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.page;
  
  import java.math.BigDecimal;
  
  import org.apache.carbondata.core.datastore.page.encoding.ColumnPageEncoderMeta;
  import org.apache.carbondata.core.memory.CarbonUnsafe;
  import org.apache.carbondata.core.memory.UnsafeMemoryManager;
  import org.apache.carbondata.core.metadata.datatype.DataTypes;
  import org.apache.carbondata.core.util.ByteUtil;
  
  /**
   * Represents a columnar data for decimal data type column for one page
   */
  public class UnsafeDecimalColumnPage extends DecimalColumnPage {
  
    UnsafeDecimalColumnPage(ColumnPageEncoderMeta columnPageEncoderMeta, int pageSize) {
      this(columnPageEncoderMeta, pageSize, (int) (pageSize * DEFAULT_ROW_SIZE * FACTOR));
    }
  
    UnsafeDecimalColumnPage(ColumnPageEncoderMeta columnPageEncoderMeta, int pageSize, int capacity) {
      super(columnPageEncoderMeta, pageSize);
      this.capacity = capacity;
      initMemory();
    }
  
    private void initMemory() {
      if (columnPageEncoderMeta.getStoreDataType() == DataTypes.BYTE ||
          columnPageEncoderMeta.getStoreDataType() == DataTypes.SHORT ||
          columnPageEncoderMeta.getStoreDataType() == DataTypes.INT ||
          columnPageEncoderMeta.getStoreDataType() == DataTypes.LONG) {
        int size = pageSize << columnPageEncoderMeta.getStoreDataType().getSizeBits();
        memoryBlock = UnsafeMemoryManager.allocateMemoryWithRetry(taskId, size);
      } else if (columnPageEncoderMeta.getStoreDataType() == DataTypes.SHORT_INT) {
        int size = pageSize * 3;
        memoryBlock = UnsafeMemoryManager.allocateMemoryWithRetry(taskId, size);
      } else if (DataTypes.isDecimal(columnPageEncoderMeta.getStoreDataType())) {
        memoryBlock = UnsafeMemoryManager.allocateMemoryWithRetry(taskId, capacity);
      } else if (columnPageEncoderMeta.getStoreDataType() == DataTypes.BYTE_ARRAY) {
        memoryBlock = UnsafeMemoryManager.allocateMemoryWithRetry(taskId, capacity);
      } else {
        throw new UnsupportedOperationException(
            "invalid data type: " + columnPageEncoderMeta.getStoreDataType());
      }
      baseAddress = memoryBlock.getBaseObject();
      baseOffset = memoryBlock.getBaseOffset();
    }
  
    @Override
    public void setBytePage(byte[] byteData) {
      CarbonUnsafe.getUnsafe()
          .copyMemory(byteData, CarbonUnsafe.BYTE_ARRAY_OFFSET, baseAddress, baseOffset,
              byteData.length << byteBits);
    }
  
    @Override
    public void setShortPage(short[] shortData) {
      CarbonUnsafe.getUnsafe()
          .copyMemory(shortData, CarbonUnsafe.SHORT_ARRAY_OFFSET, baseAddress, baseOffset,
              shortData.length << shortBits);
    }
  
    @Override
    public void setShortIntPage(byte[] shortIntData) {
      CarbonUnsafe.getUnsafe()
          .copyMemory(shortIntData, CarbonUnsafe.BYTE_ARRAY_OFFSET, baseAddress, baseOffset,
              shortIntData.length);
    }
  
    @Override
    public void setIntPage(int[] intData) {
      CarbonUnsafe.getUnsafe()
          .copyMemory(intData, CarbonUnsafe.INT_ARRAY_OFFSET, baseAddress, baseOffset,
              intData.length << intBits);
    }
  
    @Override
    public void setLongPage(long[] longData) {
      CarbonUnsafe.getUnsafe()
          .copyMemory(longData, CarbonUnsafe.LONG_ARRAY_OFFSET, baseAddress, baseOffset,
              longData.length << longBits);
    }
  
    @Override
    public void setByteArrayPage(byte[][] byteArray) {
      if (totalLength != 0) {
        throw new IllegalStateException("page is not empty");
      }
      for (int i = 0; i < byteArray.length; i++) {
        putBytes(i, byteArray[i]);
      }
    }
  
    @Override
    public void freeMemory() {
      if (memoryBlock != null) {
        UnsafeMemoryManager.INSTANCE.freeMemory(taskId, memoryBlock);
        memoryBlock = null;
        baseAddress = null;
        baseOffset = 0;
        super.freeMemory();
      }
    }
  
    @Override
    public void putByte(int rowId, byte value) {
      long offset = (long)rowId << byteBits;
      CarbonUnsafe.getUnsafe().putByte(baseAddress, baseOffset + offset, value);
    }
  
    @Override
    public void putShort(int rowId, short value) {
      long offset = (long)rowId << shortBits;
      CarbonUnsafe.getUnsafe().putShort(baseAddress, baseOffset + offset, value);
    }
  
    @Override
    public void putShortInt(int rowId, int value) {
      byte[] data = ByteUtil.to3Bytes(value);
      long offset = rowId * 3L;
      CarbonUnsafe.getUnsafe().putByte(baseAddress, baseOffset + offset, data[0]);
      CarbonUnsafe.getUnsafe().putByte(baseAddress, baseOffset + offset + 1, data[1]);
      CarbonUnsafe.getUnsafe().putByte(baseAddress, baseOffset + offset + 2, data[2]);
    }
  
    @Override
    public void putInt(int rowId, int value) {
      long offset = (long)rowId << intBits;
      CarbonUnsafe.getUnsafe().putInt(baseAddress, baseOffset + offset, value);
    }
  
    @Override
    public void putLong(int rowId, long value) {
      long offset = (long)rowId << longBits;
      CarbonUnsafe.getUnsafe().putLong(baseAddress, baseOffset + offset, value);
    }
  
    @Override
    public void putBytesAtRow(int rowId, byte[] bytes) {
      putBytes(rowId, bytes, 0, bytes.length);
    }
  
    @Override
    public void putBytes(int rowId, byte[] bytes, int offset, int length) {
      ensureMemory(length);
      CarbonUnsafe.getUnsafe().copyMemory(bytes, CarbonUnsafe.BYTE_ARRAY_OFFSET + offset, baseAddress,
          baseOffset + rowOffset.getInt(rowId), length);
    }
  
    @Override
    public void putDecimal(int rowId, BigDecimal decimal) {
      switch (decimalConverter.getDecimalConverterType()) {
        case DECIMAL_INT:
          putInt(rowId, (int) decimalConverter.convert(decimal));
          break;
        case DECIMAL_LONG:
          putLong(rowId, (long) decimalConverter.convert(decimal));
          break;
        default:
          putBytes(rowId, (byte[]) decimalConverter.convert(decimal));
      }
    }
  
    @Override
    public byte getByte(int rowId) {
      long offset = (long)rowId << byteBits;
      return CarbonUnsafe.getUnsafe().getByte(baseAddress, baseOffset + offset);
    }
  
    @Override
    public byte[] getBytes(int rowId) {
      int length = rowOffset.getInt(rowId + 1) - rowOffset.getInt(rowId);
      byte[] bytes = new byte[length];
      CarbonUnsafe.getUnsafe().copyMemory(baseAddress, baseOffset + rowOffset.getInt(rowId),
          bytes, CarbonUnsafe.BYTE_ARRAY_OFFSET, length);
      return bytes;
    }
  
    @Override
    public short getShort(int rowId) {
      long offset = (long) rowId << shortBits;
      return CarbonUnsafe.getUnsafe().getShort(baseAddress, baseOffset + offset);
    }
  
    @Override
    public int getShortInt(int rowId) {
      long offset = rowId * 3L;
      byte[] data = new byte[3];
      data[0] = CarbonUnsafe.getUnsafe().getByte(baseAddress, baseOffset + offset);
      data[1] = CarbonUnsafe.getUnsafe().getByte(baseAddress, baseOffset + offset + 1);
      data[2] = CarbonUnsafe.getUnsafe().getByte(baseAddress, baseOffset + offset + 2);
      return ByteUtil.valueOf3Bytes(data, 0);
    }
  
    @Override
    public int getInt(int rowId) {
      long offset = (long)rowId << intBits;
      return CarbonUnsafe.getUnsafe().getInt(baseAddress, baseOffset + offset);
    }
  
    @Override
    public long getLong(int rowId) {
      long offset = (long) rowId << longBits;
      return CarbonUnsafe.getUnsafe().getLong(baseAddress, baseOffset + offset);
    }
  
    @Override
    void copyBytes(int rowId, byte[] dest, int destOffset, int length) {
      CarbonUnsafe.getUnsafe().copyMemory(baseAddress, baseOffset + rowOffset.getInt(rowId), dest,
          CarbonUnsafe.BYTE_ARRAY_OFFSET + destOffset, length);
    }
  
    @Override
    public void convertValue(ColumnPageValueConverter codec) {
      convertValueForDecimalType(codec);
    }
  
    private void convertValueForDecimalType(ColumnPageValueConverter codec) {
      switch (decimalConverter.getDecimalConverterType()) {
        case DECIMAL_INT:
          for (int i = 0; i < pageSize; i++) {
            long offset = (long)i << intBits;
            codec.encode(i, CarbonUnsafe.getUnsafe().getInt(baseAddress, baseOffset + offset));
          }
          break;
        case DECIMAL_LONG:
          for (int i = 0; i < pageSize; i++) {
            long offset = (long)i << longBits;
            codec.encode(i, CarbonUnsafe.getUnsafe().getLong(baseAddress, baseOffset + offset));
          }
          break;
        default:
          throw new UnsupportedOperationException("not support value conversion on "
              + columnPageEncoderMeta.getStoreDataType() + " page");
      }
    }
  
  }
  