Davide Sottara created DROOLS-106: ------------------------------------- Summary: Using the same pattern in and out of a sliding windows causes an NPE if a join is involved Key: DROOLS-106 URL: https://issues.jboss.org/browse/DROOLS-106 Project: Drools Issue Type: Bug Security Level: Public (Everyone can see) Affects Versions: 6.0.0.Beta1, 5.5.0.Final Reporter: Davide Sottara Assignee: Edson Tirelli In cases like the following: $primary : StockTick( $name : company ) over window:length(4) accumulate ( $tick : StockTick( company == $name ) count( $tick ) ) A NPE is raised: java.lang.NullPointerException at org.drools.core.util.index.RightTupleIndexHashTable.remove(RightTupleIndexHashTable.java:363) at org.drools.reteoo.AccumulateNode.retractRightTuple(AccumulateNode.java:318) at org.drools.rule.SlidingLengthWindow.assertFact(SlidingLengthWindow.java:116) -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira