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/*******************************************************************************
* Copyright (c) 2001, 2007 Oracle Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Oracle Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.jsf.core.internal.jsflibraryregistry.util;
import java.io.IOException;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.xmi.XMLResource;
import org.eclipse.jst.jsf.core.internal.JSFCorePlugin;
import org.eclipse.jst.jsf.core.internal.Messages;
import org.eclipse.jst.jsf.core.internal.jsflibraryconfig.JSFLibraryRegistryUtil;
class MigrateV1toV2Operation extends VersionUpgradeOperation {
private final URI _v1Registry;
private final URI _v2Registry;
/**
* @param label
* @param v1Registry
* @param v2Registry
*/
public MigrateV1toV2Operation(String label, URI v1Registry, URI v2Registry) {
super(label, 1, 2);
_v1Registry = v1Registry;
_v2Registry = v2Registry;
}
public IStatus doCommit() {
JSFLibraryRegistryUpgradeUtil.deleteFile(_v1Registry.toFileString());
return Status.OK_STATUS;
}
public IStatus doExecute(IProgressMonitor monitor, IAdaptable info)
{
JSFLibraryRegistryUpgradeUtil.copyFile
(_v1Registry.toFileString(), JSFLibraryRegistryUpgradeUtil.getBackupFileName(_v1Registry.toFileString()));
JSFLibraryRegistryResourceFactoryImpl resourceFactory = new JSFLibraryRegistryResourceFactoryImpl();
JSFLibraryRegistryResourceImpl res = (JSFLibraryRegistryResourceImpl)resourceFactory.createResource(_v1Registry);
try {
URI newRegURI =
JSFLibraryRegistryUpgradeUtil.getRegistryURI
(JSFLibraryRegistryUpgradeUtil.JSF_LIBRARY_REGISTRY_V2_URL);
Map options = new HashMap();
//disable notifications during load to avoid changing stored default implementation
options.put(XMLResource.OPTION_DISABLE_NOTIFY, Boolean.TRUE);
res.load(options);
//if we got this far then the registry was empty
//"upgrade" to v2 and then delete old. no point in upgrade status being sent
JSFLibraryRegistryUtil.getInstance().saveJSFLibraryRegistry();
JSFLibraryRegistryUpgradeUtil.copyFile(_v1Registry.toFileString(), newRegURI.toFileString());//save as v2 file
JSFLibraryRegistryUpgradeUtil.deleteFile(_v1Registry.toFileString());
return new UpgradeStatus();//all is ok and no need to alert user
} catch(IOException ioe) {
//this was expected... if there was actual v1 contents in the regsistry... upgrade by saving
//perform save which will lose the ID
try {
res.save(Collections.EMPTY_MAP);
//create v2 xml file
URI newRegURI =
JSFLibraryRegistryUpgradeUtil.getRegistryURI
(JSFLibraryRegistryUpgradeUtil.JSF_LIBRARY_REGISTRY_V2_URL);
JSFLibraryRegistryUpgradeUtil.copyFile(_v1Registry.toFileString(), newRegURI.toFileString());
//delete upgraded v1
JSFLibraryRegistryUpgradeUtil.deleteFile(_v1Registry.toFileString());
//restore backup to v1 name
JSFLibraryRegistryUpgradeUtil.copyFile(_v1Registry.toFileString().concat(".bkp"), _v1Registry.toFileString());
//Alert end user
return new UpgradeStatus(IStatus.OK, true, Messages.JSFRegistryMigration05_to_10_customMessage);
} catch(IOException e) {
JSFCorePlugin.log(IStatus.ERROR, "Error during repository upgrade from v1 to v2", e);
return new UpgradeStatus(IStatus.ERROR, false,
Messages.JSFRegistryMigrationCannot05_to_10_customMessage);
}
}
//return ;
}
public IStatus doRedo(IProgressMonitor monitor, IAdaptable info)
throws ExecutionException {
return doExecute(monitor, info);
}
public boolean canUndo() {
// commit is undoable for this operation
return super.canUndo() && !hasCommitted();
}
public IStatus doUndo(IProgressMonitor monitor, IAdaptable info)
throws ExecutionException
{
//restore backup to v1 name
JSFLibraryRegistryUpgradeUtil.copyFile(_v1Registry.toFileString().concat(".bkp"), _v1Registry.toFileString());
// delete the new registry
JSFLibraryRegistryUpgradeUtil.deleteFile(_v2Registry.toFileString());
//and the backup
JSFLibraryRegistryUpgradeUtil.deleteFile(_v1Registry.toFileString().concat(".bkp"));
return Status.OK_STATUS;
}
}
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