/**
* 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.gora.query.impl;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import org.apache.gora.persistency.Persistent;
import org.apache.gora.query.Query;
import org.apache.hadoop.mapreduce.InputFormat;
import org.apache.hadoop.mapreduce.lib.input.FileSplit;
/**
* Keeps a {@link FileSplit} to represent the partition boundaries.
* FileSplitPartitionQuery is best used with existing {@link InputFormat}s.
*/
public class FileSplitPartitionQuery<K, T extends Persistent>
extends PartitionQueryImpl<K,T> {
private FileSplit split;
public FileSplitPartitionQuery() {
super();
}
public FileSplitPartitionQuery(Query<K, T> baseQuery, FileSplit split)
throws IOException {
super(baseQuery, split.getLocations());
this.split = split;
}
public FileSplit getSplit() {
return split;
}
public long getLength() {
return split.getLength();
}
public long getStart() {
return split.getStart();
}
@Override
public void write(DataOutput out) throws IOException {
super.write(out);
split.write(out);
}
@Override
public void readFields(DataInput in) throws IOException {
super.readFields(in);
if(split == null)
split = new FileSplit(null, 0, 0, null); //change to new FileSplit() once hadoop-core.jar is updated
split.readFields(in);
}
@SuppressWarnings("rawtypes")
@Override
public boolean equals(Object obj) {
if(obj instanceof FileSplitPartitionQuery) {
return super.equals(obj) &&
this.split.equals(((FileSplitPartitionQuery)obj).split);
}
return false;
}
}