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1
15 package org.apache.tapestry.portlet;
16
17 import java.io.CharArrayWriter  ;
18 import java.io.IOException ;
19 import java.io.PrintWriter ;
20
21 import javax.portlet.ActionResponse;
22
23 import org.apache.hivemind.ApplicationRuntimeException;
24 import org.apache.tapestry.IMarkupWriter;
25 import org.apache.tapestry.IRequestCycle;
26 import org.apache.tapestry.describe.RenderStrategy;
27 import org.apache.tapestry.error.ErrorMessages;
28 import org.apache.tapestry.error.ExceptionPresenter;
29 import org.apache.tapestry.error.RequestExceptionReporter;
30 import org.apache.tapestry.markup.MarkupWriterSource;
31 import org.apache.tapestry.services.ServiceConstants;
32 import org.apache.tapestry.util.ContentType;
33 import org.apache.tapestry.util.exception.ExceptionAnalyzer;
34 import org.apache.tapestry.util.exception.ExceptionDescription;
35 import org.apache.tapestry.util.exception.ExceptionProperty;
36 import org.apache.tapestry.web.WebRequest;
37 import org.apache.tapestry.web.WebResponse;
38
39
50 public class PortletExceptionPresenter implements ExceptionPresenter
51 {
52 private PortletRequestGlobals _globals;
53
54 private RenderStrategy _renderStrategy;
55
56 private WebRequest _request;
57
58 private RequestExceptionReporter _requestExceptionReporter;
59
60 private WebResponse _response;
61
62 private MarkupWriterSource _markupWriterSource;
63
64 public void presentException(IRequestCycle cycle, Throwable cause)
65 {
66 try
67 {
68 if (_globals.isRenderRequest())
69 reportRenderRequestException(cycle, cause);
70 else
71 reportActionRequestException(cycle, cause);
72 }
73 catch (Exception ex)
74 {
75
78
81 _requestExceptionReporter.reportRequestException(PortletMessages
82 .errorReportingException(ex), ex);
83
84
86 throw new ApplicationRuntimeException(ex.getMessage(), ex);
87 }
88
89 _requestExceptionReporter.reportRequestException(ErrorMessages
90 .unableToProcessClientRequest(cause), cause);
91 }
92
93 private void reportActionRequestException(IRequestCycle cycle, Throwable cause)
94 {
95 CharArrayWriter caw = new CharArrayWriter ();
96 PrintWriter pw = new PrintWriter (caw);
97
98 IMarkupWriter writer = _markupWriterSource
99 .newMarkupWriter(pw, new ContentType("text/html"));
100
101 writeException(writer, cycle, cause);
102
103 writer.close();
104
105 String markup = caw.toString();
106
107 _request.getSession(true).setAttribute(
108 PortletConstants.PORTLET_EXCEPTION_MARKUP_ATTRIBUTE,
109 markup);
110
111 ActionResponse response = _globals.getActionResponse();
112
113 response.setRenderParameter(ServiceConstants.SERVICE, PortletConstants.EXCEPTION_SERVICE);
114 }
115
116 private void reportRenderRequestException(IRequestCycle cycle, Throwable cause)
117 throws IOException
118 {
119 PrintWriter pw = _response.getPrintWriter(new ContentType("text/html"));
120
121 IMarkupWriter writer = _markupWriterSource
122 .newMarkupWriter(pw, new ContentType("text/html"));
123
124 writeException(writer, cycle, cause);
125 }
126
127 public void setGlobals(PortletRequestGlobals globals)
128 {
129 _globals = globals;
130 }
131
132 public void setRenderStrategy(RenderStrategy renderStrategy)
133 {
134 _renderStrategy = renderStrategy;
135 }
136
137 public void setRequest(WebRequest request)
138 {
139 _request = request;
140 }
141
142 public void setRequestExceptionReporter(RequestExceptionReporter requestExceptionReporter)
143 {
144 _requestExceptionReporter = requestExceptionReporter;
145 }
146
147 public void setResponse(WebResponse response)
148 {
149 _response = response;
150 }
151
152 public void setMarkupWriterSource(MarkupWriterSource markupWriterSource)
153 {
154 _markupWriterSource = markupWriterSource;
155 }
156
157 private void writeException(IMarkupWriter writer, IRequestCycle cycle,
158 ExceptionDescription exception, boolean showStackTrace)
159 {
160 writer.begin("div");
161 writer.attribute("class", "portlet-section-header");
162 writer.print(exception.getExceptionClassName());
163 writer.end();
164 writer.println();
165
166 writer.begin("div");
167 writer.attribute("class", "portlet-msg-error");
168 writer.print(exception.getMessage());
169 writer.end();
170 writer.println();
171
172 ExceptionProperty[] properties = exception.getProperties();
173
174 if (properties.length > 0)
175 {
176
177 writer.begin("table");
178 writer.attribute("class", "portlet-section-subheader");
179
180 for (int i = 0; i < properties.length; i++)
181 {
182 writer.begin("tr");
183
184 writer.attribute("class", i % 2 == 0 ? "portlet-section-body"
185 : "portlet-section-alternate");
186
187 writer.begin("th");
188 writer.print(properties[i].getName());
189 writer.end();
190 writer.println();
191
192 writer.begin("td");
193
194 _renderStrategy.renderObject(properties[i].getValue(), writer, cycle);
195 writer.end("tr");
196 writer.println();
197 }
198
199 writer.end();
200 writer.println();
201 }
202
203 if (!showStackTrace)
204 return;
205
206 writer.begin("ul");
207
208 String [] trace = exception.getStackTrace();
209
210 for (int i = 0; i < trace.length; i++)
211 {
212 writer.begin("li");
213 writer.print(trace[i]);
214 writer.end();
215 writer.println();
216 }
217
218 writer.end();
219 writer.println();
220
221 }
222
223 private void writeException(IMarkupWriter writer, IRequestCycle cycle, Throwable cause)
224 {
225 ExceptionDescription[] exceptions = new ExceptionAnalyzer().analyze(cause);
226
227 for (int i = 0; i < exceptions.length; i++)
228 writeException(writer, cycle, exceptions[i], i + 1 == exceptions.length);
229 }
230
231 } |
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