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.asterix.column.values.writer;
  
  import java.io.IOException;
  
  import org.apache.asterix.column.bytes.encoder.ParquetPlainFixedLengthValuesWriter;
  import org.apache.asterix.column.values.IColumnValuesReader;
  import org.apache.asterix.column.values.writer.filters.AbstractColumnFilterWriter;
  import org.apache.asterix.column.values.writer.filters.DoubleColumnFilterWriter;
  import org.apache.asterix.om.types.ATypeTag;
  import org.apache.commons.lang3.mutable.Mutable;
  import org.apache.hyracks.api.exceptions.HyracksDataException;
  import org.apache.hyracks.data.std.api.IValueReference;
  import org.apache.hyracks.data.std.primitive.DoublePointable;
  import org.apache.hyracks.data.std.primitive.FloatPointable;
  import org.apache.hyracks.data.std.primitive.IntegerPointable;
  import org.apache.hyracks.data.std.primitive.LongPointable;
  import org.apache.hyracks.data.std.primitive.ShortPointable;
  import org.apache.hyracks.storage.am.lsm.btree.column.api.IColumnWriteMultiPageOp;
  import org.apache.parquet.bytes.BytesInput;
  
  public final class DoubleColumnValuesWriter extends AbstractColumnValuesWriter {
      private final ParquetPlainFixedLengthValuesWriter doubleWriter;
  
      public DoubleColumnValuesWriter(Mutable<IColumnWriteMultiPageOp> multiPageOpRef, int columnIndex, int level,
              boolean collection, boolean filtered) {
          super(columnIndex, level, collection, filtered);
          doubleWriter = new ParquetPlainFixedLengthValuesWriter(multiPageOpRef);
      }
  
      @Override
      protected void addValue(ATypeTag tag, IValueReference value) throws IOException {
          final double normalizedDouble = getValue(tag, value.getByteArray(), value.getStartOffset());
          doubleWriter.writeDouble(normalizedDouble);
          filterWriter.addDouble(normalizedDouble);
      }
  
      private double getValue(ATypeTag typeTag, byte[] byteArray, int offset) {
          switch (typeTag) {
              case TINYINT:
                  return byteArray[offset];
              case SMALLINT:
                  return ShortPointable.getShort(byteArray, offset);
              case INTEGER:
                  return IntegerPointable.getInteger(byteArray, offset);
              case BIGINT:
                  return LongPointable.getLong(byteArray, offset);
              case FLOAT:
                  return FloatPointable.getFloat(byteArray, offset);
              case DOUBLE:
                  return DoublePointable.getDouble(byteArray, offset);
              default:
                  throw new IllegalAccessError(typeTag + "is not of floating type");
          }
      }
  
      @Override
      protected void resetValues() throws HyracksDataException {
          doubleWriter.reset();
      }
  
      @Override
      protected BytesInput getBytes() throws IOException {
          return doubleWriter.getBytes();
      }
  
      @Override
      protected int getValuesEstimatedSize() {
          return doubleWriter.getEstimatedSize();
      }
  
      @Override
      protected int calculateEstimatedSize(int length) {
          return doubleWriter.calculateEstimatedSize(length);
      }
  
      @Override
      protected int getValuesAllocatedSize() {
          return doubleWriter.getAllocatedSize();
      }
  
      @Override
      protected void addValue(IColumnValuesReader reader) throws IOException {
          double value = reader.getDouble();
          doubleWriter.writeDouble(value);
          filterWriter.addDouble(value);
      }
  
      @Override
      protected AbstractColumnFilterWriter createFilter() {
          return new DoubleColumnFilterWriter();
      }
  
      @Override
      protected void closeValues() {
          doubleWriter.close();
      }
  
      @Override
      protected ATypeTag getTypeTag() {
          return ATypeTag.DOUBLE;
      }
  
      @Override
      public int getRequiredTemporaryBuffersCount() {
          return requiredTemporaryBuffers(filtered);
      }
  
      public static int requiredTemporaryBuffers(boolean filtered) {
          return ParquetPlainFixedLengthValuesWriter.REQUIRED_TEMPORARY_BUFFERS;
      }
  }
  