| /*************************************************************************** |
| * Copyright (c) 2004 - 2008 Eike Stepper, Germany. |
| * 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: |
| * Eike Stepper - initial API and implementation |
| **************************************************************************/ |
| package org.eclipse.emf.internal.cdo.protocol; |
| |
| import org.eclipse.emf.cdo.CDOFetchRuleManager; |
| import org.eclipse.emf.cdo.common.CDODataInput; |
| import org.eclipse.emf.cdo.common.CDODataOutput; |
| import org.eclipse.emf.cdo.common.CDOProtocolConstants; |
| import org.eclipse.emf.cdo.common.analyzer.CDOFetchRule; |
| import org.eclipse.emf.cdo.common.id.CDOID; |
| import org.eclipse.emf.cdo.spi.common.revision.InternalCDORevision; |
| |
| import org.eclipse.emf.internal.cdo.CDORevisionManagerImpl; |
| import org.eclipse.emf.internal.cdo.bundle.OM; |
| |
| import org.eclipse.net4j.util.om.trace.ContextTracer; |
| |
| import java.io.IOException; |
| import java.text.MessageFormat; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.List; |
| |
| /** |
| * @author Eike Stepper |
| */ |
| public class LoadRevisionRequest extends CDOClientRequest<List<InternalCDORevision>> |
| { |
| private static final ContextTracer PROTOCOL_TRACER = new ContextTracer(OM.DEBUG_PROTOCOL, LoadRevisionRequest.class); |
| |
| private Collection<CDOID> ids; |
| |
| private int referenceChunk; |
| |
| public LoadRevisionRequest(CDOClientProtocol protocol, Collection<CDOID> ids, int referenceChunk) |
| { |
| this(protocol, CDOProtocolConstants.SIGNAL_LOAD_REVISION, ids, referenceChunk); |
| } |
| |
| public LoadRevisionRequest(CDOClientProtocol protocol, short signalID, Collection<CDOID> ids, int referenceChunk) |
| { |
| super(protocol, signalID); |
| this.ids = ids; |
| this.referenceChunk = referenceChunk; |
| } |
| |
| @Override |
| protected void requesting(CDODataOutput out) throws IOException |
| { |
| if (PROTOCOL_TRACER.isEnabled()) |
| { |
| PROTOCOL_TRACER.format("Writing referenceChunk: {0}", referenceChunk); |
| } |
| |
| out.writeInt(referenceChunk); |
| if (PROTOCOL_TRACER.isEnabled()) |
| { |
| PROTOCOL_TRACER.format("Writing {0} IDs", ids.size()); |
| } |
| |
| out.writeInt(ids.size()); |
| for (CDOID id : ids) |
| { |
| if (PROTOCOL_TRACER.isEnabled()) |
| { |
| PROTOCOL_TRACER.format("Writing ID: {0}", id); |
| } |
| |
| out.writeCDOID(id); |
| } |
| |
| CDORevisionManagerImpl revisionManager = (CDORevisionManagerImpl)getRevisionManager(); |
| CDOFetchRuleManager ruleManager = revisionManager.getRuleManager(); |
| List<CDOFetchRule> fetchRules = ruleManager.getFetchRules(ids); |
| if (fetchRules == null || fetchRules.size() <= 0) |
| { |
| out.writeInt(0); |
| } |
| else |
| { |
| // At this point, fetch size is more than one. |
| int fetchSize = fetchRules.size(); |
| CDOID contextID = ruleManager.getContext(); |
| |
| out.writeInt(fetchSize); |
| out.writeInt(ruleManager.getCollectionLoadingPolicy().getInitialChunkSize()); |
| out.writeCDOID(contextID); |
| |
| for (CDOFetchRule fetchRule : fetchRules) |
| { |
| fetchRule.write(out); |
| } |
| } |
| } |
| |
| @Override |
| protected List<InternalCDORevision> confirming(CDODataInput in) throws IOException |
| { |
| int idSize = ids.size(); |
| ArrayList<InternalCDORevision> revisions = new ArrayList<InternalCDORevision>(idSize); |
| if (PROTOCOL_TRACER.isEnabled()) |
| { |
| PROTOCOL_TRACER.format("Reading {0} revisions", idSize); |
| } |
| |
| for (int i = 0; i < idSize; i++) |
| { |
| InternalCDORevision revision = (InternalCDORevision)in.readCDORevision(); |
| revisions.add(revision); |
| } |
| |
| int additionalSize = in.readInt(); |
| if (additionalSize != 0) |
| { |
| if (PROTOCOL_TRACER.isEnabled()) |
| { |
| PROTOCOL_TRACER.format("Reading {0} additional revisions", additionalSize); |
| } |
| |
| CDORevisionManagerImpl revisionManager = (CDORevisionManagerImpl)getRevisionManager(); |
| for (int i = 0; i < additionalSize; i++) |
| { |
| InternalCDORevision revision = (InternalCDORevision)in.readCDORevision(); |
| if (revision != null) |
| { |
| revisionManager.addCachedRevision(revision); |
| } |
| } |
| } |
| |
| return revisions; |
| } |
| |
| public Collection<CDOID> getIds() |
| { |
| return ids; |
| } |
| |
| public int getReferenceChunk() |
| { |
| return referenceChunk; |
| } |
| |
| @Override |
| public String toString() |
| { |
| return MessageFormat.format("{0}(ids={1}, referenceChunk={2})", getClass().getSimpleName(), ids, referenceChunk); |
| } |
| } |