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Home » Modeling » TMF (Xtext) » Exception while loading a xbase resource(Exception while loading a xbase resource)
Exception while loading a xbase resource [message #829522] Mon, 26 March 2012 12:00 Go to next message
Björn Beyreuther is currently offline Björn BeyreutherFriend
Messages: 7
Registered: March 2012
Junior Member
Hi,
i tried to make use of the plain xbase implementation, but i have some trouble to load/access a xbase resource.

Basically the code looks like this:

package testxbase.ui;

import java.io.IOException;

import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.xtext.resource.XtextResourceSet;
import org.eclipse.xtext.util.CancelIndicator;
import org.eclipse.xtext.util.StringInputStream;
import org.eclipse.xtext.xbase.XExpression;
import org.eclipse.xtext.xbase.interpreter.IEvaluationContext;
import org.eclipse.xtext.xbase.interpreter.IEvaluationResult;
import org.eclipse.xtext.xbase.interpreter.impl.XbaseInterpreter;

import com.google.inject.Inject;
import com.google.inject.Provider;

@SuppressWarnings("restriction")
public class EvaluateAction extends org.eclipse.core.commands.AbstractHandler {

	@Inject
	private XbaseInterpreter xbaseInterpreter;

	@Inject
	private Provider<IEvaluationContext> contextProvider;

	public Object evaluate(XExpression expression, Object thisElement) {
		IEvaluationContext evaluationContext = contextProvider.get();
		IEvaluationResult result = xbaseInterpreter.evaluate(expression,
				evaluationContext, CancelIndicator.NullImpl);
		if (result.getException() != null) {
			// handle exception
		}
		return result.getResult();
	}

	@Override
	public Object execute(ExecutionEvent event) throws ExecutionException {

		XtextResourceSet resourceSet = new XtextResourceSet();
		Resource resource = resourceSet.createResource(URI
				.createURI("Test.xbase"));

		try {
			resource.load(new StringInputStream("false"), null);
		} catch (IOException e) {
			e.printStackTrace();
		}

		EcoreUtil.resolveAll(resource);

		XExpression exp = (XExpression) resource.getContents().get(0);
		Object temp = evaluate(exp, null);

		System.out.println("Result: " + temp);

		return null;
	}
}



Require-Bundle: org.eclipse.ui,
 org.eclipse.core.runtime,
 org.eclipse.xtext.xbase;bundle-version="2.0.0",
 com.google.inject;bundle-version="2.0.0",
 org.eclipse.emf;bundle-version="2.5.0",
 org.eclipse.xtext;bundle-version="2.0.0",
 org.eclipse.xtext.xbase.lib;bundle-version="2.0.0";visibility:=reexport,
 org.eclipse.ui.ide,
 org.eclipse.core.filesystem,
 org.eclipse.xtext.xbase.ui;bundle-version="2.2.1",
 org.eclipse.xtext.purexbase;bundle-version="2.2.1",
 org.eclipse.xtext.purexbase.ui;bundle-version="2.2.1"



The following exception is thrown when the handler is called.

java.lang.IllegalArgumentException: The given class java.lang.SuppressWarnings is not an annotation type.
	at org.eclipse.xtext.xbase.jvmmodel.JvmTypesBuilder.toAnnotation(JvmTypesBuilder.java:467)
	at org.eclipse.xtext.xbase.jvmmodel.JvmTypesBuilder.toAnnotation(JvmTypesBuilder.java:450)
	at org.eclipse.xtext.purexbase.jvmmodel.PureXbaseJvmModelInferrer$1.apply(PureXbaseJvmModelInferrer.java:64)
	at org.eclipse.xtext.purexbase.jvmmodel.PureXbaseJvmModelInferrer$1.apply(PureXbaseJvmModelInferrer.java:1)
	at org.eclipse.xtext.xbase.jvmmodel.JvmTypesBuilder.toClass(JvmTypesBuilder.java:170)
	at org.eclipse.xtext.purexbase.jvmmodel.PureXbaseJvmModelInferrer._infer(PureXbaseJvmModelInferrer.java:146)
	at org.eclipse.xtext.purexbase.jvmmodel.PureXbaseJvmModelInferrer.infer(PureXbaseJvmModelInferrer.java:185)
	at org.eclipse.xtext.xbase.jvmmodel.JvmModelAssociator.installDerivedState(JvmModelAssociator.java:203)
	at org.eclipse.xtext.resource.DerivedStateAwareResource.installDerivedState(DerivedStateAwareResource.java:125)
	at org.eclipse.xtext.resource.DerivedStateAwareResource.getContents(DerivedStateAwareResource.java:48)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolveAll(EcoreUtil.java:285)
	at testxbase.ui.EvaluateAction.execute(EvaluateAction.java:53)
	at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:293)
	at org.eclipse.core.commands.Command.executeWithChecks(Command.java:476)
	at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
	at org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:169)
	at org.eclipse.ui.internal.handlers.SlaveHandlerService.executeCommand(SlaveHandlerService.java:241)
	at org.eclipse.ui.menus.CommandContributionItem.handleWidgetSelection(CommandContributionItem.java:829)
	at org.eclipse.ui.menus.CommandContributionItem.access$19(CommandContributionItem.java:815)
	at org.eclipse.ui.menus.CommandContributionItem$5.handleEvent(CommandContributionItem.java:805)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4165)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3754)
	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2696)
	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2660)
	at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494)
	at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:667)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
	at testxbase.Application.start(Application.java:20)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	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:344)
	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:622)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1386)



Basically the model is loaded but if it is accessed it tries to resolve "java.lang.SuppressWarnings". Has anyone an idea how to solve this?

Cheers, Björn

[Updated on: Mon, 26 March 2012 12:01]

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Re: Exception while loading a xbase resource [message #834254 is a reply to message #829522] Sun, 01 April 2012 17:16 Go to previous message
Sebastian Zarnekow is currently offline Sebastian ZarnekowFriend
Messages: 3118
Registered: July 2009
Senior Member
Hi Björn,

you should use the XtextResourceSetProvider to obtain a working
XtextResourceSet.

Regards,
Sebastian
--
Need professional support for Eclipse Modeling?
Go visit: http://xtext.itemis.com

Am 26.03.12 14:01, schrieb Björn Beyreuther:
> Hi,
> i tried to make use of the plain xbase implementation, but i have some
> trouble to load/access a xbase resource.
>
> Basically the text code looks like this:
>
>
> package testxbase.ui;
>
> import java.io.IOException;
>
> import org.eclipse.core.commands.ExecutionEvent;
> import org.eclipse.core.commands.ExecutionException;
> import org.eclipse.emf.common.util.URI;
> import org.eclipse.emf.ecore.resource.Resource;
> import org.eclipse.emf.ecore.util.EcoreUtil;
> import org.eclipse.xtext.resource.XtextResourceSet;
> import org.eclipse.xtext.util.CancelIndicator;
> import org.eclipse.xtext.util.StringInputStream;
> import org.eclipse.xtext.xbase.XExpression;
> import org.eclipse.xtext.xbase.interpreter.IEvaluationContext;
> import org.eclipse.xtext.xbase.interpreter.IEvaluationResult;
> import org.eclipse.xtext.xbase.interpreter.impl.XbaseInterpreter;
>
> import com.google.inject.Inject;
> import com.google.inject.Provider;
>
> @SuppressWarnings("restriction")
> public class EvaluateAction extends
> org.eclipse.core.commands.AbstractHandler {
>
> @Inject
> private XbaseInterpreter xbaseInterpreter;
>
> @Inject
> private Provider<IEvaluationContext> contextProvider;
>
> public Object evaluate(XExpression expression, Object thisElement) {
> IEvaluationContext evaluationContext = contextProvider.get();
> IEvaluationResult result = xbaseInterpreter.evaluate(expression,
> evaluationContext, CancelIndicator.NullImpl);
> if (result.getException() != null) {
> // handle exception
> }
> return result.getResult();
> }
>
> @Override
> public Object execute(ExecutionEvent event) throws ExecutionException {
>
> XtextResourceSet resourceSet = new XtextResourceSet();
> Resource resource = resourceSet.createResource(URI
> .createURI("Test.xbase"));
>
> try {
> resource.load(new StringInputStream("false"), null);
> } catch (IOException e) {
> e.printStackTrace();
> }
>
> EcoreUtil.resolveAll(resource);
>
> XExpression exp = (XExpression) resource.getContents().get(0);
> Object temp = evaluate(exp, null);
>
> System.out.println("Result: " + temp);
>
> return null;
> }
> }
>
>
> Require-Bundle: org.eclipse.ui,
> org.eclipse.core.runtime,
> org.eclipse.xtext.xbase;bundle-version="2.0.0",
> com.google.inject;bundle-version="2.0.0",
> org.eclipse.emf;bundle-version="2.5.0",
> org.eclipse.xtext;bundle-version="2.0.0",
> org.eclipse.xtext.xbase.lib;bundle-version="2.0.0";visibility:=reexport,
> org.eclipse.ui.ide,
> org.eclipse.core.filesystem,
> org.eclipse.xtext.xbase.ui;bundle-version="2.2.1",
> org.eclipse.xtext.purexbase;bundle-version="2.2.1",
> org.eclipse.xtext.purexbase.ui;bundle-version="2.2.1"
>
>
> The following exception is thrown when the handler is called.
>
>
> java.lang.IllegalArgumentException: The given class
> java.lang.SuppressWarnings is not an annotation type.
> at
> org.eclipse.xtext.xbase.jvmmodel.JvmTypesBuilder.toAnnotation(JvmTypesBuilder.java:467)
>
> at
> org.eclipse.xtext.xbase.jvmmodel.JvmTypesBuilder.toAnnotation(JvmTypesBuilder.java:450)
>
> at
> org.eclipse.xtext.purexbase.jvmmodel.PureXbaseJvmModelInferrer$1.apply(PureXbaseJvmModelInferrer.java:64)
>
> at
> org.eclipse.xtext.purexbase.jvmmodel.PureXbaseJvmModelInferrer$1.apply(PureXbaseJvmModelInferrer.java:1)
>
> at
> org.eclipse.xtext.xbase.jvmmodel.JvmTypesBuilder.toClass(JvmTypesBuilder.java:170)
>
> at
> org.eclipse.xtext.purexbase.jvmmodel.PureXbaseJvmModelInferrer._infer(PureXbaseJvmModelInferrer.java:146)
>
> at
> org.eclipse.xtext.purexbase.jvmmodel.PureXbaseJvmModelInferrer.infer(PureXbaseJvmModelInferrer.java:185)
>
> at
> org.eclipse.xtext.xbase.jvmmodel.JvmModelAssociator.installDerivedState(JvmModelAssociator.java:203)
>
> at
> org.eclipse.xtext.resource.DerivedStateAwareResource.installDerivedState(DerivedStateAwareResource.java:125)
>
> at
> org.eclipse.xtext.resource.DerivedStateAwareResource.getContents(DerivedStateAwareResource.java:48)
>
> at org.eclipse.emf.ecore.util.EcoreUtil.resolveAll(EcoreUtil.java:285)
> at testxbase.ui.EvaluateAction.execute(EvaluateAction.java:53)
> at
> org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:293)
>
> at org.eclipse.core.commands.Command.executeWithChecks(Command.java:476)
> at
> org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
>
> at
> org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:169)
>
> at
> org.eclipse.ui.internal.handlers.SlaveHandlerService.executeCommand(SlaveHandlerService.java:241)
>
> at
> org.eclipse.ui.menus.CommandContributionItem.handleWidgetSelection(CommandContributionItem.java:829)
>
> at
> org.eclipse.ui.menus.CommandContributionItem.access$19(CommandContributionItem.java:815)
>
> at
> org.eclipse.ui.menus.CommandContributionItem$5.handleEvent(CommandContributionItem.java:805)
>
> at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
> at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
> at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4165)
> at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3754)
> at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2696)
> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2660)
> at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494)
> at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674)
> at
> org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
>
> at
> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:667)
> at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
> at testxbase.Application.start(Application.java:20)
> at
> org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
>
> 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:344)
>
> 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:622)
> at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
> at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
> at org.eclipse.equinox.launcher.Main.main(Main.java:1386)
>
>
>
> Basically the model is loaded but if it is accessed it tries to resolve
> "java.lang.SuppressWarnings". Has anyone an idea how to solve this?
>
> Cheers, Björn

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