[rules-users] drools-example-brms
Fernando Meyer
fmcamargo at gmail.com
Tue Jul 31 15:38:19 EDT 2007
Shahad,
I've updated drools-example-brms in both trunk and latest GA tag, I also
updated the zip file in downloads page with latest drools and
Fernando Meyer http://fmeyer.org
fmcamargo at gmail.com
PGP: 0xD804DDFB
On 7/30/07, Shahad Ahmed <shahad.ahmed2 at gmail.com> wrote:
>
> Hi Fernando,
>
> Removing the compiled package will help, but the problem that myself and
> the other users have encountered also occurs with the RuleAgent url due to
> the incorrect version of mvel (see the first part of my earlier post in this
> thread). I suspect you will also need to update the mvel jar in the lib
> directory in http://anonsvn.labs.jboss.com/labs/jbossrules/trunk/drools-examples/drools-examples-brms/lib
> from mvel14-1.2pre5.jar to mvel14-1.2rc1.jar.
>
> My main concern is that this problem is in the official 4.0 GA download
> option "Drools 4.0.0 Examples", and consequently a lot of new users may
> have problems getting the BRMS examples to work. As the examples are often
> the first thing new users try, then it would be good to fix this and make
> the fix available on the Drools download page, as well updating the trunk.
>
> Regards
> Shahad
>
>
>
>
> On 7/30/07, Fernando Meyer <fmcamargo at gmail.com> wrote:
>
> > Hi Shahad,
> >
> > You are right, the binary in resources directory is deprecated, But as
> > you can see I'm using the RuleAgent url to access deployed stuff ( http://anonsvn.labs.jboss.com/labs/jbossrules/trunk/drools-examples/drools-examples-brms/src/main/brmsdeployedrules.properties
> > ), I think for compatibility issues will be better remove the compiled
> > package in resources dir.
> >
> >
> > Thanks for your feedback
> >
> >
> > Fernando Meyer http://fmeyer.org
> > fmcamargo at gmail.com
> > PGP: 0xD804DDFB
> >
> >
> >
> >
> > On Jul 30, 2007, at 1:26 PM, Shahad Ahmed wrote:
> >
> > I had the same problem but managed to fix it.
> >
> > I think the problem is that the repository in the BRMS insurance example
> > was built with an old version of the MVEL library (mvel14-1.2pre5.jar)
> > which means that some the MVEL objects defined in the example repository (in
> > file repository_export.xml) have an incorrect serialVersionUID values when
> > they are accessed by the BRMS web-app, which uses a (newer?) version of MVEL
> > mvel14-1.2rc1.jar.
> >
> > Here's how I got the example working:
> >
> > 1. I assume you've already loaded the example repository from
> > repository_export.xml as described in Fernando's instructions for the BRMS
> > example in the drools 4.0GA manual (section 9, which incidentally
> > doesn't have a table of contents entry, so you have to scroll down to near
> > the end of the manual). Click the Packages option on the left-hand side of
> > the BRMS page. Select the org.acme.insurance package in the Explore
> > tab. Click on "build, validate and deploy" for this package. Then click the
> > "Build Package" button. This will build a new version of the example, but
> > using the new MVEL library. If the build worked, another button will appear
> > below the "Build Package" button called "create Snapshot for Deployment".
> > Created a new snapshot and call it what you like.
> >
> > 2. Click the Deployment option on the left-hand-side of the BRMS
> > window. Click on the Snapshot tab and then select the
> > org.acme.insurance package. The new snapshot you created should be
> > listed. Click the Open button beside it and copy the displayed Package URI
> > into the brmsdeployedrules.properties file to replace the existing key
> > called url – this is identical to the instructions in the manual. Save the
> > file.
> >
> > 3. In the example eclipse project, remove the mvel14-1.2pre5.jar from
> > the project's java build path libraries. Add in the following jars from the
> > drools 4.0 GA binary distribution:
> >
> > mvel14-1.2rc1.jar
> > drools-core-4.0.0.jar
> > drools-compiler-4.0.0.jar
> >
> > Now run MainClass in the examples eclipse project. Hopefully, you will
> > see the expected output.
> >
> > Note that the exported binary version of the insurance example found in
> > resources/org.acme.insurance.pkg suffers from the same issue. To get that
> > working as well you will need to create a new version of the file by
> > selecting "download binary package" in step 1, after clicking "Build
> > Package".
> > Also note that you get the same problem if you use the "BRMS Drools
> > 4.0.0 BRMS Standalone" version that comes with Tomcat 5.5 on the
> > download page. To fix that, find the folder
> > drools-jbrms-1.0-standalone\shared\lib and then replace
> > mvel14-1.0-SNAPSHOT.jar with the version of MVEL in the 4.0 GA binary
> > dist - mvel14-1.2rc1.jar.
> >
> > Hope this helps.
> >
> > Shahad
> >
> >
> > On 7/20/07, davidnm <davidnm at gmail.com> wrote:
> > >
> > >
> > > I did it and i got the same, i forgot to say i´m running it on Tomcat
> > > 5.5
> > > could it be the problem?
> > >
> > > Thanks.
> > >
> > >
> > >
> > > Fernando Meyer Camargo wrote:
> > > >
> > > > use double \ in your config. file
> > > >
> > > > ex. D:\\workspace2\\drools-example-brms\\cache
> > > >
> > > >
> > > >
> > > > Fernando Meyer http://fmeyer.org
> > > > fmcamargo at gmail.com
> > > > PGP: 0xD804DDFB
> > > >
> > > >
> > > >
> > > > On Jul 19, 2007, at 9:31 AM, David Nogueras wrote:
> > > >
> > > >> Hi, I´m trying to run the brms sample and i get the next output:
> > > >>
> > > >> RuleAgent(insuranceconfig) INFO (Thu Jul 19 14:27:44 CEST 2007):
> > > >> Configuring with newInstance=true, secondsToRefresh=30
> > > >> RuleAgent(insuranceconfig) INFO (Thu Jul 19 14:27:44 CEST 2007):
> > > >> Configuring package provider : URLScanner monitoring URLs: http://
> > > >> localhost:8080/drools-jbrms/org.drools.brms.JBRMS/package/
> > > >> org.acme.insurance/David2 with local cache dir of D:\workspace2
> > > >> \drools-example-brms\cache
> > > >> RuleAgent(insuranceconfig) WARNING (Thu Jul 19 14:27:44 CEST 2007):
> > > >> Falling back to local cache.
> > > >> java.lang.NullPointerException
> > > >> at org.drools.agent.FileScanner.readPackage(FileScanner.java
> > > :101)
> > > >> at org.drools.agent.FileScanner.getChangeSet (FileScanner.java
> > > :79)
> > > >> at org.drools.agent.FileScanner.loadPackageChanges
> > > >> ( FileScanner.java:57)
> > > >> at org.drools.agent.URLScanner.loadPackageChanges
> > > >> (URLScanner.java:93)
> > > >> at org.drools.agent.RuleAgent.checkForChanges (RuleAgent.java
> > > :291)
> > > >> at org.drools.agent.RuleAgent.refreshRuleBase(RuleAgent.java
> > > :259)
> > > >> at org.drools.agent.RuleAgent.configure(RuleAgent.java:228)
> > > >> at org.drools.agent.RuleAgent.init (RuleAgent.java:160)
> > > >> at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:169)
> > > >> at org.acme.insurance.launcher.InsuranceBusiness.loadRuleBase
> > > >> (InsuranceBusiness.java:26)
> > > >> at org.acme.insurance.launcher.InsuranceBusiness.executeExample
> > > >> (InsuranceBusiness.java:14)
> > > >> at org.acme.insurance.launcher.MainClass.main(MainClass.java
> > > :13)
> > > >>
> > > >> could someone help me?
> > > >> _______________________________________________
> > > >> rules-users mailing list
> > > >> rules-users at lists.jboss.org
> > > >> https://lists.jboss.org/mailman/listinfo/rules-users
> > > >
> > > >
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> > >
> > > --
> > > View this message in context: http://www.nabble.com/drools-example-brms-tf4110522.html#a11702935
> > >
> > > Sent from the drools - user mailing list archive at Nabble.com<http://nabble.com/>
> > > .
> > >
> > >
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--
Fernando Meyer
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