com.cloudera.sqoop.mapreduce.MergeTextMapper.java Source code

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Here is the source code for com.cloudera.sqoop.mapreduce.MergeTextMapper.java

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/**
 * Licensed to Cloudera, Inc. under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  Cloudera, Inc. 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 com.cloudera.sqoop.mapreduce;

import java.io.IOException;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.util.ReflectionUtils;

import com.cloudera.sqoop.lib.RecordParser;
import com.cloudera.sqoop.lib.SqoopRecord;

/**
 * Mapper for the merge program which operates on text files that we need to
 * parse into SqoopRecord instances.
 */
public class MergeTextMapper extends MergeMapperBase<LongWritable, Text> {

    private SqoopRecord record;

    @Override
    protected void setup(Context c) throws IOException, InterruptedException {
        Configuration conf = c.getConfiguration();

        Class<? extends SqoopRecord> recordClass = (Class<? extends SqoopRecord>) conf
                .getClass(MergeJob.MERGE_SQOOP_RECORD_KEY, SqoopRecord.class);
        this.record = ReflectionUtils.newInstance(recordClass, conf);

        super.setup(c);
    }

    public void map(LongWritable key, Text val, Context c) throws IOException, InterruptedException {
        try {
            this.record.parse(val);
        } catch (RecordParser.ParseError pe) {
            throw new IOException(pe);
        }

        processRecord(this.record, c);
    }
}