| /** |
| * 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; |
| |
| import java.io.IOException; |
| import java.sql.SQLException; |
| import java.sql.Types; |
| |
| import org.apache.hadoop.conf.Configurable; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.io.LongWritable; |
| import org.apache.hadoop.mapreduce.RecordReader; |
| import org.apache.sqoop.mapreduce.DBWritable; |
| |
| /** |
| * A InputFormat that reads input data from an SQL table in an Oracle db. |
| */ |
| public class OracleDataDrivenDBInputFormat<T extends DBWritable> |
| extends DataDrivenDBInputFormat<T> implements Configurable { |
| |
| /** |
| * @return the DBSplitter implementation to use to divide the table/query |
| * into InputSplits. |
| */ |
| @Override |
| protected DBSplitter getSplitter(int sqlDataType, long splitLimit) { |
| switch (sqlDataType) { |
| case Types.DATE: |
| case Types.TIME: |
| case Types.TIMESTAMP: |
| return new OracleDateSplitter(); |
| |
| default: |
| return super.getSplitter(sqlDataType, splitLimit); |
| } |
| } |
| |
| @Override |
| protected RecordReader<LongWritable, T> createDBRecordReader( |
| DBInputSplit split, Configuration conf) throws IOException { |
| |
| DBConfiguration dbConf = getDBConf(); |
| @SuppressWarnings("unchecked") |
| Class<T> inputClass = (Class<T>) (dbConf.getInputClass()); |
| |
| try { |
| // Use Oracle-specific db reader |
| return new OracleDataDrivenDBRecordReader<T>(split, inputClass, |
| conf, getConnection(), dbConf, dbConf.getInputConditions(), |
| dbConf.getInputFieldNames(), dbConf.getInputTableName()); |
| } catch (SQLException ex) { |
| throw new IOException(ex); |
| } |
| } |
| } |