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.carbondata.core.index.dev;
  
  import java.io.DataInputStream;
  import java.io.DataOutputStream;
  import java.io.IOException;
  
  import org.apache.carbondata.common.annotations.InterfaceAudience;
  import org.apache.carbondata.core.datastore.impl.FileFactory;
  import org.apache.carbondata.core.index.dev.fgindex.FineGrainBlocklet;
  
  /**
   * A serializer/deserializer for {@link FineGrainBlocklet}, it is used after prune the data
   * by {@link org.apache.carbondata.core.index.dev.fgindex.FineGrainIndex}
   */
  @InterfaceAudience.Internal
  public class BlockletSerializer {
  
    /**
     * Serialize and write blocklet to the file.
     * @param grainBlocklet
     * @param writePath
     * @throws IOException
     */
    public void serializeBlocklet(FineGrainBlocklet grainBlocklet, String writePath)
        throws IOException {
      try (DataOutputStream dataOutputStream = FileFactory.getDataOutputStream(writePath)) {
        grainBlocklet.write(dataOutputStream);
      }
    }
  
    /**
     * Read data from filepath and deserialize blocklet.
     * @param writePath
     * @return
     * @throws IOException
     */
    public FineGrainBlocklet deserializeBlocklet(String writePath) throws IOException {
      DataInputStream inputStream =
          FileFactory.getDataInputStream(writePath);
      FineGrainBlocklet blocklet = new FineGrainBlocklet();
      try {
        blocklet.readFields(inputStream);
      } finally {
        inputStream.close();
      }
      return blocklet;
    }
  
  }
  