[jboss-jira] [JBoss JIRA] Created: (JBRULES-3052) CCE when using variable bound to accumulate function in RHS code

[Wolfgang Laun (JIRA)]

CCE when using variable bound to accumulate function in RHS code
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                 Key: JBRULES-3052
                 URL: https://issues.jboss.org/browse/JBRULES-3052
             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: Mark Proctor
             Fix For: 5.2.0.CR1


The rule in the test case crashes during execution with 
java.lang.ClassCastException: java.lang.Double cannot be cast to [Ljava.lang.Object;
        at org.drools.base.extractors.ArrayElementReader.getValue(ArrayElementReader.java:162)
        at org.drools.rule.Declaration.getValue(Declaration.java:219)

This is meant to be part of AccumulateTest.java.

   public void execTestAccumulateMinMax() throws Exception {
        String drl = "package org.drools.test; " +
        		"import org.drools.Cheese; " +
        		"global java.util.List results; " +
        		"rule minMax " +
                "when " +
                "$min1: Number( $min2: intValue ) " +
                "from accumulate( Cheese( $p: price ), $min3: min($p), $max: max($p) ) " +
                "then " +
                "results.add($min1); results.add($min2); results.add($min3); results.add($max); " +
                "end ";        
        
        final Reader reader = new StringReader( drl );
        final RuleBase ruleBase = loadRuleBase( reader );
        final WorkingMemory wm = ruleBase.newStatefulSession();

        final List results = new ArrayList();
        wm.setGlobal( "results", results );
        final Cheese[] cheese = new Cheese[]{
                new Cheese( "Emmentaler",        4 ),
                new Cheese( "Appenzeller",       6 ),
                new Cheese( "Greyerzer",         2 ),
                new Cheese( "Raclette",          3 ),
                new Cheese( "Olmützer Quargel", 15 ),
                new Cheese( "Brie",             17 ),
                new Cheese( "Dolcelatte",        8 ) };

        final FactHandle[] cheeseHandles = new FactHandle[cheese.length];
        for ( int i = 0; i < cheese.length; i++ ) {
            cheeseHandles[i] = wm.insert( cheese[i] );
        }

        // ---------------- 1st scenario
        wm.fireAllRules();
        assertEquals( 4, results.size() );
        assertEquals( results.get(0), Integer.valueOf( 2 ) );
        assertEquals( results.get(1), Integer.valueOf( 2 ) );
        assertEquals( results.get(2), Integer.valueOf( 2 ) );
        assertEquals( results.get(3), Integer.valueOf( 17 ) );
    }
    

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