2 * Copyright (C) 2001-2006 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 * and distribute linked combinations including the two. You must obey the
23 * GNU General Public License in all respects for all of the code used other than
24 * the above mentioned libraries. If you modify this file, you may extend this
25 * exception to your version of the file, but you are not obligated to do so.
26 * If you do not wish to do so, delete this exception statement from your version.
30 import mir.util.ParameterExpander;
31 import mir.util.RewindableIterator;
33 import java.util.Collection;
34 import java.util.Iterator;
36 public class ListEnumeratingProducerNode extends ProducerNodeDecorator {
38 private String listExpression;
40 public ListEnumeratingProducerNode( String aKey, String aListExpression, ProducerNode aSubNode) {
44 listExpression = aListExpression;
47 public void produce(ProductionContext aProductionContext) throws ProducerFailure, ProducerExc {
52 list = ParameterExpander.evaluateExpression(aProductionContext.getValueSet(), listExpression);
54 if (list instanceof Collection) {
55 browser = ( (Collection) list).iterator();
57 else if (list instanceof Iterator) {
58 browser = (Iterator) list;
61 throw new ProducerExc("Can't enumarate a " + list.getClass().getName());
64 if (browser instanceof RewindableIterator) {
65 ((RewindableIterator) browser).rewind();
68 while (browser.hasNext() && !isAborted(aProductionContext)) {
69 ParameterExpander.setValueForKey(aProductionContext.getValueSet(), key, browser.next());
71 super.produce(aProductionContext);
76 aProductionContext.getLogger().warn("Exception occurred inside an ListEnumeratingProducerNode", t);