/* Copyright (C) 2003 Univ. of Massachusetts Amherst, Computer Science Dept.
This file is part of "MALLET" (MAchine Learning for LanguagE Toolkit).
http://www.cs.umass.edu/~mccallum/mallet
This software is provided under the terms of the Common Public License,
version 1.0, as published by http://www.opensource.org. For further
information, see the file `LICENSE' included with this distribution. */
package cc.mallet.grmm.util;
import cc.mallet.pipe.Pipe;
import cc.mallet.pipe.iterator.PipeInputIterator;
import cc.mallet.types.Instance;
import java.util.Iterator;
/**
* Created: Mar 3, 2005
*
* @author <A HREF="mailto:casutton@cs.umass.edu>casutton@cs.umass.edu</A>
* @version $Id: PipedIterator.java,v 1.1 2007/10/22 21:37:58 mccallum Exp $
*/
@Deprecated // With the new Pipe's able to act as iterators themselves, this should no longer be necessary
public class PipedIterator implements Iterator<Instance> {
Iterator<Instance> subIt;
Pipe pipe;
public PipedIterator (Iterator<Instance> subIt, Pipe pipe)
{
this.subIt = subIt;
this.pipe = pipe;
}
// The PipeInputIterator interface
public Instance next ()
{
Instance inst = subIt.next ();
inst = pipe.pipe (inst);
return new Instance (inst.getData (), inst.getTarget (), inst.getName (), inst.getSource ());
}
public boolean hasNext ()
{
return subIt.hasNext ();
}
public void remove () { throw new IllegalStateException ("This Iterator<Instance> does not implement remove()."); }
}