1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.apache.commons.bcel6.generic;
import java.io.File;
import java.io.IOException;
import org.apache.commons.bcel6.AbstractTestCase;
import org.apache.commons.bcel6.classfile.AnnotationEntry;
import org.apache.commons.bcel6.classfile.ElementValuePair;
import org.apache.commons.bcel6.classfile.Field;
import org.apache.commons.bcel6.classfile.JavaClass;
import org.apache.commons.bcel6.util.SyntheticRepository;
public class FieldAnnotationsTestCase extends AbstractTestCase
{
/**
* Check field AnnotationEntrys are retrievable.
*/
public void testFieldAnnotationEntrys() throws ClassNotFoundException
{
JavaClass clazz = getTestClass(PACKAGE_BASE_NAME+".data.AnnotatedFields");
// TODO L...;?
checkAnnotatedField(clazz, "i", "L"+PACKAGE_BASE_SIG+"/data/SimpleAnnotation;", "id", "1");
checkAnnotatedField(clazz, "s", "L"+PACKAGE_BASE_SIG+"/data/SimpleAnnotation;", "id", "2");
}
/**
* Check field AnnotationEntrys (de)serialize ok.
*/
public void testFieldAnnotationEntrysReadWrite() throws ClassNotFoundException,
IOException
{
JavaClass clazz = getTestClass(PACKAGE_BASE_NAME+".data.AnnotatedFields");
checkAnnotatedField(clazz, "i", "L"+PACKAGE_BASE_SIG+"/data/SimpleAnnotation;", "id", "1");
checkAnnotatedField(clazz, "s", "L"+PACKAGE_BASE_SIG+"/data/SimpleAnnotation;", "id", "2");
// Write it out
File tfile = createTestdataFile("AnnotatedFields.class");
clazz.dump(tfile);
SyntheticRepository repos2 = createRepos(".");
repos2.loadClass("AnnotatedFields");
checkAnnotatedField(clazz, "i", "L"+PACKAGE_BASE_SIG+"/data/SimpleAnnotation;", "id", "1");
checkAnnotatedField(clazz, "s", "L"+PACKAGE_BASE_SIG+"/data/SimpleAnnotation;", "id", "2");
assertTrue(tfile.delete());
}
/**
* Check we can load in a class, modify its field AnnotationEntrys, save it,
* reload it and everything is correct.
*/
public void testFieldAnnotationModification()
throws ClassNotFoundException
{
boolean dbg = false;
JavaClass clazz = getTestClass(PACKAGE_BASE_NAME+".data.AnnotatedFields");
ClassGen clg = new ClassGen(clazz);
Field f = clg.getFields()[0];
if (dbg) {
System.err.println("Field in freshly constructed class is: " + f);
}
if (dbg) {
System.err.println("AnnotationEntrys on field are: "
+ dumpAnnotationEntries(f.getAnnotationEntries()));
}
AnnotationEntryGen fruitBasedAnnotationEntry = createFruitAnnotationEntry(clg
.getConstantPool(), "Tomato", false);
FieldGen fg = new FieldGen(f, clg.getConstantPool());
if (dbg) {
System.err.println("Adding AnnotationEntry to the field");
}
fg.addAnnotationEntry(fruitBasedAnnotationEntry);
if (dbg) {
System.err.println("FieldGen (mutable field) is " + fg);
}
if (dbg) {
System.err.println("with AnnotationEntrys: "
+ dumpAnnotationEntries(fg.getAnnotationEntries()));
}
if (dbg) {
System.err
.println("Replacing original field with new field that has extra AnnotationEntry");
}
clg.removeField(f);
clg.addField(fg.getField());
f = clg.getFields()[1]; // there are two fields in the class, removing
// and readding has changed the order
// so this time index [1] is the 'int i' field
if (dbg) {
System.err.println("Field now looks like this: " + f);
}
if (dbg) {
System.err.println("With AnnotationEntrys: "
+ dumpAnnotationEntries(f.getAnnotationEntries()));
}
assertTrue("Should be 2 AnnotationEntrys on this field, but there are "
+ f.getAnnotationEntries().length, f.getAnnotationEntries().length == 2);
}
// helper methods
public void checkAnnotatedField(final JavaClass clazz, final String fieldname,
final String AnnotationEntryName, final String AnnotationEntryElementName,
final String AnnotationEntryElementValue)
{
Field[] fields = clazz.getFields();
for (Field f : fields) {
AnnotationEntry[] fieldAnnotationEntrys = f.getAnnotationEntries();
if (f.getName().equals(fieldname))
{
checkAnnotationEntry(fieldAnnotationEntrys[0], AnnotationEntryName,
AnnotationEntryElementName, AnnotationEntryElementValue);
}
}
}
private void checkAnnotationEntry(final AnnotationEntry a, final String name, final String elementname,
final String elementvalue)
{
assertTrue("Expected AnnotationEntry to have name " + name
+ " but it had name " + a.getAnnotationType(), a.getAnnotationType()
.equals(name));
assertTrue("Expected AnnotationEntry to have one element but it had "
+ a.getElementValuePairs().length, a.getElementValuePairs().length == 1);
ElementValuePair envp = a.getElementValuePairs()[0];
assertTrue("Expected element name " + elementname + " but was "
+ envp.getNameString(), elementname
.equals(envp.getNameString()));
assertTrue("Expected element value " + elementvalue + " but was "
+ envp.getValue().stringifyValue(), elementvalue.equals(envp
.getValue().stringifyValue()));
}
// helper methods
public void checkValue(final AnnotationEntry a, final String name, final String tostring)
{
for (int i = 0; i < a.getElementValuePairs().length; i++)
{
ElementValuePair element = a.getElementValuePairs()[i];
if (element.getNameString().equals(name))
{
if (!element.getValue().stringifyValue().equals(tostring))
{
fail("Expected element " + name + " to have value "
+ tostring + " but it had value "
+ element.getValue().stringifyValue());
}
return;
}
}
fail("Didnt find named element " + name);
}
}
|
