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1 package com.thoughtworks.acceptance;
2
3 import com.thoughtworks.xstream.XStream;
4 import com.thoughtworks.xstream.alias.ClassMapper;
5 import com.thoughtworks.xstream.mapper.MapperWrapper;
6
7 public class OmitFieldsTest extends AbstractAcceptanceTest {
8
9 public static class Thing extends StandardObject {
10 transient String  alwaysIgnore;
11 String sometimesIgnore;
12 String neverIgnore;
13 }
14
15 public void testTransientFieldsAreOmittedByDefault() {
16 Thing in = new Thing();
17 in.alwaysIgnore = "a";
18 in.sometimesIgnore = "b";
19 in.neverIgnore = "c";
20
21 String expectedXml = "" +
22 "<thing>\n" +
23 " <sometimesIgnore>b</sometimesIgnore>\n" +
24 " <neverIgnore>c</neverIgnore>\n" +
25 "</thing>";
26
27 xstream.alias("thing", Thing.class);
28
29 String actualXml = xstream.toXML(in);
30 assertEquals(expectedXml, actualXml);
31
32 Thing out = (Thing) xstream.fromXML(actualXml);
33 assertEquals(null, out.alwaysIgnore);
34 assertEquals("b", out.sometimesIgnore);
35 assertEquals("c", out.neverIgnore);
36 }
37
38 public void testAdditionalFieldsCanBeExplicitlyOmittedThroughFacade() {
39 Thing in = new Thing();
40 in.alwaysIgnore = "a";
41 in.sometimesIgnore = "b";
42 in.neverIgnore = "c";
43
44 String expectedXml = "" +
45 "<thing>\n" +
46 " <neverIgnore>c</neverIgnore>\n" +
47 "</thing>";
48
49 xstream.alias("thing", Thing.class);
50 xstream.omitField(Thing.class, "sometimesIgnore");
51
52 String actualXml = xstream.toXML(in);
53 assertEquals(expectedXml, actualXml);
54
55 Thing out = (Thing) xstream.fromXML(actualXml);
56 assertEquals(null, out.alwaysIgnore);
57 assertEquals(null, out.sometimesIgnore);
58 assertEquals("c", out.neverIgnore);
59 }
60
61 public static class AnotherThing extends StandardObject {
62 String stuff;
63 String cheese;
64 String myStuff;
65 String myCheese;
66 }
67
68 public void testFieldsCanBeIgnoredUsingCustomStrategy() {
69 AnotherThing in = new AnotherThing();
70 in.stuff = "a";
71 in.cheese = "b";
72 in.myStuff = "c";
73 in.myCheese = "d";
74
75 String expectedXml = "" +
76 "<thing>\n" +
77 " <stuff>a</stuff>\n" +
78 " <cheese>b</cheese>\n" +
79 "</thing>";
80
81 class OmitFieldsWithMyPrefixMapper extends MapperWrapper {
82 public OmitFieldsWithMyPrefixMapper(ClassMapper wrapped) {
83 super(wrapped);
84 }
85
86 public boolean shouldSerializeMember(Class definedIn, String fieldName) {
87 return !fieldName.startsWith("my");
88 }
89 }
90
91 xstream = new XStream() {
92 protected MapperWrapper wrapMapper(MapperWrapper next) {
93 return new OmitFieldsWithMyPrefixMapper(next);
94 }
95 };
96
97 xstream.alias("thing", AnotherThing.class);
98
99 String actualXml = xstream.toXML(in);
100 assertEquals(expectedXml, actualXml);
101
102 AnotherThing out = (AnotherThing) xstream.fromXML(actualXml);
103 assertEquals("a", out.stuff);
104 assertEquals("b", out.cheese);
105 assertEquals(null, out.myStuff);
106 assertEquals(null, out.myCheese);
107 }
108 }
109 |
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