Hi, I have compiled some rules and added it in packages. Then I serialized those packages and stored in database in the form of CLOB data Now I am able to get Packages back from database and loaded it in RuleBase. But while executing Rule, I am getting the following Exception. java.lang.NullPointerException at org.drools.base.ClassFieldReader.getValue(ClassFieldReader.java:91) at org.drools.base.evaluators.EqualityEvaluatorsDefinition$StringEqualEvaluator.evaluate(EqualityEvaluatorsDefinition.java:1962) at org.drools.rule.LiteralRestriction.isAllowed(LiteralRestriction.java:92) at org.drools.rule.OrCompositeRestriction.isAllowed(OrCompositeRestriction.java:25) at org.drools.rule.MultiRestrictionFieldConstraint.isAllowed(MultiRestrictionFieldConstraint.java:97) at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:143) at org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateAssertObject(CompositeObjectSinkAdapter.java:360) at org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:344) at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:185) at org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:146) at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:1046) at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:1001) at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:788) at org.drools.reteoo.ReteooStatelessSession.execute(ReteooStatelessSession.java:201) The similar kind of issue is already logged by someone. Please inform If anyone has an idea about this. Waiting for Reply. Thanks & Regards, Nikhil S. Kulkarni MASTEK LTD. Mastek is in NASSCOM's 'India Top 20' Software Service Exporters List. In the US, we're called MAJESCOMASTEK ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Opinions expressed in this e-mail are those of the individual and not that of Mastek Limited, unless specifically indicated to that effect. Mastek Limited does not accept any responsibility or liability for it. This e-mail and attachments (if any) transmitted with it are confidential and/or privileged and solely for the use of the intended person or entity to which it is addressed. Any review, re-transmission, dissemination or other use of or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. This e-mail and its attachments have been scanned for the presence of computer viruses. It is the responsibility of the recipient to run the virus check on e-mails and attachments before opening them. If you have received this e-mail in error, kindly delete this e-mail from desktop and server. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

@puneet it may be a good ideia memory wise. I'm doing it right now, in order to compile rules just once. _ miguel 2010/5/5 Puneet duggal <duggalpunit(a)gmail.com&gt; @ Nikhil, > > I am not sure weather it a good practice to seralize a package and store > it , i am new to it and i am storing the drl files in db . > Can we retrive our DRL file after retriving the packge from database.?? > > > On 5/4/10, Nikhil S. Kulkarni <Nikhil.Kulkarni(a)mastek.com&gt; wrote: > >> Hi, >> >> >> >> I have compiled some rules and added it in packages. Then >> I serialized those packages and stored in database in the form of CLOB data >> >> Now I am able to get Packages back from database and loaded it in >> RuleBase. >> >> But while executing Rule, I am getting the following Exception. >> >> >> >> java.lang.NullPointerException >> >> at >> org.drools.base.ClassFieldReader.getValue(ClassFieldReader.java:91) >> >> at >> org.drools.base.evaluators.EqualityEvaluatorsDefinition$StringEqualEvaluator.evaluate(EqualityEvaluatorsDefinition.java:1962) >> >> at >> org.drools.rule.LiteralRestriction.isAllowed(LiteralRestriction.java:92) >> >> at >> org.drools.rule.OrCompositeRestriction.isAllowed(OrCompositeRestriction.java:25) >> >> at >> org.drools.rule.MultiRestrictionFieldConstraint.isAllowed(MultiRestrictionFieldConstraint.java:97) >> >> at >> org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:143) >> >> at >> org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateAssertObject(CompositeObjectSinkAdapter.java:360) >> >> at >> org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:344) >> >> at >> org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:185) >> >> at >> org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:146) >> >> at >> org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:1046) >> >> at >> org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:1001) >> >> at >> org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:788) >> >> at >> org.drools.reteoo.ReteooStatelessSession.execute(ReteooStatelessSession.java:201) >> >> >> >> The similar kind of issue is already logged by someone. >> >> >> >> Please inform If anyone has an idea about this. >> >> Waiting for Reply. >> >> >> >> Thanks & Regards, >> >> Nikhil S. Kulkarni >> >> >> >> >> >> MASTEK LTD. >> Mastek is in NASSCOM's 'India Top 20' Software Service Exporters List. >> In the US, we're called MAJESCOMASTEK >> >> >> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> >> Opinions expressed in this e-mail are those of the individual and not that of Mastek Limited, unless specifically indicated to that effect. Mastek Limited does not accept any responsibility or liability for it. This e-mail and attachments (if any) transmitted with it are confidential and/or privileged and solely for the use of the intended person or entity to which it is addressed. Any review, re-transmission, dissemination or other use of or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. This e-mail and its attachments have been scanned for the presence of computer viruses. It is the responsibility of the recipient to run the virus check on e-mails and attachments before opening them. If you have received this e-mail in error, kindly delete this e-mail from desktop and server. >> >> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> >> >> _______________________________________________ >> 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 > > -- "To understand what is recursion you must first understand recursion" _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users