/*
* JBoss DNA (http://www.jboss.org/dna)
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership. Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
* See the AUTHORS.txt file in the distribution for a full listing of
* individual contributors.
*
* Unless otherwise indicated, all code in JBoss DNA is licensed
* to you under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* JBoss DNA is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.dna.graph;
import java.util.Collections;
import java.util.List;
import java.util.UUID;
import net.jcip.annotations.Immutable;
import org.jboss.dna.common.util.HashCode;
import org.jboss.dna.graph.property.Path;
import org.jboss.dna.graph.property.Property;
import org.jboss.dna.graph.property.basic.BasicSingleValueProperty;
/**
* Special location type optimized for use when only a {@link UUID} is specified. This class should never be directly instantiated
* by users of the DNA framework. Instead, use @{link Location#create} to create the correct location.
*
* @see Location
*/
@Immutable
final class LocationWithUuid extends Location {
private final UUID uuid;
private final int hashCode;
private final List<Property> properties;
LocationWithUuid( UUID uuid ) {
assert uuid != null;
this.uuid = uuid;
Property uuidProperty = new BasicSingleValueProperty(DnaLexicon.UUID, uuid);
this.properties = Collections.singletonList(uuidProperty);
this.hashCode = HashCode.compute(null, this.properties);
}
/**
* {@inheritDoc}
*
* @see org.jboss.dna.graph.Location#getIdProperties()
*/
@Override
public List<Property> getIdProperties() {
return properties;
}
/**
* {@inheritDoc}
*
* @see org.jboss.dna.graph.Location#getPath()
*/
@Override
public Path getPath() {
return null;
}
/**
* {@inheritDoc}
*
* @see Location#hasIdProperties()
*/
@Override
public final boolean hasIdProperties() {
return true;
}
/**
* {@inheritDoc}
*
* @see org.jboss.dna.graph.Location#hasPath()
*/
@Override
public boolean hasPath() {
return false;
}
/**
* {@inheritDoc}
*
* @see org.jboss.dna.graph.Location#getUuid()
*/
@Override
public UUID getUuid() {
return this.uuid;
}
/**
* {@inheritDoc}
*
* @see org.jboss.dna.graph.Location#with(org.jboss.dna.graph.property.Property)
*/
@Override
public Location with( Property newIdProperty ) {
return Location.create(getIdProperties().get(0), newIdProperty);
}
/**
* {@inheritDoc}
*
* @see org.jboss.dna.graph.Location#with(org.jboss.dna.graph.property.Path)
*/
@Override
public Location with( Path newPath ) {
return Location.create(newPath, uuid);
}
/**
* {@inheritDoc}
*
* @see org.jboss.dna.graph.Location#with(java.util.UUID)
*/
@Override
public Location with( UUID uuid ) {
return new LocationWithUuid(uuid);
}
/**
* {@inheritDoc}
*
* @see org.jboss.dna.graph.Location#hashCode()
*/
@Override
public int hashCode() {
return hashCode;
}
}