[rules-users] Guvnor - Decision Tables

HonorGod jagadeesh.motamarri at barclayscapital.com
Mon Jan 11 10:33:15 EST 2010 

Thanks for the quick response. I have been playing doing this all over the
weekend. 
I have noticed couple of issues. Drools Guvnor enforces us that we have all
the dependency packages to be included in the snapshot. Lets say my decision
table uses Log4j to spit some output to the logs....Guvnor forces me to
upload log4j jars into my package. My decision tables access some singleton
classes that have other dependencies on JMS and j2ee packages.....and guvnor
enforces me to upload them as well....

I created a package and uploaded my models [ and dependencies] which is
around 40 MB. Guvnor freezes while unpacking those jars. 

And finally after doing all this...i get weird errors while saving and
validating configurations...something like the below..

ERROR 11-01 10:07:23,616
(RepositoryServiceServlet.java:doUnexpectedFailure:66)         
java.lang.reflect.InvocationTargetException
com.google.gwt.user.server.rpc.UnexpectedException: Service method 'public
abstract org.drools.guvnor.client.rpc.ValidatedResponse org.d
s.guvnor.client.rpc.RepositoryService.savePackage(org.drools.guvnor.client.rpc.PackageConfigData)
throws com.google.gwt.user.client.rpc.
alizableException' threw an unexpected exception:
java.lang.reflect.InvocationTargetException
        at
com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure(RPC.java:360)
        at
com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:546)
        at
com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:164)
        at
com.google.gwt.user.server.rpc.RemoteServiceServlet.doPost(RemoteServiceServlet.java:86)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.jboss.seam.web.ContextFilter$1.process(ContextFilter.java:42)
        at
org.jboss.seam.servlet.ContextualHttpServletRequest.run(ContextualHttpServletRequest.java:53)
        at org.jboss.seam.web.ContextFilter.doFilter(ContextFilter.java:37)
        at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
        at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
        at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
        at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
        at
org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859)
        at
org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:574)
        at
org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1527)
        at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at org.jboss.seam.util.Reflections.invoke(Reflections.java:22)
        at
org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:31)
        at
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56)
        at
org.jboss.seam.transaction.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:28)
        at
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
        at
org.jboss.seam.core.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:77)
        at
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
        at
org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:44)
        at
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
        at
org.jboss.seam.security.SecurityInterceptor.aroundInvoke(SecurityInterceptor.java:157)
        at
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
        at
org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:107)
        at
org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:166)
        at
org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:102)
        at
org.drools.guvnor.server.ServiceImplementation_$$_javassist_8.savePackage(ServiceImplementation_$$_javassist_8.java)
        at
org.drools.guvnor.server.RepositoryServiceServlet.savePackage(RepositoryServiceServlet.java:148)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at
com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:527)
        ... 21 more
Caused by: java.lang.NoClassDefFoundError:
com/enterprisedt/net/ftp/FileTransferClientInterface
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(Unknown Source)
        at
org.drools.rule.MapBackedClassLoader.fastFindClass(MapBackedClassLoader.java:70)
        at
org.drools.rule.MapBackedClassLoader.loadClass(MapBackedClassLoader.java:89)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at
org.drools.base.ClassTypeResolver.resolveType(ClassTypeResolver.java:144)
        at
org.drools.guvnor.server.rules.SuggestionCompletionLoader.loadClass(SuggestionCompletionLoader.java:387)
        at
org.drools.guvnor.server.rules.SuggestionCompletionLoader.populateModelInfo(SuggestionCompletionLoader.java:289)
        at
org.drools.guvnor.server.rules.SuggestionCompletionLoader.processPackageHeader(SuggestionCompletionLoader.java:180)
        at
org.drools.guvnor.server.rules.SuggestionCompletionLoader.getSuggestionEngine(SuggestionCompletionLoader.java:130)
        at
org.drools.guvnor.server.util.BRMSSuggestionCompletionLoader.getSuggestionEngine(BRMSSuggestionCompletionLoader.java:52)
        at
org.drools.guvnor.server.ServiceImplementation.savePackage(ServiceImplementation.java:860)
        ... 46 more

Looks like there is a workaround for this in 5.0.1 [i am currently using
5.0] - 
https://jira.jboss.org/jira/browse/BRMS-197


Any finally when I try to build the package guvnor seems to invoke one of my
classes and is checking to see if it has some files in the classpath [not
sure how to include these] and throws a java.io.FileNotFoundException

Please help




David Sinclair-2 wrote:
> 
> Any artifact in Guvnor needs to be put into a package. Yes, you need to
> build your package and create a snapshot with said snapshot available via
> the URL
> 
> http://<your
> server>/drools-guvnor/org.drools.guvnor.Guvnor/packages/<packageName>/<snapshotName>
> 
> On Mon, Jan 11, 2010 at 9:56 AM, HonorGod <
> jagadeesh.motamarri at barclayscapital.com> wrote:
> 
>>
>> Sure...I read this part already and my question is after I uploaded the
>> decision tables, Do i need to create packages and create a snapshot so
>> that
>> I get URL?
>>
>> Please let me know.
>>
>> Thanks.
>>
>> David Sinclair-2 wrote:
>> >
>> > I would recommend you reading the Guvnor documentation, specifically
>> this
>> > section on integration of rules from Guvnor with your application
>> >
>> >
>> http://downloads.jboss.com/drools/docs/5.0.1.26597.FINAL/drools-guvnor/html_single/index.html#d0e1053
>> >
>> > On Mon, Jan 11, 2010 at 9:45 AM, HonorGod <
>> > jagadeesh.motamarri at barclayscapital.com> wrote:
>> >
>> >>
>> >> I guess the forum is too slow...may be becoz the number of people
>> using
>> >> drools is few...I was just wondering if someone can point me in right
>> >> direction..
>> >>
>> >> i upload the decision tables inot guvnor....now i need to access them
>> >> thru
>> >> java....how do i do that? Do i need to create packages with
>> drools....or
>> >> ?
>> >>
>> >>
>> >> HonorGod wrote:
>> >> >
>> >> > Hi,
>> >> >
>> >> > Is there a specific tutorial that guides step by step on how to use
>> >> drools
>> >> > guvnor to upload decision tables and use them in java code.
>> >> >
>> >> > - packages [why they are required]
>> >> > - what is deployment snapshot...is it something that is necessary?
>> >> > - any tutorials etc.
>> >> >
>> >> > Please let know.
>> >> >
>> >> > Thank You!
>> >> >
>> >>
>> >> --
>> >> View this message in context:
>> >> http://n3.nabble.com/Guvnor-Decision-Tables-tp116258p116836.html
>> >> Sent from the Drools - User mailing list archive at Nabble.com.
>> >> _______________________________________________
>> >> rules-users mailing list
>> >> rules-users at lists.jboss.org
>> >> https://lists.jboss.org/mailman/listinfo/rules-users
>> >>
>> >
>> > _______________________________________________
>> > rules-users mailing list
>> > rules-users at lists.jboss.org
>> > https://lists.jboss.org/mailman/listinfo/rules-users
>> >
>> >
>>
>> --
>> View this message in context:
>> http://n3.nabble.com/Guvnor-Decision-Tables-tp116258p116850.html
>> Sent from the Drools - User mailing list archive at Nabble.com.
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> 
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