[jboss-jira] [JBoss JIRA] Commented: (JBRULES-904) ArrayIndexOutOfBoundsException in org.drools.util.TupleIndexHashTable.toArray

[Dirk Bergstrom (JIRA)]

    [ http://jira.jboss.com/jira/browse/JBRULES-904?page=comments#action_12364304 ] 
            
Dirk Bergstrom commented on JBRULES-904:
----------------------------------------

I hacked the method to get some diagnostic info out of it -- bumped up the size of the result array, and added some println() calls:

  public Entry[] toArray() {
        Entry[] result = new Entry[this.size*1000];
        System.out.println("this.size=" + this.size);
        int index = 0;
        System.out.println("this.table.length=" + this.table.length);
        for ( int i = 0; i < this.table.length; i++ ) {
            FieldIndexEntry fieldIndexEntry = (FieldIndexEntry)this.table[i];
            if ( fieldIndexEntry != null ) {
        System.out.println("New non-null fieldIndexEntry");
                Entry entry = fieldIndexEntry.getFirst();
                while ( entry != null ) {
                        System.out.println("index=" + index);
                    result[index++] = entry;
                    entry = entry.getNext();
                }
            }
        }
        return result;
    }

Running with this method, I get the following output:

this.size=26
this.table.length=64
New non-null fieldIndexEntry
index=0
[...]
index=96
New non-null fieldIndexEntry
index=97
[...]
index=193
New non-null fieldIndexEntry
[...]
Repeating at:
290
387
484
581
678
775
876
977
1074
1171
1268
1365
1462
1559
1656
1753
1850
Ending at:
index=1951


> ArrayIndexOutOfBoundsException in org.drools.util.TupleIndexHashTable.toArray
> -----------------------------------------------------------------------------
>
>                 Key: JBRULES-904
>                 URL: http://jira.jboss.com/jira/browse/JBRULES-904
>             Project: JBoss Rules
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>    Affects Versions:  4.0.0.MR3
>         Environment: Java 1.5
>            Reporter: Dirk Bergstrom
>         Assigned To: Mark Proctor
>
> When asserting a particular object type, I get the following stacktrace:
> java.lang.ArrayIndexOutOfBoundsException: 26
>         at org.drools.util.TupleIndexHashTable.toArray(TupleIndexHashTable.java:178)
>         at org.drools.reteoo.CollectNode.assertObject(CollectNode.java:212)
>         at org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:317)
>         at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:183)
>         at org.drools.reteoo.Rete.assertObject(Rete.java:121)
>         at org.drools.reteoo.ReteooRuleBase.assertObject(ReteooRuleBase.java:201)
>         at org.drools.reteoo.ReteooWorkingMemory.doAssertObject(ReteooWorkingMemory.java:70)
>         at org.drools.common.AbstractWorkingMemory.assertObject(AbstractWorkingMemory.java:766)
>         at org.drools.common.AbstractWorkingMemory.assertObject(AbstractWorkingMemory.java:578)
>         at net.juniper.dash.data.DataSource.reconcileAssertedRecords(DataSource.java:250)
>         at net.juniper.dash.data.DataSource.populateRecords(DataSource.java:193)
>         at net.juniper.dash.Updater$DataSourceProcessor.work(Updater.java:177)
>         at net.juniper.dash.Refresher.run(Refresher.java:69)
> I added some println() statements, and it's not an off-by-one error, it's something more serious.  I changed the allocated size of the array to (this.size * 10), and it *still* tried to overfill the array.  The hashtable had 26 entries, but it tried to add 261, and counting.

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