Hi Gayank, You are trying to change the EMF model in runtime. In this kind of change cannot execute without using transaction API[1] (All changes made to the model should be done using commands). You can find the same kind of issues in here[2][3].
[1] http://publib.boulder.ibm.com/infocenter/rsmhelp/v7r0m0/index.jsp?topic=/org.eclipse.gmf.doc/reference/api/runtime/org/eclipse/gmf/runtime/emf/commands/core/command/CompositeTransactionalCommand.html [2] http://www.eclipse.org/forums/index.php/t/207283/ [3] http://www.eclipse.org/forums/index.php/t/239693/ On Wed, Apr 16, 2014 at 9:16 PM, Gayan Yalpathwala <gay...@wso2.com> wrote: > Hi, > > I am trying to dynamically update one of the datamapper GMF editparts > using the following [1] code snippet. This throws an IllegalStateException > [2]. Any idea on how I can update the resource set in run-time? > > [1] > TreeNode graphicalTreeModel = rootDiagram.getInput().getTreeNode().get(0); > TreeNode treeNodeNew = DataMapperFactory.eINSTANCE.createTreeNode(); > treeNodeNew.setName("Test node"); > treeNodeNew.setLevel(2); > treeNodeNew.setSchemaDataType(SchemaDataType.INT); > graphicalTreeModel.getNode().add(treeNodeNew); > > [2] > !MESSAGE Cannot modify resource set without a write transaction > !STACK 0 > 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.processObjectNotification(TransactionChangeRecorder.java:284) > at > org.eclipse.emf.transaction.impl.TransactionChangeRecorder.notifyChanged(TransactionChangeRecorder.java:240) > 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.NotificationImpl.dispatch(NotificationImpl.java:1032) > at > org.eclipse.emf.common.notify.impl.NotifyingListImpl.addUnique(NotifyingListImpl.java:299) > at org.eclipse.emf.common.util.AbstractEList.add(AbstractEList.java:303) > at > dataMapper.diagram.custom.action.AddNewRecordAction.addNewRecordToModel(AddNewRecordAction.java:119) > at > dataMapper.diagram.custom.action.AddNewRecordAction.doRun(AddNewRecordAction.java:99) > at > org.eclipse.gmf.runtime.common.ui.action.AbstractActionHandler.run(AbstractActionHandler.java:359) > at > org.eclipse.gmf.runtime.common.ui.action.ActionManager$1.run(ActionManager.java:225) > at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) > at > org.eclipse.gmf.runtime.common.ui.action.ActionManager.run(ActionManager.java:223) > at > org.eclipse.gmf.runtime.common.ui.action.AbstractActionHandler.runWithEvent(AbstractActionHandler.java:377) > 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:1392) > at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3742) > at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3363) > 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:140) > at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:611) > 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(NativeMethodAccessorImpl.java:57) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:601) > 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) > > Thanks, > > -- > *Gayan Kaushalya Yalpathwala* > Software Engineer > WSO2 Inc.; http://wso2.com > lean.enterprise.middleware > > mobile: +94 71 8682704 <http://asia14.wso2con.com/> > > <http://asia14.wso2con.com/> > > _______________________________________________ > Dev mailing list > Dev@wso2.org > http://wso2.org/cgi-bin/mailman/listinfo/dev > > -- *Lali Sudaththa Devamanthri* Software Engineer WSO2 Inc.; http://wso2.com lean.enterprise.middleware mobile: +94 71 895 4922 <http://www.wso2.com>
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