org.hibernate.id.UUIDGenerator#org.hibernate.id.IdentityGenerator源码实例Demo

/**
 * Constructs a new DefaultIdentifierGeneratorFactory.
 */
@SuppressWarnings("deprecation")
public DefaultIdentifierGeneratorFactory() {
	register( "uuid2", UUIDGenerator.class );
	register( "guid", GUIDGenerator.class );			// can be done with UUIDGenerator + strategy
	register( "uuid", UUIDHexGenerator.class );			// "deprecated" for new use
	register( "uuid.hex", UUIDHexGenerator.class ); 	// uuid.hex is deprecated
	register( "assigned", Assigned.class );
	register( "identity", IdentityGenerator.class );
	register( "select", SelectGenerator.class );
	register( "sequence", SequenceStyleGenerator.class );
	register( "seqhilo", SequenceHiLoGenerator.class );
	register( "increment", IncrementGenerator.class );
	register( "foreign", ForeignGenerator.class );
	register( "sequence-identity", SequenceIdentityGenerator.class );
	register( "enhanced-sequence", SequenceStyleGenerator.class );
	register( "enhanced-table", TableGenerator.class );
}
 

/**
 * The class (which implements {@link org.hibernate.id.IdentifierGenerator})
 * which acts as this dialects native generation strategy.
 * <p/>
 * Comes into play whenever the user specifies the native generator.
 *
 * @return The native generator class.
 * @deprecated use {@link #getNativeIdentifierGeneratorStrategy()} instead
 */
@Deprecated
public Class getNativeIdentifierGeneratorClass() {
	if ( getIdentityColumnSupport().supportsIdentityColumns() ) {
		return IdentityGenerator.class;
	}
	else {
		return SequenceStyleGenerator.class;
	}
}
 

/**
 * The class (which implements {@link org.hibernate.id.IdentifierGenerator})
 * which acts as this dialects native generation strategy.
 * <p/>
 * Comes into play whenever the user specifies the native generator.
 *
 * @return The native generator class.
 */
public Class getNativeIdentifierGeneratorClass() {
	if ( supportsIdentityColumns() ) {
		return IdentityGenerator.class;
	}
	else if ( supportsSequences() ) {
		return SequenceGenerator.class;
	}
	else {
		return TableHiLoGenerator.class;
	}
}
 

public boolean isIdentityColumn(IdentifierGeneratorFactory identifierGeneratorFactory, Dialect dialect) {
	identifierGeneratorFactory.setDialect( dialect );
	return IdentityGenerator.class.isAssignableFrom(identifierGeneratorFactory.getIdentifierGeneratorClass( identifierGeneratorStrategy ));
}
 

public boolean isIdentityColumn(Dialect dialect) {
	return IdentifierGeneratorFactory.getIdentifierGeneratorClass(identifierGeneratorStrategy, dialect)
			.equals(IdentityGenerator.class);
}
 

public Class getNativeIdentifierGeneratorClass() {
	return IdentityGenerator.class;
}