/**
* Create DDL Generator for specified database engine with given global and specific
* configurations.
*
* @param engine Database engine.
* @param globalConf Global configuration file.
* @param specificConf Specific configuration file for database engine.
* @return DDL generator for database engine.
* @throws GeneratorException If database engine has not been specified or no generator is
* available for the database engine.
*/
public static Generator createDDLGenerator(
final String engine, final String globalConf, final String specificConf)
throws GeneratorException {
DDLGenConfiguration config = new DDLGenConfiguration();
// load default global configuration
config.addProperties(Generator.GLOBAL_CONFIG_PATH + Generator.GLOBAL_CONFIG_NAME);
// overload with global configuration given on commandline
if (globalConf != null) {
config.addProperties(globalConf);
}
GeneratorRegistry registry = new GeneratorRegistry(config);
String eng = config.getStringValue(DDLGenConfiguration.DEFAULT_ENGINE_KEY, "");
if (engine != null) {
eng = engine;
}
Generator gen = registry.getGenerator(eng.toLowerCase());
// load default configuration for specific database engine
config.addProperties(gen.getEngineConfigPath() + gen.getEngineConfigName());
// overload with specific configuration given on commandline
if (specificConf != null) {
config.addProperties(specificConf);
}
// create key generator registry to be used by the generator
gen.setKeyGenRegistry(new KeyGeneratorRegistry(config));
// initialize generator
gen.initialize();
return gen;
}
@Override
public void initialize(Configuration config) {
super.initialize(config);
rand = new Random();
}