/*
* 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.pig.test.udf.storefunc;
import java.io.IOException;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.InputFormat;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.RecordReader;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.input.TextInputFormat;
import org.apache.pig.FileInputLoadFunc;
import org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigSplit;
import org.apache.pig.data.DefaultTupleFactory;
import org.apache.pig.data.Tuple;
// This is a loader for data produced by DumpStore.
// Line format: (field1, field2, ... fieldn)\n
public class DumpLoader extends FileInputLoadFunc {
protected RecordReader in = null;
@Override
public Tuple getNext() throws IOException {
try {
boolean notDone = in.nextKeyValue();
if (!notDone) {
return null;
}
Text value = (Text) in.getCurrentValue();
String line = value.toString();
Tuple t = DefaultTupleFactory.getInstance().newTuple();
String tmp = line.substring(1, line.length() - 2);
String[] fields = tmp.split(",");
int i;
for (i = 0; i < fields.length; i++) {
t.append(fields[i].trim());
}
return t;
} catch (InterruptedException e) {
throw new IOException(e);
}
}
@Override
public InputFormat getInputFormat() {
return new TextInputFormat();
}
@Override
public void prepareToRead(RecordReader reader, PigSplit split) {
in = reader;
}
@Override
public void setLocation(String location, Job job)
throws IOException {
FileInputFormat.setInputPaths(job, location);
}
}