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/*******************************************************************************
* Copyright (c) 2007, 2009 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.equinox.internal.p2.rollback;
import java.util.*;
import java.util.Map.Entry;
import org.eclipse.equinox.internal.p2.director.SimplePlanner;
import org.eclipse.equinox.internal.provisional.p2.director.ProfileChangeRequest;
import org.eclipse.equinox.p2.engine.IProfile;
import org.eclipse.equinox.p2.metadata.IInstallableUnit;
import org.eclipse.equinox.p2.metadata.query.InstallableUnitQuery;
public class FormerState {
public static ProfileChangeRequest generateProfileDeltaChangeRequest(IProfile current, IProfile target) {
ProfileChangeRequest request = new ProfileChangeRequest(current);
synchronizeProfileProperties(request, current, target);
synchronizeMarkedIUs(request, current, target);
synchronizeAllIUProperties(request, current, target);
return request;
}
private static void synchronizeAllIUProperties(ProfileChangeRequest request, IProfile current, IProfile target) {
Set<IInstallableUnit> currentIUset = current.query(InstallableUnitQuery.ANY, null).unmodifiableSet();
Iterator<IInstallableUnit> targetIUs = target.query(InstallableUnitQuery.ANY, null).iterator();
List<IInstallableUnit> iusToAdd = new ArrayList<IInstallableUnit>();
List<IInstallableUnit> iusToUpdate = new ArrayList<IInstallableUnit>();
while (targetIUs.hasNext()) {
IInstallableUnit nxt = targetIUs.next();
if (currentIUset.contains(nxt))
iusToUpdate.add(nxt);
else
iusToAdd.add(nxt);
}
//additions
for (IInstallableUnit iu : iusToAdd) {
for (Entry<String, String> entry : target.getInstallableUnitProperties(iu).entrySet()) {
request.setInstallableUnitProfileProperty(iu, entry.getKey(), entry.getValue());
}
}
// updates
for (IInstallableUnit iu : iusToUpdate) {
Map<String, String> propertiesToSet = new HashMap<String, String>(target.getInstallableUnitProperties(iu));
for (Entry<String, String> entry : current.getInstallableUnitProperties(iu).entrySet()) {
String key = entry.getKey();
String newValue = propertiesToSet.get(key);
if (newValue == null) {
request.removeInstallableUnitProfileProperty(iu, key);
} else if (newValue.equals(entry.getValue()))
propertiesToSet.remove(key);
}
for (Entry<String, String> entry : propertiesToSet.entrySet()) {
request.setInstallableUnitProfileProperty(iu, entry.getKey(), entry.getValue());
}
}
}
private static void synchronizeMarkedIUs(ProfileChangeRequest request, IProfile current, IProfile target) {
IInstallableUnit[] currentPlannerMarkedIUs = SimplePlanner.findPlannerMarkedIUs(current);
IInstallableUnit[] targetPlannerMarkedIUs = SimplePlanner.findPlannerMarkedIUs(target);
//additions
List<IInstallableUnit> markedIUsToAdd = new ArrayList<IInstallableUnit>(Arrays.asList(targetPlannerMarkedIUs));
markedIUsToAdd.removeAll(Arrays.asList(currentPlannerMarkedIUs));
request.addInstallableUnits(markedIUsToAdd);
// removes
List<IInstallableUnit> markedIUsToRemove = new ArrayList<IInstallableUnit>(Arrays.asList(currentPlannerMarkedIUs));
markedIUsToRemove.removeAll(Arrays.asList(targetPlannerMarkedIUs));
request.removeInstallableUnits(markedIUsToRemove);
}
private static void synchronizeProfileProperties(ProfileChangeRequest request, IProfile current, IProfile target) {
Map<String, String> profilePropertiesToSet = new HashMap<String, String>(target.getProperties());
for (Entry<String, String> entry : current.getProperties().entrySet()) {
String key = entry.getKey();
String newValue = profilePropertiesToSet.get(key);
if (newValue == null) {
request.removeProfileProperty(key);
} else if (newValue.equals(entry.getValue()))
profilePropertiesToSet.remove(key);
}
for (Entry<String, String> entry : profilePropertiesToSet.entrySet()) {
request.setProfileProperty(entry.getKey(), entry.getValue());
}
}
}
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