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