componenttype.java

hibernate-3.1.3-all-src.zip 面向对象的访问数据库工具

			throws HibernateException {
		return getPropertyValue( component, i, session.getEntityMode() );
	}

	public Object getPropertyValue(Object component, int i, EntityMode entityMode)
	throws HibernateException {
		return tuplizers.getTuplizer(entityMode).getPropertyValue( component, i );
	}

	public Object[] getPropertyValues(Object component, SessionImplementor session)
			throws HibernateException {
		return getPropertyValues( component, session.getEntityMode() );
	}

	public Object[] getPropertyValues(Object component, EntityMode entityMode) 
	throws HibernateException {
		return tuplizers.getTuplizer(entityMode).getPropertyValues(component);
	}

	public void setPropertyValues(Object component, Object[] values, EntityMode entityMode) 
	throws HibernateException {
		tuplizers.getTuplizer(entityMode).setPropertyValues(component, values);
	}

	public Type[] getSubtypes() {
		return propertyTypes;
	}

	public String getName() {
		return "component" + ArrayHelper.toString(propertyNames);
	}

	public String toLoggableString(Object value, SessionFactoryImplementor factory)
			throws HibernateException {
		if ( value == null ) return "null";
		Map result = new HashMap();
		EntityMode entityMode = tuplizers.guessEntityMode(value);
		if (entityMode==null) {
			throw new ClassCastException( value.getClass().getName() );
		}
		Object[] values = getPropertyValues( value, entityMode );
		for ( int i = 0; i < propertyTypes.length; i++ ) {
			result.put( propertyNames[i], propertyTypes[i].toLoggableString( values[i], factory ) );
		}
		return StringHelper.unqualify( getName() ) + result.toString();
	}

	public String[] getPropertyNames() {
		return propertyNames;
	}

	public Object deepCopy(Object component, EntityMode entityMode, SessionFactoryImplementor factory) 
	throws HibernateException {
		if ( component == null ) return null;

		Object[] values = getPropertyValues( component, entityMode );
		for ( int i = 0; i < propertySpan; i++ ) {
			values[i] = propertyTypes[i].deepCopy( values[i], entityMode, factory );
		}

		Object result = instantiate(entityMode);
		setPropertyValues( result, values, entityMode );

		//not absolutely necessary, but helps for some
		//equals()/hashCode() implementations
		ComponentTuplizer ct = (ComponentTuplizer) tuplizers.getTuplizer(entityMode);
		if ( ct.hasParentProperty() ) {
			ct.setParent( result, ct.getParent(component), factory );
		}

		return result;
	}

	public Object replace(
			Object original,
			Object target,
			SessionImplementor session,
			Object owner, 
			Map copyCache)
		throws HibernateException {

		if ( original == null ) return null;
		//if ( original == target ) return target;

		final Object result = target == null ?
				instantiate( owner, session ) :
				target;
				
		final EntityMode entityMode = session.getEntityMode();
		Object[] values = TypeFactory.replace( 
				getPropertyValues( original, entityMode ),
				getPropertyValues( result, entityMode ),
				propertyTypes,
				session,
				owner, 
				copyCache
			);

		setPropertyValues( result, values, entityMode );
		return result;
	}

	public Object replace(
			Object original,
			Object target,
			SessionImplementor session,
			Object owner, 
			Map copyCache,
			ForeignKeyDirection foreignKeyDirection)
		throws HibernateException {

		if ( original == null ) return null;
		//if ( original == target ) return target;

		final Object result = target == null ?
				instantiate( owner, session ) :
				target;
				
		final EntityMode entityMode = session.getEntityMode();
		Object[] values = TypeFactory.replace( 
				getPropertyValues( original, entityMode ),
				getPropertyValues( result, entityMode ),
				propertyTypes,
				session,
				owner, 
				copyCache,
				foreignKeyDirection
			);

		setPropertyValues( result, values, entityMode );
		return result;
	}

	/**
	 * This method does not populate the component parent
	 */
	public Object instantiate(EntityMode entityMode) throws HibernateException {
		return tuplizers.getTuplizer(entityMode).instantiate();
	}

	public Object instantiate(Object parent, SessionImplementor session)
	throws HibernateException {
		
		Object result = instantiate( session.getEntityMode() );

		ComponentTuplizer ct = (ComponentTuplizer) tuplizers.getTuplizer( session.getEntityMode() );
		if ( ct.hasParentProperty() && parent != null ) {
			ct.setParent( 
					result, 
					session.getPersistenceContext().proxyFor( parent ), 
					session.getFactory() 
				);
		}
		
		return result;
	}

	public CascadeStyle getCascadeStyle(int i) {
		return cascade[i];
	}

	public boolean isMutable() {
		return true;
	}

	public Serializable disassemble(Object value, SessionImplementor session, Object owner)
			throws HibernateException {

		if ( value == null ) {
			return null;
		}
		else {
			Object[] values = getPropertyValues( value, session.getEntityMode() );
			for ( int i = 0; i < propertyTypes.length; i++ ) {
				values[i] = propertyTypes[i].disassemble( values[i], session, owner );
			}
			return values;
		}
	}

	public Object assemble(Serializable object, SessionImplementor session, Object owner)
			throws HibernateException {

		if ( object == null ) {
			return null;
		}
		else {
			Object[] values = (Object[]) object;
			Object[] assembled = new Object[values.length];
			for ( int i = 0; i < propertyTypes.length; i++ ) {
				assembled[i] = propertyTypes[i].assemble( ( Serializable ) values[i], session, owner );
			}
			Object result = instantiate( owner, session );
			setPropertyValues( result, assembled, session.getEntityMode() );
			return result;
		}
	}

	public FetchMode getFetchMode(int i) {
		return joinedFetch[i];
	}

	public Object hydrate(
			final ResultSet rs,
			final String[] names,
			final SessionImplementor session,
			final Object owner)
	throws HibernateException, SQLException {

		int begin = 0;
		boolean notNull = false;
		Object[] values = new Object[propertySpan];
		for ( int i = 0; i < propertySpan; i++ ) {
			int length = propertyTypes[i].getColumnSpan( session.getFactory() );
			String[] range = ArrayHelper.slice( names, begin, length ); //cache this
			Object val = propertyTypes[i].hydrate( rs, range, session, owner );
			if ( val == null ) {
				if (isKey) return null; //different nullability rules for pk/fk
			}
			else {
				notNull = true;
			}
			values[i] = val;
			begin += length;
		}

		return notNull ? values : null;
	}

	public Object resolve(Object value, SessionImplementor session, Object owner)
		throws HibernateException {

		if ( value != null ) {
			Object result = instantiate( owner, session );
			Object[] values = ( Object[] ) value;
			Object[] resolvedValues = new Object[values.length]; //only really need new array during semiresolve!
			for ( int i = 0; i < values.length; i++ ) {
				resolvedValues[i] = propertyTypes[i].resolve( values[i], session, owner );
			}
			setPropertyValues( result, resolvedValues, session.getEntityMode() );
			return result;
		}
		else {
			return null;
		}
	}

	public Object semiResolve(Object value, SessionImplementor session, Object owner)
			throws HibernateException {
		//note that this implementation is kinda broken
		//for components with many-to-one associations
		return resolve( value, session, owner );
	}

	public boolean[] getPropertyNullability() {
		return propertyNullability;
	}

	public boolean isXMLElement() {
		return true;
	}

	public Object fromXMLNode(Node xml, Mapping factory) throws HibernateException {
		return xml;
	}

	public void setToXMLNode(Node node, Object value, SessionFactoryImplementor factory) throws HibernateException {
		replaceNode( node, (Element) value );
	}

	public boolean[] toColumnNullness(Object value, Mapping mapping) {
		boolean[] result = new boolean[ getColumnSpan(mapping) ];
		if (value==null) return result;
		Object[] values = getPropertyValues(value, EntityMode.POJO); //TODO!!!!!!!
		int loc = 0;
		for ( int i=0; i<propertyTypes.length; i++ ) {
			boolean[] propertyNullness = propertyTypes[i].toColumnNullness( values[i], mapping );
			System.arraycopy(propertyNullness, 0, result, loc, propertyNullness.length);
			loc += propertyNullness.length;
		}
		return result;
	}
	
	public boolean isEmbedded() {
		return false;
	}

}