1 /*
2 * $Id: ELSizeTagBeanInfo.java 471754 2006-11-06 14:55:09Z husted $
3 *
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21 package org.apache.strutsel.taglib.bean;
22
23 import java.beans.IntrospectionException;
24 import java.beans.PropertyDescriptor;
25 import java.beans.SimpleBeanInfo;
26
27 import java.util.ArrayList;
28
29 /**
30 * This is the <code>BeanInfo</code> descriptor for the
31 * <code>org.apache.strutsel.taglib.bean.ELSizeTag</code> class. It is needed
32 * to override the default mapping of custom tag attribute names to class
33 * attribute names. <p> This is because the value of the unevaluated EL
34 * expression has to be kept separately from the evaluated value, which is
35 * stored in the base class. This is related to the fact that the JSP compiler
36 * can choose to reuse different tag instances if they received the same
37 * original attribute values, and the JSP compiler can choose to not re-call
38 * the setter methods, because it can assume the same values are already set.
39 */
40 public class ELSizeTagBeanInfo extends SimpleBeanInfo {
41 public PropertyDescriptor[] getPropertyDescriptors() {
42 ArrayList proplist = new ArrayList();
43
44 try {
45 proplist.add(new PropertyDescriptor("collection", ELSizeTag.class,
46 null, "setCollectionExpr"));
47 } catch (IntrospectionException ex) {
48 }
49
50 try {
51 proplist.add(new PropertyDescriptor("id", ELSizeTag.class, null,
52 "setIdExpr"));
53 } catch (IntrospectionException ex) {
54 }
55
56 try {
57 proplist.add(new PropertyDescriptor("name", ELSizeTag.class, null,
58 "setNameExpr"));
59 } catch (IntrospectionException ex) {
60 }
61
62 try {
63 proplist.add(new PropertyDescriptor("property", ELSizeTag.class,
64 null, "setPropertyExpr"));
65 } catch (IntrospectionException ex) {
66 }
67
68 try {
69 proplist.add(new PropertyDescriptor("scope", ELSizeTag.class, null,
70 "setScopeExpr"));
71 } catch (IntrospectionException ex) {
72 }
73
74 PropertyDescriptor[] result = new PropertyDescriptor[proplist.size()];
75
76 return ((PropertyDescriptor[]) proplist.toArray(result));
77 }
78 }