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.wire;
  
  import alluxio.annotation.PublicApi;
  
  import com.google.common.base.MoreObjects;
  import com.google.common.base.Objects;
  import com.google.common.base.Preconditions;
  
  import java.io.Serializable;
  import java.util.ArrayList;
  import java.util.List;
  import javax.annotation.concurrent.NotThreadSafe;
  
  /**
   * The block information.
   */
  @PublicApi
  @NotThreadSafe
  public final class BlockInfo implements Serializable {
    private static final long serialVersionUID = 5646834366222004646L;
  
    private long mBlockId;
    private long mLength;
    private ArrayList<BlockLocation> mLocations = new ArrayList<>();
  
    /**
     * Creates a new instance of {@link BlockInfo}.
     */
    public BlockInfo() {}
  
    /**
     * @return the block id
     */
    public long getBlockId() {
      return mBlockId;
    }
  
    /**
     * @return the block length
     */
    public long getLength() {
      return mLength;
    }
  
    /**
     * @return the block locations
     */
    public List<BlockLocation> getLocations() {
      return mLocations;
    }
  
    /**
     * @param blockId the block id to use
     * @return the block information
     */
    public BlockInfo setBlockId(long blockId) {
      mBlockId = blockId;
      return this;
    }
  
    /**
     * @param length the block length to use
     * @return the block information
     */
    public BlockInfo setLength(long length) {
      mLength = length;
      return this;
    }
  
    /**
     * @param locations the block locations to use
     * @return the block information
     */
    public BlockInfo setLocations(List<BlockLocation> locations) {
      mLocations = new ArrayList<>(Preconditions.checkNotNull(locations, "locations"));
      return this;
    }
  
    @Override
    public boolean equals(Object o) {
      if (this == o) {
        return true;
      }
      if (!(o instanceof BlockInfo)) {
        return false;
      }
      BlockInfo that = (BlockInfo) o;
      return mBlockId == that.mBlockId && mLength == that.mLength
          && mLocations.equals(that.mLocations);
    }
  
    @Override
    public int hashCode() {
      return Objects.hashCode(mBlockId, mLength, mLocations);
    }
  
    @Override
    public String toString() {
      return MoreObjects.toStringHelper(this).add("id", mBlockId).add("length", mLength)
          .add("locations", mLocations).toString();
    }
  }
  