[jboss-jira] [JBoss JIRA] (JBRULES-3113) MVEL accepts funny comparison and evaluates without apparent semantics

[Geoffrey De Smet (Updated) (JIRA)]

     [ https://issues.jboss.org/browse/JBRULES-3113?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Geoffrey De Smet updated JBRULES-3113:
--------------------------------------

    Fix Version/s: 5.4.0.Beta2
                       (was: 5.4.0.Beta1)

    
> MVEL accepts funny comparison and evaluates without apparent semantics
> ----------------------------------------------------------------------
>
>                 Key: JBRULES-3113
>                 URL: https://issues.jboss.org/browse/JBRULES-3113
>             Project: Drools
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: drools-compiler (expert)
>    Affects Versions: 5.2.0.Final
>            Reporter: Wolfgang Laun
>            Assignee: Edson Tirelli
>             Fix For: 5.4.0.Beta2
>
>
> Without "dialect 'mvel'", the funny expression in eval() is (correctly) refused by the compiler (" The operator == is undefined for the argument type(s) boolean, int"). Using MVEL, the rule compiles and fires, apparently with random values for $int3 and $long4:
> test5 1 1 65536 4294967296
> test5 1 1 65568 4294967296
> test5 1 1 65552 4294967296
> test5 1 1 65536 65536
> test5 1 1 65568 65536
> test5 1 1 65552 65536
> test5 1 1 65536 65568
> test5 1 1 65536 65552
> test5 1 1 65568 65568
> test5 1 1 65552 65568
> test5 1 1 65568 65552
> test5 1 1 65552 65552
> === DRL ===
> dialect "mvel"
> rule kickOff
> when
> then
>     insert( Integer.valueOf( 1 ) );
>     insert( Long.valueOf( 1 ) );
>     insert( Integer.valueOf( 65552 ) );   // 0x10010
>     insert( Long.valueOf( 65552 ) );
>     insert( Integer.valueOf( 65568 ) );   // 0x10020
>     insert( Long.valueOf( 65568 ) );
>     insert( Integer.valueOf( 65536  ) );  // 0x10000
>     insert( Long.valueOf( 65536L ) );
>     insert( Long.valueOf( 4294967296L ) );  // 0x100000000L
> end
> rule test5
> salience 100
> when
>     $n1: Integer( $int1: intValue == 1 )
>     $n2: Long   ( $long2: longValue )
>     $n3: Integer( this != $n1, $int3: intValue )
>     $n4: Long   ( this != $n2, $long4: longValue )
>     eval( $int1 == $long2 == $int3 == $long4 )
> then
>     System.out.println( "test5 " + $int1  + " "
>                                  + $long2 + " "
>                                  + $int3  + " "
>                                  + $long4  );
> end

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