2 * Copyright (c) 2014, 2015 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.yangtools.yang.data.codec.binfmt;
10 import static java.util.Objects.requireNonNull;
12 import com.google.common.cache.CacheBuilder;
13 import com.google.common.cache.CacheLoader;
14 import com.google.common.cache.LoadingCache;
15 import java.util.Objects;
16 import java.util.concurrent.ExecutionException;
17 import org.eclipse.jdt.annotation.NonNull;
18 import org.eclipse.jdt.annotation.Nullable;
19 import org.opendaylight.yangtools.concepts.Immutable;
20 import org.opendaylight.yangtools.yang.common.QName;
21 import org.opendaylight.yangtools.yang.common.QNameModule;
22 import org.opendaylight.yangtools.yang.common.Revision;
23 import org.opendaylight.yangtools.yang.common.XMLNamespace;
24 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
26 final class QNameFactory {
27 private static final class StringQName implements Immutable {
28 private final @NonNull String localName;
29 private final @NonNull String namespace;
30 private final @Nullable String revision;
32 StringQName(final String localName, final String namespace, final String revision) {
33 this.localName = requireNonNull(localName);
34 this.namespace = requireNonNull(namespace);
35 this.revision = revision;
39 public int hashCode() {
40 return Objects.hash(localName, namespace, revision);
44 public boolean equals(final Object obj) {
48 if (!(obj instanceof StringQName)) {
51 final StringQName other = (StringQName) obj;
52 return localName.equals(other.localName) && namespace.equals(other.namespace)
53 && Objects.equals(revision, other.revision);
57 return revision != null ? QName.create(namespace, revision, localName) : QName.create(namespace, localName);
61 private static final class ModuleQName implements Immutable {
62 private final @NonNull QNameModule module;
63 private final @NonNull String localName;
65 ModuleQName(final QNameModule module, final String localName) {
66 this.module = requireNonNull(module);
67 this.localName = requireNonNull(localName);
71 public int hashCode() {
72 return 31 * module.hashCode() + localName.hashCode();
76 public boolean equals(final Object obj) {
80 if (!(obj instanceof ModuleQName)) {
83 final ModuleQName other = (ModuleQName) obj;
84 return localName.equals(other.localName) && module.equals(other.module);
88 return QName.create(module, localName);
92 private static final class StringModule implements Immutable {
93 private final @NonNull String namespace;
94 private final @Nullable String revision;
96 StringModule(final String namespace, final String revision) {
97 this.namespace = requireNonNull(namespace);
98 this.revision = revision;
102 public int hashCode() {
103 return 31 * namespace.hashCode() + Objects.hashCode(revision);
107 public boolean equals(final Object obj) {
111 if (!(obj instanceof StringModule)) {
114 final StringModule other = (StringModule) obj;
115 return namespace.equals(other.namespace) && Objects.equals(revision, other.revision);
118 QNameModule toQNameModule() {
119 return QNameModule.create(XMLNamespace.of(namespace), Revision.ofNullable(revision));
123 private static final int MAX_QNAME_CACHE_SIZE = Integer.getInteger(
124 "org.opendaylight.controller.cluster.datastore.node.utils.qname-cache.max-size", 10000);
125 private static final int MAX_MODULE_CACHE_SIZE = Integer.getInteger(
126 "org.opendaylight.controller.cluster.datastore.node.utils.module-cache.max-size", 2000);
128 private static final LoadingCache<StringQName, QName> STRING_CACHE = CacheBuilder.newBuilder()
129 .maximumSize(MAX_QNAME_CACHE_SIZE).weakValues().build(new CacheLoader<StringQName, QName>() {
131 public QName load(final StringQName key) {
132 return key.toQName().intern();
135 private static final LoadingCache<ModuleQName, QName> QNAME_CACHE = CacheBuilder.newBuilder()
136 .maximumSize(MAX_QNAME_CACHE_SIZE).weakValues().build(new CacheLoader<ModuleQName, QName>() {
138 public QName load(final ModuleQName key) {
139 return key.toQName().intern();
142 private static final LoadingCache<StringModule, QNameModule> MODULE_CACHE = CacheBuilder.newBuilder()
143 .maximumSize(MAX_MODULE_CACHE_SIZE).weakValues().build(new CacheLoader<StringModule, QNameModule>() {
145 public QNameModule load(final StringModule key) {
146 return key.toQNameModule().intern();
149 private static final LoadingCache<ModuleQName, NodeIdentifier> NODEID_CACHE = CacheBuilder.newBuilder()
150 .maximumSize(MAX_QNAME_CACHE_SIZE).weakValues().build(new CacheLoader<ModuleQName, NodeIdentifier>() {
152 public NodeIdentifier load(final ModuleQName key) throws ExecutionException {
153 return NodeIdentifier.create(QNAME_CACHE.get(key));
157 private QNameFactory() {
161 static QName create(final String localName, final String namespace, final @Nullable String revision) {
162 return STRING_CACHE.getUnchecked(new StringQName(localName, namespace, revision));
165 static QName create(final QNameModule module, final String localName) {
166 return QNAME_CACHE.getUnchecked(new ModuleQName(module, localName));
169 static QNameModule createModule(final String namespace, final @Nullable String revision) {
170 return MODULE_CACHE.getUnchecked(new StringModule(namespace, revision));
173 static @NonNull NodeIdentifier getNodeIdentifier(final QNameModule module, final String localName)
174 throws ExecutionException {
175 return NODEID_CACHE.get(new ModuleQName(module, localName));