[jboss-jira] [JBoss JIRA] Updated: (JBRULES-3014) Too many error messages (and stack dumps!) due to simple syntax error

[Geoffrey De Smet (JIRA)]

     [ https://issues.jboss.org/browse/JBRULES-3014?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Geoffrey De Smet updated JBRULES-3014:
--------------------------------------

    Fix Version/s: 5.3.0.Final
                       (was: 5.3.0.CR1)


> Too many error messages (and stack dumps!) due to simple syntax error
> ---------------------------------------------------------------------
>
>                 Key: JBRULES-3014
>                 URL: https://issues.jboss.org/browse/JBRULES-3014
>             Project: Drools
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: drools-compiler (expert)
>    Affects Versions: 5.2.0.M2
>            Reporter: Wolfgang Laun
>            Assignee: Edson Tirelli
>             Fix For: 5.3.0.Final
>
>
> Person( age > ($age * 2) ) )  ### typo - note the redundant ')'
> This produces nested Empty Stack and Class Cast Exceptions, lots of stack dumps and three error messages:
> [0,0]: Line 30:0 unexpected exception at input 'rule'. Exception: java.util.EmptyStackException. Stack trace:
>  java.util.EmptyStackException
> 	at java.util.Stack.peek(Stack.java:85)
> 	at java.util.Stack.pop(Stack.java:67)
> 	at org.drools.lang.ParserHelper.popParaphrases(ParserHelper.java:409)
> 	at org.drools.lang.ParserHelper.end(ParserHelper.java:723)
> 	at org.drools.lang.DRLParser.rule(DRLParser.java:915)
> 	at org.drools.lang.DRLParser.statement(DRLParser.java:248)
> 	at org.drools.lang.DRLParser.compilationUnit(DRLParser.java:143)
> 	at org.drools.compiler.DrlParser.compile(DrlParser.java:225)
> 	at org.drools.compiler.DrlParser.parse(DrlParser.java:136)
> 	at org.drools.compiler.DrlParser.parse(DrlParser.java:141)
> 	at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:307)
> 	at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:486)
> 	at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28)
> 	at express.Main.setup(Main.java:48)
> 	at express.Main.main(Main.java:92)
> [0,0]: Line 31:8 unexpected exception at input '"mvel"'. Exception: java.lang.ClassCastException: org.drools.lang.api.CEDescrBuilderImpl cannot be cast to org.drools.lang.api.AttributeSupportBuilder. Stack trace:
>  java.lang.ClassCastException: org.drools.lang.api.CEDescrBuilderImpl cannot be cast to org.drools.lang.api.AttributeSupportBuilder
> 	at org.drools.lang.ParserHelper.start(ParserHelper.java:667)
> 	at org.drools.lang.DRLParser.stringAttribute(DRLParser.java:1294)
> 	at org.drools.lang.DRLParser.attribute(DRLParser.java:1073)
> 	at org.drools.lang.DRLParser.statement(DRLParser.java:257)
> 	at org.drools.lang.DRLParser.compilationUnit(DRLParser.java:143)
> 	at org.drools.compiler.DrlParser.compile(DrlParser.java:225)
> 	at org.drools.compiler.DrlParser.parse(DrlParser.java:136)
> 	at org.drools.compiler.DrlParser.parse(DrlParser.java:141)
> 	at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:307)
> 	at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:486)
> 	at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28)
> 	at express.Main.setup(Main.java:48)
> 	at express.Main.main(Main.java:92)
> [31,8]: [ERR 107] Line 31:8 mismatched input '"mvel"' expecting one of the following tokens: '[package, import, global, declare, function, rule, query]'.
> [0,0]: Line 39:0 unexpected exception at input 'rule'. Exception: java.util.EmptyStackException. Stack trace:
>  java.util.EmptyStackException
> 	at java.util.Stack.peek(Stack.java:85)
> 	at java.util.Stack.pop(Stack.java:67)
> 	at org.drools.lang.ParserHelper.popParaphrases(ParserHelper.java:409)
> 	at org.drools.lang.ParserHelper.end(ParserHelper.java:723)
> 	at org.drools.lang.DRLParser.rule(DRLParser.java:915)
> 	at org.drools.lang.DRLParser.statement(DRLParser.java:248)
> 	at org.drools.lang.DRLParser.compilationUnit(DRLParser.java:143)
> 	at org.drools.compiler.DrlParser.compile(DrlParser.java:225)
> 	at org.drools.compiler.DrlParser.parse(DrlParser.java:136)
> 	at org.drools.compiler.DrlParser.parse(DrlParser.java:141)
> 	at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:307)
> 	at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:486)
> 	at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28)
> 	at express.Main.setup(Main.java:48)
> 	at express.Main.main(Main.java:92)

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