1 | |
|
2 | |
|
3 | |
|
4 | |
|
5 | |
|
6 | |
|
7 | |
|
8 | |
|
9 | |
|
10 | |
|
11 | |
|
12 | |
|
13 | |
|
14 | |
|
15 | |
|
16 | |
|
17 | |
|
18 | |
|
19 | |
package org.apache.myfaces.taglib.core; |
20 | |
|
21 | |
import javax.el.ELContext; |
22 | |
import javax.el.ValueExpression; |
23 | |
import javax.faces.application.Application; |
24 | |
import javax.faces.context.FacesContext; |
25 | |
import javax.faces.validator.RequiredValidator; |
26 | |
import javax.faces.validator.Validator; |
27 | |
import javax.faces.webapp.ValidatorELTag; |
28 | |
import javax.servlet.jsp.JspException; |
29 | |
|
30 | |
|
31 | |
|
32 | |
|
33 | |
|
34 | |
|
35 | |
|
36 | 0 | public class ValidateRequiredTag extends ValidatorELTag |
37 | |
{ |
38 | |
|
39 | |
|
40 | |
|
41 | |
private static final long serialVersionUID = 6569308536432242026L; |
42 | |
|
43 | |
private ValueExpression _binding; |
44 | |
|
45 | |
public void setBinding(ValueExpression binding) |
46 | |
{ |
47 | 0 | _binding = binding; |
48 | 0 | } |
49 | |
|
50 | |
@Override |
51 | |
public void release() |
52 | |
{ |
53 | 0 | _binding = null; |
54 | 0 | } |
55 | |
|
56 | |
@Override |
57 | |
protected Validator createValidator() throws JspException |
58 | |
{ |
59 | 0 | FacesContext facesContext = FacesContext.getCurrentInstance(); |
60 | 0 | ELContext elContext = facesContext.getELContext(); |
61 | 0 | if (null != _binding) |
62 | |
{ |
63 | |
Object validator; |
64 | |
try |
65 | |
{ |
66 | 0 | validator = _binding.getValue(elContext); |
67 | |
} |
68 | 0 | catch (Exception e) |
69 | |
{ |
70 | 0 | throw new JspException("Error while creating the Validator", e); |
71 | 0 | } |
72 | 0 | if (validator instanceof RequiredValidator) |
73 | |
{ |
74 | 0 | return (Validator)validator; |
75 | |
} |
76 | |
} |
77 | 0 | Application application = facesContext.getApplication(); |
78 | 0 | RequiredValidator validator = null; |
79 | |
try |
80 | |
{ |
81 | 0 | validator = (RequiredValidator) application.createValidator(RequiredValidator.VALIDATOR_ID); |
82 | |
} |
83 | 0 | catch (Exception e) |
84 | |
{ |
85 | 0 | throw new JspException("Error while creating the Validator", e); |
86 | 0 | } |
87 | |
|
88 | 0 | if (null != validator) |
89 | |
{ |
90 | 0 | if (null != _binding) |
91 | |
{ |
92 | 0 | _binding.setValue(elContext, validator); |
93 | |
} |
94 | |
} |
95 | 0 | return validator; |
96 | |
} |
97 | |
} |