1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
/*
* Copyright (c) 2010-2012, 2014-2016 Eike Stepper (Berlin, Germany) 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:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.emf.cdo.internal.net4j.protocol;
import org.eclipse.emf.cdo.common.branch.CDOBranchPoint;
import org.eclipse.emf.cdo.common.id.CDOID;
import org.eclipse.emf.cdo.common.protocol.CDODataInput;
import org.eclipse.emf.cdo.common.protocol.CDODataOutput;
import org.eclipse.emf.cdo.common.protocol.CDOProtocolConstants;
import org.eclipse.emf.cdo.common.revision.CDORevision;
import org.eclipse.emf.cdo.common.util.CDOFetchRule;
import org.eclipse.emf.cdo.internal.net4j.bundle.OM;
import org.eclipse.emf.cdo.session.CDOCollectionLoadingPolicy;
import org.eclipse.emf.cdo.spi.common.revision.RevisionInfo;
import org.eclipse.emf.cdo.view.CDOFetchRuleManager;
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 LoadRevisionsRequest extends CDOClientRequest<List<RevisionInfo>>
{
private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG_PROTOCOL, LoadRevisionsRequest.class);
private List<RevisionInfo> infos;
private CDOBranchPoint branchPoint;
private int referenceChunk;
private int prefetchDepth;
public LoadRevisionsRequest(CDOClientProtocol protocol, List<RevisionInfo> infos, CDOBranchPoint branchPoint, int referenceChunk, int prefetchDepth)
{
super(protocol, CDOProtocolConstants.SIGNAL_LOAD_REVISIONS);
this.infos = infos;
this.branchPoint = branchPoint;
this.referenceChunk = referenceChunk;
this.prefetchDepth = prefetchDepth;
}
@Override
protected void requesting(CDODataOutput out) throws IOException
{
if (TRACER.isEnabled())
{
TRACER.format("Writing branchPoint: {0}", branchPoint); //$NON-NLS-1$
}
out.writeCDOBranchPoint(branchPoint);
if (TRACER.isEnabled())
{
TRACER.format("Writing referenceChunk: {0}", referenceChunk); //$NON-NLS-1$
}
out.writeInt(referenceChunk);
int size = infos.size();
if (TRACER.isEnabled())
{
TRACER.format("Writing {0} infos", size); //$NON-NLS-1$
}
if (prefetchDepth == 0)
{
out.writeInt(size);
}
else
{
out.writeInt(-size);
if (TRACER.isEnabled())
{
TRACER.format("Writing prefetchDepth: {0}", prefetchDepth); //$NON-NLS-1$
}
out.writeInt(prefetchDepth);
}
Collection<CDOID> ids = new ArrayList<CDOID>(size);
for (RevisionInfo info : infos)
{
if (TRACER.isEnabled())
{
TRACER.format("Writing info: {0}", info); //$NON-NLS-1$
}
info.write(out);
ids.add(info.getID());
}
CDOFetchRuleManager ruleManager = getSession().getFetchRuleManager();
CDOCollectionLoadingPolicy collectionLoadingPolicy = ruleManager.getCollectionLoadingPolicy();
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(collectionLoadingPolicy != null ? collectionLoadingPolicy.getInitialChunkSize() : CDORevision.UNCHUNKED);
out.writeCDOID(contextID);
for (CDOFetchRule fetchRule : fetchRules)
{
fetchRule.write(out);
}
}
}
@Override
protected List<RevisionInfo> confirming(CDODataInput in) throws IOException
{
int size = infos.size();
if (TRACER.isEnabled())
{
TRACER.format("Reading {0} revisions", size); //$NON-NLS-1$
}
for (RevisionInfo info : infos)
{
info.readResult(in);
}
List<RevisionInfo> additionalRevisionInfos = null;
int additionalSize = in.readInt();
if (additionalSize != 0)
{
if (TRACER.isEnabled())
{
TRACER.format("Reading {0} additional revision infos", additionalSize); //$NON-NLS-1$
}
additionalRevisionInfos = new ArrayList<RevisionInfo>(additionalSize);
for (int i = 0; i < additionalSize; i++)
{
RevisionInfo info = RevisionInfo.read(in, branchPoint);
info.readResult(in);
additionalRevisionInfos.add(info);
}
}
return additionalRevisionInfos;
}
@Override
public String toString()
{
return MessageFormat.format("LoadRevisionsRequest(infos={0}, branchPoint={1}, referenceChunk={2}, prefetchDepth={3})", infos, branchPoint, referenceChunk,
prefetchDepth);
}
}
|
