[jboss-jira] [JBoss JIRA] Created: (JBRULES-3113) MVEL accepts funny comparison and evaluates without apparent semantics
MVEL accepts funny comparison and evaluates without apparent semantics
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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: Mark Proctor
Fix For: 5.3.0.Beta1
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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