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.
30 package mir.producer.reader;
32 import mir.producer.ProducerExc;
33 import mir.producer.ProducerFailure;
34 import mir.producer.ProducerNode;
35 import mir.producer.ProductionContext;
36 import mir.util.ParameterExpander;
38 import java.util.HashMap;
39 import java.util.Iterator;
43 * <p> A ScriptedProducerNode is a ProducerNode which is defined in
44 * producers.xml file by the <nodedefinition> statement. </p>
46 * <p>It Acts as a "function" (or "macro") that can be "called"
47 * elsewhere in a producer. More precisely, it is a way to define a
48 * new producer node type inside the producers.xml file. (check the
49 * Language node in that file for an example).</p>
51 public class ScriptedProducerNode implements ProducerNode {
52 private ScriptedProducerNodeDefinition definition;
53 private Map integerParameterValues;
54 private Map stringParameterValues;
55 private Map nodeParameterValues;
57 public ScriptedProducerNode(ScriptedProducerNodeDefinition aDefinition, Map aStringParameterValues, Map anIntegerParameterValues, Map aNodeParameterValues) {
58 definition = aDefinition;
59 stringParameterValues = new HashMap();
60 stringParameterValues.putAll(aStringParameterValues);
61 integerParameterValues = new HashMap();
62 integerParameterValues.putAll(anIntegerParameterValues);
63 nodeParameterValues = new HashMap();
64 nodeParameterValues.putAll(aNodeParameterValues);
67 public void produce(ProductionContext aProductionContext) throws ProducerFailure, ProducerExc {
69 Map oldValues = new HashMap();
70 ScriptedProducerNodeTool.saveMapValues(oldValues,
71 aProductionContext.getValueSet(), definition.getStringParameters().keySet());
72 ScriptedProducerNodeTool.saveMapValues(oldValues,
73 aProductionContext.getValueSet(), definition.getIntegerParameters().keySet());
75 Iterator i = stringParameterValues.entrySet().iterator();
78 Map.Entry entry = (Map.Entry) i.next();
80 if (entry.getValue() instanceof String) {
81 aProductionContext.getValueSet().put(entry.getKey(),
82 ParameterExpander.expandExpression(aProductionContext.getValueSet(),
83 (String) entry.getValue()));
87 i = integerParameterValues.entrySet().iterator();
90 Map.Entry entry = (Map.Entry) i.next();
92 if (entry.getValue() instanceof String) {
93 aProductionContext.getValueSet().put(entry.getKey(),
94 ParameterExpander.evaluateExpression(aProductionContext.getValueSet(), (String) entry.getValue()));
98 ScriptedProducerNodeTool.pushNodeParameterValues(aProductionContext.getValueSet(),
99 definition.getName(), nodeParameterValues);
101 definition.getBody().produce(aProductionContext);
104 ScriptedProducerNodeTool.popNodeParameterValues(aProductionContext.getValueSet(), definition.getName());
108 ScriptedProducerNodeTool.restoreMapValues(aProductionContext.getValueSet(), definition.getIntegerParameters().keySet(), oldValues);
109 ScriptedProducerNodeTool.restoreMapValues(aProductionContext.getValueSet(), definition.getStringParameters().keySet(), oldValues);
112 catch (Exception e) {
113 aProductionContext.getLogger().error("Scripted producer node " + definition.getName() + " caused an exception", e);