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.reader.value;
  
  import java.io.IOException;
  
  import org.apache.asterix.column.bytes.decoder.ParquetDeltaByteArrayReader;
  import org.apache.asterix.column.bytes.stream.in.AbstractBytesInputStream;
  import org.apache.asterix.om.types.ATypeTag;
  import org.apache.hyracks.data.std.api.IValueReference;
  import org.apache.hyracks.data.std.primitive.UTF8StringPointable;
  
  public final class StringValueReader extends AbstractValueReader {
      private final ParquetDeltaByteArrayReader stringReader;
      private IValueReference nextValue;
  
      public StringValueReader() {
          stringReader = new ParquetDeltaByteArrayReader(true);
      }
  
      @Override
      public void init(AbstractBytesInputStream in, int tupleCount) throws IOException {
          stringReader.initFromPage(in);
      }
  
      @Override
      public void nextValue() {
          nextValue = stringReader.readBytes();
      }
  
      @Override
      public IValueReference getBytes() {
          return nextValue;
      }
  
      @Override
      public ATypeTag getTypeTag() {
          return ATypeTag.STRING;
      }
  
      @Override
      public int compareTo(AbstractValueReader o) {
          return UTF8StringPointable.compare(nextValue, o.getBytes());
      }
  }
  