content: /*
   * Copyright 2014-2015 Amazon.com, Inc. or its affiliates. All Rights Reserved.
   *
   * Licensed under the Apache License, Version 2.0 (the "License").
   * You may not use this file except in compliance with the License.
   * A copy of the License is located at
   *
   *  http://aws.amazon.com/apache2.0
   *
   * or in the "license" file accompanying this file. This file 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 com.amazon.janusgraph.diskstorage.dynamodb;
  
  import java.util.Collection;
  import java.util.Map;
  
  import org.janusgraph.diskstorage.BackendException;
  import org.janusgraph.diskstorage.StaticBuffer;
  import org.janusgraph.diskstorage.keycolumnvalue.KCVMutation;
  import org.janusgraph.diskstorage.keycolumnvalue.KeyColumnValueStore;
  
  import com.amazon.janusgraph.diskstorage.dynamodb.mutation.MutateWorker;
  
  /**
   * Responsible for communicating with a single AWS backing store table.
   *
   * @author Matthew Sowders
   * @author Alexander Patrikalakis
   *
   */
  public interface AwsStore extends KeyColumnValueStore {
  
      /**
       * Creates the KCV store and underlying DynamoDB tables.
       * @throws BackendException if unable to ensure the underlying store
       */
      void ensureStore() throws BackendException;
  
      /**
       * Deletes the KCV store and underlying DynamoDB tables.
       * @throws BackendException
       */
      void deleteStore() throws BackendException;
  
      /**
       * Titan relies on static store names to be used, but we want the ability to
       * have multiple graphs in a single region, so prepend a configurable prefix to the
       * underlying table names of each graph and get the DynamoDB table name with this method
       *
       * @return the table name corresponding to the KCVStore
       */
      String getTableName();
  
      /**
       * Creates workers whose job it is to commit the actual mutations in the given mutation map.
       * @param mutationMap
       * @param txh
       * @return a collection of MutateWorker objects that when executed will commit all changes specified by mutationMap
       */
      Collection<MutateWorker> createMutationWorkers(Map<StaticBuffer, KCVMutation> mutationMap,
                                                     DynamoDbStoreTransaction txh);
  
  }
  