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/*******************************************************************************
* Copyright (c) 2003, 2005 IBM 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.osgi.internal.resolver;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.osgi.service.resolver.*;
import org.osgi.framework.BundleException;
/**
* This implementation of State does a bookkeeping of all added/removed
*/
public class UserState extends StateImpl {
private List added = new ArrayList();
private List removed = new ArrayList();
private List updated = new ArrayList();
public synchronized boolean addBundle(BundleDescription description) {
if (!super.addBundle(description))
return false;
added.add(description.getLocation());
return true;
}
public synchronized boolean removeBundle(BundleDescription description) {
if (!super.removeBundle(description))
return false;
removed.add(description.getLocation());
return true;
}
public boolean updateBundle(BundleDescription newDescription) {
if (!super.updateBundle(newDescription))
return false;
updated.add(newDescription.getLocation());
return true;
}
public String[] getAllAdded() {
return (String[]) added.toArray(new String[added.size()]);
}
public String[] getAllRemoved() {
return (String[]) removed.toArray(new String[removed.size()]);
}
public String[] getAllUpdated() {
return (String[]) updated.toArray(new String[updated.size()]);
}
public StateDelta compare(State baseState) throws BundleException {
BundleDescription[] current = this.getBundles();
StateDeltaImpl delta = new StateDeltaImpl(this);
// process additions and updates
for (int i = 0; i < current.length; i++) {
BundleDescription existing = baseState.getBundleByLocation(current[i].getLocation());
if (existing == null)
delta.recordBundleAdded((BundleDescriptionImpl) current[i]);
else if (updated.contains(current[i].getLocation()))
delta.recordBundleUpdated((BundleDescriptionImpl) current[i]);
}
// process removals
BundleDescription[] existing = baseState.getBundles();
for (int i = 0; i < existing.length; i++) {
BundleDescription local = getBundleByLocation(existing[i].getLocation());
if (local == null)
delta.recordBundleRemoved((BundleDescriptionImpl) existing[i]);
}
return delta;
}
}
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