Best Cerberus-source code snippet using org.cerberus.servlet.crud.transversaltables.ReadParameter.processRequest
Source:ReadParameter.java
...64 * @throws ServletException if a servlet-specific error occurs65 * @throws IOException if an I/O error occurs66 * @throws org.cerberus.exception.CerberusException67 */68 protected void processRequest(HttpServletRequest request, HttpServletResponse response)69 throws ServletException, IOException, CerberusException {70 String echo = request.getParameter("sEcho");71 ApplicationContext appContext = WebApplicationContextUtils.getWebApplicationContext(this.getServletContext());72 response.setContentType("application/json");73 response.setCharacterEncoding("utf8");74 // Calling Servlet Transversal Util.75 ServletUtil.servletStart(request);76 // Default message to unexpected error.77 MessageEvent msg = new MessageEvent(MessageEventEnum.DATA_OPERATION_ERROR_UNEXPECTED);78 msg.setDescription(msg.getDescription().replace("%DESCRIPTION%", ""));79 PolicyFactory policy = Sanitizers.FORMATTING.and(Sanitizers.LINKS);80 /**81 * Parsing and securing all required parameters.82 */83 String mySystem = request.getParameter("system");84 String columnName = ParameterParserUtil.parseStringParam(request.getParameter("columnName"), "");85 // Nothing to do here as no parameter to check.86 //87 // Global boolean on the servlet that define if the user has permition to edit and delete object.88 boolean userHasPermissions = request.isUserInRole("Administrator");89 // Init Answer with potencial error from Parsing parameter.90 AnswerItem answer = new AnswerItem(new MessageEvent(MessageEventEnum.DATA_OPERATION_OK));91 try {92 JSONObject jsonResponse;93 String system1;94 if (request.getParameter("system1") == null) {95 system1 = "DEFAULT";96 } else {97 system1 = policy.sanitize(request.getParameter("system1"));98 }99 if (request.getParameter("param") == null && Strings.isNullOrEmpty(columnName)) {100 answer = findParameterList(system1, appContext, userHasPermissions, request);101 jsonResponse = (JSONObject) answer.getItem();102 } else if (!Strings.isNullOrEmpty(columnName)) {103 answer = findDistinctValuesOfColumn(system1, appContext, request, columnName);104 jsonResponse = (JSONObject) answer.getItem();105 } else {106 answer = findParameterBySystemByKey(system1, request.getParameter("param"), userHasPermissions, appContext);107 jsonResponse = (JSONObject) answer.getItem();108 }109 jsonResponse.put("messageType", answer.getResultMessage().getMessage().getCodeString());110 jsonResponse.put("message", answer.getResultMessage().getDescription());111 jsonResponse.put("sEcho", echo);112 response.getWriter().print(jsonResponse.toString());113 } catch (JSONException e) {114 LOG.warn(e);115 //returns a default error message with the json format that is able to be parsed by the client-side116 response.getWriter().print(AnswerUtil.createGenericErrorAnswer());117 }118 }119 /**120 * Handles the HTTP <code>GET</code> method.121 *122 * @param request servlet request123 * @param response servlet response124 * @throws ServletException if a servlet-specific error occurs125 * @throws IOException if an I/O error occurs126 */127 @Override128 protected void doGet(HttpServletRequest request, HttpServletResponse response)129 throws ServletException, IOException {130 try {131 processRequest(request, response);132 } catch (CerberusException ex) {133 LOG.warn(ex);134 }135 }136 /**137 * Handles the HTTP <code>POST</code> method.138 *139 * @param request servlet request140 * @param response servlet response141 * @throws ServletException if a servlet-specific error occurs142 * @throws IOException if an I/O error occurs143 */144 @Override145 protected void doPost(HttpServletRequest request, HttpServletResponse response)146 throws ServletException, IOException {147 try {148 processRequest(request, response);149 } catch (CerberusException ex) {150 LOG.warn(ex);151 }152 }153 private AnswerItem findParameterList(String system1, ApplicationContext appContext, boolean userHasPermissions, HttpServletRequest request) throws JSONException {154 AnswerItem item = new AnswerItem();155 JSONObject object = new JSONObject();156 parameterService = appContext.getBean(ParameterService.class);157 int startPosition = Integer.valueOf(ParameterParserUtil.parseStringParam(request.getParameter("iDisplayStart"), "0"));158 int length = Integer.valueOf(ParameterParserUtil.parseStringParam(request.getParameter("iDisplayLength"), "0"));159 /*int sEcho = Integer.valueOf(request.getParameter("sEcho"));*/160 String searchParameter = ParameterParserUtil.parseStringParam(request.getParameter("sSearch"), "");161 int columnToSortParameter = Integer.parseInt(ParameterParserUtil.parseStringParam(request.getParameter("iSortCol_0"), "2"));162 String sColumns = ParameterParserUtil.parseStringParam(request.getParameter("sColumns"), "para,valC,valS,descr");...
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