[jboss-jira] [JBoss JIRA] Commented: (JBRULES-2147) NullPointerException in org.drools.rule.builder.PatternBuilder.getDeclarationsMap()

[Juergen none (JIRA)]

    [ https://jira.jboss.org/jira/browse/JBRULES-2147?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12474167#action_12474167 ] 

Juergen none commented on JBRULES-2147:
---------------------------------------

was a type: attribute name was schoolType, not schoolForm
no NullPointerException after replacing
still, could be better handled

> NullPointerException in org.drools.rule.builder.PatternBuilder.getDeclarationsMap()
> -----------------------------------------------------------------------------------
>
>                 Key: JBRULES-2147
>                 URL: https://jira.jboss.org/jira/browse/JBRULES-2147
>             Project: JBoss Drools
>          Issue Type: Feature Request
>      Security Level: Public(Everyone can see) 
>          Components: drools-compiler (expert)
>    Affects Versions: 5.0.1.FINAL
>         Environment: java 1.5, linux x64, jboss 4.0.5
>            Reporter: Juergen none
>            Assignee: Mark Proctor
>
> I understand my rules/fact objects might not be proper (still searching), but resulting in a NullPointerException is not proper as well
> entry.getValue().getExtractor().getExtractToClass() yields NullPointerException, because entry.getValue().getExtractor() is null
> eclipse debug variable:
> value	org.drools.rule.Declaration  (id=502)	
> 	identifier	"schoolForm" (id=501)	
> 	internalFact	false	
> 	pattern	org.drools.rule.Pattern  (id=508)	
> 		behaviors	null	
> 		constraints	java.util.ArrayList<E>  (id=520)	
> 		declaration	org.drools.rule.Declaration  (id=521)	
> 		declarations	java.util.HashMap<K,V>  (id=522)	
> 		index	1	
> 		objectType	org.drools.base.ClassObjectType  (id=524)	
> 		offset	0	
> 		source	null	
> 	readAccessor	null	
> Stacktrace:
> java.lang.reflect.InvocationTargetException
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:585)
> ...
>         at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
>         at java.lang.Thread.run(Thread.java:595)
> Caused by: java.lang.NullPointerException
>         at org.drools.rule.builder.PatternBuilder.getDeclarationsMap(PatternBuilder.java:641)
>         at org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:574)
>         at org.drools.rule.builder.PatternBuilder.buildConstraint(PatternBuilder.java:244)
>         at org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:196)
>         at org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:104)
>         at org.drools.rule.builder.GroupElementBuilder.build(GroupElementBuilder.java:69)
>         at org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:68)
>         at org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1159)
>         at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:649)
>         at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:278)
>         at org.drools.jsr94.rules.admin.LocalRuleExecutionSetProviderImpl.createRuleExecutionSet(LocalRuleExecutionSetProviderImpl.java:158)
>         at org.drools.jsr94.rules.admin.LocalRuleExecutionSetProviderImpl.createRuleExecutionSet(LocalRuleExecutionSetProviderImpl.java:93)
> ...

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