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Bug
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Resolution: Done
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Major
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6.1.0.Final
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None
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None
We have embedded Drools in our project and use FactTemplates. While attempting to upgrade from Drools 5.3 to 6.1, we are receiving a ClassCastException in org.drools.compiler.rule.builder.PatternBuilder when loading and compiling rules.
The problem is evident upon inspection of the code. In method build(RuleBuildContext, BaseDescr, Pattern), the local var objectType can be either a FactTemplateObjectType or a ClassObjectType, but line 258 does not check the type before attempting the cast.
java.lang.ClassCastException: org.drools.core.facttemplates.FactTemplateObjectType cannot be cast to org.drools.core.base.ClassObjectType at org.drools.compiler.rule.builder.PatternBuilder.build(PatternBuilder.java:258) at org.drools.compiler.rule.builder.PatternBuilder.build(PatternBuilder.java:138) at org.drools.compiler.rule.builder.GroupElementBuilder.build(GroupElementBuilder.java:66) at org.drools.compiler.rule.builder.RuleBuilder.build(RuleBuilder.java:89) at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.addRule(KnowledgeBuilderImpl.java:1652) at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.compileRules(KnowledgeBuilderImpl.java:968) at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.compileAllRules(KnowledgeBuilderImpl.java:844) at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.addPackage(KnowledgeBuilderImpl.java:838) at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.addPackageFromDrl(KnowledgeBuilderImpl.java:339) at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.addPackageFromDrl(KnowledgeBuilderImpl.java:315) ...
