/**
* Copyright (c) 2002-2010 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.util;
import org.neo4j.graphdb.Direction;
import org.neo4j.graphdb.GraphDatabaseService;
import org.neo4j.graphdb.Node;
import org.neo4j.graphdb.RelationshipType;
/**
* An implementation of {@link Link} which uses {@link NodeWrapper}.
*
* @param <T> the type of objects used in this instance.
*/
public class NodeWrapperLink<T extends NodeWrapper> extends AbstractLink<T>
{
private final Class<? extends T> theClass;
/**
* @param node the node to act as the link.
* @param type the relationship type to be the link relationship.
* @param thisIsGenericsFault well, even if we have T we must send the
* same class here to make instantiation work.
*/
public NodeWrapperLink( Node node, RelationshipType type,
Class<? extends T> thisIsGenericsFault )
{
super( node, type );
this.theClass = thisIsGenericsFault;
}
/**
* @param graphDb the {@link GraphDatabaseService}.
* @param node the node to act as the link.
* @param type the relationship type to be the link relationship.
* @param thisIsGenericsFault well, even if we have T we must send the
* same class here to make instantiation work.
* @param direction the direction of the relationship.
*/
public NodeWrapperLink( GraphDatabaseService graphDb, Node node, RelationshipType type,
Direction direction, Class<T> thisIsGenericsFault )
{
super( node, type, direction );
this.theClass = thisIsGenericsFault;
}
protected Class<? extends T> classType()
{
return this.theClass;
}
@Override
protected T newObject( Node node )
{
return NodeWrapperImpl.newInstance( this.classType(), node );
}
@Override
protected Node getNodeFromItem( T item )
{
return item.getUnderlyingNode();
}
}