1 /**
2 * 2007, Digitalis Informatica. All rights reserved. Distribuicao e Gestao de Informatica, Lda. Estrada de Paco de Arcos
3 * num.9 - Piso -1 2780-666 Paco de Arcos Telefone: (351) 21 4408990 Fax: (351) 21 4408999 http://www.digitalis.pt
4 */
5 package pt.digitalis.dif.controller;
6
7 import pt.digitalis.dif.controller.interfaces.IDIFRequest;
8 import pt.digitalis.dif.controller.interfaces.IDIFResponse;
9 import pt.digitalis.dif.controller.interfaces.IDispatcherErrorHandler;
10 import pt.digitalis.dif.exception.controller.BusinessFlowException;
11 import pt.digitalis.dif.exception.controller.ControllerException;
12
13 /**
14 * @author Pedro Viegas <a href="mailto:pviegas@digitalis.pt">pviegas@digitalis.pt</a>
15 * @created Dec 21, 2007
16 */
17 abstract public class AbstractControllerErrorHandler implements IDispatcherErrorHandler {
18
19 /**
20 * Builds an error response from a stage id for error handling, with a defined handler stage (or the default one)
21 *
22 * @param originalrequest
23 * the original request
24 * @param errorStageID
25 * the error stage to redirect to. If null will redirect to the default error stage
26 * @param exception
27 * the exception launched
28 * @return the response
29 */
30 abstract protected IDIFResponse buildDynamicErrorResponse(IDIFRequest originalrequest, String errorStageID,
31 Exception exception);
32
33 /**
34 * Builds an error response from a static resource for simple rendering for when the DIF has generated errors
35 *
36 * @param originalrequest
37 * the original request
38 * @param exception
39 * the exception launched
40 * @return the response
41 */
42 abstract protected IDIFResponse buildStaticErrorResponse(IDIFRequest originalrequest, Exception exception);
43
44 /**
45 * @see pt.digitalis.dif.controller.interfaces.IDispatcherErrorHandler#processException(pt.digitalis.dif.controller.interfaces.IDIFRequest,
46 * pt.digitalis.dif.exception.controller.BusinessFlowException)
47 */
48 public IDIFResponse processException(IDIFRequest originalRequest, BusinessFlowException businessFlowException)
49 {
50
51 return buildDynamicErrorResponse(originalRequest, ExceptionHandlers.getExceptionHandler(businessFlowException),
52 businessFlowException);
53 }
54
55 /**
56 * @see pt.digitalis.dif.controller.interfaces.IDispatcherErrorHandler#processException(pt.digitalis.dif.controller.interfaces.IDIFRequest,
57 * pt.digitalis.dif.exception.controller.ControllerException)
58 */
59 public IDIFResponse processException(IDIFRequest originalRequest, ControllerException controllerException)
60 {
61 if (controllerException.isGeneratedFromException())
62 return buildStaticErrorResponse(originalRequest, controllerException);
63 else
64 return buildDynamicErrorResponse(originalRequest, ExceptionHandlers
65 .getExceptionHandler(controllerException), controllerException);
66 }
67
68 /**
69 * @see pt.digitalis.dif.controller.interfaces.IDispatcherErrorHandler#processException(pt.digitalis.dif.controller.interfaces.IDIFRequest,
70 * java.lang.RuntimeException)
71 */
72 public IDIFResponse processException(IDIFRequest originalRequest, RuntimeException runtimeException)
73 {
74 return buildDynamicErrorResponse(originalRequest, ExceptionHandlers.getExceptionHandler(runtimeException),
75 runtimeException);
76 }
77
78 /**
79 * Creates a new error request base on the original request. Injects the original request in the error one for later
80 * reference in the error stage.
81 *
82 * @param response
83 * the response to add the context to
84 * @param originalRequest
85 * the original request
86 * @param exception
87 * the exception launched
88 * @return the request with the context added
89 */
90 public IDIFResponse responseWithContext(IDIFResponse response, IDIFRequest originalRequest, Exception exception)
91 {
92 response.addStageResult(IDispatcherErrorHandler.ORIGINAL_REQUEST, originalRequest);
93 response.addStageResult(IDispatcherErrorHandler.EXCEPTION, exception);
94
95 if (response.getRequest() != null)
96 response.getRequest().addAttribute(ExceptionHandlers.RAISED_EXCEPTION_ATTRIBUTE, exception);
97
98 return response;
99 }
100 }