/* This file is part of the db4o object database http://www.db4o.com
Copyright (C) 2004 - 2011 Versant Corporation http://www.versant.com
db4o is free software; you can redistribute it and/or modify it under
the terms of version 3 of the GNU General Public License as published
by the Free Software Foundation.
db4o 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 General Public License
for more details.
You should have received a copy of the GNU General Public License along
with this program. If not, see http://www.gnu.org/licenses/. */
package com.db4o.foundation;
public class EnumerateIterator extends MappingIterator {
public static final class Tuple {
public final int index;
public final Object value;
public Tuple(int index_, Object value_) {
index = index_;
value = value_;
}
}
private int _index;
public EnumerateIterator(Iterator4 iterator) {
super(iterator);
_index = 0;
}
public boolean moveNext() {
if (super.moveNext()) {
++_index;
return true;
}
return false;
}
protected Object map(Object current) {
return new Tuple(_index, current);
}
}