Coverage report

| %line | %branch
--- | --- | ---
org.apache.commons.jexl.util.PropertyExecutor |
87% |
77% |

1 |  |
     /*
2 |  |
      * Copyright 2000-2002,2004 The Apache Software Foundation.
3 |  |
      *
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      * Licensed under the Apache License, Version 2.0 (the "License");
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      * 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 |  |

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