/*

  * 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.graph;

 import org.apache.hadoop.mapreduce.Mapper;

 /**

  * Immutable global state of the graph.

  */

 public class GraphState {

   /** Graph-wide superstep */

   private final long superstep;

   /** Graph-wide number of vertices */

   private final long numVertices;

   /** Graph-wide number of edges */

   private final long numEdges;

   /** Graph-wide map context */

   private final Mapper<?, ?, ?, ?>.Context context;

   /**

    * Constructor

    *

    * @param superstep Current superstep

    * @param numVertices Current graph-wide vertices

    * @param numEdges Current graph-wide edges

    * @param context Context

    *

    */

   public GraphState(long superstep, long numVertices, long numEdges,

       Mapper<?, ?, ?, ?>.Context context) {

     this.superstep = superstep;

     this.numVertices = numVertices;

     this.numEdges = numEdges;

     this.context = context;

   }

   public long getSuperstep() {

     return superstep;

   }

   public long getTotalNumVertices() {

     return numVertices;

   }

   public long getTotalNumEdges() {

     return numEdges;

   }

   public Mapper.Context getContext() {

     return context;

   }

   @Override

   public String toString() {

     return "(superstep=" + superstep + ",numVertices=" + numVertices + "," +

         "numEdges=" + numEdges + ",context=" + context + ")";

   }

 }