/*! ******************************************************************************
*
* Pentaho Data Integration
*
* Copyright (C) 2002-2013 by Pentaho : http://www.pentaho.com
*
*******************************************************************************
*
* Licensed 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.pentaho.di.core.database;
import static org.junit.Assert.assertTrue;
import org.junit.BeforeClass;
import org.junit.Test;
import org.pentaho.di.core.KettleEnvironment;
/**
* Tests the value returned from org.pentaho.di.core.database.DatabaseInterface.getSelectCountStatement for the database
* the interface is fronting.
*
* As this release, Hive uses the following to select the number of rows:
*
* SELECT COUNT(1) FROM ....
*
* All other databases use:
*
* SELECT COUNT(*) FROM ....
*/
public class SelectCountTests {
/**
*
*/
private static final String NonHiveSelect = "select count(*) from ";
private static final String TableName = "NON_EXISTANT";
public static final String h2DatabaseXML = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
+ "<connection>" + "<name>H2</name>" + "<server>127.0.0.1</server>" + "<type>H2</type>"
+ "<access>Native</access>" + "<database>mem:db</database>" + "<port></port>" + "<username>sa</username>"
+ "<password></password>" + "</connection>";
public static final String OracleDatabaseXML = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
+ "<connection>" + "<name>Oracle</name>" + "<server>127.0.0.1</server>" + "<type>Oracle</type>"
+ "<access>Native</access>" + "<database>test</database>" + "<port>1024</port>"
+ "<username>scott</username>" + "<password>tiger</password>" + "</connection>";
public static final String MySQLDatabaseXML = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
+ "<connection>" + "<name>MySQL</name>" + "<server>127.0.0.1</server>" + "<type>MySQL</type>"
+ "<access></access>" + "<database>test</database>" + "<port>3306</port>" + "<username>sa</username>"
+ "<password></password>" + "</connection>";
@BeforeClass
public static void setUpBeforeClass() throws Exception {
KettleEnvironment.init( false );
}
@Test
public void testH2Database() {
try {
String expectedSQL = NonHiveSelect + TableName;
DatabaseMeta databaseMeta = new DatabaseMeta( h2DatabaseXML );
String sql = databaseMeta.getDatabaseInterface().getSelectCountStatement( TableName );
assertTrue( sql.equalsIgnoreCase( expectedSQL ) );
} catch ( Exception e ) {
e.printStackTrace();
}
}
@Test
public void testOracleDatabase() {
try {
String expectedSQL = NonHiveSelect + TableName;
DatabaseMeta databaseMeta = new DatabaseMeta( OracleDatabaseXML );
String sql = databaseMeta.getDatabaseInterface().getSelectCountStatement( TableName );
assertTrue( sql.equalsIgnoreCase( expectedSQL ) );
} catch ( Exception e ) {
e.printStackTrace();
}
}
@Test
public void testMySQLDatabase() {
try {
String expectedSQL = NonHiveSelect + TableName;
DatabaseMeta databaseMeta = new DatabaseMeta( MySQLDatabaseXML );
String sql = databaseMeta.getDatabaseInterface().getSelectCountStatement( TableName );
assertTrue( sql.equalsIgnoreCase( expectedSQL ) );
} catch ( Exception e ) {
e.printStackTrace();
}
}
}