public DefaultIdentifierGeneratorFactory() 
{
		register( "uuid", UUIDHexGenerator.class );
		register( "hilo", TableHiLoGenerator.class );
		register( "assigned", Assigned.class );
		register( "identity", IdentityGenerator.class );
		register( "select", SelectGenerator.class );
		register( "sequence", SequenceGenerator.class );
		register( "seqhilo", SequenceHiLoGenerator.class );
		register( "increment", IncrementGenerator.class );
		register( "foreign", ForeignGenerator.class );
		register( "guid", GUIDGenerator.class );
		register( "uuid.hex", UUIDHexGenerator.class ); 	// uuid.hex is deprecated
		register( "sequence-identity", SequenceIdentityGenerator.class );
		register( "enhanced-sequence", SequenceStyleGenerator.class );
		register( "enhanced-table", TableGenerator.class );
}

Constructs a new DefaultIdentifierGeneratorFactory.

 public IdentifierGenerator createIdentifierGenerator(String strategy,
    Type type,
    Properties config) 
{
		try {
			Class clazz = getIdentifierGeneratorClass( strategy );
			IdentifierGenerator idgen = ( IdentifierGenerator ) clazz.newInstance();
			if ( idgen instanceof Configurable ) {
				( ( Configurable ) idgen ).configure( type, config, dialect );
			}
			return idgen;
		}
		catch ( Exception e ) {
			String msg = "Could not instantiate id generator [entity-name="
					+ config.get( IdentifierGenerator.ENTITY_NAME ) + "]";
			throw new MappingException( msg, e );
		}
}

{@inheritDoc}

 public Class getIdentifierGeneratorClass(String strategy) 
{
		if ( "native".equals( strategy ) ) {
			return dialect.getNativeIdentifierGeneratorClass();
		}
		Class generatorClass = ( Class ) generatorStrategyToClassNameMap.get( strategy );
		try {
			if ( generatorClass == null ) {
				generatorClass = ReflectHelper.classForName( strategy );
			}
		}
		catch ( ClassNotFoundException e ) {
			throw new MappingException( "Could not interpret id generator strategy [" + strategy + "]" );
		}
		return generatorClass;
}

{@inheritDoc}

 public  void register(String strategy,
    Class generatorClass) 
{
		String msg = "Registering IdentifierGenerator strategy [" + strategy + "] - > [" + generatorClass + "]";
		Object old = generatorStrategyToClassNameMap.put( strategy, generatorClass );
		if ( old != null ) {
			msg += ", overriding [" + old + "]";
		}
		log.debug( msg );
}

 public  void setDialect(Dialect dialect) 
{
		log.debug( "Setting dialect [" + dialect + "]" );
		this.dialect = dialect;
}

{@inheritDoc}