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1
16
17 package org.springframework.core.style;
18
19 import java.lang.reflect.Method  ;
20 import java.util.Collection ;
21 import java.util.Iterator ;
22 import java.util.List ;
23 import java.util.Map ;
24 import java.util.Set ;
25
26 import org.springframework.core.ReflectiveVisitorHelper;
27 import org.springframework.util.ClassUtils;
28 import org.springframework.util.ObjectUtils;
29
30
41 public class DefaultValueStyler implements ValueStyler {
42
43 private static final String EMPTY = "[empty]";
44 private static final String NULL = "[null]";
45 private static final String COLLECTION = "collection";
46 private static final String SET = "set";
47 private static final String LIST = "list";
48 private static final String MAP = "map";
49 private static final String ARRAY = "array";
50
51
52 private final ReflectiveVisitorHelper reflectiveVisitorHelper = new ReflectiveVisitorHelper();
53
54
55 public String style(Object value) {
56 return (String ) reflectiveVisitorHelper.invokeVisit(this, value);
57 }
58
59 String visit(String value) {
60 return ('\'' + value + '\'');
61 }
62
63 String visit(Number value) {
64 return String.valueOf(value);
65 }
66
67 String visit(Class clazz) {
68 return ClassUtils.getShortName(clazz);
69 }
70
71 String visit(Method method) {
72 return method.getName() + "@" + ClassUtils.getShortName(method.getDeclaringClass());
73 }
74
75 String visit(Map value) {
76 StringBuffer buffer = new StringBuffer (value.size() * 8 + 16);
77 buffer.append(MAP + "[");
78 for (Iterator i = value.entrySet().iterator(); i.hasNext();) {
79 Map.Entry entry = (Map.Entry )i.next();
80 buffer.append(style(entry));
81 if (i.hasNext()) {
82 buffer.append(',').append(' ');
83 }
84 }
85 if (value.isEmpty()) {
86 buffer.append(EMPTY);
87 }
88 buffer.append("]");
89 return buffer.toString();
90 }
91
92 String visit(Map.Entry value) {
93 return style(value.getKey()) + " -> " + style(value.getValue());
94 }
95
96 String visit(Collection value) {
97 StringBuffer buffer = new StringBuffer (value.size() * 8 + 16);
98 buffer.append(getCollectionTypeString(value) + "[");
99 for (Iterator i = value.iterator(); i.hasNext();) {
100 buffer.append(style(i.next()));
101 if (i.hasNext()) {
102 buffer.append(',').append(' ');
103 }
104 }
105 if (value.isEmpty()) {
106 buffer.append(EMPTY);
107 }
108 buffer.append("]");
109 return buffer.toString();
110 }
111
112 private String getCollectionTypeString(Collection value) {
113 if (value instanceof List ) {
114 return LIST;
115 }
116 else if (value instanceof Set ) {
117 return SET;
118 }
119 else {
120 return COLLECTION;
121 }
122 }
123
124 String visit(Object value) {
125 if (value.getClass().isArray()) {
126 return styleArray(ObjectUtils.toObjectArray(value));
127 }
128 else {
129 return String.valueOf(value);
130 }
131 }
132
133 String visitNull() {
134 return NULL;
135 }
136
137 private String styleArray(Object [] array) {
138 StringBuffer buffer = new StringBuffer (array.length * 8 + 16);
139 buffer.append(ARRAY + "<" + ClassUtils.getShortName(array.getClass().getComponentType()) + ">[");
140 for (int i = 0; i < array.length - 1; i++) {
141 buffer.append(style(array[i]));
142 buffer.append(',').append(' ');
143 }
144 if (array.length > 0) {
145 buffer.append(style(array[array.length - 1]));
146 }
147 else {
148 buffer.append(EMPTY);
149 }
150 buffer.append("]");
151 return buffer.toString();
152 }
153
154 }
155 |
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