グラファイト ダイアグラムから取得した EClass オブジェクトを CDO リポジトリに保存しようとしていますが、書き込みトランザクション エラーが発生します。新しい空の EClass オブジェクトを作成して CDO リポジトリに保存すると、エラーは表示されません。コードとエラー メッセージをこの投稿に含めました。
この問題についてご提供いただけるご支援をよろしくお願いいたします。ジョン・アンダーソン
ソースコード：
package uk.man.ac.graphiti.toolbarbuttons;
import java.util.List;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.emf.cdo.eresource.CDOResource;
import org.eclipse.emf.cdo.net4j.CDONet4jSession;
import org.eclipse.emf.cdo.net4j.CDONet4jSessionConfiguration;
import org.eclipse.emf.cdo.net4j.CDONet4jUtil;
import org.eclipse.emf.cdo.transaction.CDOTransaction;
import org.eclipse.emf.cdo.util.CommitException;
import org.eclipse.emf.cdo.util.ConcurrentAccessException;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl;
import org.eclipse.graphiti.mm.pictograms.ContainerShape;
import org.eclipse.graphiti.mm.pictograms.PictogramElement;
import org.eclipse.graphiti.platform.IDiagramContainer;
import org.eclipse.graphiti.services.Graphiti;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.net4j.Net4jUtil;
import org.eclipse.net4j.connector.IConnector;
import org.eclipse.net4j.tcp.TCPUtil;
import org.eclipse.net4j.util.container.IPluginContainer;
import org.eclipse.net4j.util.lifecycle.ILifecycle;
import org.eclipse.net4j.util.lifecycle.LifecycleEventAdapter;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.handlers.HandlerUtil;
public class Deposit extends AbstractHandler {
private static CDONet4jSession cdoSession;
public static CDONet4jSession openSession(String repoName) {
CDONet4jSession session = null;
try {
final IConnector connector = (IConnector) IPluginContainer.INSTANCE
.getElement( //
"org.eclipse.net4j.connectors", // Product group
"tcp", // Type
"localhost"); // Description
CDONet4jSessionConfiguration config = CDONet4jUtil
.createNet4jSessionConfiguration();
config.setConnector(connector);
config.setRepositoryName(repoName);
session = config.openNet4jSession();
} catch (Exception e) {
return null;
}
return session;
}
@Override
public Object execute(ExecutionEvent event) {
String msg = null;
EClass eclass = null;
IWorkbench wb = PlatformUI.getWorkbench();
IWorkbenchWindow win = wb.getActiveWorkbenchWindow();
IWorkbenchPage page = win.getActivePage();
IEditorPart editor = page.getActiveEditor();
if (editor instanceof IDiagramContainer) {
IDiagramContainer graphitiEditor = (IDiagramContainer) editor;
System.out.println("total.pe.elements="+graphitiEditor.getSelectedPictogramElements().length);
PictogramElement pe = graphitiEditor.getSelectedPictogramElements()[0];
Object bo = Graphiti.getLinkService()
.getBusinessObjectForLinkedPictogramElement(pe);
System.out.println("in1");
if (bo == null) {
msg = "You must select an EClass object";
sendMessage(event, msg);
System.out.println("in2");
} else {
if (bo instanceof EClass) {
eclass = (EClass) bo;
try {
System.out.println("in3");
Net4jUtil.prepareContainer(IPluginContainer.INSTANCE);
TCPUtil.prepareContainer(IPluginContainer.INSTANCE);
cdoSession = openSession("graphiti");
if (cdoSession != null) {
CDOTransaction transaction = cdoSession
.openTransaction();
CDOResource resource = transaction
.getOrCreateResource("/depositUsingButtonResource");
List<EObject> eclasslist = resource.getContents();
Boolean exists = false;
EClass temp = null;
for (int i = 0; i < eclasslist.size(); i++) {
temp = (EClass) eclasslist.get(i);
if (temp.getName().matches(eclass.getName())) {
exists = true;
break;
}
}
if (exists == true) {
msg = "Object already exists in repository";
} else {
resource.getContents().add(eclass);
transaction.commit();
msg = "Successful Deposit";
}
sendMessage(event, msg);
} else {
msg = "Deposit failed";
sendMessage(event, msg);
}
cdoSession.close();
} catch (ConcurrentAccessException e) {
msg = "Deposit failed";
sendMessage(event, msg);
} catch (CommitException e) {
msg = "Deposit failed";
sendMessage(event, msg);
}
}
}
}
return null;
}
private void sendMessage(ExecutionEvent event, String msg) {
MessageDialog.openInformation(
HandlerUtil.getActiveWorkbenchWindow(event).getShell(),
"Result", msg);
}
}
エラーメッセージ：
!ENTRY org.eclipse.ui 4 0 2014-03-19 12:00:04.847
!MESSAGE Unhandled event loop exception
!STACK 0
org.eclipse.e4.core.di.InjectionException: java.lang.IllegalStateException: Cannot modify resource set without a write transaction
at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:63)
at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:243)
at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:224)
at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:132)
at org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(HandlerServiceHandler.java:167)
at org.eclipse.core.commands.Command.executeWithChecks(Command.java:499)
at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:213)
at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.executeItem(HandledContributionItem.java:850)
at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.handleWidgetSelection(HandledContributionItem.java:743)
at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.access$7(HandledContributionItem.java:727)
at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem$4.handleEvent(HandledContributionItem.java:662)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1057)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4170)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3759)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1113)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:997)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:138)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:610)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:567)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
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:354)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181)
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:636)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)
at org.eclipse.equinox.launcher.Main.run(Main.java:1450)
at org.eclipse.equinox.launcher.Main.main(Main.java:1426)
Caused by: java.lang.IllegalStateException: Cannot modify resource set without a write transaction
at org.eclipse.emf.transaction.impl.TransactionChangeRecorder.assertWriting(TransactionChangeRecorder.java:348)
at org.eclipse.emf.transaction.impl.TransactionChangeRecorder.appendNotification(TransactionChangeRecorder.java:302)
at org.eclipse.emf.transaction.impl.TransactionChangeRecorder.processResourceNotification(TransactionChangeRecorder.java:272)
at org.eclipse.emf.transaction.impl.TransactionChangeRecorder.notifyChanged(TransactionChangeRecorder.java:238)
at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:374)
at org.eclipse.emf.common.notify.impl.NotificationImpl.dispatch(NotificationImpl.java:1027)
at org.eclipse.emf.common.notify.impl.DelegatingNotifyingListImpl.addUnique(DelegatingNotifyingListImpl.java:305)
at org.eclipse.emf.common.util.AbstractEList.add(AbstractEList.java:303)
at uk.man.ac.graphiti.toolbarbuttons.Deposit.execute(Deposit.java:113)
at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:290)
at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:90)
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.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:56)
... 37 more