%line | %branch | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
org.apache.commons.jexl.util.PropertyExecutor |
|
|
1 | /* |
|
2 | * Copyright 2000-2002,2004 The Apache Software Foundation. |
|
3 | * |
|
4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
|
5 | * you may not use this file except in compliance with the License. |
|
6 | * You may obtain a copy of the License at |
|
7 | * |
|
8 | * http://www.apache.org/licenses/LICENSE-2.0 |
|
9 | * |
|
10 | * Unless required by applicable law or agreed to in writing, software |
|
11 | * distributed under the License is distributed on an "AS IS" BASIS, |
|
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
|
13 | * See the License for the specific language governing permissions and |
|
14 | * limitations under the License. |
|
15 | */ |
|
16 | package org.apache.commons.jexl.util; |
|
17 | ||
18 | import java.lang.reflect.InvocationTargetException; |
|
19 | ||
20 | import org.apache.commons.jexl.util.introspection.Introspector; |
|
21 | import org.apache.commons.logging.Log; |
|
22 | ||
23 | /** |
|
24 | * Returned the value of object property when executed. |
|
25 | * @since 1.0 |
|
26 | */ |
|
27 | public class PropertyExecutor extends AbstractExecutor { |
|
28 | ||
29 | /** index of the first character of the property. */ |
|
30 | private static final int PROPERTY_START_INDEX = 3; |
|
31 | /** The JEXL introspector used. */ |
|
32 | 26 | protected Introspector introspector = null; |
33 | ||
34 | /** The method used. */ |
|
35 | 26 | protected String methodUsed = null; |
36 | ||
37 | /** |
|
38 | * Constructor. |
|
39 | * |
|
40 | * @param r The log for this property executor instance. |
|
41 | * @param ispctr The JEXL introspector. |
|
42 | * @param clazz The class being examined. |
|
43 | * @param property The property being addressed. |
|
44 | */ |
|
45 | public PropertyExecutor(Log r, Introspector ispctr, |
|
46 | 26 | Class clazz, String property) { |
47 | 26 | rlog = r; |
48 | 26 | introspector = ispctr; |
49 | ||
50 | 26 | discover(clazz, property); |
51 | 26 | } |
52 | ||
53 | /** |
|
54 | * Locate the getter method for this property. |
|
55 | * |
|
56 | * @param clazz The class being analyzed. |
|
57 | * @param property Name of the property. |
|
58 | */ |
|
59 | protected void discover(Class clazz, String property) { |
|
60 | /* |
|
61 | * this is gross and linear, but it keeps it straightforward. |
|
62 | */ |
|
63 | ||
64 | try { |
|
65 | char c; |
|
66 | StringBuffer sb; |
|
67 | ||
68 | 23 | Object[] params = {}; |
69 | ||
70 | /* |
|
71 | * start with get<property> |
|
72 | * this leaves the property name |
|
73 | * as is... |
|
74 | */ |
|
75 | 23 | sb = new StringBuffer("get"); |
76 | 23 | sb.append(property); |
77 | ||
78 | 23 | methodUsed = sb.toString(); |
79 | ||
80 | 23 | method = introspector.getMethod(clazz, methodUsed, params); |
81 | ||
82 | 23 | if (method != null) { |
83 | 0 | return; |
84 | } |
|
85 | ||
86 | /* |
|
87 | * now the convenience, flip the 1st character |
|
88 | */ |
|
89 | ||
90 | 23 | sb = new StringBuffer("get"); |
91 | 23 | sb.append(property); |
92 | ||
93 | 23 | c = sb.charAt(PROPERTY_START_INDEX); |
94 | ||
95 | 23 | if (Character.isLowerCase(c)) { |
96 | 23 | sb.setCharAt(PROPERTY_START_INDEX, Character.toUpperCase(c)); |
97 | } else { |
|
98 | 0 | sb.setCharAt(PROPERTY_START_INDEX, Character.toLowerCase(c)); |
99 | } |
|
100 | ||
101 | 23 | methodUsed = sb.toString(); |
102 | 23 | method = introspector.getMethod(clazz, methodUsed, params); |
103 | ||
104 | 23 | if (method != null) { |
105 | 20 | return; |
106 | } |
|
107 | ||
108 | 3 | } catch (Exception e) { |
109 | 0 | rlog.error("PROGRAMMER ERROR : PropertyExector() : " + e); |
110 | } |
|
111 | 3 | } |
112 | ||
113 | ||
114 | /** |
|
115 | * {@inheritDoc} |
|
116 | */ |
|
117 | public Object execute(Object o) |
|
118 | throws IllegalAccessException, InvocationTargetException { |
|
119 | 22 | if (method == null) { |
120 | 0 | return null; |
121 | } |
|
122 | ||
123 | 22 | return method.invoke(o, null); |
124 | } |
|
125 | } |
|
126 |
This report is generated by jcoverage, Maven and Maven JCoverage Plugin. |