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) ... -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira