[JBoss JIRA] Created: (JBRULES-1264) NPE at BaseObjectClassFieldExtractor.getLongValue with null fields
5 a.m.
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
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()
$a:Attribute(value == 3)
then
System.err.println("case 3");
end
--
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10:27 a.m.
New subject: [JBoss JIRA] Commented: (JBRULES-1264) NPE at BaseObjectClassFieldExtractor.getLongValue with null fields
[ http://jira.jboss.com/jira/browse/JBRULES-1264?page=comments#action_12381448 ]
Mark Proctor commented on JBRULES-1264:
---------------------------------------
ok I've confirmed this and its a valid bug :(
The isNull checks that where placed in a while ago are on the evaluators, but not on the
indexing code - this code is only breaks with the index stuff.
NPE at BaseObjectClassFieldExtractor.getLongValue with null fields
------------------------------------------------------------------
Key: JBRULES-1264
URL: http://jira.jboss.com/jira/browse/JBRULES-1264
Project: JBoss Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Affects Versions: 4.0.2
Reporter: Alexandre Gattiker
Assigned To: Mark Proctor
Removing one of the three rules magically solves the problem.
java.lang.NullPointerException
at
org.drools.base.extractors.BaseObjectClassFieldExtractor.getLongValue(BaseObjectClassFieldExtractor.java:106)
at org.drools.base.ClassFieldExtractor.getLongValue(ClassFieldExtractor.java:203)
at
org.drools.reteoo.CompositeObjectSinkAdapter$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()
$a:Attribute(value == 3)
then
System.err.println("case 3");
end
--
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11:55 a.m.
New subject: [JBoss JIRA] Commented: (JBRULES-1264) NPE at BaseObjectClassFieldExtractor.getLongValue with null fields
[ http://jira.jboss.com/jira/browse/JBRULES-1264?page=comments#action_12381479 ]
Mark Proctor commented on JBRULES-1264:
---------------------------------------
To summarise this is a bug on CompositeObjectSink - which is only used when you have 3+ ==
constraints on the same field, the 3 value can be overriden by the threshold configuration
value. The indexing for CompositeObjectSink is not able to handle null values. The work
around for this at the moment is to set alphaNodeHashingThreshold to 0.
NPE at BaseObjectClassFieldExtractor.getLongValue with null fields
------------------------------------------------------------------
Key: JBRULES-1264
URL: http://jira.jboss.com/jira/browse/JBRULES-1264
Project: JBoss Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Affects Versions: 4.0.2
Reporter: Alexandre Gattiker
Assigned To: Mark Proctor
Removing one of the three rules magically solves the problem.
java.lang.NullPointerException
at
org.drools.base.extractors.BaseObjectClassFieldExtractor.getLongValue(BaseObjectClassFieldExtractor.java:106)
at org.drools.base.ClassFieldExtractor.getLongValue(ClassFieldExtractor.java:203)
at
org.drools.reteoo.CompositeObjectSinkAdapter$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()
$a:Attribute(value == 3)
then
System.err.println("case 3");
end
--
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11:57 a.m.
New subject: [JBoss JIRA] Updated: (JBRULES-1264) NPE at BaseObjectClassFieldExtractor.getLongValue with null fields
[ http://jira.jboss.com/jira/browse/JBRULES-1264?page=all ]
Mark Proctor updated JBRULES-1264:
----------------------------------
Workaround Description:
Set alphaNodeHashingThreshold to 0.
NPE at BaseObjectClassFieldExtractor.getLongValue with null fields
------------------------------------------------------------------
Key: JBRULES-1264
URL: http://jira.jboss.com/jira/browse/JBRULES-1264
Project: JBoss Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Affects Versions: 4.0.2
Reporter: Alexandre Gattiker
Assigned To: Mark Proctor
Removing one of the three rules magically solves the problem.
java.lang.NullPointerException
at
org.drools.base.extractors.BaseObjectClassFieldExtractor.getLongValue(BaseObjectClassFieldExtractor.java:106)
at org.drools.base.ClassFieldExtractor.getLongValue(ClassFieldExtractor.java:203)
at
org.drools.reteoo.CompositeObjectSinkAdapter$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()
$a:Attribute(value == 3)
then
System.err.println("case 3");
end
--
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12:01 p.m.
New subject: [JBoss JIRA] Updated: (JBRULES-1264) NPE at BaseObjectClassFieldExtractor.getLongValue with null fields
[ http://jira.jboss.com/jira/browse/JBRULES-1264?page=all ]
Mark Proctor updated JBRULES-1264:
----------------------------------
Workaround Description:
Set alphaNodeHashingThreshold to really large number like 99999.
was:
Set alphaNodeHashingThreshold to 0.
NPE at BaseObjectClassFieldExtractor.getLongValue with null fields
------------------------------------------------------------------
Key: JBRULES-1264
URL: http://jira.jboss.com/jira/browse/JBRULES-1264
Project: JBoss Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Affects Versions: 4.0.2
Reporter: Alexandre Gattiker
Assigned To: Mark Proctor
Removing one of the three rules magically solves the problem.
java.lang.NullPointerException
at
org.drools.base.extractors.BaseObjectClassFieldExtractor.getLongValue(BaseObjectClassFieldExtractor.java:106)
at org.drools.base.ClassFieldExtractor.getLongValue(ClassFieldExtractor.java:203)
at
org.drools.reteoo.CompositeObjectSinkAdapter$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()
$a:Attribute(value == 3)
then
System.err.println("case 3");
end
--
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12:05 p.m.
New subject: [JBoss JIRA] Commented: (JBRULES-1264) NPE at BaseObjectClassFieldExtractor.getLongValue with null fields
[ http://jira.jboss.com/jira/browse/JBRULES-1264?page=comments#action_12381484 ]
Mark Proctor commented on JBRULES-1264:
---------------------------------------
sorry 0 does not disable, so you have to set the threashold to a value greater than ever
will be met, like 99999.
NPE at BaseObjectClassFieldExtractor.getLongValue with null fields
------------------------------------------------------------------
Key: JBRULES-1264
URL: http://jira.jboss.com/jira/browse/JBRULES-1264
Project: JBoss Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Affects Versions: 4.0.2
Reporter: Alexandre Gattiker
Assigned To: Mark Proctor
Removing one of the three rules magically solves the problem.
java.lang.NullPointerException
at
org.drools.base.extractors.BaseObjectClassFieldExtractor.getLongValue(BaseObjectClassFieldExtractor.java:106)
at org.drools.base.ClassFieldExtractor.getLongValue(ClassFieldExtractor.java:203)
at
org.drools.reteoo.CompositeObjectSinkAdapter$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()
$a:Attribute(value == 3)
then
System.err.println("case 3");
end
--
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3:45 p.m.
New subject: [JBoss JIRA] Updated: (JBRULES-1264) NPE at BaseObjectClassFieldExtractor.getLongValue with null fields
[ http://jira.jboss.com/jira/browse/JBRULES-1264?page=all ]
Mark Proctor updated JBRULES-1264:
----------------------------------
Attachment: JBRULES-1264.patch
this patch is applied to trunk and needs to be applied to 4.0.x and 4.1.x
NPE at BaseObjectClassFieldExtractor.getLongValue with null fields
------------------------------------------------------------------
Key: JBRULES-1264
URL: http://jira.jboss.com/jira/browse/JBRULES-1264
Project: JBoss Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Affects Versions: 4.0.2
Reporter: Alexandre Gattiker
Assigned To: Mark Proctor
Attachments: JBRULES-1264.patch
Removing one of the three rules magically solves the problem.
java.lang.NullPointerException
at
org.drools.base.extractors.BaseObjectClassFieldExtractor.getLongValue(BaseObjectClassFieldExtractor.java:106)
at org.drools.base.ClassFieldExtractor.getLongValue(ClassFieldExtractor.java:203)
at
org.drools.reteoo.CompositeObjectSinkAdapter$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()
$a:Attribute(value == 3)
then
System.err.println("case 3");
end
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7:35 a.m.
New subject: [JBoss JIRA] Closed: (JBRULES-1264) NPE at BaseObjectClassFieldExtractor.getLongValue with null fields
[ http://jira.jboss.com/jira/browse/JBRULES-1264?page=all ]
Mark Proctor closed JBRULES-1264.
---------------------------------
Resolution: Done
NPE at BaseObjectClassFieldExtractor.getLongValue with null fields
------------------------------------------------------------------
Key: JBRULES-1264
URL: http://jira.jboss.com/jira/browse/JBRULES-1264
Project: JBoss Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Affects Versions: 4.0.2
Reporter: Alexandre Gattiker
Assigned To: Mark Proctor
Fix For: 4.0.2_SOA_4.2, 4.0.3, 4.1.0
Attachments: JBRULES-1264.patch
Removing one of the three rules magically solves the problem.
java.lang.NullPointerException
at
org.drools.base.extractors.BaseObjectClassFieldExtractor.getLongValue(BaseObjectClassFieldExtractor.java:106)
at org.drools.base.ClassFieldExtractor.getLongValue(ClassFieldExtractor.java:203)
at
org.drools.reteoo.CompositeObjectSinkAdapter$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()
$a:Attribute(value == 3)
then
System.err.println("case 3");
end
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7:35 a.m.
New subject: [JBoss JIRA] Updated: (JBRULES-1264) NPE at BaseObjectClassFieldExtractor.getLongValue with null fields
[ http://jira.jboss.com/jira/browse/JBRULES-1264?page=all ]
Mark Proctor updated JBRULES-1264:
----------------------------------
Fix Version/s: 4.0.2_SOA_4.2
4.0.3
4.1.0
NPE at BaseObjectClassFieldExtractor.getLongValue with null fields
------------------------------------------------------------------
Key: JBRULES-1264
URL: http://jira.jboss.com/jira/browse/JBRULES-1264
Project: JBoss Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Affects Versions: 4.0.2
Reporter: Alexandre Gattiker
Assigned To: Mark Proctor
Fix For: 4.0.3, 4.1.0, 4.0.2_SOA_4.2
Attachments: JBRULES-1264.patch
Removing one of the three rules magically solves the problem.
java.lang.NullPointerException
at
org.drools.base.extractors.BaseObjectClassFieldExtractor.getLongValue(BaseObjectClassFieldExtractor.java:106)
at org.drools.base.ClassFieldExtractor.getLongValue(ClassFieldExtractor.java:203)
at
org.drools.reteoo.CompositeObjectSinkAdapter$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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6236
days inactive
6240
days old
8 comments
2 participants
participants (2)
-
Alexandre Gattiker (JIRA) -
Mark Proctor (JIRA)