2:55 p.m.
NPE on asserting facts before reading rules with retract
--------------------------------------------------------
Key: JBRULES-612
URL: http://jira.jboss.com/jira/browse/JBRULES-612
Project: JBoss Rules
Issue Type: Bug
Security Level: Public (Everyone can see)
Affects Versions: 3.0.5
Environment: Windows XP, JDK 1.5.0_07
Reporter: Justine Hlista
Assigned To: Mark Proctor
I have a scenario that asserts two simple facts, then reads a rule file, then fires the
rules. One of the rules retracts one of the facts, then modifies another object. An NPE
results when things are run as in the attached files.
However, if the rule file is read first, then the facts are asserted, there is no NPE.
Alternatively, if the second rule, the consequence of which retracts one of the facts, is
modified so that the retract is the last statement in the consequence, then the NPE does
not occur, even if the facts are asserted before the rules are read.
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3:05 p.m.
New subject: [JBoss JIRA] Updated: (JBRULES-612) NPE on asserting facts before reading rules with retract
[ http://jira.jboss.com/jira/browse/JBRULES-612?page=all ]
Justine Hlista updated JBRULES-612:
-----------------------------------
Attachment: test.tar.gz
The tar contains the following files to reproduce the NPE:
testCase.java -- the main driver source that asserts 2 facts, reads a rule file, then
fires the rules
factA.java -- simple fact asserted in main driver
factB.java -- another simple fact asserted in main driver
factC.java -- simple fact asserted within rule in testCase.drl
testCase.drl -- 2 simple rules: the first is triggered by factA and asserts factC, the
second is triggered by factB, factA, and factC and retracts factB and modifies factC
NPE.txt -- the stack trace for the resulting null pointer
NPE on asserting facts before reading rules with retract
--------------------------------------------------------
Key: JBRULES-612
URL: http://jira.jboss.com/jira/browse/JBRULES-612
Project: JBoss Rules
Issue Type: Bug
Security Level: Public(Everyone can see)
Affects Versions: 3.0.5
Environment: Windows XP, JDK 1.5.0_07
Reporter: Justine Hlista
Assigned To: Mark Proctor
Attachments: test.tar.gz
I have a scenario that asserts two simple facts, then reads a rule file, then fires the
rules. One of the rules retracts one of the facts, then modifies another object. An NPE
results when things are run as in the attached files.
However, if the rule file is read first, then the facts are asserted, there is no NPE.
Alternatively, if the second rule, the consequence of which retracts one of the facts, is
modified so that the retract is the last statement in the consequence, then the NPE does
not occur, even if the facts are asserted before the rules are read.
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5:10 p.m.
New subject: [JBoss JIRA] Assigned: (JBRULES-612) NPE on asserting facts before reading rules with retract
[ http://jira.jboss.com/jira/browse/JBRULES-612?page=all ]
Edson Tirelli reassigned JBRULES-612:
-------------------------------------
Assignee: Edson Tirelli (was: Mark Proctor)
NPE on asserting facts before reading rules with retract
--------------------------------------------------------
Key: JBRULES-612
URL: http://jira.jboss.com/jira/browse/JBRULES-612
Project: JBoss Rules
Issue Type: Bug
Security Level: Public(Everyone can see)
Affects Versions: 3.0.5
Environment: Windows XP, JDK 1.5.0_07
Reporter: Justine Hlista
Assigned To: Edson Tirelli
Attachments: test.tar.gz
I have a scenario that asserts two simple facts, then reads a rule file, then fires the
rules. One of the rules retracts one of the facts, then modifies another object. An NPE
results when things are run as in the attached files.
However, if the rule file is read first, then the facts are asserted, there is no NPE.
Alternatively, if the second rule, the consequence of which retracts one of the facts, is
modified so that the retract is the last statement in the consequence, then the NPE does
not occur, even if the facts are asserted before the rules are read.
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5:46 p.m.
New subject: [JBoss JIRA] Updated: (JBRULES-612) NPE on asserting facts before reading rules with retract
[ http://jira.jboss.com/jira/browse/JBRULES-612?page=all ]
Edson Tirelli updated JBRULES-612:
----------------------------------
Fix Version/s: 3.0.6
NPE on asserting facts before reading rules with retract
--------------------------------------------------------
Key: JBRULES-612
URL: http://jira.jboss.com/jira/browse/JBRULES-612
Project: JBoss Rules
Issue Type: Bug
Security Level: Public(Everyone can see)
Affects Versions: 3.0.5
Environment: Windows XP, JDK 1.5.0_07
Reporter: Justine Hlista
Assigned To: Edson Tirelli
Fix For: 3.0.6
Attachments: test.tar.gz
I have a scenario that asserts two simple facts, then reads a rule file, then fires the
rules. One of the rules retracts one of the facts, then modifies another object. An NPE
results when things are run as in the attached files.
However, if the rule file is read first, then the facts are asserted, there is no NPE.
Alternatively, if the second rule, the consequence of which retracts one of the facts, is
modified so that the retract is the last statement in the consequence, then the NPE does
not occur, even if the facts are asserted before the rules are read.
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5:39 p.m.
New subject: [JBoss JIRA] Commented: (JBRULES-612) NPE on asserting facts before reading rules with retract
[ http://jira.jboss.com/jira/browse/JBRULES-612?page=comments#action_12351488 ]
Michael Neale commented on JBRULES-612:
---------------------------------------
ouch thats nasty.
Thankfully should not appear in 3.2. Good luck edson !
NPE on asserting facts before reading rules with retract
--------------------------------------------------------
Key: JBRULES-612
URL: http://jira.jboss.com/jira/browse/JBRULES-612
Project: JBoss Rules
Issue Type: Bug
Security Level: Public(Everyone can see)
Affects Versions: 3.0.5
Environment: Windows XP, JDK 1.5.0_07
Reporter: Justine Hlista
Assigned To: Edson Tirelli
Fix For: 3.0.6
Attachments: test.tar.gz
I have a scenario that asserts two simple facts, then reads a rule file, then fires the
rules. One of the rules retracts one of the facts, then modifies another object. An NPE
results when things are run as in the attached files.
However, if the rule file is read first, then the facts are asserted, there is no NPE.
Alternatively, if the second rule, the consequence of which retracts one of the facts, is
modified so that the retract is the last statement in the consequence, then the NPE does
not occur, even if the facts are asserted before the rules are read.
--
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6:20 p.m.
New subject: [JBoss JIRA] Resolved: (JBRULES-612) NPE on asserting facts before reading rules with retract
[ http://jira.jboss.com/jira/browse/JBRULES-612?page=all ]
Edson Tirelli resolved JBRULES-612.
-----------------------------------
Fix Version/s: 3.1-m1
Resolution: Done
Problem fixed in both trunk and 3.0.x branch, as detailed bellow.
Thank you for reporting and providing test cases. This was a great find as it showed up
only on a very specific scenario.
Let me know if you have any other problem.
$ svn log -r 8999 -v ../jbrules-3.0.x/
------------------------------------------------------------------------
r8999 | tirelli | 2007-01-23 20:58:46 -0300 (Tue, 23 Jan 2007) | 8 lines
Changed paths:
A /labs/jbossrules/branches/3.0.x/drools-compiler/src/test/java/org/drools/FactA.java
A /labs/jbossrules/branches/3.0.x/drools-compiler/src/test/java/org/drools/FactB.java
A /labs/jbossrules/branches/3.0.x/drools-compiler/src/test/java/org/drools/FactC.java
M
/labs/jbossrules/branches/3.0.x/drools-compiler/src/test/java/org/drools/integrationtests/IntegrationCases.java
A
/labs/jbossrules/branches/3.0.x/drools-compiler/src/test/resources/org/drools/integrationtests/test_DynamicRules.drl
A
/labs/jbossrules/branches/3.0.x/drools-compiler/src/test/resources/org/drools/integrationtests/test_DynamicRules2.drl
M
/labs/jbossrules/branches/3.0.x/drools-core/src/main/java/org/drools/reteoo/Rete.java
M
/labs/jbossrules/branches/3.0.x/drools-core/src/main/java/org/drools/reteoo/ReteooBuilder.java
JBRULES-612:
* Fixed problem with identity removal constraint
* Reseting object type cache when a new node type is added to the network
* Fixing problem when updating more than one working memories attached to the same
rulebase
* Integration tests added
==================================================
$ svn log -r 9000 -v
------------------------------------------------------------------------
r9000 | tirelli | 2007-01-23 21:16:10 -0300 (Tue, 23 Jan 2007) | 8 lines
Changed paths:
A /labs/jbossrules/trunk/drools-compiler/src/test/java/org/drools/FactA.java (from
/labs/jbossrules/branches/3.0.x/drools-compiler/src/test/java/org/drools/FactA.java:8999)
A /labs/jbossrules/trunk/drools-compiler/src/test/java/org/drools/FactB.java (from
/labs/jbossrules/branches/3.0.x/drools-compiler/src/test/java/org/drools/FactB.java:8999)
A /labs/jbossrules/trunk/drools-compiler/src/test/java/org/drools/FactC.java (from
/labs/jbossrules/branches/3.0.x/drools-compiler/src/test/java/org/drools/FactC.java:8999)
M
/labs/jbossrules/trunk/drools-compiler/src/test/java/org/drools/integrationtests/IntegrationCases.java
A
/labs/jbossrules/trunk/drools-compiler/src/test/resources/org/drools/integrationtests/test_DynamicRules.drl
(from
/labs/jbossrules/branches/3.0.x/drools-compiler/src/test/resources/org/drools/integrationtests/test_DynamicRules.drl:8999)
A
/labs/jbossrules/trunk/drools-compiler/src/test/resources/org/drools/integrationtests/test_DynamicRules2.drl
(from
/labs/jbossrules/branches/3.0.x/drools-compiler/src/test/resources/org/drools/integrationtests/test_DynamicRules2.drl:8999)
M /labs/jbossrules/trunk/drools-core/src/main/java/org/drools/reteoo/Rete.java
M
/labs/jbossrules/trunk/drools-core/src/main/java/org/drools/reteoo/ReteooBuilder.java
M
/labs/jbossrules/trunk/drools-core/src/main/java/org/drools/reteoo/builder/ColumnBuilder.java
JBRULES-612:
* Fixed problem with identity removal constraint
* Reseting object type cache when a new node type is added to the network
* Fixing problem when updating more than one working memories attached to the same
rulebase
* Integration tests added
NPE on asserting facts before reading rules with retract
--------------------------------------------------------
Key: JBRULES-612
URL: http://jira.jboss.com/jira/browse/JBRULES-612
Project: JBoss Rules
Issue Type: Bug
Security Level: Public(Everyone can see)
Affects Versions: 3.0.5
Environment: Windows XP, JDK 1.5.0_07
Reporter: Justine Hlista
Assigned To: Edson Tirelli
Fix For: 3.0.6, 3.1-m1
Attachments: test.tar.gz
I have a scenario that asserts two simple facts, then reads a rule file, then fires the
rules. One of the rules retracts one of the facts, then modifies another object. An NPE
results when things are run as in the attached files.
However, if the rule file is read first, then the facts are asserted, there is no NPE.
Alternatively, if the second rule, the consequence of which retracts one of the facts, is
modified so that the retract is the last statement in the consequence, then the NPE does
not occur, even if the facts are asserted before the rules are read.
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7050
days inactive
7056
days old
5 comments
3 participants
participants (3)
-
Edson Tirelli (JIRA) -
Justine Hlista (JIRA)
-
Michael Neale (JIRA)