| /* |
| * 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.tinkerpop.gremlin.giraph.process.computer; |
| |
| import org.apache.giraph.edge.Edge; |
| import org.apache.giraph.edge.OutEdges; |
| import org.apache.hadoop.io.NullWritable; |
| import org.apache.tinkerpop.gremlin.hadoop.structure.io.ObjectWritable; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| import java.util.Collections; |
| import java.util.Iterator; |
| |
| /** |
| * @author Marko A. Rodriguez (http://markorodriguez.com) |
| */ |
| public final class EmptyOutEdges implements OutEdges<ObjectWritable, NullWritable> { |
| |
| private static final EmptyOutEdges INSTANCE = new EmptyOutEdges(); |
| |
| public static EmptyOutEdges instance() { |
| return INSTANCE; |
| } |
| |
| @Override |
| public void initialize(final Iterable<Edge<ObjectWritable, NullWritable>> edges) { |
| } |
| |
| @Override |
| public void initialize(final int capacity) { |
| } |
| |
| @Override |
| public void initialize() { |
| } |
| |
| @Override |
| public void add(final Edge<ObjectWritable, NullWritable> edge) { |
| } |
| |
| @Override |
| public void remove(final ObjectWritable targetVertexId) { |
| } |
| |
| @Override |
| public int size() { |
| return 0; |
| } |
| |
| @Override |
| public Iterator<Edge<ObjectWritable, NullWritable>> iterator() { |
| return Collections.emptyIterator(); |
| } |
| |
| @Override |
| public void write(final DataOutput dataOutput) throws IOException { |
| } |
| |
| @Override |
| public void readFields(final DataInput dataInput) throws IOException { |
| } |
| } |