/**
* 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.sqoop.mapreduce.db.netezza;
import java.io.IOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.util.ReflectionUtils;
import org.apache.hive.hcatalog.data.HCatRecord;
import org.apache.sqoop.config.ConfigurationHelper;
import org.apache.sqoop.lib.RecordParser;
import org.apache.sqoop.lib.SqoopRecord;
import org.apache.sqoop.mapreduce.hcat.SqoopHCatImportHelper;
/**
* Netezza import mapper using external tables for HCat integration.
*/
public class NetezzaExternalTableHCatImportMapper
extends NetezzaExternalTableImportMapper<NullWritable, HCatRecord> {
private SqoopHCatImportHelper helper;
private SqoopRecord sqoopRecord;
@Override
protected void setup(Context context)
throws IOException, InterruptedException {
Configuration conf = context.getConfiguration();
helper = new SqoopHCatImportHelper(conf);
String recordClassName = conf.get(ConfigurationHelper
.getDbInputClassProperty());
if (null == recordClassName) {
throw new IOException("DB Input class name is not set!");
}
try {
Class<?> cls = Class.forName(recordClassName, true,
Thread.currentThread().getContextClassLoader());
sqoopRecord = (SqoopRecord) ReflectionUtils.newInstance(cls, conf);
} catch (ClassNotFoundException cnfe) {
throw new IOException(cnfe);
}
if (null == sqoopRecord) {
throw new IOException("Could not instantiate object of type "
+ recordClassName);
}
}
@Override
protected void writeRecord(Text text, Context context)
throws IOException, InterruptedException {
try {
sqoopRecord.parse(text);
context.write(NullWritable.get(),
helper.convertToHCatRecord(sqoopRecord));
} catch (RecordParser.ParseError pe) {
throw new IOException("Exception parsing netezza import record", pe);
}
}
}