| /* |
| * 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.giraph.worker; |
| |
| import org.apache.giraph.aggregators.AggregatorUsage; |
| import org.apache.hadoop.io.Writable; |
| |
| /** |
| * Vertex classes can access and change aggregators through this interface |
| */ |
| public interface WorkerAggregatorUsage extends AggregatorUsage { |
| /** |
| * Add a new value |
| * |
| * @param name Name of aggregator |
| * @param value Value to add |
| * @param <A> Aggregated value |
| */ |
| <A extends Writable> void aggregate(String name, A value); |
| } |