/*

  * 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.edge;

 import org.apache.giraph.bsp.CentralizedServiceWorker;

 import org.apache.giraph.conf.ImmutableClassesGiraphConfiguration;

 import org.apache.hadoop.io.Writable;

 import org.apache.hadoop.io.WritableComparable;

 import org.apache.hadoop.util.Progressable;

 /**

  * Factory to create a new Edge Store

  * @param <I> vertex id

  * @param <V> vertex value

  * @param <E> edge value

  */

 public interface EdgeStoreFactory<I extends WritableComparable,

   V extends Writable, E extends Writable> {

   /**

    * Creates new edge store.

    *

    * @return edge store

    */

   EdgeStore<I, V, E> newStore();

   /**

    * Implementation class should use this method of initialization

    * of any required internal state.

    *

    * @param service Service to get partition mappings

    * @param conf Configuration

    * @param progressable Progressable

    */

   void initialize(CentralizedServiceWorker<I, V, E> service,

     ImmutableClassesGiraphConfiguration<I, V, E> conf,

     Progressable progressable);

 }