[jboss-jira] [JBoss JIRA] Closed: (JBRULES-1006) NullPointerException when using "from collect"

NullPointerException when using "from collect" ---------------------------------------------- Key: JBRULES-1006 URL: http://jira.jboss.com/jira/browse/JBRULES-1006 Project: JBoss Rules Issue Type: Bug Security Level: Public(Everyone can see) Reporter: Brian Stiles Assigned To: Edson Tirelli Fix For: 4.0.0.MR4 It seems that using more than one rule with "from collect"--or possibly "from collect ( Foo() from someCall() )--causes Declaration.getPattern().getOffset() to be incorrect, resulting in a NullPointerException in ReteTuple.get(int). This should be more clear after running the included code. The following test case demonstrates the problem. -- package sample; import java.io.StringReader; import java.util.HashSet; import java.util.Set; import org.drools.RuleBase; import org.drools.RuleBaseConfiguration; import org.drools.RuleBaseFactory; import org.drools.StatefulSession; import org.drools.compiler.PackageBuilder; import org.drools.compiler.PackageBuilderConfiguration; public class FromProblem { public static void main(String[] args) throws Exception { final PackageBuilderConfiguration packageBuilderConfiguration = new PackageBuilderConfiguration(); final PackageBuilder packageBuilder = new PackageBuilder(packageBuilderConfiguration); packageBuilder.addPackageFromDrl(new StringReader("\n" + "package sample\n" + "\n" + "import java.util.ArrayList;" + "import sample.FromProblem;" + "global sample.FromProblem x;" + "\n" + "rule MyRule\n" + " dialect \"java\"\n" + "\n" + " when\n" + " $i : ArrayList() from collect(Integer() from x.getIntegers())\n" + " $k : ArrayList() from collect(Integer() from x.getIntegers())\n" + " then \n" + " System.out.println($i);\n" + " System.out.println($k);\n" + "end \n")); final RuleBaseConfiguration ruleBaseConfiguration = new RuleBaseConfiguration(); final RuleBase ruleBase = RuleBaseFactory.newRuleBase(ruleBaseConfiguration); ruleBase.addPackage(packageBuilder.getPackage()); final StatefulSession session = ruleBase.newStatefulSession(); session.setGlobal("x", new FromProblem()); session.fireAllRules(); } public Set<Integer> getIntegers() { final HashSet<Integer> set = new HashSet<Integer>(); set.add(1); return set; } }