001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements. See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership. The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License. You may obtain a copy of the License at
009 *
010 * http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018
019 package org.apache.hadoop.mapreduce.lib.db;
020
021 import java.sql.Connection;
022 import java.sql.ResultSet;
023 import java.sql.PreparedStatement;
024 import java.sql.SQLException;
025
026 import org.apache.hadoop.classification.InterfaceAudience;
027 import org.apache.hadoop.classification.InterfaceStability;
028 import org.apache.hadoop.conf.Configuration;
029
030 /**
031 * A RecordReader that reads records from a Oracle table via DataDrivenDBRecordReader
032 */
033 @InterfaceAudience.Public
034 @InterfaceStability.Evolving
035 public class OracleDataDrivenDBRecordReader<T extends DBWritable>
036 extends DataDrivenDBRecordReader<T> {
037
038 public OracleDataDrivenDBRecordReader(DBInputFormat.DBInputSplit split,
039 Class<T> inputClass, Configuration conf, Connection conn,
040 DBConfiguration dbConfig, String cond, String [] fields,
041 String table) throws SQLException {
042
043 super(split, inputClass, conf, conn, dbConfig, cond, fields, table,
044 "ORACLE");
045
046 // Must initialize the tz used by the connection for Oracle.
047 OracleDBRecordReader.setSessionTimeZone(conf, conn);
048 }
049 }