exception whilst performing load operation

Jeff Care

(1.0k●38●33) retagged

Dec 03 '13, 4:04 p.m.

I'm writing some code to load a baseline set (i.e. snapshot). I gotten this to work already by creating a temporary workspace from the baseline set, but then I noticed com.ibm.team.filesystem.client.operations.ILoadOperation.requestLoad(ISandbox, IRelativeLocation, IBaselineConnection, Collection<extends>) and thought maybe I could skip having to create the workspace.

When I tried I got this exception:

java.lang.ClassCastException&#58; $Proxy20 incompatible with com.ibm.team.scm.common.IFolder

	at com.ibm.team.filesystem.client.internal.operations.LoadEvaluator.fetchCompleteItems&#40;LoadEvaluator.java&#58;286&#41;

	at com.ibm.team.filesystem.client.internal.operations.HierarchicalLoadEvaluator.fetchInfoForLoadEvaluation&#40;HierarchicalLoadEvaluator.java&#58;382&#41;

	at com.ibm.team.filesystem.client.internal.operations.HierarchicalLoadEvaluator.getElementsToLoad&#40;HierarchicalLoadEvaluator.java&#58;245&#41;

	at com.ibm.team.filesystem.client.internal.operations.HierarchicalLoadEvaluator.doEvaluation&#40;HierarchicalLoadEvaluator.java&#58;155&#41;

	at com.ibm.team.filesystem.client.internal.operations.LoadEvaluator.evaluateLoadRequests&#40;LoadEvaluator.java&#58;86&#41;

	at com.ibm.team.filesystem.client.internal.operations.LoadOperation.evaluate&#40;LoadOperation.java&#58;480&#41;

	at com.ibm.team.filesystem.client.internal.operations.LoadOperation.evaluateLoadRequests&#40;LoadOperation.java&#58;474&#41;

	at com.ibm.team.filesystem.client.internal.operations.LoadOperation$1.run&#40;LoadOperation.java&#58;623&#41;

	at com.ibm.team.filesystem.rcp.core.internal.resources.ResourceSharingManager$1.run&#40;ResourceSharingManager.java&#58;200&#41;

	at org.eclipse.core.internal.resources.Workspace.run&#40;Workspace.java&#58;1800&#41;

	at com.ibm.team.filesystem.rcp.core.internal.resources.ResourceSharingManager.runWithinFileSystemLock&#40;ResourceSharingManager.java&#58;212&#41;

	at com.ibm.team.filesystem.client.internal.operations.FileSystemOperation.runWithinFileSystemLock&#40;FileSystemOperation.java&#58;164&#41;

	at com.ibm.team.filesystem.client.internal.operations.FileSystemOperation.runWithinFileSystemLock&#40;FileSystemOperation.java&#58;144&#41;

	at com.ibm.team.filesystem.client.internal.operations.LoadOperation.execute&#40;LoadOperation.java&#58;657&#41;

	at com.ibm.team.filesystem.client.internal.operations.FileSystemOperation.run&#40;FileSystemOperation.java&#58;89&#41;

	at com.ibm.mrbuild.rtc.applications.ExtractSnapshot.run&#40;ExtractSnapshot.java&#58;129&#41;

	at com.ibm.mrbuild.core.cli.Application.start&#40;Application.java&#58;110&#41;

	at org.eclipse.equinox.internal.app.EclipseAppHandle.run&#40;EclipseAppHandle.java&#58;194&#41;

	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication&#40;EclipseAppLauncher.java&#58;110&#41;

	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start&#40;EclipseAppLauncher.java&#58;79&#41;

	at org.eclipse.core.runtime.adaptor.EclipseStarter.run&#40;EclipseStarter.java&#58;368&#41;

	at org.eclipse.core.runtime.adaptor.EclipseStarter.run&#40;EclipseStarter.java&#58;179&#41;

	at sun.reflect.NativeMethodAccessorImpl.invoke0&#40;Native Method&#41;

	at sun.reflect.NativeMethodAccessorImpl.invoke&#40;NativeMethodAccessorImpl.java&#58;48&#41;

	at sun.reflect.DelegatingMethodAccessorImpl.invoke&#40;DelegatingMethodAccessorImpl.java&#58;25&#41;

	at java.lang.reflect.Method.invoke&#40;Method.java&#58;600&#41;

	at org.eclipse.equinox.launcher.Main.invokeFramework&#40;Main.java&#58;559&#41;

	at org.eclipse.equinox.launcher.Main.basicRun&#40;Main.java&#58;514&#41;

	at org.eclipse.equinox.launcher.Main.run&#40;Main.java&#58;1311&#41;

	at org.eclipse.equinox.launcher.Main.main&#40;Main.java&#58;1287

Here's the relevant code:

      final ILoadOperation loadOp = IOperationFactory.instance.getLoadOperation &#40;new ExtractLoadDilemaHandler &#40;&#41;&#41;;

      loadOp.setDownloadListener &#40;new DownloadListener &#40;&#41;&#41;;



      final IBaselineSet snapshot = fetch &#40;_snapshotHandle&#41;;

      for &#40;final IBaselineHandle blHandle &#58; &#40;List&lt;IBaselineHandle&gt;&#41; snapshot.getBaselines &#40;&#41;&#41; &#123;



        final IBaselineConnection connection = getWorkspaceManager &#40;&#41;.getBaselineConnection &#40;blHandle, getMonitor &#40;&#41;&#41;;



        loadOp.requestLoad &#40;sandbox,

                            null,

                            connection,

                            connection.configuration &#40;&#41;.childEntriesForRoot &#40;getMonitor &#40;&#41;&#41;.values &#40;&#41;&#41;;

      &#125;



      loadOp.run &#40;getMonitor &#40;&#41;&#41;;

Any ideas? I can go back to using a temporary workspace if need be but I would prefer not to.

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Jeff Care

Oct 23 '13, 10:09 a.m.

Still waiting for an answer on this one.

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7,194 views

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Jérôme RAULINE

(21●2●2) Oct 23 '13, 3:24 a.m.

I got this exception once.

In the RTC component, in my case, I would normally find ONLY directories from Eclipse.

I had a user who managed to put a ".project" file at the root of the component. And my loads where failing this way.

So, I changed my code to detect thoses files which are not directories at the root of a component, and remove them from the files to load.

Collection<IVersionableHandle> filesToLoad = new ArrayList<IVersionableHandle>();

Map<String, IVersionableHandle> children = configuration.childEntriesForRoot(logger.getChild());
Collection<IVersionableHandle> handles = children.values();
if (CollectionUtils.isNotEmpty(handles)) {
	Iterator<IVersionableHandle> it = handles.iterator();
	while (it.hasNext()) {
		IVersionableHandle handle = it.next();
		if (handle instanceof IFolderHandle) {
			// OK
			filesToLoad.add(handle);
		} else {
			// Ignore this one and log a message
		}
	}
}

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Tim Mok

JAZZ DEVELOPER Oct 23 '13, 10:16 a.m.

This is the correct thing to do. The load expects folders to load. Unfortunately, this isn't documented in the API because it technically isn't API. Whatever is available in the Javadoc is considered supported.

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Question asked: Mar 23 '11, 4:17 p.m.

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Last updated: Dec 03 '13, 4:04 p.m.

exception whilst performing load operation

Jeff Care

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Jeff Care

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7,194 views

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Jérôme RAULINE

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Tim Mok

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