January 2010 - jboss-jira - Jboss List Archives

[JBoss JIRA] Created: (JBRULES-1559) Ability to negate a constraint group

by Dirk Bergstrom (JIRA)

Ability to negate a constraint group ------------------------------------ Key: JBRULES-1559 URL: http://jira.jboss.com/jira/browse/JBRULES-1559 Project: JBoss Drools Issue Type: Feature Request Security Level: Public (Everyone can see) Components: Drl Parser/Builder Affects Versions: FUTURE Reporter: Dirk Bergstrom Assigned To: Mark Proctor Priority: Minor I want to write a rule that says "Find all long-eared dogs that do not have short, black hair". This seems like the simple way to do it: collect( Dog( ears=="long", not (hair=="short" && color=="black") ) But that doesn't parse. Some digging through the archives unearthed a mention of De Morgan's laws, which leads to: http://en.wikipedia.org/wiki/De_Morgan's_laws Which explains that I can instead write: collect( Dog( ears=="long", (hair!="short" || color!="black") ) Which, after some mental effort, turns out to be the right thing. However, had I not found the reference to De Morgan's Law, it would have taken me a long time to get there (if indeed I ever would have). The end result is also quite difficult to parse if you're not a logician, and thus not very user-friendly. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

13 years, 4 months

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[JBoss JIRA] Created: (JBRULES-1662) Tomcat Debugging of Rules

by Paul Ryan (JIRA)

Tomcat Debugging of Rules ------------------------- Key: JBRULES-1662 URL: http://jira.jboss.com/jira/browse/JBRULES-1662 Project: JBoss Drools Issue Type: Feature Request Security Level: Public (Everyone can see) Components: Eclipse IDE Environment: Tomcat 5+ and Eclipse IDE Reporter: Paul Ryan Assigned To: Mark Proctor The ability to debug rules while running from a tomcat instance. This would be helpful for those of us that have services wrapping the rules so that we can debug into running rule sets. This feature should be capable of running its own instance of tomcat as well as attaching to a debug version of an externally running tomcat to allow for flexibility based on the users socket needs. This feature would be a huge selling point for enterprise applications of Drools. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

13 years, 4 months

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[JBoss JIRA] Created: (JBRULES-1671) org.drools.integrationtests.DynamicRulesTest.testDynamicFunction fails with jrockit

by Jaroslaw Kijanowski (JIRA)

org.drools.integrationtests.DynamicRulesTest.testDynamicFunction fails with jrockit ----------------------------------------------------------------------------------- Key: JBRULES-1671 URL: http://jira.jboss.com/jira/browse/JBRULES-1671 Project: JBoss Drools Issue Type: Bug Security Level: Public (Everyone can see) Affects Versions: 4.0.7 Environment: http://anonsvn.labs.jboss.com/labs/jbossrules/tags/DROOLS_SOA_4_2_19937_CP2 Reporter: Jaroslaw Kijanowski Assigned To: Mark Proctor Please see SOA-621 for details, it affects the SOA branch -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

13 years, 4 months

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[JBoss JIRA] Created: (JBRULES-1670) org.drools.agent.RuleAgentTest.testDirectory fails on windows on jrockit

by Jaroslaw Kijanowski (JIRA)

org.drools.agent.RuleAgentTest.testDirectory fails on windows on jrockit ------------------------------------------------------------------------ Key: JBRULES-1670 URL: http://jira.jboss.com/jira/browse/JBRULES-1670 Project: JBoss Drools Issue Type: Bug Security Level: Public (Everyone can see) Affects Versions: 4.0.7 Environment: http://anonsvn.labs.jboss.com/labs/jbossrules/tags/DROOLS_SOA_4_2_19937_CP2 Reporter: Jaroslaw Kijanowski Assigned To: Mark Proctor Please see SOA-620 for details, it affects the SOA branch -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

13 years, 4 months

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[JBoss JIRA] Created: (JBRULES-2113) NPE thrown by LeftTuple.get() method

by Tom Murphy (JIRA)

NPE thrown by LeftTuple.get() method ------------------------------------ Key: JBRULES-2113 URL: https://jira.jboss.org/jira/browse/JBRULES-2113 Project: JBoss Drools Issue Type: Bug Security Level: Public (Everyone can see) Affects Versions: 5.0.0.CR1 Environment: FOund in 5.0.0.CR1 - Community version. Windows XP Reporter: Tom Murphy Assignee: Mark Proctor the get() method on LeftTuple throws a null exception under certain circumstances, which are as yet undetermined. Here is the Code: public InternalFactHandle get(final int index) { LeftTuple entry = this; while ( entry.index != index ) { entry = entry.parent; } return entry.handle; } Note that the loop moves to each parent in succession, but never checks for entry != null. If it does get to the end of the chain, it will throw an NPE -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

13 years, 4 months

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[JBoss JIRA] Created: (JBRULES-2101) Intermittant NullPointerException when invoking StatefulSession.asyncUpdate() while maintainTms==true

by Greg Barton (JIRA)

Intermittant NullPointerException when invoking StatefulSession.asyncUpdate() while maintainTms==true ----------------------------------------------------------------------------------------------------- Key: JBRULES-2101 URL: https://jira.jboss.org/jira/browse/JBRULES-2101 Project: JBoss Drools Issue Type: Bug Security Level: Public (Everyone can see) Components: drools-core Affects Versions: 5.0.1.FINAL Environment: Ubuntu Jaunty Jackelope Linux version 2.6.27-11-generic (buildd@yellow) (gcc version 4.3.2 (Ubuntu 4.3.2-1ubuntu11) ) #1 SMP Wed Apr 1 20:53:41 UTC 2009 Multicore Reporter: Greg Barton Assignee: Mark Proctor After calling StatefulSession.asyncUpdate() the following exception occurs, but only when maintainTms==true in the rule configuration: Exception in thread "Thread-5" java.lang.NullPointerException at org.drools.common.AbstractWorkingMemory.update(AbstractWorkingMemory.java:1387) at org.drools.common.AbstractWorkingMemory.update(AbstractWorkingMemory.java:1350) at org.drools.concurrent.UpdateObject.execute(UpdateObject.java:46) at org.drools.concurrent.CommandExecutor.run(CommandExecutor.java:78) at java.lang.Thread.run(Thread.java:619) AbstractWorkingMemory.java line 1387 is wrapped in an if statement with condition "this.maintainTms" so setting maintainTms=false avoids the exception entirely. The NPE producing line is this: status = ((InternalFactHandle) factHandle).getEqualityKey().getStatus(); While encountering this problem the factHandle passed in to StatefulSession.asyncUpdate() was always non-null, so my guess is that the getEqualityKey() call returned null. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

13 years, 4 months

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[JBoss JIRA] Created: (JBRULES-1675) Xpath Default Constraint Evaluations

by Paul Ryan (JIRA)

Xpath Default Constraint Evaluations ------------------------------------ Key: JBRULES-1675 URL: http://jira.jboss.com/jira/browse/JBRULES-1675 Project: JBoss Drools Issue Type: Feature Request Security Level: Public (Everyone can see) Components: Drl Parser/Builder, Eclipse IDE, Rule Assemply/SPI, Solver, Verifier, xml Reporter: Paul Ryan Assigned To: Mark Proctor A default set of constraint matchers for xpath based on loaded w3c DOMs would be very helpful. For our project we have alot of facts that are just an xml file (this seems to be the way the industry in general is going) that is calculated and being able to load that in to working memory and have constraint based node evaluations would be a very nice and attractive feature. I would suggest as a start a basic content equals (on elements it would match against text content and on attributes it would match against the node value) as well as a basic check for exists based on given xpath. Potential syntax: Fact( xml.xpath("/document//fragment[@id='myid']")) // Checks if the xpath exists in the property xml or Fact( xml.xpath("/document//fragment[@id='myid']") == "myvalue") // Checks if the text content of the fragment with the given id is "myvalue" or Fact( xml.xpath("/document//fragment[@id='myid']/@attr1") == "myattr") // Checks if the node value of the attribute attr1 in the given fragment is "myattr" with the property xml having been defined in the fact. I would suggest implementing this using the latest DOM stuff that has been recently released with xerces 2.9 and up as it has a very fast and efficient xpath evaluator. If you would like I think I can draw up some examples, however I don't think I know enough about drools core code to write this feature myself yet, maybe with some help. Also this constraint module may need a new interface for configuring the size limit (or other constraint) around when to load the xml into working memory. Maybe a annotation based solution in the fact is a good idea (e.g. put an annotation @LoadDOM on xml property in the fact for properties that should be loaded into DOM), or the other option is that the designer has to set the property up as an org.w3c.dom.Document for it to be consider pre-loadable. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

13 years, 4 months

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[JBoss JIRA] Created: (JBRULES-2069) NPE on RuleBase when Guvnor is down

by George Gastaldi (JIRA)

NPE on RuleBase when Guvnor is down ----------------------------------- Key: JBRULES-2069 URL: https://jira.jboss.org/jira/browse/JBRULES-2069 Project: JBoss Drools Issue Type: Bug Security Level: Public (Everyone can see) Components: drools-core Affects Versions: 5.0.0.CR1 Reporter: George Gastaldi Assignee: Mark Proctor Priority: Minor When creating a a RuleBasedAgent with the following code: org.drools.agent.RuleAgent.newRuleAgent(properties), having properties only the url property, the following stacktrace appears: java.io.IOException: Was unable to reach server. at org.drools.agent.URLScanner.hasChanged(URLScanner.java:155) at org.drools.agent.URLScanner.getChangeSet(URLScanner.java:119) at org.drools.agent.URLScanner.loadPackageChanges(URLScanner.java:96) at org.drools.agent.RuleAgent.checkForChanges(RuleAgent.java:410) at org.drools.agent.RuleAgent.refreshRuleBase(RuleAgent.java:362) at org.drools.agent.RuleAgent.configure(RuleAgent.java:347) at org.drools.agent.RuleAgent.init(RuleAgent.java:247) at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:187) at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:147) followed by java.lang.NullPointerException at org.drools.agent.RuleAgent.refreshRuleBase(RuleAgent.java:363) at org.drools.agent.RuleAgent.configure(RuleAgent.java:347) at org.drools.agent.RuleAgent.init(RuleAgent.java:247) at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:187) at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:147) That´s OK to throw the IOException, but the NullPointerException should not happen. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

13 years, 4 months

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[JBoss JIRA] Created: (EJBTHREE-1647) @Resource injection of primitive types from JNDI

by Dennis Reed (JIRA)

@Resource injection of primitive types from JNDI ------------------------------------------------ Key: EJBTHREE-1647 URL: https://jira.jboss.org/jira/browse/EJBTHREE-1647 Project: EJB 3.0 Issue Type: Bug Components: injection Affects Versions: AS 4.2.1.GA Reporter: Dennis Reed The following does not work to inject an arbitrary JNDI entry for primitive/primitive wrapper/String fields: @Resource( mappedName = "java:/blah/blah" ) String myVar; In older versions, a "NYI" exception was thrown (then changed to a different exception before getting to the user). In newer versions, the literal value in mappedName is injected. For all other types, the JNDI entry injection works. For example, the following does inject that same String from JNDI: @Resource( mappedName = "java:/blah/blah" ) Object myVar; -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

13 years, 4 months

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[JBoss JIRA] Created: (JBRULES-2343) Context assist in DSLR Editor

by Hamza Bakkali (JIRA)

Context assist in DSLR Editor ----------------------------- Key: JBRULES-2343 URL: https://jira.jboss.org/jira/browse/JBRULES-2343 Project: Drools Issue Type: Bug Security Level: Public (Everyone can see) Affects Versions: 5.0.1.FINAL Environment: Eclipse 3.4 Ganymede Reporter: Hamza Bakkali Assignee: Mark Proctor Fix For: 4.0.8 I have been using drools 4 for couple of months now and I am starting to get the hang of it. We recently decided to move to Dools 5 with Eclipse 3.4.2 (Ganymede). We unfortunately hit a major 'show stopper' (for us). In the DSLR editor: Context Assist + space + enter removes/replaces the whole line, not only the place holder. In other words: DSL: [*][]Log : {msg}=System.out.println("{msg}"); [*][]id1="some id label" DSLR: rule "MyRule" when then end If I Press L , control space --> the line Log:{msg} appears in the context menu. Hit enter I get Log :{msg} Now, If want to replace msg by id1. I position the cursor in the {msg}, hit ctrl space, id1 shows in the list. I hit enter the whole line disappear, and I am left with id1 instead of Log : id1 Is this a setting somewhere in eclipse itself?? I doubt it. The same thing use to work as expected in Drools 4. thanks. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

13 years, 4 months

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jboss-jira January 2010