blob: ce1483dbb5eb47a84cee81f0675ed98649ba5e76 (
plain)
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
|
/*
@VaadinApache2LicenseForJavaFiles@
*/
package com.vaadin.terminal;
import java.io.PrintWriter;
import java.io.StringWriter;
import com.vaadin.terminal.gwt.server.AbstractApplicationServlet;
/**
* <code>SystemError</code> is a runtime exception caused by error in system.
* The system error can be shown to the user as it implements
* <code>ErrorMessage</code> interface, but contains technical information such
* as stack trace and exception.
*
* SystemError does not support HTML in error messages or stack traces. If HTML
* messages are required, use {@link UserError} or a custom implementation of
* {@link ErrorMessage}.
*
* @author Vaadin Ltd.
* @version
* @VERSION@
* @since 3.0
*/
@SuppressWarnings("serial")
public class SystemError extends RuntimeException implements ErrorMessage {
/**
* The cause of the system error. The cause is stored separately as JDK 1.3
* does not support causes natively.
*/
private Throwable cause = null;
/**
* Constructor for SystemError with error message specified.
*
* @param message
* the Textual error description.
*/
public SystemError(String message) {
super(message);
}
/**
* Constructor for SystemError with causing exception and error message.
*
* @param message
* the Textual error description.
* @param cause
* the throwable causing the system error.
*/
public SystemError(String message, Throwable cause) {
super(message);
this.cause = cause;
}
/**
* Constructor for SystemError with cause.
*
* @param cause
* the throwable causing the system error.
*/
public SystemError(Throwable cause) {
this.cause = cause;
}
/**
* @see com.vaadin.terminal.ErrorMessage#getErrorLevel()
*/
public final int getErrorLevel() {
return ErrorMessage.SYSTEMERROR;
}
/**
* @see com.vaadin.terminal.Paintable#paint(com.vaadin.terminal.PaintTarget)
*/
public void paint(PaintTarget target) throws PaintException {
target.startTag("error");
target.addAttribute("level", "system");
String message = getHtmlMessage();
target.addXMLSection("div", message,
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd");
target.endTag("error");
}
/**
* Returns the message of the error in HTML.
*
* Note that this API may change in future versions.
*/
protected String getHtmlMessage() {
StringBuilder sb = new StringBuilder();
final String message = getLocalizedMessage();
if (message != null) {
sb.append("<h2>");
sb.append(AbstractApplicationServlet.safeEscapeForHtml(message));
sb.append("</h2>");
}
// Paint the exception
if (cause != null) {
sb.append("<h3>Exception</h3>");
final StringWriter buffer = new StringWriter();
cause.printStackTrace(new PrintWriter(buffer));
sb.append("<pre>");
sb.append(AbstractApplicationServlet.safeEscapeForHtml(buffer
.toString()));
sb.append("</pre>");
}
return sb.toString();
}
/**
* Gets cause for the error.
*
* @return the cause.
* @see java.lang.Throwable#getCause()
*/
@Override
public Throwable getCause() {
return cause;
}
/* Documented in super interface */
public void addListener(RepaintRequestListener listener) {
}
/* Documented in super interface */
public void removeListener(RepaintRequestListener listener) {
}
/* Documented in super interface */
public void requestRepaint() {
}
/* Documented in super interface */
public void requestRepaintRequests() {
}
public String getDebugId() {
return null;
}
public void setDebugId(String id) {
throw new UnsupportedOperationException(
"Setting testing id for this Paintable is not implemented");
}
}
|
