|
8 | 8 | */
|
9 | 9 | public class BeanUtil {
|
10 | 10 |
|
11 |
| - public static final BeanUtil INSTANCE=new BeanUtil(); |
| 11 | + public static final BeanUtil SINGLETON = new BeanUtil(); |
12 | 12 |
|
13 |
| - public static final String PREFIX_GETTER_IS="is"; |
14 |
| - public static final String PREFIX_GETTER_GET="get"; |
15 |
| - public static final String PREFIX_SETTER="set"; |
16 |
| - public static final String PREFIX_ADDER="add"; |
| 13 | + public static final String PREFIX_GETTER_IS = "is"; |
| 14 | + public static final String PREFIX_GETTER_GET = "get"; |
| 15 | + public static final String PREFIX_SETTER = "set"; |
| 16 | + public static final String PREFIX_ADDER = "add"; |
17 | 17 |
|
18 |
| - /** |
19 |
| - * |
20 |
| - * @param method to check if it is an 'adder' method. |
21 |
| - * @return true if the given method is an 'adder' method. |
22 |
| - */ |
23 |
| - public boolean isAdder(Method method) { |
24 |
| - int parameterCount = getParameterCount(method); |
25 |
| - if(parameterCount!=1){ |
26 |
| - return false; |
27 |
| - } |
28 |
| - Class<?> returnType = method.getReturnType(); |
29 |
| - if(returnType!=void.class){ |
30 |
| - return false; |
31 |
| - } |
32 |
| - String methodName = method.getName(); |
33 |
| - return methodName.startsWith(PREFIX_ADDER); |
34 |
| - } |
| 18 | + /** |
| 19 | + * |
| 20 | + * @param method to check if it is an 'adder' method. |
| 21 | + * @return true if the given method is an 'adder' method. |
| 22 | + */ |
| 23 | + public boolean isAdder(Method method) { |
| 24 | + int parameterCount = getParameterCount(method); |
| 25 | + if (parameterCount != 1) { |
| 26 | + return false; |
| 27 | + } |
| 28 | + Class<?> returnType = method.getReturnType(); |
| 29 | + if (returnType != void.class) { |
| 30 | + return false; |
| 31 | + } |
| 32 | + String methodName = method.getName(); |
| 33 | + return methodName.startsWith(PREFIX_ADDER); |
| 34 | + } |
35 | 35 |
|
36 |
| - /** |
37 |
| - * |
38 |
| - * @param method to check if it is a standard java beans getter. |
39 |
| - * @return true if the given method is a standard java beans getter. |
40 |
| - */ |
41 |
| - public boolean isGetter(Method method) { |
42 |
| - int parameterCount = getParameterCount(method); |
43 |
| - if(parameterCount>0){ |
44 |
| - return false; |
45 |
| - } |
46 |
| - Class<?> returnType = method.getReturnType(); |
47 |
| - if(returnType==void.class){ |
48 |
| - return false; |
49 |
| - } |
50 |
| - String methodName = method.getName(); |
51 |
| - if(!methodName.startsWith(PREFIX_GETTER_GET)&&!methodName.startsWith(PREFIX_GETTER_IS)){ |
52 |
| - return false; |
53 |
| - } |
54 |
| - if(methodName.startsWith(PREFIX_GETTER_IS)){ |
55 |
| - if(!returnType.equals(boolean.class)&&!returnType.equals(Boolean.class)){ |
56 |
| - return false; |
57 |
| - } |
58 |
| - } |
59 |
| - return true; |
60 |
| - } |
| 36 | + /** |
| 37 | + * |
| 38 | + * @param method to check if it is a standard java beans getter. |
| 39 | + * @return true if the given method is a standard java beans getter. |
| 40 | + */ |
| 41 | + public boolean isGetter(Method method) { |
| 42 | + int parameterCount = getParameterCount(method); |
| 43 | + if (parameterCount > 0) { |
| 44 | + return false; |
| 45 | + } |
| 46 | + Class<?> returnType = method.getReturnType(); |
| 47 | + if (returnType == void.class) { |
| 48 | + return false; |
| 49 | + } |
| 50 | + String methodName = method.getName(); |
| 51 | + if (!methodName.startsWith(PREFIX_GETTER_GET) && !methodName.startsWith(PREFIX_GETTER_IS)) { |
| 52 | + return false; |
| 53 | + } |
| 54 | + if (methodName.startsWith(PREFIX_GETTER_IS)) { |
| 55 | + if (!returnType.equals(boolean.class) && !returnType.equals(Boolean.class)) { |
| 56 | + return false; |
| 57 | + } |
| 58 | + } |
| 59 | + return true; |
| 60 | + } |
61 | 61 |
|
62 |
| - private int getParameterCount(Method method) { |
63 |
| - return method.getParameterTypes().length; |
64 |
| - } |
| 62 | + private int getParameterCount(Method method) { |
| 63 | + return method.getParameterTypes().length; |
| 64 | + } |
65 | 65 |
|
66 |
| - /** |
67 |
| - * |
68 |
| - * @param method to check if it is a standard java beans setter. |
69 |
| - * @return true if the given method is a standard java beans setter. |
70 |
| - */ |
71 |
| - public boolean isSetter(Method method){ |
72 |
| - int parameterCount = getParameterCount(method); |
73 |
| - if(parameterCount!=1){ |
74 |
| - return false; |
75 |
| - } |
76 |
| - Class<?> returnType = method.getReturnType(); |
77 |
| - if(returnType!=void.class){ |
78 |
| - return false; |
79 |
| - } |
80 |
| - String methodName = method.getName(); |
81 |
| - if(!methodName.startsWith(PREFIX_SETTER)){ |
82 |
| - return false; |
83 |
| - } |
84 |
| - return true; |
85 |
| - } |
| 66 | + /** |
| 67 | + * |
| 68 | + * @param method to check if it is a standard java beans setter. |
| 69 | + * @return true if the given method is a standard java beans setter. |
| 70 | + */ |
| 71 | + public boolean isSetter(Method method) { |
| 72 | + int parameterCount = getParameterCount(method); |
| 73 | + if (parameterCount != 1) { |
| 74 | + return false; |
| 75 | + } |
| 76 | + Class<?> returnType = method.getReturnType(); |
| 77 | + if (returnType != void.class) { |
| 78 | + return false; |
| 79 | + } |
| 80 | + String methodName = method.getName(); |
| 81 | + if (!methodName.startsWith(PREFIX_SETTER)) { |
| 82 | + return false; |
| 83 | + } |
| 84 | + return true; |
| 85 | + } |
86 | 86 |
|
87 |
| - /** |
88 |
| - * @param method to get the associated property name for. |
89 |
| - * @return The property name of the associated property if the given method matches a standard java beans getter or setter. |
90 |
| - */ |
91 |
| - public String getPropertyName(Method method) { |
92 |
| - String methodName = method.getName(); |
93 |
| - String rawPropertyName=getSubstringIfPrefixMatches(methodName,PREFIX_GETTER_GET); |
94 |
| - if(rawPropertyName==null){ |
95 |
| - rawPropertyName=getSubstringIfPrefixMatches(methodName, PREFIX_SETTER); |
96 |
| - } |
97 |
| - if(rawPropertyName==null){ |
98 |
| - rawPropertyName=getSubstringIfPrefixMatches(methodName,PREFIX_GETTER_IS); |
99 |
| - } |
100 |
| - if(rawPropertyName==null){ |
101 |
| - rawPropertyName=getSubstringIfPrefixMatches(methodName,PREFIX_ADDER); |
102 |
| - } |
103 |
| - return toLowerCamelCase(rawPropertyName); |
104 |
| - } |
| 87 | + /** |
| 88 | + * @param method to get the associated property name for. |
| 89 | + * @return The property name of the associated property if the given method matches a standard java beans getter or setter. |
| 90 | + */ |
| 91 | + public String getPropertyName(Method method) { |
| 92 | + String methodName = method.getName(); |
| 93 | + String rawPropertyName = getSubstringIfPrefixMatches(methodName, PREFIX_GETTER_GET); |
| 94 | + if (rawPropertyName == null) { |
| 95 | + rawPropertyName = getSubstringIfPrefixMatches(methodName, PREFIX_SETTER); |
| 96 | + } |
| 97 | + if (rawPropertyName == null) { |
| 98 | + rawPropertyName = getSubstringIfPrefixMatches(methodName, PREFIX_GETTER_IS); |
| 99 | + } |
| 100 | + if (rawPropertyName == null) { |
| 101 | + rawPropertyName = getSubstringIfPrefixMatches(methodName, PREFIX_ADDER); |
| 102 | + } |
| 103 | + return toLowerCamelCase(rawPropertyName); |
| 104 | + } |
105 | 105 |
|
106 |
| - /** |
107 |
| - * Converts the given String into lower camel case form. |
108 |
| - * @param string to decapitalize. |
109 |
| - * @return null if the given String is null. |
110 |
| - * Emtpy string if the given string is empty. |
111 |
| - * The given string if the first two consecutive letters are in upper case. |
112 |
| - * The given string with the first letter in lower case otherwise, which might be the given string. |
113 |
| - */ |
114 |
| - public String toLowerCamelCase(String string){ |
115 |
| - if(string==null){ |
116 |
| - return null; |
117 |
| - } |
118 |
| - if(string.isEmpty()){ |
119 |
| - return string; |
120 |
| - } |
121 |
| - if (string.length() > 1 && Character.isUpperCase(string.charAt(1)) && |
122 |
| - Character.isUpperCase(string.charAt(0))){ |
123 |
| - return string; |
| 106 | + /** |
| 107 | + * Converts the given String into lower camel case form. |
| 108 | + * @param string to decapitalize. |
| 109 | + * @return null if the given String is null. |
| 110 | + * Emtpy string if the given string is empty. |
| 111 | + * The given string if the first two consecutive letters are in upper case. |
| 112 | + * The given string with the first letter in lower case otherwise, which might be the given string. |
| 113 | + */ |
| 114 | + public String toLowerCamelCase(String string) { |
| 115 | + if (string == null) { |
| 116 | + return null; |
| 117 | + } |
| 118 | + if (string.isEmpty()) { |
| 119 | + return string; |
| 120 | + } |
| 121 | + if (string.length() > 1 && Character.isUpperCase(string.charAt(1)) && Character.isUpperCase(string.charAt(0))) { |
| 122 | + return string; |
124 | 123 | }
|
125 | 124 | char chars[] = string.toCharArray();
|
126 | 125 | chars[0] = Character.toLowerCase(chars[0]);
|
127 | 126 | return new String(chars);
|
128 |
| - } |
| 127 | + } |
129 | 128 |
|
130 |
| - private String getSubstringIfPrefixMatches(String wholeString,String prefix) { |
131 |
| - if(wholeString.startsWith(prefix)){ |
132 |
| - return wholeString.substring(prefix.length()); |
133 |
| - } |
134 |
| - return null; |
135 |
| - } |
| 129 | + private String getSubstringIfPrefixMatches(String wholeString, String prefix) { |
| 130 | + if (wholeString.startsWith(prefix)) { |
| 131 | + return wholeString.substring(prefix.length()); |
| 132 | + } |
| 133 | + return null; |
| 134 | + } |
136 | 135 |
|
137 | 136 | }
|
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