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.io.ByteArrayOutputStream;
  import java.io.DataOutputStream;
  import java.io.IOException;
  import java.math.BigDecimal;
  
  import org.apache.carbondata.core.datastore.page.encoding.ColumnPageEncoderMeta;
  import org.apache.carbondata.core.metadata.datatype.DataType;
  import org.apache.carbondata.core.metadata.datatype.DataTypes;
  import org.apache.carbondata.core.util.ByteUtil;
  
  /**
   * Represent a columnar data in one page for one column.
   */
  public class SafeFixLengthColumnPage extends ColumnPage {
  
    // Only one of following fields will be used
    private byte[] byteData;
    private short[] shortData;
    private int[] intData;
    private long[] longData;
    private float[] floatData;
    private double[] doubleData;
    private byte[] shortIntData;
    private byte[][] fixedLengthData;
    private int totalLength;
  
    // total number of entries in array
    private int arrayElementCount = 0;
  
    SafeFixLengthColumnPage(ColumnPageEncoderMeta columnPageEncoderMeta, int pageSize) {
      super(columnPageEncoderMeta, pageSize);
    }
  
    /**
     * Set byte value at rowId
     */
    @Override
    public void putByte(int rowId, byte value) {
      ensureArraySize(rowId, DataTypes.BYTE);
      byteData[rowId] = value;
      arrayElementCount++;
      totalLength += DataTypes.BYTE.getSizeInBytes();
    }
  
    /**
     * Set short value at rowId
     */
    @Override
    public void putShort(int rowId, short value) {
      ensureArraySize(rowId, DataTypes.SHORT);
      shortData[rowId] = value;
      arrayElementCount++;
      totalLength += DataTypes.SHORT.getSizeInBytes();
    }
  
    /**
     * Set integer value at rowId
     */
    @Override
    public void putInt(int rowId, int value) {
      ensureArraySize(rowId, DataTypes.INT);
      intData[rowId] = value;
      arrayElementCount++;
      totalLength += DataTypes.INT.getSizeInBytes();
    }
  
    /**
     * Set long value at rowId
     */
    @Override
    public void putLong(int rowId, long value) {
      ensureArraySize(rowId, DataTypes.LONG);
      longData[rowId] = value;
      arrayElementCount++;
      totalLength += DataTypes.LONG.getSizeInBytes();
    }
  
    /**
     * Set double value at rowId
     */
    @Override
    public void putDouble(int rowId, double value) {
      ensureArraySize(rowId, DataTypes.DOUBLE);
      doubleData[rowId] = value;
      arrayElementCount++;
      totalLength += DataTypes.DOUBLE.getSizeInBytes();
    }
  
    /**
     * Set float value at rowId
     */
    @Override
    public void putFloat(int rowId, float value) {
      ensureArraySize(rowId, DataTypes.FLOAT);
      floatData[rowId] = value;
      arrayElementCount++;
      totalLength += DataTypes.FLOAT.getSizeInBytes();
    }
  
    /**
     * Set string value at rowId
     */
    @Override
    public void putBytes(int rowId, byte[] bytes) {
      ensureArraySize(rowId, DataTypes.BYTE_ARRAY);
      this.fixedLengthData[rowId] = bytes;
      arrayElementCount++;
      totalLength += bytes.length;
    }
  
    @Override
    public void putShortInt(int rowId, int value) {
      ensureArraySize(rowId, DataTypes.SHORT_INT);
      byte[] converted = ByteUtil.to3Bytes(value);
      System.arraycopy(converted, 0, shortIntData, rowId * 3, 3);
      arrayElementCount++;
      totalLength += DataTypes.SHORT_INT.getSizeInBytes();
    }
  
    @Override
    public void putBytes(int rowId, byte[] bytes, int offset, int length) {
      throw new UnsupportedOperationException(
          "invalid data type: " + columnPageEncoderMeta.getStoreDataType());
    }
  
    @Override
    public void putDecimal(int rowId, BigDecimal decimal) {
      throw new UnsupportedOperationException(
          "invalid data type: " + columnPageEncoderMeta.getStoreDataType());
    }
  
    @Override
    public byte[] getDecimalPage() {
      throw new UnsupportedOperationException(
          "invalid data type: " + columnPageEncoderMeta.getStoreDataType());
    }
  
    /**
     * Get byte value at rowId
     */
    @Override
    public byte getByte(int rowId) {
      return byteData[rowId];
    }
  
    /**
     * Get short value at rowId
     */
    @Override
    public short getShort(int rowId) {
      return shortData[rowId];
    }
  
    /**
     * Get short int value at rowId
     */
    @Override
    public int getShortInt(int rowId) {
      return ByteUtil.valueOf3Bytes(shortIntData, rowId * 3);
    }
  
    /**
     * Get int value at rowId
     */
    @Override
    public int getInt(int rowId) {
      return intData[rowId];
    }
  
    /**
     * Get long value at rowId
     */
    @Override
    public long getLong(int rowId) {
      return longData[rowId];
    }
  
    /**
     * Get float value at rowId
     */
    @Override
    public float getFloat(int rowId) {
      return floatData[rowId];
    }
  
    /**
     * Get double value at rowId
     */
    @Override
    public double getDouble(int rowId) {
      return doubleData[rowId];
    }
  
    @Override
    public BigDecimal getDecimal(int rowId) {
      throw new UnsupportedOperationException(
          "invalid data type: " + columnPageEncoderMeta.getStoreDataType());
    }
  
    @Override
    public byte[] getBytes(int rowId) {
      return this.fixedLengthData[rowId];
    }
  
    /**
     * Get byte value page
     */
    @Override
    public byte[] getBytePage() {
      return byteData;
    }
  
    /**
     * Get short value page
     */
    @Override
    public short[] getShortPage() {
      return shortData;
    }
  
    /**
     * Get short value page
     */
    @Override
    public byte[] getShortIntPage() {
      return shortIntData;
    }
  
    /**
     * Get int value page
     */
    @Override
    public int[] getIntPage() {
      return intData;
    }
  
    /**
     * Get long value page
     */
    @Override
    public long[] getLongPage() {
      return longData;
    }
  
    /**
     * Get float value page
     */
    @Override
    public float[] getFloatPage() {
      return floatData;
    }
  
    /**
     * Get double value page
     */
    @Override
    public double[] getDoublePage() {
      return doubleData;
    }
  
    /**
     * Get string page
     */
    @Override
    public byte[][] getByteArrayPage() {
      byte[][] data = new byte[arrayElementCount][];
      if (arrayElementCount > 0) {
        System.arraycopy(fixedLengthData, 0, data, 0, arrayElementCount);
      }
      return data;
    }
  
    @Override
    public byte[] getLVFlattenedBytePage() {
      throw new UnsupportedOperationException(
          "invalid data type: " + columnPageEncoderMeta.getStoreDataType());
    }
  
    @Override
    public byte[] getComplexChildrenLVFlattenedBytePage(DataType dataType) throws IOException {
      ByteArrayOutputStream stream = new ByteArrayOutputStream();
      DataOutputStream out = new DataOutputStream(stream);
      for (int i = 0; i < arrayElementCount; i++) {
        out.write(fixedLengthData[i]);
      }
      return stream.toByteArray();
    }
  
    @Override
    public byte[] getComplexParentFlattenedBytePage() {
      throw new UnsupportedOperationException("internal error");
    }
  
    /**
     * Set byte values to page
     */
    @Override
    public void setBytePage(byte[] byteData) {
      this.byteData = byteData;
    }
  
    /**
     * Set short values to page
     */
    @Override
    public void setShortPage(short[] shortData) {
      this.shortData = shortData;
    }
  
    /**
     * Set short values to page
     */
    @Override
    public void setShortIntPage(byte[] shortIntData) {
      this.shortIntData = shortIntData;
    }
  
    /**
     * Set int values to page
     */
    @Override
    public void setIntPage(int[] intData) {
      this.intData = intData;
    }
  
    /**
     * Set long values to page
     */
    @Override
    public void setLongPage(long[] longData) {
      this.longData = longData;
    }
  
    /**
     * Set float values to page
     */
    @Override
    public void setFloatPage(float[] floatData) {
      this.floatData = floatData;
    }
  
    /**
     * Set double value to page
     */
    @Override
    public void setDoublePage(double[] doubleData) {
      this.doubleData = doubleData;
    }
  
    /**
     * Set decimal values to page
     */
    @Override
    public void setByteArrayPage(byte[][] byteArray) {
      throw new UnsupportedOperationException(
          "invalid data type: " + columnPageEncoderMeta.getStoreDataType());
    }
  
    @Override
    public void freeMemory() {
      byteData = null;
      shortData = null;
      intData = null;
      longData = null;
      floatData = null;
      doubleData = null;
      shortIntData = null;
      fixedLengthData = null;
    }
  
    /**
     * apply encoding to page data
     * @param codec type of transformation
     */
    @Override
    public void convertValue(ColumnPageValueConverter codec) {
      if (columnPageEncoderMeta.getStoreDataType() == DataTypes.BYTE) {
        for (int i = 0; i < arrayElementCount; i++) {
          codec.encode(i, byteData[i]);
        }
      } else if (columnPageEncoderMeta.getStoreDataType() == DataTypes.SHORT) {
        for (int i = 0; i < arrayElementCount; i++) {
          codec.encode(i, shortData[i]);
        }
      } else if (columnPageEncoderMeta.getStoreDataType() == DataTypes.INT) {
        for (int i = 0; i < arrayElementCount; i++) {
          codec.encode(i, intData[i]);
        }
      } else if (columnPageEncoderMeta.getStoreDataType() == DataTypes.LONG) {
        for (int i = 0; i < arrayElementCount; i++) {
          codec.encode(i, longData[i]);
        }
      } else if (columnPageEncoderMeta.getStoreDataType() == DataTypes.FLOAT) {
        for (int i = 0; i < arrayElementCount; i++) {
          codec.encode(i, floatData[i]);
        }
      } else if (columnPageEncoderMeta.getStoreDataType() == DataTypes.DOUBLE) {
        for (int i = 0; i < arrayElementCount; i++) {
          codec.encode(i, doubleData[i]);
        }
      } else {
        throw new UnsupportedOperationException("not support value conversion on "
            + columnPageEncoderMeta.getStoreDataType() + " page");
      }
    }
  
    private void ensureArraySize(int requestSize, DataType dataType) {
      if (dataType == DataTypes.BYTE) {
        if (requestSize >= byteData.length) {
          byte[] newArray = new byte[arrayElementCount * 2];
          System.arraycopy(byteData, 0, newArray, 0, arrayElementCount);
          byteData = newArray;
        }
      } else if (dataType == DataTypes.SHORT) {
        if (requestSize >= shortData.length) {
          short[] newArray = new short[arrayElementCount * 2];
          System.arraycopy(shortData, 0, newArray, 0, arrayElementCount);
          shortData = newArray;
        }
      } else if (dataType == DataTypes.SHORT_INT) {
        if (requestSize >= shortIntData.length / 3) {
          byte[] newArray = new byte[arrayElementCount * 6];
          System.arraycopy(shortIntData, 0, newArray, 0, arrayElementCount * 3);
          shortIntData = newArray;
        }
      } else if (dataType == DataTypes.INT) {
        if (requestSize >= intData.length) {
          int[] newArray = new int[arrayElementCount * 2];
          System.arraycopy(intData, 0, newArray, 0, arrayElementCount);
          intData = newArray;
        }
      } else if (dataType == DataTypes.LONG) {
        if (requestSize >= longData.length) {
          long[] newArray = new long[arrayElementCount * 2];
          System.arraycopy(longData, 0, newArray, 0, arrayElementCount);
          longData = newArray;
        }
      } else if (dataType == DataTypes.FLOAT) {
        if (requestSize >= floatData.length) {
          float[] newArray = new float[arrayElementCount * 2];
          System.arraycopy(floatData, 0, newArray, 0, arrayElementCount);
          floatData = newArray;
        }
      } else if (dataType == DataTypes.DOUBLE) {
        if (requestSize >= doubleData.length) {
          double[] newArray = new double[arrayElementCount * 2];
          System.arraycopy(doubleData, 0, newArray, 0, arrayElementCount);
          doubleData = newArray;
        }
      } else if (dataType == DataTypes.BYTE_ARRAY) {
        if (fixedLengthData == null) {
          fixedLengthData = new byte[pageSize][];
        }
        if (requestSize >= fixedLengthData.length) {
          byte[][] newArray = new byte[arrayElementCount * 2][];
          int index = 0;
          for (byte[] data : fixedLengthData) {
            newArray[index++] = data;
          }
          fixedLengthData = newArray;
        }
      } else {
        throw new UnsupportedOperationException(
            "not support value conversion on " + dataType + " page");
      }
    }
  
    public int getActualRowCount() {
      return arrayElementCount;
    }
  
    @Override
    public long getPageLengthInBytes() {
      return totalLength;
    }
  }
  