/*
* ModeShape (http://www.modeshape.org)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.modeshape.jcr.value.basic;
import org.modeshape.common.annotation.Immutable;
import org.modeshape.common.text.TextEncoder;
import org.modeshape.jcr.cache.NodeKey;
import org.modeshape.jcr.value.Path;
import org.modeshape.jcr.value.Reference;
/**
* A {@link Reference} implementation that uses a single {@link NodeKey} as the pointer.
*/
@Immutable
public class NodeKeyReference implements Reference {
private static final long serialVersionUID = 2299467578161645109L;
private final NodeKey key;
private final boolean weak;
private final boolean foreign;
private final boolean simple;
protected NodeKeyReference( NodeKey key,
boolean weak,
boolean foreign ) {
this(key, weak, foreign, false);
}
protected NodeKeyReference( NodeKey key,
boolean weak,
boolean foreign,
boolean simple ) {
this.key = key;
this.weak = weak;
this.foreign = foreign;
this.simple = simple;
}
@Override
public boolean isForeign() {
return foreign;
}
@Override
public boolean isSimple() {
return simple;
}
/**
* @return uuid
*/
public NodeKey getNodeKey() {
return this.key;
}
@Override
public String getString() {
return foreign ? this.key.toString() : this.key.getIdentifier();
}
@Override
public String getString( TextEncoder encoder ) {
if (encoder == null) {
encoder = Path.DEFAULT_ENCODER;
}
return encoder.encode(getString());
}
@Override
public boolean isWeak() {
return weak;
}
@Override
public int hashCode() {
return key.hashCode();
}
@Override
public int compareTo( Reference that ) {
if (this == that) {
return 0;
}
if (this.isWeak()) {
if (!that.isWeak()) {
return -1;
}
} else {
if (that.isWeak()) {
return 1;
}
}
if (that instanceof NodeKeyReference) {
NodeKeyReference thatNodeKeyReference = (NodeKeyReference)that;
if (this.foreign && !thatNodeKeyReference.foreign) {
return 1;
}
if (!this.foreign && thatNodeKeyReference.foreign) {
return -1;
}
if (this.simple && !thatNodeKeyReference.simple) {
return 1;
}
if (!this.simple && thatNodeKeyReference.simple) {
return -1;
}
return this.key.compareTo(thatNodeKeyReference.getNodeKey());
}
return this.getString().compareTo(that.getString());
}
@Override
public boolean equals( Object obj ) {
if (obj == this) {
return true;
}
if (obj instanceof NodeKeyReference) {
NodeKeyReference that = (NodeKeyReference)obj;
return this.isWeak() == that.isWeak() && this.key.equals(that.getNodeKey()) && foreign == that.foreign && simple == that.simple;
}
if (obj instanceof Reference) {
Reference that = (Reference)obj;
return this.isWeak() == that.isWeak() && this.getString().equals(that.getString());
}
return super.equals(obj);
}
@Override
public String toString() {
return this.key.toString();
}
}