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
019package org.apache.hadoop.mapreduce.lib.db;
020
021import java.util.Date;
022
023import org.apache.hadoop.classification.InterfaceAudience;
024import org.apache.hadoop.classification.InterfaceStability;
025
026/**
027 * Implement DBSplitter over date/time values returned by an Oracle db.
028 * Make use of logic from DateSplitter, since this just needs to use
029 * some Oracle-specific functions on the formatting end when generating
030 * InputSplits.
031 */
032@InterfaceAudience.Public
033@InterfaceStability.Evolving
034public class OracleDateSplitter extends DateSplitter {
035
036  @SuppressWarnings("unchecked")
037  @Override
038  protected String dateToString(Date d) {
039    // Oracle Data objects are always actually Timestamps
040    return "TO_TIMESTAMP('" + d.toString() + "', 'YYYY-MM-DD HH24:MI:SS.FF')";
041  }
042}