org.modeshape.jcr.cache.ChildReference Maven / Gradle / Ivy
/*
* 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.cache;
import org.modeshape.common.annotation.Immutable;
import org.modeshape.jcr.value.Name;
import org.modeshape.jcr.value.NamespaceRegistry;
import org.modeshape.jcr.value.Path.Segment;
import org.modeshape.jcr.value.basic.BasicPathSegment;
/**
* An immutable reference to a child node.
*/
@Immutable
public class ChildReference implements Comparable {
private final NodeKey key;
private final Segment segment;
public ChildReference( NodeKey key,
Name name,
int snsIndex ) {
this.key = key;
this.segment = new BasicPathSegment(name, snsIndex);
}
public ChildReference( NodeKey key,
Segment segment ) {
this.key = key;
this.segment = segment;
}
/**
* @return key
*/
public NodeKey getKey() {
return key;
}
/**
* @return name
*/
public Name getName() {
return segment.getName();
}
/**
* @return snsIndex
*/
public int getSnsIndex() {
return segment.getIndex();
}
public Segment getSegment() {
return segment;
}
@Override
public int compareTo( ChildReference that ) {
if (that == this) return 0;
int diff = this.segment.compareTo(that.segment);
if (diff != 0) return diff;
return this.key.compareTo(that.key);
}
@Override
public boolean equals( Object obj ) {
if (obj == this) return true;
if (obj instanceof ChildReference) {
ChildReference that = (ChildReference)obj;
return this.key.equals(that.key);
}
return false;
}
@Override
public int hashCode() {
return key.hashCode();
}
@Override
public String toString() {
return this.segment.getString() + " (key=" + key + ")";
}
public String getSegmentAsString( NamespaceRegistry registry ) {
return this.segment.getString(registry);
}
public String toString( NamespaceRegistry registry ) {
return "\"" + this.segment.getString(registry) + "\"=" + key;
}
public ChildReference with( int snsIndex ) {
return snsIndex == segment.getIndex() ? this : new ChildReference(key, segment.getName(), snsIndex);
}
public ChildReference with( Name name,
int snsIndex ) {
if (snsIndex == segment.getIndex() && segment.getName().equals(name)) return this;
return new ChildReference(key, name, snsIndex);
}
}
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