content: /*
   * 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.spark.api.java;
  
  import org.apache.spark.storage.StorageLevel;
  
  /**
   * Expose some commonly useful storage level constants.
   */
  public class StorageLevels {
    public static final StorageLevel NONE = create(false, false, false, false, 1);
    public static final StorageLevel DISK_ONLY = create(true, false, false, false, 1);
    public static final StorageLevel DISK_ONLY_2 = create(true, false, false, false, 2);
    public static final StorageLevel MEMORY_ONLY = create(false, true, false, true, 1);
    public static final StorageLevel MEMORY_ONLY_2 = create(false, true, false, true, 2);
    public static final StorageLevel MEMORY_ONLY_SER = create(false, true, false, false, 1);
    public static final StorageLevel MEMORY_ONLY_SER_2 = create(false, true, false, false, 2);
    public static final StorageLevel MEMORY_AND_DISK = create(true, true, false, true, 1);
    public static final StorageLevel MEMORY_AND_DISK_2 = create(true, true, false, true, 2);
    public static final StorageLevel MEMORY_AND_DISK_SER = create(true, true, false, false, 1);
    public static final StorageLevel MEMORY_AND_DISK_SER_2 = create(true, true, false, false, 2);
    public static final StorageLevel OFF_HEAP = create(false, false, true, false, 1);
  
    /**
     * Create a new StorageLevel object.
     * @param useDisk saved to disk, if true
     * @param useMemory saved to memory, if true
     * @param deserialized saved as deserialized objects, if true
     * @param replication replication factor
     */
    @Deprecated
    public static StorageLevel create(boolean useDisk, boolean useMemory, boolean deserialized,
        int replication) {
      return StorageLevel.apply(useDisk, useMemory, false, deserialized, replication);
    }
  
    /**
     * Create a new StorageLevel object.
     * @param useDisk saved to disk, if true
     * @param useMemory saved to memory, if true
     * @param useOffHeap saved to Tachyon, if true
     * @param deserialized saved as deserialized objects, if true
     * @param replication replication factor
     */
    public static StorageLevel create(
      boolean useDisk,
      boolean useMemory,
      boolean useOffHeap,
      boolean deserialized,
      int replication) {
      return StorageLevel.apply(useDisk, useMemory, useOffHeap, deserialized, replication);
    }
  }
  