[jboss-jira] [JBoss JIRA] Updated: (JBRULES-1440) Support for Nested Templates

[greywind (JIRA)]

     [ http://jira.jboss.com/jira/browse/JBRULES-1440?page=all ]

greywind updated JBRULES-1440:
------------------------------

    Attachment: current.drl

This is what is currently possible.

The 'nested' Facts have type Object. due to that I cannot access the Properties directly but have to use the from clause.
If I do try to access it directly I do get an ArrayIndexOutOfBoundsException in mvel and an (org.drools.RuntimeDroolsException: This is a bug. Please report to development team: org.drools.facttemplates.FactTemplateFieldExtractor.getValue(java.lang.Object)) in java

org.mvel.PropertyAccessException: unable to resolve property: out.println("Found: " + name + ", " + id)
	at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:285)
	at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:109)
	at org.mvel.ast.LiteralDeepPropertyNode.getReducedValueAccelerated(LiteralDeepPropertyNode.java:28)
	at org.mvel.MVELRuntime.execute(MVELRuntime.java:88)
	at org.mvel.CompiledExpression.getValue(CompiledExpression.java:111)
	at org.mvel.MVEL.executeExpression(MVEL.java:235)
	at org.drools.base.mvel.MVELConsequence.evaluate(MVELConsequence.java:47)
	at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:550)
	at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:514)
	at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:471)
	at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:433)
	at org.drools.entity.EntityTest.main(EntityTest.java:102)
Caused by: java.lang.ArrayIndexOutOfBoundsException: -1
	at org.drools.facttemplates.FactImpl.getFieldValue(FactImpl.java:83)
	at org.drools.facttemplates.FactTemplateFieldExtractor.getValue(FactTemplateFieldExtractor.java:30)
	at org.drools.rule.Declaration.getValue(Declaration.java:198)
	at org.drools.base.mvel.DroolsMVELPreviousDeclarationVariable.getValue(DroolsMVELPreviousDeclarationVariable.java:32)
	at org.mvel.ast.VarPropertyNode.getReducedValueAccelerated(VarPropertyNode.java:18)
	at org.mvel.ast.PropertyASTNode.initializePropertyNode(PropertyASTNode.java:112)
	at org.mvel.ast.PropertyASTNode.getReducedValueAccelerated(PropertyASTNode.java:26)
	at org.mvel.ast.BinaryOperation.getReducedValueAccelerated(BinaryOperation.java:21)
	at org.mvel.ExecutableAccessor.getValue(ExecutableAccessor.java:45)
	at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:521)
	at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:260)
	... 11 more
Exception in thread "main" org.drools.spi.ConsequenceException: org.mvel.PropertyAccessException: unable to resolve property: out.println("Found: " + name + ", " + id)
	at org.drools.base.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:14)
	at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:554)
	at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:514)
	at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:471)
	at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:433)
	at org.drools.entity.EntityTest.main(EntityTest.java:102)
Caused by: org.mvel.PropertyAccessException: unable to resolve property: out.println("Found: " + name + ", " + id)
	at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:285)
	at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:109)
	at org.mvel.ast.LiteralDeepPropertyNode.getReducedValueAccelerated(LiteralDeepPropertyNode.java:28)
	at org.mvel.MVELRuntime.execute(MVELRuntime.java:88)
	at org.mvel.CompiledExpression.getValue(CompiledExpression.java:111)
	at org.mvel.MVEL.executeExpression(MVEL.java:235)
	at org.drools.base.mvel.MVELConsequence.evaluate(MVELConsequence.java:47)
	at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:550)
	... 4 more
Caused by: java.lang.ArrayIndexOutOfBoundsException: -1
	at org.drools.facttemplates.FactImpl.getFieldValue(FactImpl.java:83)
	at org.drools.facttemplates.FactTemplateFieldExtractor.getValue(FactTemplateFieldExtractor.java:30)
	at org.drools.rule.Declaration.getValue(Declaration.java:198)
	at org.drools.base.mvel.DroolsMVELPreviousDeclarationVariable.getValue(DroolsMVELPreviousDeclarationVariable.java:32)
	at org.mvel.ast.VarPropertyNode.getReducedValueAccelerated(VarPropertyNode.java:18)
	at org.mvel.ast.PropertyASTNode.initializePropertyNode(PropertyASTNode.java:112)
	at org.mvel.ast.PropertyASTNode.getReducedValueAccelerated(PropertyASTNode.java:26)
	at org.mvel.ast.BinaryOperation.getReducedValueAccelerated(BinaryOperation.java:21)
	at org.mvel.ExecutableAccessor.getValue(ExecutableAccessor.java:45)
	at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:521)
	at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:260)
	... 11 more


> Support for Nested Templates
> ----------------------------
>
>                 Key: JBRULES-1440
>                 URL: http://jira.jboss.com/jira/browse/JBRULES-1440
>             Project: JBoss Drools
>          Issue Type: Feature Request
>      Security Level: Public(Everyone can see) 
>          Components: All
>    Affects Versions: 4.0.4
>            Reporter: greywind
>         Attachments: current.drl
>
>
> I have to need to use fact templates but I still want to be able to use nested properties. Currently I cannot do that fully.
> What I can do is what is in attachment 'current'. What I would like to do is in attachment 'wanted'

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