2 * Copyright (C) 2001, 2002 The Mir-coders group
4 * This file is part of Mir.
6 * Mir is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * Mir is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with Mir; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * In addition, as a special exception, The Mir-coders gives permission to link
21 * the code of this program with any library licensed under the Apache Software License,
22 * The Sun (tm) Java Advanced Imaging library (JAI), The Sun JIMI library
23 * (or with modified versions of the above that use the same license as the above),
24 * and distribute linked combinations including the two. You must obey the
25 * GNU General Public License in all respects for all of the code used other than
26 * the above mentioned libraries. If you modify this file, you may extend this
27 * exception to your version of the file, but you are not obligated to do so.
28 * If you do not wish to do so, delete this exception statement from your version.
32 import java.util.ArrayList;
33 import java.util.Iterator;
34 import java.util.List;
37 * A <code>ProducerNode</code> that simply executes a
38 * list of <code>ProducerNode</code>s sequentially
40 public class CompositeProducerNode implements ProducerNode {
41 private List subNodes;
43 public CompositeProducerNode() {
44 subNodes = new ArrayList();
47 public CompositeProducerNode(ProducerNode[] aSubNodes) {
50 for (int i = 0; i<aSubNodes.length; i++) {
51 addSubNode(aSubNodes[i]);
55 public int getNrSubNodes() {
56 return subNodes.size();
59 public ProducerNode getSubNode(int anIndex) {
60 return (ProducerNode) subNodes.get(anIndex);
63 public void addSubNode(ProducerNode aSubNode) {
64 if (aSubNode != null) {
65 subNodes.add(aSubNode);
73 protected boolean isAborted(ProductionContext aProductionContext) {
74 return aProductionContext.getProducer() instanceof NodedProducer &&
75 ((NodedProducer) aProductionContext.getProducer()).getIsAborted();
78 public void produce(ProductionContext aProductionContext) throws ProducerExc, ProducerFailure {
79 Iterator i = subNodes.iterator();
81 while (i.hasNext() && !isAborted(aProductionContext)) {
82 ProducerNode node = (ProducerNode) i.next();
83 node.produce(aProductionContext);