Hello together,
I developed a own Node extension for KNIME. This extension also implements an additional PortType, which I also developed. My Nodes and Port connections are working fine, but:
When I’am putting nodes (my developed nodes and/or others) into a metanode, I can not reconfigure them. When I try to Add a new In- or Out-Port to the meta node, the selection dialog is not appearing.
In the eclipse console gives me the following exception:
!ENTRY org.eclipse.ui 4 0 2018-09-06 17:59:07.305
!MESSAGE Unhandled event loop exception
!STACK 0
java.lang.NoClassDefFoundError: Could not initialize class org.knime.workbench.editor2.meta.MetaPortDialog
at org.knime.workbench.editor2.meta.ConfigureMetaNodePortsPage.addPort(ConfigureMetaNodePortsPage.java:632)
at org.knime.workbench.editor2.meta.ConfigureMetaNodePortsPage.access$1(ConfigureMetaNodePortsPage.java:629)
at org.knime.workbench.editor2.meta.ConfigureMetaNodePortsPage$7.widgetDefaultSelected(ConfigureMetaNodePortsPage.java:563)
at org.knime.workbench.editor2.meta.ConfigureMetaNodePortsPage$7.widgetSelected(ConfigureMetaNodePortsPage.java:558)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:249)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:86)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4428)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1079)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4238)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3817)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:818)
at org.eclipse.jface.window.Window.open(Window.java:794)
at org.knime.workbench.editor2.actions.MetaNodeReconfigureAction.runOnNodes(MetaNodeReconfigureAction.java:147)
at org.knime.workbench.editor2.actions.AbstractNodeAction.runInSWT(AbstractNodeAction.java:173)
at org.knime.workbench.editor2.actions.AbstractNodeAction$1.run(AbstractNodeAction.java:159)
at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:233)
at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:144)
at org.eclipse.swt.widgets.Display.syncExec(Display.java:4889)
at org.knime.workbench.editor2.actions.AbstractNodeAction.run(AbstractNodeAction.java:156)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:473)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:565)
at org.eclipse.jface.action.ActionContributionItem.lambda$4(ActionContributionItem.java:397)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:86)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4428)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1079)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4238)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3817)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1150)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1039)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:153)
at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:680)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:594)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148)
at org.knime.product.rcp.KNIMEApplication.start(KNIMEApplication.java:144)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)
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:653)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590)
at org.eclipse.equinox.launcher.Main.run(Main.java:1499)
at org.eclipse.equinox.launcher.Main.main(Main.java:1472)