Steema Central

Hi,

I try to use TeeChart in an Eclipse Plug-In, but I get the following erros when opening the view:

java.lang.ClassNotFoundException: org.eclipse.swt.widgets.Composite
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:506)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:422)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:410)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(Unknown Source)
at java.lang.ClassLoader.defineClass(Unknown Source)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.defineClass(DefaultClassLoader.java:188)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.defineClass(ClasspathManager.java:580)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findClassImpl(ClasspathManager.java:550)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClassImpl(ClasspathManager.java:481)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass_LockClassLoader(ClasspathManager.java:469)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:449)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:393)
at org.eclipse.osgi.internal.loader.SingleSourcePackage.loadClass(SingleSourcePackage.java:33)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:466)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:422)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:410)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(Unknown Source)
at de.gfuhamburg.ippl.editor.views.TeeChartView.createPartControl(TeeChartView.java:24)
at org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:375)
at org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:229)
at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595)
at org.eclipse.ui.internal.Perspective.showView(Perspective.java:2245)
at org.eclipse.ui.internal.WorkbenchPage.busyShowView(WorkbenchPage.java:1071)
at org.eclipse.ui.internal.WorkbenchPage$20.run(WorkbenchPage.java:3822)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.internal.WorkbenchPage.showView(WorkbenchPage.java:3819)
at org.eclipse.ui.internal.WorkbenchPage.showView(WorkbenchPage.java:3795)
at org.eclipse.ui.handlers.ShowViewHandler.openView(ShowViewHandler.java:162)
at org.eclipse.ui.handlers.ShowViewHandler.openOther(ShowViewHandler.java:106)
at org.eclipse.ui.handlers.ShowViewHandler.execute(ShowViewHandler.java:74)
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.internal.ShowViewMenu$3.run(ShowViewMenu.java:144)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584)
at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501)
at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:411)
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:4066)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3657)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2629)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2593)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2427)
at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:670)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:663)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115)
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:369)
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:619)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574)
at org.eclipse.equinox.launcher.Main.run(Main.java:1407)
at org.eclipse.equinox.launcher.Main.main(Main.java:1383)

What I have done the following steps:

1) Created a plug-in project from existing jar file with "TeeChart.SWT.jar".

2) Added this plug-in as required plug in into the plugin.xml of my project.

3) Added another view to the org.eclipse.ui.views.

4) Here is the code for the view-class:

package de.gfuhamburg.ippl.editor.views;

import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
//import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.part.ViewPart;

import com.steema.teechart.TChart;
import com.steema.teechart.drawing.Color;
import com.steema.teechart.styles.Bar;
import com.steema.teechart.styles.Series;

public class TeeChartView extends ViewPart {

public TeeChartView() {
}

@Override
public void createPartControl(Composite parent) {
/*
Text text = new Text(parent, SWT.BORDER);
text.setText("Hello World");
*/
TChart tChart1 = new TChart(parent, SWT.BORDER);
Series bar = new Bar(tChart1.getChart());
tChart1.getAxes().getBottom().setIncrement(1);
bar.add(400, "pears", Color.GREEN);
bar.add(500, "apples", Color.RED);
bar.add(400, "bananas", Color.YELLOW);
bar.add(200, "oranges", Color.ORANGE);

// tChart1.setVisible(true);

}

@Override
public void setFocus() {
// TODO Auto-generated method stub

}

}

5) Running my plugin in Eclipse works fine, opening the new view results in the above message.

Any suggestions?

Thanks in advance

Steffen

Hi Steffen,

Excuse us for the delay. We are investigating the issue and we'll be back to you asap.

Here is the solution:

There was a missing dependencie for the plug-in. The right way:

1. Create a plug-in project from a JAR file (http://www.vogella.de/articles/EclipseJ ... ticle.html)
2. Go to the MANIFEST.MF - DEPENDENCIES and add org.eclipse.swt - the missing one!

After that you can use TeeChart in a View.

Thanks

Steffen

Hi Steffen,

I'm glad to hear you've found it.
Thanks for telling it to us and for sharing the solution!