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.datastore.compression;
  
  import java.io.IOException;
  import java.nio.ByteBuffer;
  import java.nio.ByteOrder;
  import java.nio.DoubleBuffer;
  import java.nio.FloatBuffer;
  import java.nio.IntBuffer;
  import java.nio.LongBuffer;
  import java.nio.ShortBuffer;
  
  import org.apache.carbondata.core.memory.UnsafeMemoryManager;
  import org.apache.carbondata.core.util.ByteUtil;
  
  public abstract class AbstractCompressor implements Compressor {
  
    @Override
    public ByteBuffer compressShort(short[] unCompInput) {
      ByteBuffer unCompBuffer = ByteBuffer.allocateDirect(unCompInput.length * ByteUtil.SIZEOF_SHORT);
      try {
        unCompBuffer.order(ByteOrder.LITTLE_ENDIAN).asShortBuffer().put(unCompInput);
        unCompBuffer.position(unCompBuffer.limit());
        return compressByte(unCompBuffer);
      } finally {
        UnsafeMemoryManager.destroyDirectByteBuffer(unCompBuffer);
      }
    }
  
    @Override
    public short[] unCompressShort(byte[] compInput, int offset, int length) {
      byte[] unCompArray = unCompressByte(compInput, offset, length);
      ShortBuffer unCompBuffer =
          ByteBuffer.wrap(unCompArray).order(ByteOrder.LITTLE_ENDIAN).asShortBuffer();
      short[] shorts = new short[unCompArray.length / ByteUtil.SIZEOF_SHORT];
      unCompBuffer.get(shorts);
      return shorts;
    }
  
    @Override
    public ByteBuffer compressInt(int[] unCompInput) {
      ByteBuffer unCompBuffer = ByteBuffer.allocateDirect(unCompInput.length * ByteUtil.SIZEOF_INT);
      try {
        unCompBuffer.order(ByteOrder.LITTLE_ENDIAN).asIntBuffer().put(unCompInput);
        unCompBuffer.position(unCompBuffer.limit());
        return compressByte(unCompBuffer);
      } finally {
        UnsafeMemoryManager.destroyDirectByteBuffer(unCompBuffer);
      }
    }
  
    @Override
    public int[] unCompressInt(byte[] compInput, int offset, int length) {
      byte[] unCompArray = unCompressByte(compInput, offset, length);
      IntBuffer unCompBuffer =
          ByteBuffer.wrap(unCompArray).order(ByteOrder.LITTLE_ENDIAN).asIntBuffer();
      int[] ints = new int[unCompArray.length / ByteUtil.SIZEOF_INT];
      unCompBuffer.get(ints);
      return ints;
    }
  
    @Override
    public ByteBuffer compressLong(long[] unCompInput) {
      ByteBuffer unCompBuffer = ByteBuffer.allocateDirect(unCompInput.length * ByteUtil.SIZEOF_LONG);
      try {
        unCompBuffer.order(ByteOrder.LITTLE_ENDIAN).asLongBuffer().put(unCompInput);
        unCompBuffer.position(unCompBuffer.limit());
        return compressByte(unCompBuffer);
      } finally {
        UnsafeMemoryManager.destroyDirectByteBuffer(unCompBuffer);
      }
    }
  
    @Override
    public long[] unCompressLong(byte[] compInput, int offset, int length) {
      byte[] unCompArray = unCompressByte(compInput, offset, length);
      LongBuffer unCompBuffer =
          ByteBuffer.wrap(unCompArray).order(ByteOrder.LITTLE_ENDIAN).asLongBuffer();
      long[] longs = new long[unCompArray.length / ByteUtil.SIZEOF_LONG];
      unCompBuffer.get(longs);
      return longs;
    }
  
    @Override
    public ByteBuffer compressFloat(float[] unCompInput) {
      ByteBuffer unCompBuffer = ByteBuffer.allocateDirect(unCompInput.length * ByteUtil.SIZEOF_FLOAT);
      try {
        unCompBuffer.order(ByteOrder.LITTLE_ENDIAN).asFloatBuffer().put(unCompInput);
        unCompBuffer.position(unCompBuffer.limit());
        return compressByte(unCompBuffer);
      } finally {
        UnsafeMemoryManager.destroyDirectByteBuffer(unCompBuffer);
      }
    }
  
    @Override
    public float[] unCompressFloat(byte[] compInput, int offset, int length) {
      byte[] unCompArray = unCompressByte(compInput, offset, length);
      FloatBuffer unCompBuffer =
          ByteBuffer.wrap(unCompArray).order(ByteOrder.LITTLE_ENDIAN).asFloatBuffer();
      float[] floats = new float[unCompArray.length / ByteUtil.SIZEOF_FLOAT];
      unCompBuffer.get(floats);
      return floats;
    }
  
    @Override
    public ByteBuffer compressDouble(double[] unCompInput) {
      ByteBuffer unCompBuffer =
          ByteBuffer.allocateDirect(unCompInput.length * ByteUtil.SIZEOF_DOUBLE);
      try {
        unCompBuffer.order(ByteOrder.LITTLE_ENDIAN).asDoubleBuffer().put(unCompInput);
        unCompBuffer.position(unCompBuffer.limit());
        return compressByte(unCompBuffer);
      } finally {
        UnsafeMemoryManager.destroyDirectByteBuffer(unCompBuffer);
      }
    }
  
    @Override
    public double[] unCompressDouble(byte[] compInput, int offset, int length) {
      byte[] unCompArray = unCompressByte(compInput, offset, length);
      DoubleBuffer unCompBuffer =
          ByteBuffer.wrap(unCompArray).order(ByteOrder.LITTLE_ENDIAN).asDoubleBuffer();
      double[] doubles = new double[unCompArray.length / ByteUtil.SIZEOF_DOUBLE];
      unCompBuffer.get(doubles);
      return doubles;
    }
  
    @Override
    public long rawCompress(long inputAddress, int inputSize, long outputAddress) throws IOException {
      throw new RuntimeException("Not implemented rawCompress for " + this.getName());
    }
  
    @Override
    public boolean supportReusableBuffer() {
      return false;
    }
  
    @Override
    public boolean supportUnsafe() {
      return false;
    }
  }
  