| /******************************************************************************* |
| * Copyright (C) 2007 The University of Manchester |
| * |
| * Modifications to the initial code base are copyright of their |
| * respective authors, or their employers as appropriate. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public License |
| * as published by the Free Software Foundation; either version 2.1 of |
| * the License, or (at your option) any later version. |
| * |
| * This program 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 |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser 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 |
| ******************************************************************************/ |
| package net.sf.taverna.t2.reference; |
| |
| import java.util.Set; |
| |
| /** |
| * A set of ExternalReferenceSPI instances, all of which point to the same (byte |
| * equivalent) data. The set is identified by a T2Reference. This interface is |
| * read-only, as are most of the interfaces in this package. Rather than |
| * modifying properties of the reference set directly the client code should use |
| * the reference manager functionality. |
| * <p> |
| * It is technically okay, but rather unhelpful, to have a ReferenceSet with no |
| * ExternalReferenceSPI implementations. In general this is a sign that |
| * something has gone wrong somewhere as the reference set will not be |
| * resolvable in any way, but it would still retain its unique identifier so |
| * there may be occasions where this is the desired behaviour. |
| * |
| * @author Tom Oinn |
| * |
| */ |
| public interface ReferenceSet extends Identified { |
| |
| /** |
| * The reference set contains a set of ExternalReferenceSPI instances, all |
| * of which point to byte equivalent data. |
| * |
| * @return the set of references to external data |
| */ |
| public Set<ExternalReferenceSPI> getExternalReferences(); |
| |
| } |