[ https://issues.jboss.org/browse/DROOLS-182?page=com.atlassian.jira.plugin... ] RH Bugzilla Integration commented on DROOLS-182: ------------------------------------------------ Mario Fusco <mfusco(a)redhat.com&gt; made a comment on [bug 995198|https://bugzilla.redhat.com/show_bug.cgi?id=995198] String drl = "package org.drools.test; \n" + "import org.drools.Person; \n " + "global java.util.List list; \n" + "\n" + "\n" + "rule TimeConsumingRule\n" + "when \n" + " $p : Person( $n : name ) \n" + "then \n" + " System.out.println( Thread.currentThread().getName() + \"Ill continue later \" ); \n" + " Thread.sleep( 1000 ); \n" + " System.out.println( Thread.currentThread().getName() + \"Hello >> \" + $n );\n" + "end\n" + "\n" + "rule PreemptingRule\n" + "timer( expr:0 )\n" + "when\n" + " $p : Person()\n" + "then\n" + " System.out.println( Thread.currentThread().getName() + \"Take out \" + $p ); \n" + " retract( $p );\n" + "end\n" + "\n" ; This particular test case throws a NPE when the accessor $n tries to read the - retracted - Person's name. The exception is not thrown when the time is > 0 -- 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