content: /*
   * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
   * (the "License"). You may not use this work except in compliance with the License, which is
   * available at www.apache.org/licenses/LICENSE-2.0
   *
   * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
   * either express or implied, as more fully set forth in the License.
   *
   * See the NOTICE file distributed with this work for information regarding copyright ownership.
   */
  
  package alluxio.client;
  
  import javax.annotation.concurrent.ThreadSafe;
  
  /**
   * Specifies the type of data interaction with Alluxio's Under Storage. This is not applicable for
   * reads. Only writing temporary data is suggested to use type {@link #NO_PERSIST} where writing to
   * Under Storage will be skipped and data may be lost when evicted from Alluxio storage.
   */
  @ThreadSafe
  public enum UnderStorageType {
    /** Persist data to the under storage synchronously. */
    SYNC_PERSIST(1),
  
    /** Do not persist data to the under storage. */
    NO_PERSIST(2),
  
    /** Persist data to the under storage asynchronously. */
    ASYNC_PERSIST(3),
    ;
  
    private final int mValue;
  
    UnderStorageType(int value) {
      mValue = value;
    }
  
    /**
     * @return whether the data should be persisted to the under storage synchronously
     */
    public boolean isSyncPersist() {
      return mValue == SYNC_PERSIST.mValue;
    }
  
    /**
     * @return whether the data should be persisted to the under storage asynchronously
     */
    public boolean isAsyncPersist() {
      return mValue == ASYNC_PERSIST.mValue;
    }
  }
  