/*
 * Copyright 2009-2016 DigitalGlobe, Inc.
 *
 * Licensed 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.mrgeo.data.vector;

import org.apache.hadoop.mapreduce.InputSplit;
import org.apache.hadoop.mapreduce.RecordReader;
import org.apache.hadoop.mapreduce.TaskAttemptContext;
import org.mrgeo.data.DataProviderFactory;
import org.mrgeo.geometry.Geometry;

import java.io.IOException;

public class VectorRecordReader extends RecordReader<FeatureIdWritable, Geometry>
{
  private RecordReader<FeatureIdWritable, Geometry> delegate;

  @Override
  public void initialize(InputSplit inputSplit, TaskAttemptContext context) throws IOException, InterruptedException
  {
    VectorInputSplit vis = (VectorInputSplit)inputSplit;
    VectorDataProvider dp = DataProviderFactory.getVectorDataProvider(vis.getVectorName(),
                                                                      DataProviderFactory.AccessMode.READ,
                                                                      context.getConfiguration());
    delegate = dp.getRecordReader();
    delegate.initialize(vis.getWrappedInputSplit(), context);
  }

  @Override
  public boolean nextKeyValue() throws IOException, InterruptedException
  {
    return delegate.nextKeyValue();
  }

  @Override
  public FeatureIdWritable getCurrentKey() throws IOException, InterruptedException
  {
    return delegate.getCurrentKey();
  }

  @Override
  public Geometry getCurrentValue() throws IOException, InterruptedException
  {
    return delegate.getCurrentValue();
  }

  @Override
  public float getProgress() throws IOException, InterruptedException
  {
    return delegate.getProgress();
  }

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