/*
* eXist Open Source Native XML Database
* Copyright (C) 2001-2014, Wolfgang M. Meier (meier@ifs.tu-darmstadt.de)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This library 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 Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Id$
*/
package org.exist.xquery.value;
//TODO replace with extends Iterator<Item>
public interface SequenceIterator {
SequenceIterator EMPTY_ITERATOR = new EmptySequenceIterator();
/**
* Determines if there is a next item in the sequence
*
* @return true if there is another item available, false otherwise.
*/
boolean hasNext();
/**
* Retrieves the next item from the Sequence
*
* @return The item, or null if there are no more items
*/
Item nextItem();
}