subject:"\[rules\-users\] Getting an Error While Executing Rule in Drools 5.0"

Re: [rules-users] Getting an Error While Executing Rule in Drools 5.0

2010-05-05 Thread miguel machado

@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 duggalpu...@gmail.com

@ 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.kulka...@mastek.com 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.
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Re: [rules-users] Getting an Error While Executing Rule in Drools 5.0

2010-05-05 Thread Puneet duggal

ohk compiling the rule and storing it
its really a good for memory

On 5/5/10, miguel machado mls.mach...@gmail.com wrote:

@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 duggalpu...@gmail.com

@ 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.??