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;
33 * <code>ProducerNode</code> for conditional constructs.
36 * Based on an expression that will be evaluated as a boolean,
37 * one of 2 subnodes will be called.
39 public class ConditionalProducerNode implements ProducerNode {
40 private String condition;
41 private ProducerNode trueNode;
42 private ProducerNode falseNode;
44 public ConditionalProducerNode(String aCondition, ProducerNode aTrueNode, ProducerNode aFalseNode) {
45 condition = aCondition;
47 falseNode = aFalseNode;
53 public void produce(ProductionContext aProducerContext) throws ProducerExc, ProducerFailure {
55 if (ParameterExpander.evaluateBooleanExpression(aProducerContext.getValueSet(), condition)) {
57 trueNode.produce(aProducerContext);
61 falseNode.produce(aProducerContext);
65 throw new ProducerFailure(e);