/**
* 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.hadoop.mapred.lib.db;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.mapred.JobConf;
@InterfaceAudience.Public
@InterfaceStability.Stable
public class DBConfiguration extends
org.apache.hadoop.mapreduce.lib.db.DBConfiguration {
/** The JDBC Driver class name */
public static final String DRIVER_CLASS_PROPERTY =
org.apache.hadoop.mapreduce.lib.db.DBConfiguration.DRIVER_CLASS_PROPERTY;
/** JDBC Database access URL */
public static final String URL_PROPERTY =
org.apache.hadoop.mapreduce.lib.db.DBConfiguration.URL_PROPERTY;
/** User name to access the database */
public static final String USERNAME_PROPERTY =
org.apache.hadoop.mapreduce.lib.db.DBConfiguration.USERNAME_PROPERTY;
/** Password to access the database */
public static final String PASSWORD_PROPERTY =
org.apache.hadoop.mapreduce.lib.db.DBConfiguration.PASSWORD_PROPERTY;
/** Input table name */
public static final String INPUT_TABLE_NAME_PROPERTY = org.apache.hadoop.
mapreduce.lib.db.DBConfiguration.INPUT_TABLE_NAME_PROPERTY;
/** Field names in the Input table */
public static final String INPUT_FIELD_NAMES_PROPERTY = org.apache.hadoop.
mapreduce.lib.db.DBConfiguration.INPUT_FIELD_NAMES_PROPERTY;
/** WHERE clause in the input SELECT statement */
public static final String INPUT_CONDITIONS_PROPERTY = org.apache.hadoop.
mapreduce.lib.db.DBConfiguration.INPUT_CONDITIONS_PROPERTY;
/** ORDER BY clause in the input SELECT statement */
public static final String INPUT_ORDER_BY_PROPERTY = org.apache.hadoop.
mapreduce.lib.db.DBConfiguration.INPUT_ORDER_BY_PROPERTY;
/** Whole input query, exluding LIMIT...OFFSET */
public static final String INPUT_QUERY =
org.apache.hadoop.mapreduce.lib.db.DBConfiguration.INPUT_QUERY;
/** Input query to get the count of records */
public static final String INPUT_COUNT_QUERY =
org.apache.hadoop.mapreduce.lib.db.DBConfiguration.INPUT_COUNT_QUERY;
/** Class name implementing DBWritable which will hold input tuples */
public static final String INPUT_CLASS_PROPERTY =
org.apache.hadoop.mapreduce.lib.db.DBConfiguration.INPUT_CLASS_PROPERTY;
/** Output table name */
public static final String OUTPUT_TABLE_NAME_PROPERTY = org.apache.hadoop.
mapreduce.lib.db.DBConfiguration.OUTPUT_TABLE_NAME_PROPERTY;
/** Field names in the Output table */
public static final String OUTPUT_FIELD_NAMES_PROPERTY = org.apache.hadoop.
mapreduce.lib.db.DBConfiguration.OUTPUT_FIELD_NAMES_PROPERTY;
/** Number of fields in the Output table */
public static final String OUTPUT_FIELD_COUNT_PROPERTY = org.apache.hadoop.
mapreduce.lib.db.DBConfiguration.OUTPUT_FIELD_COUNT_PROPERTY;
/**
* Sets the DB access related fields in the JobConf.
* @param job the job
* @param driverClass JDBC Driver class name
* @param dbUrl JDBC DB access URL.
* @param userName DB access username
* @param passwd DB access passwd
*/
public static void configureDB(JobConf job, String driverClass, String dbUrl
, String userName, String passwd) {
job.set(DRIVER_CLASS_PROPERTY, driverClass);
job.set(URL_PROPERTY, dbUrl);
if(userName != null)
job.set(USERNAME_PROPERTY, userName);
if(passwd != null)
job.set(PASSWORD_PROPERTY, passwd);
}
/**
* Sets the DB access related fields in the JobConf.
* @param job the job
* @param driverClass JDBC Driver class name
* @param dbUrl JDBC DB access URL.
*/
public static void configureDB(JobConf job, String driverClass, String dbUrl) {
configureDB(job, driverClass, dbUrl, null, null);
}
DBConfiguration(JobConf job) {
super(job);
}
}