| /******************************************************************************* |
| * Copyright (c) 2003, 2016 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 |
| * Rob Harrop - SpringSource Inc. (bug 247522) |
| *******************************************************************************/ |
| package org.eclipse.osgi.internal.resolver; |
| |
| import java.util.*; |
| import org.eclipse.osgi.service.resolver.*; |
| |
| /** |
| * This class is threadsafe. |
| * |
| */ |
| final class StateDeltaImpl implements StateDelta { |
| |
| private final State state; |
| |
| private final Map<BundleDescription, BundleDelta> changes = new HashMap<>(); |
| private ResolverHookException error; |
| |
| public StateDeltaImpl(State state) { |
| this.state = state; |
| } |
| |
| public BundleDelta[] getChanges() { |
| synchronized (this.changes) { |
| return changes.values().toArray(new BundleDelta[changes.size()]); |
| } |
| } |
| |
| public BundleDelta[] getChanges(int mask, boolean exact) { |
| synchronized (this.changes) { |
| List<BundleDelta> result = new ArrayList<>(); |
| for (Iterator<BundleDelta> changesIter = changes.values().iterator(); changesIter.hasNext();) { |
| BundleDelta change = changesIter.next(); |
| if (mask == change.getType() || (!exact && (change.getType() & mask) != 0)) |
| result.add(change); |
| } |
| return result.toArray(new BundleDelta[result.size()]); |
| } |
| } |
| |
| public State getState() { |
| return state; |
| } |
| |
| public ResolverHookException getResovlerHookException() { |
| return error; |
| } |
| |
| void setResolverHookException(ResolverHookException error) { |
| this.error = error; |
| } |
| |
| void recordBundleAdded(BundleDescriptionImpl added) { |
| synchronized (this.changes) { |
| BundleDeltaImpl change = (BundleDeltaImpl) changes.get(added); |
| if (change == null) { |
| changes.put(added, new BundleDeltaImpl(added, BundleDelta.ADDED)); |
| return; |
| } |
| if (change.getType() == BundleDelta.REMOVED) { |
| changes.remove(added); |
| return; |
| } |
| int newType = change.getType(); |
| if ((newType & BundleDelta.REMOVED) != 0) |
| newType &= ~BundleDelta.REMOVED; |
| change.setType(newType | BundleDelta.ADDED); |
| change.setBundle(added); |
| } |
| } |
| |
| void recordBundleUpdated(BundleDescriptionImpl updated) { |
| synchronized (this.changes) { |
| BundleDeltaImpl change = (BundleDeltaImpl) changes.get(updated); |
| if (change == null) { |
| changes.put(updated, new BundleDeltaImpl(updated, BundleDelta.UPDATED)); |
| return; |
| } |
| if ((change.getType() & (BundleDelta.ADDED | BundleDelta.REMOVED)) != 0) |
| return; |
| change.setType(change.getType() | BundleDelta.UPDATED); |
| change.setBundle(updated); |
| } |
| } |
| |
| void recordBundleRemoved(BundleDescriptionImpl removed) { |
| synchronized (this.changes) { |
| BundleDeltaImpl change = (BundleDeltaImpl) changes.get(removed); |
| if (change == null) { |
| changes.put(removed, new BundleDeltaImpl(removed, BundleDelta.REMOVED)); |
| return; |
| } |
| if (change.getType() == BundleDelta.ADDED) { |
| changes.remove(removed); |
| return; |
| } |
| int newType = change.getType(); |
| if ((newType & BundleDelta.ADDED) != 0) |
| newType &= ~BundleDelta.ADDED; |
| change.setType(newType | BundleDelta.REMOVED); |
| } |
| } |
| |
| void recordBundleRemovalPending(BundleDescriptionImpl removed) { |
| synchronized (this.changes) { |
| BundleDeltaImpl change = (BundleDeltaImpl) changes.get(removed); |
| if (change == null) { |
| changes.put(removed, new BundleDeltaImpl(removed, BundleDelta.REMOVAL_PENDING)); |
| return; |
| } |
| int newType = change.getType(); |
| if ((newType & BundleDelta.REMOVAL_COMPLETE) != 0) |
| newType &= ~BundleDelta.REMOVAL_COMPLETE; |
| change.setType(newType | BundleDelta.REMOVAL_PENDING); |
| } |
| } |
| |
| void recordBundleRemovalComplete(BundleDescriptionImpl removed) { |
| synchronized (this.changes) { |
| BundleDeltaImpl change = (BundleDeltaImpl) changes.get(removed); |
| if (change == null) { |
| changes.put(removed, new BundleDeltaImpl(removed, BundleDelta.REMOVAL_COMPLETE)); |
| return; |
| } |
| int newType = change.getType(); |
| if ((newType & BundleDelta.REMOVAL_PENDING) != 0) |
| newType &= ~BundleDelta.REMOVAL_PENDING; |
| change.setType(newType | BundleDelta.REMOVAL_COMPLETE); |
| } |
| } |
| |
| void recordBundleResolved(BundleDescriptionImpl resolved, boolean result) { |
| synchronized (this.changes) { |
| if (resolved.isResolved() == result) |
| return; // do not record anything if nothing has changed |
| BundleDeltaImpl change = (BundleDeltaImpl) changes.get(resolved); |
| int newType = result ? BundleDelta.RESOLVED : BundleDelta.UNRESOLVED; |
| if (change == null) { |
| change = new BundleDeltaImpl(resolved, newType); |
| changes.put(resolved, change); |
| return; |
| } |
| // new type will have only one of RESOLVED|UNRESOLVED bits set |
| newType = newType | (change.getType() & ~(BundleDelta.RESOLVED | BundleDelta.UNRESOLVED)); |
| change.setType(newType); |
| change.setBundle(resolved); |
| } |
| } |
| } |