[rules-users] The Eclipse JDT Core jar is not in the classpath

[ahrimann at gmail.com]

Hi, I try to create Eclipse RCP & use drools.

Eclipse Galileo: Build id: 20100218-1602 ( Eclipse for RCP/Plug-in Developers)
Drools 5.0 downloaded with the eclipse plugin from official site.

If I create JavaApplication I have to add org.eclipse.jdt.core*.jar by
myself in the build path... but it works.
If I create RCP-Application I become all the time this error:

org.drools.RuntimeDroolsException: Unable to load dialect
'org.drools.rule.builder.dialect.java.JavaDialectConfiguration:java:org.drools.rule.builder.dialect.java.JavaDialectConfiguration'
	at org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:274)
	at org.drools.compiler.PackageBuilderConfiguration.buildDialectConfigurationMap(PackageBuilderConfiguration.java:259)
	at org.drools.compiler.PackageBuilderConfiguration.init(PackageBuilderConfiguration.java:176)
	at org.drools.compiler.PackageBuilderConfiguration.<init>(PackageBuilderConfiguration.java:153)
	at org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java:242)
	at org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java:142)
	at org.drools.builder.impl.KnowledgeBuilderProviderImpl.newKnowledgeBuilder(KnowledgeBuilderProviderImpl.java:29)
	at org.drools.builder.KnowledgeBuilderFactory.newKnowledgeBuilder(KnowledgeBuilderFactory.java:29)
	at de.intranda.qtitest.model.DroolsEvaluator.readKnowledgeBase(DroolsEvaluator.java:81)
	at de.intranda.qtitest.model.DroolsEvaluator.getNewItemRef(DroolsEvaluator.java:56)
	at de.intranda.qtitest.model.DroolsEvaluator.setNextItemRef(DroolsEvaluator.java:38)
	at de.intranda.qtitest.gui.TestView.loadNextItem(TestView.java:224)
	at de.intranda.qtitest.gui.TestView.access$3(TestView.java:220)
	at de.intranda.qtitest.gui.TestView$1.widgetSelected(TestView.java:159)
	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:228)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3910)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3503)
	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2405)
	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2369)
	at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2221)
	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:500)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:493)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
	at de.intranda.qtitest.Application.start(Application.java:27)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:194)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:368)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
	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.eclipse.equinox.launcher.Main.invokeFramework(Main.java:559)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1311)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1287)
Caused by: java.lang.RuntimeException: The Eclipse JDT Core jar is not
in the classpath
	at org.drools.rule.builder.dialect.java.JavaDialectConfiguration.setCompiler(JavaDialectConfiguration.java:94)
	at org.drools.rule.builder.dialect.java.JavaDialectConfiguration.init(JavaDialectConfiguration.java:55)
	at org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:270)
	... 39 more

I've added eclipse.core.jdt* as dependency in plugin & product. I've
added it to the build path ... but it just doesn't work :(

Please help :)