/*
* reserved comment block
* DO NOT REMOVE OR ALTER!
*/
/*
* Copyright 2001-2006 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* $Id: UnionIterator.java,v 1.5 2005/09/28 13:48:38 pvedula Exp $
*/
/**
* UnionIterator takes a set of NodeIterators and produces
* a merged NodeSet in document order with duplicates removed
* The individual iterators are supposed to generate nodes
* in document order
* @author Jacek Ambroziak
* @author Santiago Pericas-Geertsen
*/
/** wrapper for NodeIterators to support iterator
comparison on the value of their next() method
*/
private final class LookAheadIterator
extends MultiValuedNodeHeapIterator.HeapNode
{
super();
}
public int step() {
return _node;
}
return clone;
}
public void setMark() {
super.setMark();
}
public void gotoMark() {
super.gotoMark();
}
}
return this;
}
return this;
}
} // end of LookAheadIterator
}
return this;
}
}