/**
* 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.Node;
import org.neo4j.graphdb.Relationship;
import org.neo4j.graphdb.RelationshipType;
/**
* A relationship set where each element wraps a {@link Node},
* using {@link NodeWrapperImpl}.
* @author mattias
*
* @param <T> the class type of each object in the collection.
*/
public class NodeWrapperRelationshipSet<T extends NodeWrapper>
extends RelationshipSet<T>
{
private final Class<? extends T> instanceClass;
/**
* @param node the node with its relationships acting as a collection.
* @param type the type of relationships to read/write.
* @param instanceClass the exact class of instances in the collection.
*/
public NodeWrapperRelationshipSet( Node node,
RelationshipType type, Class<? extends T> instanceClass )
{
super( node, type );
this.instanceClass = instanceClass;
}
/**
* @param node the node with its relationships acting as a collection.
* @param type the type of relationships to read/write.
* @param direction the direction of relationships.
* @param instanceClass the exact class of instances in the collection.
*/
public NodeWrapperRelationshipSet( Node node,
RelationshipType type, Direction direction,
Class<? extends T> instanceClass )
{
super( node, type, direction );
this.instanceClass = instanceClass;
}
protected Class<? extends T> getInstanceClass()
{
return this.instanceClass;
}
@Override
protected T newObject( Node node, Relationship relationship )
{
return NodeWrapperImpl.newInstance( this.getInstanceClass(), node );
}
@Override
protected Node getNodeFromItem( Object item )
{
return ( ( NodeWrapper ) item ).getUnderlyingNode();
}
}