/**
* 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.oodt.xmlps.product;
//OODT imports
import org.apache.oodt.commons.database.DatabaseConnectionBuilder;
import org.apache.oodt.xmlps.structs.CDEResult;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import javax.sql.DataSource;
/**
*
* <p>
* Executes CDE Queries against an underlying JDBC database, backed by Apache
* commons-pool and commons-dbcp.
* </p>
* .
*/
public class DBMSExecutor {
private final DataSource dataSource;
public DBMSExecutor() {
String jdbcUrl = System.getProperty("xmlps.datasource.jdbc.url");
String user = System.getProperty("xmlps.datasource.jdbc.user");
String pass = System.getProperty("xmlps.datasource.jdbc.pass");
String driver = System.getProperty("xmlps.datasource.jdbc.driver");
dataSource = DatabaseConnectionBuilder.buildDataSource(user, pass, driver, jdbcUrl);
}
public CDEResult executeLocalQuery(String sql) throws SQLException {
try {
Connection conn = dataSource.getConnection();
Statement statement = conn.createStatement();
ResultSet rs = statement.executeQuery(sql);
CDEResult result = new CDEResult(rs, conn);
return result;
} catch (SQLException e) {
e.printStackTrace();
throw e;
}
// do not close the Statement or Connection here
// call CDEResult#close() to close ResultSet and Connection
}
}