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.AbstractParquetValuesWriter;
  import org.apache.asterix.column.bytes.encoder.ParquetDeltaByteArrayWriter;
  import org.apache.asterix.column.bytes.encoder.ParquetPlainVariableLengthValuesWriter;
  import org.apache.asterix.column.values.IColumnValuesReader;
  import org.apache.asterix.column.values.writer.filters.AbstractColumnFilterWriter;
  import org.apache.asterix.column.values.writer.filters.StringColumnFilterWriter;
  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.storage.am.lsm.btree.column.api.IColumnWriteMultiPageOp;
  import org.apache.parquet.bytes.BytesInput;
  
  public class StringColumnValuesWriter extends AbstractColumnValuesWriter {
      private final AbstractParquetValuesWriter stringWriter;
      private final boolean skipLengthBytes;
  
      public StringColumnValuesWriter(Mutable<IColumnWriteMultiPageOp> multiPageOpRef, int columnIndex, int level,
              boolean collection, boolean filtered) {
          this(columnIndex, level, collection, filtered, true, filtered ? new ParquetDeltaByteArrayWriter(multiPageOpRef)
                  : new ParquetPlainVariableLengthValuesWriter(multiPageOpRef));
      }
  
      protected StringColumnValuesWriter(int columnIndex, int level, boolean collection, boolean filtered,
              boolean skipLengthBytes, AbstractParquetValuesWriter stringWriter) {
          super(columnIndex, level, collection, filtered);
          this.stringWriter = stringWriter;
          this.skipLengthBytes = skipLengthBytes;
      }
  
      @Override
      protected final void addValue(ATypeTag tag, IValueReference value) throws IOException {
          stringWriter.writeBytes(value, skipLengthBytes);
          filterWriter.addValue(value);
      }
  
      @Override
      protected final void resetValues() throws HyracksDataException {
          stringWriter.reset();
      }
  
      @Override
      protected final BytesInput getBytes() throws IOException {
          return stringWriter.getBytes();
      }
  
      @Override
      protected final int getValuesEstimatedSize() {
          return stringWriter.getEstimatedSize();
      }
  
      @Override
      protected int calculateEstimatedSize(int length) {
          return stringWriter.calculateEstimatedSize(length);
      }
  
      @Override
      protected final int getValuesAllocatedSize() {
          return stringWriter.getAllocatedSize();
      }
  
      @Override
      protected final void addValue(IColumnValuesReader reader) throws IOException {
          IValueReference value = reader.getBytes();
          stringWriter.writeBytes(value, skipLengthBytes);
          filterWriter.addValue(value);
      }
  
      @Override
      protected AbstractColumnFilterWriter createFilter() {
          return new StringColumnFilterWriter();
      }
  
      @Override
      protected final void closeValues() {
          stringWriter.close();
      }
  
      @Override
      protected ATypeTag getTypeTag() {
          return ATypeTag.STRING;
      }
  
      @Override
      public int getRequiredTemporaryBuffersCount() {
          return requiredTemporaryBuffers(filtered);
      }
  
      public static int requiredTemporaryBuffers(boolean filtered) {
          if (filtered) {
              return ParquetDeltaByteArrayWriter.REQUIRED_TEMPORARY_BUFFERS;
          } else {
              return ParquetPlainVariableLengthValuesWriter.REQUIRED_TEMPORARY_BUFFERS;
          }
      }
  }
  