2 * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.controller.cluster.datastore.modification;
10 import static com.google.common.base.Preconditions.checkArgument;
11 import static java.util.Objects.requireNonNull;
13 import java.io.IOException;
14 import java.io.ObjectInput;
15 import java.io.ObjectOutput;
16 import java.util.ArrayList;
17 import java.util.Collections;
18 import java.util.List;
19 import org.opendaylight.controller.cluster.datastore.DataStoreVersions;
20 import org.opendaylight.controller.cluster.datastore.messages.VersionedExternalizableMessage;
21 import org.opendaylight.mdsal.dom.spi.store.DOMStoreWriteTransaction;
22 import org.opendaylight.yangtools.yang.data.api.schema.stream.ReusableStreamReceiver;
23 import org.opendaylight.yangtools.yang.data.codec.binfmt.NormalizedNodeDataInput;
24 import org.opendaylight.yangtools.yang.data.codec.binfmt.NormalizedNodeDataOutput;
25 import org.opendaylight.yangtools.yang.data.impl.schema.ReusableImmutableNormalizedNodeStreamWriter;
26 import org.opendaylight.yangtools.yang.data.tree.api.DataTreeModification;
29 * MutableCompositeModification is just a mutable version of a CompositeModification.
31 public class MutableCompositeModification extends VersionedExternalizableMessage implements CompositeModification {
32 private static final long serialVersionUID = 1L;
34 private final List<Modification> modifications = new ArrayList<>();
35 private List<Modification> immutableModifications = null;
37 public MutableCompositeModification() {
38 this(DataStoreVersions.CURRENT_VERSION);
41 public MutableCompositeModification(final short version) {
46 public void apply(final DOMStoreWriteTransaction transaction) {
47 for (Modification modification : modifications) {
48 modification.apply(transaction);
53 public void apply(final DataTreeModification transaction) {
54 for (Modification modification : modifications) {
55 modification.apply(transaction);
60 public byte getType() {
65 * Add a new Modification to the list of Modifications represented by this composite.
67 * @param modification the modification to add.
69 public void addModification(final Modification modification) {
70 modifications.add(requireNonNull(modification));
73 public void addModifications(final Iterable<Modification> newMods) {
74 for (Modification mod : newMods) {
80 public List<Modification> getModifications() {
81 if (immutableModifications == null) {
82 immutableModifications = Collections.unmodifiableList(modifications);
85 return immutableModifications;
89 public void readExternal(final ObjectInput in) throws IOException, ClassNotFoundException {
90 super.readExternal(in);
91 final int size = in.readInt();
93 if (getVersion() >= DataStoreVersions.PHOSPHORUS_VERSION) {
94 readExternalModern(NormalizedNodeDataInput.newDataInput(in), size);
96 readExternalLegacy(in, size);
102 public void writeExternal(final ObjectOutput out) throws IOException {
103 super.writeExternal(out);
104 final int size = modifications.size();
107 if (getVersion() >= DataStoreVersions.PHOSPHORUS_VERSION) {
108 writeExternalModern(out);
110 writeExternalLegacy(out);
115 private void readExternalLegacy(final ObjectInput in, final int size) throws IOException {
116 final NormalizedNodeDataInput input = NormalizedNodeDataInput.newDataInputWithoutValidation(in);
117 final ReusableStreamReceiver receiver = ReusableImmutableNormalizedNodeStreamWriter.create();
118 for (int i = 0; i < size; i++) {
119 final byte type = in.readByte();
121 case Modification.WRITE:
122 modifications.add(WriteModification.fromStream(input, getVersion(), receiver));
124 case Modification.MERGE:
125 modifications.add(MergeModification.fromStream(input, getVersion(), receiver));
127 case Modification.DELETE:
128 modifications.add(DeleteModification.fromStream(input, getVersion()));
136 private void writeExternalLegacy(final ObjectOutput out) throws IOException {
137 try (NormalizedNodeDataOutput stream = getStreamVersion().newDataOutput(out)) {
138 for (Modification mod : modifications) {
139 out.writeByte(mod.getType());
145 private void readExternalModern(final NormalizedNodeDataInput in, final int size) throws IOException {
146 final ReusableStreamReceiver receiver = ReusableImmutableNormalizedNodeStreamWriter.create();
147 for (int i = 0; i < size; i++) {
148 final byte type = in.readByte();
150 case Modification.WRITE:
151 modifications.add(WriteModification.fromStream(in, getVersion(), receiver));
153 case Modification.MERGE:
154 modifications.add(MergeModification.fromStream(in, getVersion(), receiver));
156 case Modification.DELETE:
157 modifications.add(DeleteModification.fromStream(in, getVersion()));
165 private void writeExternalModern(final ObjectOutput out) throws IOException {
166 try (NormalizedNodeDataOutput stream = getStreamVersion().newDataOutput(out)) {
167 for (Modification mod : modifications) {
168 stream.writeByte(mod.getType());
174 public static MutableCompositeModification fromSerializable(final Object serializable) {
175 checkArgument(serializable instanceof MutableCompositeModification);
176 return (MutableCompositeModification)serializable;
180 public void writeTo(final NormalizedNodeDataOutput out) throws IOException {
181 throw new UnsupportedOperationException();