June 2012 - rules-users - Jboss List Archives

by paco

I am using Drools 5.4.0, guvnor 5.3.0 and default database. I imported the rules with XML file (550 KB) in Guvnor. After I can check, validate and test (with run analysis button) the rules without problems. Everything works fine. After when I import ed other rules XML file (30,000 KB), I realized that the system becomes too slow and obviously I can no longer veifier, validate or test my rules. I get errors like the following: Please suggest King regards -- View this message in context: http://drools.46999.n3.nabble.com/System-problems-tp4018361.html Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 10 months

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ResourceCompilationFailedEvent - when does it happen, and why?

by Gustaf Cele

I'm trying to understand what KnowledgeAgentEventListener. resourceCompilationFailed signifies, and when it occurs. The javadocs don't say anything, and it's not entirely obvious from looking at the code what causes it. Suppose I have KnowledgeAgent with newInstance=true and initialized with a changeset which links to a Guvnor instance like this: <change-set > <add> <resource type="PKG" source="http://guvnor-host/drools-guvnor/org.drools.guvnor.Guvnor/package/com.exa..." /> </add> </change-set> Just throwing syntax errors into the rules in Guvnor obviously doesn't work, since I can't even build the binary package then. Is there any way to provoke this event with the above setup, so I can see how it affects my application? I'm using Drools 5.4.0.Final.

11 years, 10 months

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Guvnor jackrabbit session issue?

by drdaveg

I am moving some working Eclipse-developed code to Guvnor and am seeing a huge number of messages logged for jackrabbit "session that has already been closed". This happens nearly continuously, with the session number ascending: 11:18:01,889 WARN [org.apache.jackrabbit.core.session.SessionState] (Finalizer) Attempt to close session-guest-45 after it has alre ady been closed. Please review your code for proper session management.: java.lang.Exception: Stack trace of the duplicate attempt t o close session-guest-45 Trying to debug the working code moved from my local system Guvnor that say to check the log. These session messages consume thousands of lines of warnings (at dozens per button press) that finding any "real" error messages seems impossible (even with automated searches). This issue has been posted on other forums but I don't see anything here. Is there a work around this issue - hopefully correcting the session persistence, as opposed to changing the logging level? I am guessing leaving Guvnor ungracefully causes an endless stream of these (forever). Thanks! -- View this message in context: http://drools.46999.n3.nabble.com/Guvnor-jackrabbit-session-issue-tp38680... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 10 months

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debug drools in Spring environment

by al so

Environment: Eclipse Indigo, Drools Core,Guvnor,Task 5.2.1.Final, Spring MVC 3.x How would one do Debug As Drools Application in this scenario to hit a break point in the drl file? You get a a big list of Crap from Eclipse where my drools app is not even listed although I performed the Drools app conversion. Eclipse looks for Main method but this is a Spring MVC app.

11 years, 10 months

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NullPointerException when deploying drools-core-5.4.0.Final (OSGi)

by Nicholas Hemley

Hello, I have the following error deploying drools-core-5.4.0.Final to ServiceMix 4.4.x The error is as follows: java.lang.NullPointerException at org.apache.felix.framework.resolver.ResolverImpl.toStringBlame(ResolverImpl.java:1521)[org.apache.felix.framework-3.0.9-fuse-07-03.jar:] at org.apache.felix.framework.resolver.ResolverImpl.checkPackageSpaceConsistency(ResolverImpl.java:860)[org.apache.felix.framework-3.0.9-fuse-07-03.jar:] at org.apache.felix.framework.resolver.ResolverImpl.resolve(ResolverImpl.java:130)[org.apache.felix.framework-3.0.9-fuse-07-03.jar:] at org.apache.felix.framework.Felix$StatefulResolver.resolve(Felix.java:4129)[org.apache.felix.framework-3.0.9-fuse-07-03.jar:] at org.apache.felix.framework.Felix.resolveBundle(Felix.java:3459)[org.apache.felix.framework-3.0.9-fuse-07-03.jar:] at org.apache.felix.framework.Felix.startBundle(Felix.java:1739)[org.apache.felix.framework-3.0.9-fuse-07-03.jar:] at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:927)[org.apache.felix.framework-3.0.9-fuse-07-03.jar:] at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:914)[org.apache.felix.framework-3.0.9-fuse-07-03.jar:] at org.apache.karaf.shell.osgi.InstallBundle.doExecute(InstallBundle.java:54)[24:org.apache.karaf.shell.osgi:2.2.2.fuse-06-03] at org.apache.karaf.shell.console.OsgiCommandSupport.execute(OsgiCommandSupport.java:38)[26:org.apache.karaf.shell.console:2.2.2.fuse-06-03] at org.apache.felix.gogo.commands.basic.AbstractCommand.execute(AbstractCommand.java:35)[26:org.apache.karaf.shell.console:2.2.2.fuse-06-03] at org.apache.felix.gogo.runtime.CommandProxy.execute(CommandProxy.java:78)[26:org.apache.karaf.shell.console:2.2.2.fuse-06-03] at org.apache.felix.gogo.runtime.Closure.executeCmd(Closure.java:474)[26:org.apache.karaf.shell.console:2.2.2.fuse-06-03] at org.apache.felix.gogo.runtime.Closure.executeStatement(Closure.java:400)[26:org.apache.karaf.shell.console:2.2.2.fuse-06-03] at org.apache.felix.gogo.runtime.Pipe.run(Pipe.java:108)[26:org.apache.karaf.shell.console:2.2.2.fuse-06-03] at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:183)[26:org.apache.karaf.shell.console:2.2.2.fuse-06-03] at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:120)[26:org.apache.karaf.shell.console:2.2.2.fuse-06-03] at org.apache.felix.gogo.runtime.CommandSessionImpl.execute(CommandSessionImpl.java:89)[26:org.apache.karaf.shell.console:2.2.2.fuse-06-03] at org.apache.karaf.shell.console.jline.Console.run(Console.java:240)[26:org.apache.karaf.shell.console:2.2.2.fuse-06-03] All the necessary bundle dependencies are installed ok. How do I fix this please? Cheerio, Nic

11 years, 10 months

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Drools-Camel Server > Commands in separate jar?

by Nicholas Hemley

Hello, I have made a Drools Client that connects to the Drools-Camel Server using XML generated from the Command objects. However, when I deploy my client (to ServiceMix) it has a dependency on drools-core (since the Commands are in this project), thus I have to include quite a few unnecessary transitive dependencies. Would it be an idea for the Commands to be split into a separate 'drools-common' project (with jar artifact) to avoid this? I suppose one option for me is to export them from drools-core and construct this jar myself... Cheerio, Nic

11 years, 10 months

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Drools verifier

by paco

Someone knows how is it possible to add news functionalities on Drools-verifier? What can I do to know if it's possible to add some functnalities? In what way can I do? Thanks -- View this message in context: http://drools.46999.n3.nabble.com/Drools-verifier-tp4018296.html Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 10 months

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Import into specific package GUVNOR help !

by abhinay_agarwal

hello, m using GUVNOR v5.3.0 i upload a POJO JAR in global area and created a rule using it in the global area.. now, when i imported the same jar into a package and tried making rules using it, it shows me the following error.. Note: No model has been defined. Tip: You will want to import or define a model for this user interface to work ! M, i doing something wrong, can yu plz help me out !! Thanks, Abhinay -- View this message in context: http://drools.46999.n3.nabble.com/Import-into-specific-package-GUVNOR-hel... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 10 months

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Does Drools Fusion consume a lot of memory?

by chrisLi

Hi, Edson and all I am making an experiment on Drools Fusion these days. I found it consumes a lot of memory. And the number of rules, the fields of events, the complexity of rules affect the memory usage. The flow of my experiment is as follow: 1. I have two tables, one for Transaction, one for account. The transaction table have a foreign key number which is the primary key of account table. 2. In one thread, I loaded transaction data and account data into a ArrayBlockingQueue, whose size is 100000. 3. In another thread, I inserted the Transaction as events and the related account as facts into the Fusion Engine. 4. I used a java profiler tool to monitor the memory usage of the Fusion engine, and recorded the highest heap memory usage of ecah round of my experiment. Here is the results: Amount of events highest heap memory usage(MB) 5000 268 10000 470 15000 555 20000 645 25000 845 30000 958 35000 1011 40000 1127 45000 1331 Is this the normal memory usage of Drools Fusion? Otherwise, did I make a mistake? See the attachments for the rules and Java Model classes . If you are intrested in this experiment, I can upload all codes. Thank you very much. I will appreciate for your response. http://drools.46999.n3.nabble.com/file/n4018307/Cep1.drl Cep1.drl http://drools.46999.n3.nabble.com/file/n4018307/TransactionEvent.java TransactionEvent.java http://drools.46999.n3.nabble.com/file/n4018307/Account.java Account.java -- View this message in context: http://drools.46999.n3.nabble.com/Does-Drools-Fusion-consume-a-lot-of-mem... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 10 months

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Support for dynamic / ad-hoc queries in Drools

by jpullmann

Hello, is there any support for ad-hoc queries in Drools or are there plans to introduce this feature ? Being part of the rule base queries are executed in the manner of prepared statements. To execute dynamic query patterns I currently create, add and remove a KB package containing the query. It would be great to have a dedicated/optimized utility method in Drools, that accepts a string pattern and returns QueryResults, like WorkingMemory#getQueryResults. There were similar requests earlier [1], [2], but they were not responded with regard to dynamic queries. [1] http://drools.46999.n3.nabble.com/Creating-ad-hoc-queries-td51522.html [2] http://drools.46999.n3.nabble.com/Inspecting-Working-Memory-td52382.html Best regards Jaro -- View this message in context: http://drools.46999.n3.nabble.com/Support-for-dynamic-ad-hoc-queries-in-D... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 10 months

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rules-users June 2012