public Connection getConnection() {
try {
if (connection == null || connection.isClosed()) {
loadJdbcDriver();
connection =
DriverManager.getConnection(
GeneratorProperties.getRequiredProperty("jdbc.url"),
GeneratorProperties.getRequiredProperty("jdbc.username"),
GeneratorProperties.getProperty("jdbc.password"));
}
return connection;
} catch (SQLException e) {
throw new RuntimeException(e);
}
}
private void loadJdbcDriver() {
String driver = GeneratorProperties.getRequiredProperty("jdbc.driver");
try {
Class.forName(driver);
} catch (ClassNotFoundException e) {
throw new RuntimeException("not found jdbc driver class:[" + driver + "]", e);
}
}
