Source code: org/apache/hivemind/schema/rules/SetPropertyRule.java
1 // Copyright 2004, 2005 The Apache Software Foundation
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 package org.apache.hivemind.schema.rules;
16
17 import org.apache.commons.logging.Log;
18 import org.apache.commons.logging.LogFactory;
19 import org.apache.hivemind.Element;
20 import org.apache.hivemind.ErrorHandler;
21 import org.apache.hivemind.schema.SchemaProcessor;
22 import org.apache.hivemind.schema.Translator;
23 import org.apache.hivemind.util.PropertyUtils;
24
25 /**
26 * Used to set a property of an object to a literal value.
27 *
28 * @author Howard Lewis Ship
29 */
30 public class SetPropertyRule extends BaseRule
31 {
32 private static final Log LOG = LogFactory.getLog(SetPropertyRule.class);
33
34 private String _propertyName;
35 private String _value;
36 private Translator _smartTranslator;
37
38 public void begin(SchemaProcessor processor, Element element)
39 {
40 String value = RuleUtils.processText(processor, element, _value);
41
42 Object target = processor.peek();
43
44 try
45 {
46 if (_smartTranslator == null)
47 _smartTranslator = RuleUtils.getTranslator(processor, "smart");
48
49 Class propertyType = PropertyUtils.getPropertyType(target, _propertyName);
50
51 Object finalValue =
52 _smartTranslator.translate(
53 processor.getContributingModule(),
54 propertyType,
55 value,
56 element.getLocation());
57
58 PropertyUtils.write(target, _propertyName, finalValue);
59 }
60 catch (Exception ex)
61 {
62 ErrorHandler eh = processor.getContributingModule().getErrorHandler();
63
64 String message = RulesMessages.unableToSetProperty(_propertyName, target, ex);
65
66 eh.error(LOG, message, element.getLocation(), ex);
67 }
68
69 }
70
71 public void setPropertyName(String string)
72 {
73 _propertyName = string;
74 }
75
76 public void setValue(String string)
77 {
78 _value = string;
79 }
80
81 public String getPropertyName()
82 {
83 return _propertyName;
84 }
85
86 public String getValue()
87 {
88 return _value;
89 }
90
91 }