Coverage Report - org.apache.giraph.mapping.MappingStore
 
Classes in this File Line Coverage Branch Coverage Complexity
MappingStore
N/A
N/A
1
 
 1  
 /*
 2  
  * Licensed to the Apache Software Foundation (ASF) under one
 3  
  * or more contributor license agreements.  See the NOTICE file
 4  
  * distributed with this work for additional information
 5  
  * regarding copyright ownership.  The ASF licenses this file
 6  
  * to you under the Apache License, Version 2.0 (the
 7  
  * "License"); you may not use this file except in compliance
 8  
  * with the License.  You may obtain a copy of the License at
 9  
  *
 10  
  *     http://www.apache.org/licenses/LICENSE-2.0
 11  
  *
 12  
  * Unless required by applicable law or agreed to in writing, software
 13  
  * 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 and
 16  
  * limitations under the License.
 17  
  */
 18  
 
 19  
 package org.apache.giraph.mapping;
 20  
 
 21  
 import org.apache.giraph.conf.ImmutableClassesGiraphConfigurable;
 22  
 import org.apache.hadoop.io.Writable;
 23  
 import org.apache.hadoop.io.WritableComparable;
 24  
 
 25  
 /**
 26  
  * MappingStore used to store the vertexId - target map supplied by user
 27  
  * Methods implemented in this class need to be thread safe
 28  
  *
 29  
  * @param <I> vertexId type
 30  
  * @param <B> mappingTarget type
 31  
  */
 32  
 public interface MappingStore<I extends WritableComparable, B extends Writable>
 33  
   extends ImmutableClassesGiraphConfigurable<I, Writable, Writable> {
 34  
 
 35  
   /**
 36  
    * Must be called before anything else can be done
 37  
    * on this instance
 38  
    */
 39  
   void initialize();
 40  
 
 41  
   /**
 42  
    * Add an entry to the mapping store
 43  
    *
 44  
    * @param vertexId vertexId
 45  
    * @param target target
 46  
    */
 47  
   void addEntry(I vertexId, B target);
 48  
 
 49  
   /**
 50  
    * Get target for given vertexId
 51  
    *
 52  
    * @param vertexId vertexId
 53  
    * @param target instance to use for storing target information
 54  
    * @return target instance
 55  
    */
 56  
   B getTarget(I vertexId, B target);
 57  
 
 58  
   /**
 59  
    * Operations to perform after adding entries
 60  
    * to the mapping store
 61  
    */
 62  
   void postFilling();
 63  
 
 64  
   /**
 65  
    * Get stats about the MappingStore
 66  
    *
 67  
    * @return numEntries
 68  
    */
 69  
   long getStats();
 70  
 }