1/*2 * Licensed to the Apache Software Foundation (ASF) under one3 * or more contributor license agreements. See the NOTICE file4 * distributed with this work for additional information5 * regarding copyright ownership. The ASF licenses this file6 * to you under the Apache License, Version 2.0 (the7 * "License"); you may not use this file except in compliance8 * with the License. You may obtain a copy of the License at9 *10 * http://www.apache.org/licenses/LICENSE-2.011 *12 * Unless required by applicable law or agreed to in writing, software13 * distributed under the License is distributed on an "AS IS" BASIS,14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.15 * See the License for the specific language governing permissions and16 * limitations under the License.17 */18package org.apache.giraph.factories;
1920import org.apache.giraph.conf.GiraphConfigurationSettable;
21import org.apache.giraph.conf.ImmutableClassesGiraphConfiguration;
22import org.apache.giraph.edge.OutEdges;
23import org.apache.giraph.utils.ReflectionUtils;
24import org.apache.hadoop.io.Writable;
25import org.apache.hadoop.io.WritableComparable;
2627/**28 * Default factory class for creating {@link OutEdges} instances to be used29 * during computation. This factory simply creates an instance of the30 * {@link OutEdges} class set in the configuration.31 *32 * @param <I> Vertex ID type.33 * @param <E> Edge value type.34 */35publicclass DefaultOutEdgesFactory<I extends WritableComparable,
36 E extends Writable> implements OutEdgesFactory<I, E>,
37GiraphConfigurationSettable {
38/** Configuration */39private ImmutableClassesGiraphConfiguration<I, ?, E> conf;
4041 @Override
42publicvoid setConf(ImmutableClassesGiraphConfiguration conf) {
43this.conf = conf;
44 }
4546 @Override
47public OutEdges<I, E> newInstance() {
48return ReflectionUtils.newInstance(conf.getOutEdgesClass(), conf);
49 }
50 }