org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl#fromConfigSettings ( )源码实例Demo

/**
 * Find all persistence-units from all accessible {@code META-INF/persistence.xml} resources
 *
 * @param integration The Map of integration settings
 *
 * @return List of descriptors for all discovered persistence-units.
 */
public static List<ParsedPersistenceXmlDescriptor> locatePersistenceUnits(Map integration) {
	final PersistenceXmlParser parser = new PersistenceXmlParser(
			ClassLoaderServiceImpl.fromConfigSettings( integration ),
			PersistenceUnitTransactionType.RESOURCE_LOCAL
	);
	parser.doResolve( integration );
	return new ArrayList<>( parser.persistenceUnits.values() );
}
 

/**
 * Generic method to parse a specified {@code persistence.xml} and return a Map of descriptors
 * for all discovered persistence-units keyed by the PU name.
 *
 * @param persistenceXmlUrl The URL of the {@code persistence.xml} to parse
 * @param transactionType The specific PersistenceUnitTransactionType to incorporate into the persistence-unit descriptor
 * @param integration The Map of integration settings
 *
 * @return Map of persistence-unit descriptors keyed by the PU name
 */
public static Map<String, ParsedPersistenceXmlDescriptor> parse(
		URL persistenceXmlUrl,
		PersistenceUnitTransactionType transactionType,
		Map integration) {
	PersistenceXmlParser parser = new PersistenceXmlParser(
			ClassLoaderServiceImpl.fromConfigSettings( integration ),
			transactionType
	);

	parser.doResolve( integration );
	return parser.persistenceUnits;
}