/*
* Copyright (c) 2002-2009 "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.kernel.impl.core;
import java.util.NoSuchElementException;
import org.neo4j.kernel.impl.util.IntArray;
class FastRelTypeElement extends RelTypeElementIterator
{
private final IntArray src;
private int position = 0;
private Integer nextElement = null;
FastRelTypeElement( String type, NodeImpl node, IntArray src )
{
super( type, node );
if ( src == null )
{
this.src = new IntArray();
}
else
{
this.src = src;
}
}
public boolean hasNext()
{
if ( nextElement != null )
{
return true;
}
if ( position >= src.length() )
{
while ( getNode().getMoreRelationships() &&
position >= src.length() );
}
while ( position < src.length() )
{
nextElement = src.get(position++);
return true;
}
return false;
}
public Integer next()
{
hasNext();
if ( nextElement != null )
{
Integer elementToReturn = nextElement;
nextElement = null;
return elementToReturn;
}
throw new NoSuchElementException();
}
public void remove()
{
throw new UnsupportedOperationException();
}
}