I recently started to use DSL template within my rules.
In the LHS, I oftenly match conditions against multiple facts, facts that I
want to modify in the RHS.
example :
when
$v1 : Variable(id == A)
$v2 : Variable(id == B)
then
$v1.setFoo();
end
If I write a dsl template like that :
[when] there is {id}=v:Variable(id == {id})
[then] foo me=v.setFoo();
and a dsl rule like that
when
there is A
there is B
then
foo me
end
the execution will produce the error Duplicate declaration for variable
...
I understand why it occurs.
how to specify a constraint upon the fact matched ? Dunno if it is
possible, my opinion will be to create another dsl rule, that is supposed
to match with the foo me, but it does not seem to be very convenient.
Is there a way to use an array for variable assignement in the RHS ? like
[when] there is {id}=v[]:Variable(id == {id})
[then] foo me=v[].setFoo();
and use it in the RHS of the rule like
when
there is A
there is B
then
foo me [0] // will cause foo me on the first matched fact
end
There are a lot of chances this does not exist, and works like that, maybe
I am not using DSL well and it is bad idea to match multiple fact with the
same dsl template.
Can someone help me on that ? It is just a question, I am not stuck on
this, but interested on how to deal with that.
Thanks.
Erik
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] How to Enrich Facts with Data from a Database
I would like to append values to facts in working memory with values from a database before rules processing. The Fusion documentation says, “one of the most common use cases for rules is event data enrichment”, but no documentation seems to explain how this is done whether we’re talking about events or just plain old facts. And the RHS syntax seems to be limited to working with data already in working memory. How can I enrich facts with data from another system? Thanks in advance. Ken Archer Telogical Systems ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Relation between Guvnor and Expert in Drools5.0
Guvnor -- This can be used to manage your rules specifically termed as BRMS (Business Rules Management System). This can really play its part from the governance perspective in your company/enterprise/project. Take a look at this URL http://downloads.jboss.com/drools/docs/5.0.1.26597.FINAL/drools-guvnor/html_ single/index.html#d0e78 mainly section 1.1.1 Expert -- This is the actual runtime/development module for the rule engine. Take a look at this part (Chapter 3 - Installation and Setup) of the documentation http://downloads.jboss.com/drools/docs/5.0.1.26597.FINAL/drools-introduction /html_single/index.html#d0e1322 this should help your understanding of various jars and the modules Regards, Vijay _ From: rules-users-boun...@lists.jboss.org [mailto:rules-users-boun...@lists.jboss.org] On Behalf Of Sumant Kumar Sent: Tuesday, July 28, 2009 4:35 PM To: Rules Users List Subject: [rules-users] Relation between Guvnor and Expert in Drools5.0 Hi All, Can you throw some light on Relation between Guvnor and Expert components in Drools5.0. Guvnor sounds like BRMS so does it have Rule engine ( or runtime) to execute rules ?. Is Expert module part of Guvnor ? If Guvnor doesn't have rule engine how does it excute rule when we do QA. I cannot find Expert module for down load. Is Rule engine runtime bunch of jars ( Drools-core.jar etc ) thanks Sumant ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Import Existing DRL in Guvnor never finishes
Hello All, I'm experiencing an issue importing an existing DRL into Guvnor, we made a sample DRL file containing 1000 very simple rules that look something like this: rule testa4 dialect mvel when IOption( selected == false id == 9934 ) messageSection : INode( id == Drivers ) then messageSection.setValidationMessage( null ); messageSection.setValidationMessageDuration( null ); end Each rule has a unique name. The problem is that the import hasn't finished (after over 2 hours) and when we look at the resources that have been imported they have 24 revisions each. It looks like Guvnor is importing the file over and over again. Has anyone experienced anything like this? Thanks, Steve Ronderos___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Issue with operator || in Drools 5.0.1
Chris,
I was not able to reproduce this problem in trunk. Nevertheless, I added
one more integration test for it. If you are able to reproduce it, please
create a test case and open a JIRA and I will check it out.
$ svn commit -m Adding integration test
drools-compiler/src/test/java/org/drools/Person.java
drools-compiler/src/test/java/org/drools/integrationte
sts/MiscTest.java
drools-compiler/src/test/resources/org/drools/integrationtests/test_ConstraintConnectorOr.drl
Sendingdrools-compiler/src/test/java/org/drools/Person.java
Sending
drools-compiler/src/test/java/org/drools/integrationtests/MiscTest.java
Adding
drools-compiler/src/test/resources/org/drools/integrationtests/test_ConstraintConnectorOr.drl
Transmitting file data ...
Committed revision 28549.
[]s
Edson
2009/7/28 Chris Gibble cgib...@excite.com
My apologies if this has already been answered elsewhere -- I searched and
could not find it.
I have a java class that takes this form (simplified for purposes of this
discussion):
public class MyClass()
{
public boolean isHappy();
public boolean isHealthy();
}
I have a rule that looks like this:
rule Some rule
salience 100
when
$obj : MyClass(happy == true || healthy == true)
then
// Do something with $obj
end rule
In Drools 4.x, this rule would perform the conclusion when either
MyClass.isHappy() returned true or MyClass.isHealthy() returned true, but
not if both were false.
In Drools 5.0.1, this rule would perform the conclusion *always* --
regardless of the values of isHappy() or isHealthy().
Any ideas what's going on? Is this a known problem, or is there something
wrong with my syntax and/or class?
Thanks for any help you can give -- and I can give a more concrete example
if need be.
--
Bamboo
Flooringhttp://tagline.excite.com/fc/FgElN1gz4wwE6UWjuk9HgExVihsl6SoJRYkCYdqtuEKvZKZG6s3cKDjBdiI/
The
strong, silent type. Click here for great looking bamboo
flooring!http://tagline.excite.com/fc/FgElN1gz4wwE6UWjuk9HgExVihsl6SoJRYkCYdqtuEKvZKZG6s3cKDjBdiI/
Click
Here For More
Informationhttp://tagline.excite.com/fc/FgElN1gz4wwE6UWjuk9HgExVihsl6SoJRYkCYdqtuEKvZKZG6s3cKDjBdiI/
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
--
Edson Tirelli
JBoss Drools Core Development
JBoss by Red Hat @ www.jboss.com
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
