[rules-users] Need Drools 5.1 in .NET

[Mark Proctor]

You will need ot do this for all the transititive dependencies too. 
Quartz is an optional dependency JAR, seems IKVM is insisting those are 
available on the .net classpath.

Maven will output a graph of transititive dependencies for you to view.

Once you get this working, please post details online :)
http://maven.apache.org/plugins/maven-dependency-plugin/tree-mojo.html


Mark
On 07/06/2011 13:41, yashgt wrote:
> Hi,
>
> We are trying to use the Drools 5.1 engine in a .NET application and hence
> have been trying to convert the JAR files to DLLs. We use IKVM 0.46.* for
> the conversion.
>
> We have added all the JARs from the drools 5.1 package to the CLASSPATH. We
> run the command:
>
> ikvmc -target:library drools-api-5.1.1.jar
>
> The output we get is similar to:
> Note IKVMC0002: output file is "drools-api-5.1.1.dll"
> Warning IKVMC0100: class "org.quartz.Calendar" not found
> Warning IKVMC0111: emitted java.lang.NoClassDefFoundError in
> "org.drools.runtime
> .help.QuartzHelper$QuartzCalendarAdapter.isTimeIncluded(J)Z"
> Warning IKVMC0100: class "com.sun.tools.xjc.Options" not found
> Warning IKVMC0105: unable to compile class
> "org.drools.osgi.api.Activator$Drools
> ("org.quartz.Calendar")
> Warning IKVMC0100: class "com.thoughtworks.xstream.XStream" not found
> ServiceTracker"
> (missing class "org.osgi.util.tracker.ServiceTrackerCustomizer")
> Warning IKVMC0105: unable to compile class "org.drools.osgi.api.Activator"
> (missing class "org.osgi.framework.BundleActivator")
> Warning IKVMC0100: class "org.osgi.framework.BundleContext" not found
> Warning IKVMC0100: class "org.osgi.framework.ServiceReference" not found
> Warning IKVMC0100: class "org.drools.osgi.api.Activator" not found
> Warning IKVMC0111: emitted java.lang.NoClassDefFoundError in
> "org.drools.osgi.ap
> i.Activator$BundleContextInstantiator.call()Ljava.lang.Object;"
> ("org.osgi.framework.BundleContext")
>
> We have done the above process for all the JAR files in the drools folder.
>
> The DLLs do get created and we are able to compile our .NET application to
> use the classes. But during execution at:
>   KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
>
> We get the exception that says:
>      - IllegalArgumentException : Unable to instantiate service for Class
> 'org.drools.builder.KnowledgeBuilderFactoryService"
>      - ClassNotFoundException:
> org.drools.builder.impl.KnowledgeBuilderFactoryServiceImpl
> 	
> The jar files are already in the CLASSPATH when we run the .NET app	.
>
> I am not sure whether these errors are due to the Warnings we see during
> conversion.	
>
> If anyone has been successful in obtaining a DLL from drools 5.1, kindly let
> me know the steps.
>
> Thanks and regards,
> Yash
>
> --
> View this message in context: http://drools.46999.n3.nabble.com/Need-Drools-5-1-in-NET-tp3034264p3034264.html
> Sent from the Drools: User forum mailing list archive at Nabble.com.
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