jp.co.yahoo.yosegi.reader.WrapReader Maven / Gradle / Ivy

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/**
 * 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 jp.co.yahoo.yosegi.reader;

import jp.co.yahoo.yosegi.binary.ColumnBinary;
import jp.co.yahoo.yosegi.inmemory.IRawConverter;

import java.io.IOException;
import java.util.List;

public class WrapReader implements AutoCloseable {

  private final YosegiReader reader;
  private final IRawConverter converter;

  public WrapReader( final YosegiReader reader , final IRawConverter converter ) {
    this.reader = reader;
    this.converter = converter;
  }

  public boolean hasNext() throws IOException {
    return reader.hasNext();
  }

  /**
   * Read the next data.
   */
  public T next() throws IOException {
    List raw = reader.nextRaw();
    int loadSize = reader.getCurrentSpreadSize();
    return converter.convert( raw , loadSize );
  }

  public long getReadBytes() {
    return reader.getReadBytes();
  }

  @Override
  public void close() throws IOException {
    reader.close();
  }

}