/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.jena.hadoop.rdf.types;
import java.io.DataInput;
import java.io.IOException;
import org.apache.jena.atlas.lib.tuple.Tuple ;
import org.apache.jena.atlas.lib.tuple.TupleFactory ;
import org.apache.jena.graph.Node ;
/**
* A writable RDF tuple
* <p>
* Unlike the more specific {@link TripleWritable} and {@link QuadWritable} this
* class allows for arbitrary length tuples and does not restrict tuples to
* being of uniform size.
* </p>
*
*
*
*/
public class NodeTupleWritable extends AbstractNodeTupleWritable<Tuple<Node>> {
/**
* Creates a new empty instance
*/
public NodeTupleWritable() {
this(null);
}
/**
* Creates a new instance with the given value
*
* @param tuple
* Tuple
*/
public NodeTupleWritable(Tuple<Node> tuple) {
super(tuple);
}
/**
* Creates a new instance from the given input
*
* @param input
* Input
* @return New instance
* @throws IOException
*/
public static NodeTupleWritable read(DataInput input) throws IOException {
NodeTupleWritable t = new NodeTupleWritable();
t.readFields(input);
return t;
}
@Override
protected Tuple<Node> createTuple(Node[] ns) {
return TupleFactory.create(ns);
}
@Override
protected Node[] createNodes(Tuple<Node> tuple) {
Node n[] = new Node[tuple.len()] ;
tuple.copyInto(n);
return n ;
}
}