/*
* Copyright 2011 Revelytix Inc.
*
* 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 spark.spi.rdf;
import spark.api.rdf.BlankNode;
/**
* Basic implementation of {@link BlankNode}.
*
* toString as: _:label
*/
public class BlankNodeImpl implements BlankNode {
private final String label;
/**
* Construct a new BlankNode with a label
* @param label
*/
public BlankNodeImpl(String label) {
this.label = label;
}
@Override
public String getLabel() {
return this.label;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((label == null) ? 0 : label.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (!(obj instanceof BlankNode))
return false;
BlankNode other = (BlankNode) obj;
if (label == null) {
if (other.getLabel() != null)
return false;
} else if (!label.equals(other.getLabel()))
return false;
return true;
}
public String toString() {
return "_:" + label;
}
}