trunk/gora-cassandra/src/main/java/org/apache/gora/cassandra/store/HectorUtils.java

/**
 * 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.gora.cassandra.store;

import java.nio.ByteBuffer;
import java.util.Arrays;

import me.prettyprint.cassandra.serializers.ByteBufferSerializer;
import me.prettyprint.cassandra.serializers.IntegerSerializer;
import me.prettyprint.cassandra.serializers.StringSerializer;
import me.prettyprint.hector.api.beans.HColumn;
import me.prettyprint.hector.api.beans.HSuperColumn;
import me.prettyprint.hector.api.factory.HFactory;
import me.prettyprint.hector.api.mutation.Mutator;
import me.prettyprint.hector.api.Serializer;

import org.apache.gora.persistency.Persistent;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class HectorUtils<K,T extends Persistent> {

  public static final Logger LOG = LoggerFactory.getLogger(HectorUtils.class);
  
  public static<K> void insertColumn(Mutator<K> mutator, K key, String columnFamily, ByteBuffer columnName, ByteBuffer columnValue) {
    mutator.insert(key, columnFamily, createColumn(columnName, columnValue));
  }

  public static<K> void insertColumn(Mutator<K> mutator, K key, String columnFamily, String columnName, ByteBuffer columnValue) {
    mutator.insert(key, columnFamily, createColumn(columnName, columnValue));
  }


  public static<K> HColumn<ByteBuffer,ByteBuffer> createColumn(ByteBuffer name, ByteBuffer value) {
    return HFactory.createColumn(name, value, ByteBufferSerializer.get(), ByteBufferSerializer.get());
  }

  public static<K> HColumn<String,ByteBuffer> createColumn(String name, ByteBuffer value) {
    return HFactory.createColumn(name, value, StringSerializer.get(), ByteBufferSerializer.get());
  }

  public static<K> HColumn<Integer,ByteBuffer> createColumn(Integer name, ByteBuffer value) {
    return HFactory.createColumn(name, value, IntegerSerializer.get(), ByteBufferSerializer.get());
  }


  public static<K> void insertSubColumn(Mutator<K> mutator, K key, String columnFamily, String superColumnName, ByteBuffer columnName, ByteBuffer columnValue) {
    mutator.insert(key, columnFamily, createSuperColumn(superColumnName, columnName, columnValue));
  }

  public static<K> void insertSubColumn(Mutator<K> mutator, K key, String columnFamily, String superColumnName, String columnName, ByteBuffer columnValue) {
    mutator.insert(key, columnFamily, createSuperColumn(superColumnName, columnName, columnValue));
  }

  public static<K> void insertSubColumn(Mutator<K> mutator, K key, String columnFamily, String superColumnName, Integer columnName, ByteBuffer columnValue) {
    mutator.insert(key, columnFamily, createSuperColumn(superColumnName, columnName, columnValue));
  }


  public static<K> void deleteSubColumn(Mutator<K> mutator, K key, String columnFamily, String superColumnName, ByteBuffer columnName) {
    mutator.subDelete(key, columnFamily, superColumnName, columnName, StringSerializer.get(), ByteBufferSerializer.get());
  }


  public static<K> HSuperColumn<String,ByteBuffer,ByteBuffer> createSuperColumn(String superColumnName, ByteBuffer columnName, ByteBuffer columnValue) {
    return HFactory.createSuperColumn(superColumnName, Arrays.asList(createColumn(columnName, columnValue)), StringSerializer.get(), ByteBufferSerializer.get(), ByteBufferSerializer.get());
  }

  public static<K> HSuperColumn<String,String,ByteBuffer> createSuperColumn(String superColumnName, String columnName, ByteBuffer columnValue) {
    return HFactory.createSuperColumn(superColumnName, Arrays.asList(createColumn(columnName, columnValue)), StringSerializer.get(), StringSerializer.get(), ByteBufferSerializer.get());
  }

  public static<K> HSuperColumn<String,Integer,ByteBuffer> createSuperColumn(String superColumnName, Integer columnName, ByteBuffer columnValue) {
    return HFactory.createSuperColumn(superColumnName, Arrays.asList(createColumn(columnName, columnValue)), StringSerializer.get(), IntegerSerializer.get(), ByteBufferSerializer.get());
  }

}