001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements. See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership. The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.commons.rdf.jsonldjava;
019
020import org.apache.commons.rdf.api.BlankNode;
021
022import com.github.jsonldjava.core.RDFDataset.Node;
023
024public interface JsonLdBlankNode extends JsonLdTerm, BlankNode {
025}
026
027final class JsonLdBlankNodeImpl extends JsonLdTermImpl implements JsonLdBlankNode {
028    private final String blankNodePrefix;
029
030    JsonLdBlankNodeImpl(final Node node, final String blankNodePrefix) {
031        super(node);
032        this.blankNodePrefix = blankNodePrefix;
033        if (!node.isBlankNode()) {
034            throw new IllegalArgumentException("Node is not a BlankNode:" + node);
035        }
036    }
037
038    @Override
039    public String ntriplesString() {
040        // TODO: Escape if this is not valid ntriples string (e.g. contains :)
041        return node.getValue();
042    }
043
044    @Override
045    public String uniqueReference() {
046        return blankNodePrefix + node.getValue();
047    }
048
049    @Override
050    public boolean equals(final Object obj) {
051        if (!(obj instanceof BlankNode)) {
052            return false;
053        }
054        final BlankNode other = (BlankNode) obj;
055        return uniqueReference().equals(other.uniqueReference());
056    }
057
058    @Override
059    public int hashCode() {
060        return uniqueReference().hashCode();
061    }
062
063    @Override
064    public String toString() {
065        return ntriplesString() + " [" + uniqueReference() + "]";
066    }
067}