/**
* SQL-DK
* Copyright © 2015 František Kučera (frantovo.cz)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package info.globalcode.sql.dk.configuration;
import info.globalcode.sql.dk.*;
import static info.globalcode.sql.dk.DatabaseConnection.JDBC_PROPERTY_USER;
import static info.globalcode.sql.dk.DatabaseConnection.JDBC_PROPERTY_PASSWORD;
import java.sql.Connection;
import java.sql.Driver;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.Unmarshaller;
/**
* Configuration loader – deserializes Configuration from the XML file.
*
* @author Ing. František Kučera (frantovo.cz)
*/
public class Loader {
private static final Logger log = Logger.getLogger(Loader.class.getName());
public Configuration loadConfiguration() throws ConfigurationException {
try {
JAXBContext jaxb = JAXBContext.newInstance(Configuration.class.getPackage().getName(), Configuration.class.getClassLoader());
Unmarshaller u = jaxb.createUnmarshaller();
return (Configuration) u.unmarshal(Constants.CONFIG_FILE);
} catch (Exception e) {
throw new ConfigurationException("Unable to load configuration from " + Constants.CONFIG_FILE, e);
}
}
/**
* JDBC connection should not be used directly in SQL-DK.
*
* @see DatabaseDefinition#connect(info.globalcode.sql.dk.configuration.Properties)
* @param properties
* @param databaseDefinition
* @return
* @throws java.sql.SQLException
*/
public static Connection jdbcConnect(DatabaseDefinition databaseDefinition, Properties properties) throws SQLException {
synchronized (properties) {
/**
* Avoid rewriting the properties. Usually, the connection is created only once, but
* with --test-connection and with SQL-DK JDBC driver, it might be reused.
*/
properties = properties.clone();
}
if (properties.hasProperty(JDBC_PROPERTY_PASSWORD)) {
log.log(Level.WARNING, "Passing DB password as CLI parameter is insecure!");
}
Properties credentials = new Properties();
credentials.add(new Property(JDBC_PROPERTY_USER, databaseDefinition.getUserName()));
credentials.add(new Property(JDBC_PROPERTY_PASSWORD, databaseDefinition.getPassword()));
credentials.setDefaults(databaseDefinition.getProperties());
properties.setDefaults(credentials);
java.util.Properties javaProperties = properties.getJavaProperties();
String driverClassName = databaseDefinition.getDriver();
final String url = databaseDefinition.getUrl();
if (driverClassName == null) {
log.log(Level.FINE, "Using DriverManager to create connection for „{0}“", url);
return DriverManager.getConnection(url, javaProperties);
} else {
log.log(Level.FINE, "Using custom Driver „{0}“ to create connection for „{1}“", new Object[]{driverClassName, url});
try {
Class<Driver> driverClass = (Class<Driver>) Class.forName(driverClassName);
Driver driver = driverClass.newInstance();
Connection connection = driver.connect(url, javaProperties);
if (connection == null) {
log.log(Level.SEVERE, "Driver „{0}“ returend null → it does not accept the URL: „{1}“", new Object[]{driverClassName, url});
throw new SQLException("Unable to connect: driver returned null.");
} else {
return connection;
}
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | SQLException e) {
throw new SQLException("Unable to connect usig specific driver: " + driverClassName, e);
}
}
}
}