/*
* This file or a portion of this file is licensed under the terms of
* the Globus Toolkit Public License, found in file GTPL, or at
* http://www.globus.org/toolkit/download/license.html. This notice must
* appear in redistributions of this file, with or without modification.
*
* Redistributions of this Software, with or without modification, must
* reproduce the GTPL in: (1) the Software, or (2) the Documentation or
* some other similar material which is provided with the Software (if
* any).
*
* Copyright 1999-2004 University of Chicago and The University of
* Southern California. All rights reserved.
*/
package edu.isi.pegasus.planner.invocation;
/**
* This interface defines a common base for all File elements in an invocation
* record that carry a descriptor in their values. It exists primarily for
* grouping purposes and for easier access for the database manager.
*
* @author Jens-S. Vöckler
* @author Yong Zhao
* @version $Revision$
*/
public interface HasDescriptor
{
/**
* Accessor: Obtains the descriptor of the file handle
* @return the descriptor number, or -1 for none.
*
* @see #setDescriptor(int)
*/
public int getDescriptor();
/**
* Accessor: Sets the descriptor number of a file object.
* @param descriptor is the new descriptor to store.
* @see #getDescriptor()
*/
public void setDescriptor( int descriptor );
}