[jboss-jira] [JBoss JIRA] Updated: (JBRULES-1264) NPE at BaseObjectClassFieldExtractor.getLongValue with null fields
Mark Proctor (JIRA)
jira-events at lists.jboss.org
Sun Oct 14 08:35:03 EDT 2007
[ http://jira.jboss.com/jira/browse/JBRULES-1264?page=all ]
Mark Proctor updated JBRULES-1264:
----------------------------------
Fix Version/s: 4.0.2_SOA_4.2
4.0.3
4.1.0
> NPE at BaseObjectClassFieldExtractor.getLongValue with null fields
> ------------------------------------------------------------------
>
> Key: JBRULES-1264
> URL: http://jira.jboss.com/jira/browse/JBRULES-1264
> Project: JBoss Drools
> Issue Type: Bug
> Security Level: Public(Everyone can see)
> Affects Versions: 4.0.2
> Reporter: Alexandre Gattiker
> Assigned To: Mark Proctor
> Fix For: 4.0.3, 4.1.0, 4.0.2_SOA_4.2
>
> Attachments: JBRULES-1264.patch
>
>
> Removing one of the three rules magically solves the problem.
> java.lang.NullPointerException
> at org.drools.base.extractors.BaseObjectClassFieldExtractor.getLongValue(BaseObjectClassFieldExtractor.java:106)
> at org.drools.base.ClassFieldExtractor.getLongValue(ClassFieldExtractor.java:203)
> at org.drools.reteoo.CompositeObjectSinkAdapter$HashKey.setValue(CompositeObjectSinkAdapter.java:467)
> at org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:292)
> at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:153)
> at org.drools.reteoo.Rete.assertObject(Rete.java:177)
> at org.drools.reteoo.ReteooRuleBase.assertObject(ReteooRuleBase.java:201)
> at org.drools.reteoo.ReteooWorkingMemory.doInsert(ReteooWorkingMemory.java:71)
> at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:886)
> at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:858)
> at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:659)
> at com.sample.DroolsTest.main(DroolsTest.java:21)
> package com.sample;
> import java.io.InputStreamReader;
> import java.io.Reader;
> import org.drools.RuleBase;
> import org.drools.RuleBaseFactory;
> import org.drools.WorkingMemory;
> import org.drools.compiler.PackageBuilder;
> import org.drools.rule.Package;
> public class DroolsTest
> {
> public static final void main(String[] args)
> {
> try
> {
> RuleBase ruleBase = readRule();
> WorkingMemory workingMemory = ruleBase.newStatefulSession();
> workingMemory.insert(new Attribute());
> workingMemory.insert(new Message());
> workingMemory.fireAllRules();
> }
> catch (Throwable t)
> {
> t.printStackTrace();
> }
> }
> private static RuleBase readRule() throws Exception
> {
> Reader source = new InputStreamReader(DroolsTest.class.getResourceAsStream("/Sample.drl"));
> PackageBuilder builder = new PackageBuilder();
> builder.addPackageFromDrl(source);
> Package pkg = builder.getPackage();
> RuleBase ruleBase = RuleBaseFactory.newRuleBase();
> ruleBase.addPackage(pkg);
> return ruleBase;
> }
> public static class Message
> {
> //empty
> }
> public static class Attribute
> {
> public Integer getValue()
> {
> return null;
> }
> }
> }
> package com.sample
>
> import com.sample.DroolsTest.Message;
> import com.sample.DroolsTest.Attribute;
>
> rule "rule_1"
>
> when
> Message()
> Attribute(value == 1)
> then
> System.err.println("case 1");
> end
> rule "rule_2"
>
> when
> Message()
> Attribute(value == 2)
> then
> System.err.println("case 2");
> end
> rule "rule_3"
>
> when
> Message()
> $a:Attribute(value == 3)
> then
> System.err.println("case 3");
> end
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