[rules-users] Drools Basic Example

[Mark Proctor]

Looks like you have a a Groovy plugin installed and that is causing 
problems.

Mark
On 20/02/2012 03:58, pprabhu59 wrote:
> Hello All,
>
> I just followed JBPM installation steps from JBoss Org, just created a new
> drools project.
> When i try to run it has a java application i am getting the following
> error.
> Checked the forums but unable to get concrete solution.
>
> Build groovy files option has not been set one way or the other: use
> 'options.put(CompilerOptions.OPTIONG_BuildGroovyFiles,
> CompilerOptions.ENABLED);'
> java.lang.NoClassDefFoundError: org/eclipse/core/runtime/Plugin
> 	at java.lang.ClassLoader.defineClass1(Native Method)
> 	at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
> 	at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
> 	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
> 	at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
> 	at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
> 	at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> 	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> 	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> 	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> 	at
> org.eclipse.jdt.internal.compiler.Compiler.initializeParser(Compiler.java:737)
> 	at org.eclipse.jdt.internal.compiler.Compiler.<init>(Compiler.java:294)
> 	at org.eclipse.jdt.internal.compiler.Compiler.<init>(Compiler.java:159)
> 	at
> org.drools.commons.jci.compilers.EclipseJavaCompiler.compile(EclipseJavaCompiler.java:356)
> 	at
> org.drools.commons.jci.compilers.AbstractJavaCompiler.compile(AbstractJavaCompiler.java:49)
> 	at
> org.drools.rule.builder.dialect.java.JavaDialect.compileAll(JavaDialect.java:368)
> 	at
> org.drools.compiler.DialectCompiletimeRegistry.compileAll(DialectCompiletimeRegistry.java:53)
> 	at org.drools.compiler.PackageRegistry.compileAll(PackageRegistry.java:70)
> 	at org.drools.compiler.PackageBuilder.compileAll(PackageBuilder.java:844)
> 	at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:801)
> 	at
> org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:385)
> 	at
> org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:563)
> 	at
> org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:35)
> 	at com.sample.DroolsTest.readKnowledgeBase(DroolsTest.java:46)
> 	at com.sample.DroolsTest.main(DroolsTest.java:23)
> Caused by: java.lang.ClassNotFoundException: org.eclipse.core.runtime.Plugin
> 	at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> 	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> 	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> 	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> 	... 27 more
>
>
> --
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