2 * Copyright (C) 2001, 2002 The Mir-coders group
4 * This file is part of Mir.
6 * Mir is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * Mir is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with Mir; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * In addition, as a special exception, The Mir-coders gives permission to link
21 * the code of this program with any library licensed under the Apache Software License,
22 * The Sun (tm) Java Advanced Imaging library (JAI), The Sun JIMI library
23 * (or with modified versions of the above that use the same license as the above),
24 * and distribute linked combinations including the two. You must obey the
25 * GNU General Public License in all respects for all of the code used other than
26 * the above mentioned libraries. If you modify this file, you may extend this
27 * exception to your version of the file, but you are not obligated to do so.
28 * If you do not wish to do so, delete this exception statement from your version.
32 import java.util.HashMap;
33 import java.util.Iterator;
34 import java.util.List;
35 import java.util.Locale;
37 import javax.servlet.http.HttpServletRequest;
38 import javax.servlet.http.HttpServletResponse;
39 import javax.servlet.http.HttpSession;
41 import mir.config.MirPropertiesConfiguration;
42 import mir.entity.adapter.EntityAdapterEngine;
43 import mir.entity.adapter.EntityAdapterModel;
44 import mir.log.LoggerWrapper;
45 import mir.module.AbstractModule;
46 import mir.module.ModuleExc;
47 import mir.storage.StorageObject;
48 import mir.util.HTTPRequestParser;
49 import mir.util.URLBuilder;
50 import mircoders.global.MirGlobal;
51 import mircoders.servlet.ServletHelper;
52 import mircoders.localizer.MirLocalizerExc;
53 import multex.Failure;
58 * <p>Description: </p>
59 * <p>Copyright: Copyright (c) 2003</p>
61 * @author not attributable
65 public abstract class ServletModule {
66 public String defaultAction;
67 protected LoggerWrapper logger;
68 protected static MirPropertiesConfiguration configuration = MirPropertiesConfiguration.instance();
69 private static Locale fallbackLocale = new Locale(configuration.getString("Mir.Admin.FallbackLanguage", "en"), "");
71 protected AbstractModule mainModule;
72 protected String definition;
73 protected EntityAdapterModel model;
75 protected String listGenerator;
76 protected String editGenerator;
77 protected String deleteConfirmationGenerator;
78 protected int nrEntitiesPerListPage;
81 public ServletModule(){
84 model = MirGlobal.localizer().dataModel().adapterModel();
86 catch (MirLocalizerExc e) {
87 logger.error("Can't create model: " + e.toString());
88 throw new ServletModuleFailure("Can't retrieve model", e);
93 listGenerator = configuration.getString("ServletModule."+getOperationModuleName()+".ListTemplate");
94 editGenerator = configuration.getString("ServletModule."+getOperationModuleName()+".EditTemplate");
95 deleteConfirmationGenerator = configuration.getString("ServletModule."+getOperationModuleName()+".DeleteConfirmationTemplate");
96 nrEntitiesPerListPage =
97 configuration.getInt("ServletModule."+getOperationModuleName()+".ListSize",
98 configuration.getInt("ServletModule.Default.ListSize", 20));
103 public void logAdminUsage(HttpServletRequest aRequest, String anObject, String aDescription) {
104 MirGlobal.logAdminUsage(ServletHelper.getUser(aRequest), getOperationModuleName() + ":" + anObject, aDescription);
108 * Singleton instance retrievel method. MUST be overridden in subclasses.
110 * @return ServletModule the single instance of the servletmodule class
112 public static ServletModule getInstance() {
117 * Return the module name
119 protected String getOperationModuleName() {
120 return getClass().getName().substring((new String("mircoders.servlet.ServletModule")).length());
123 public static Locale[] getLocales(HttpServletRequest aRequest) {
124 return new Locale[] { getLocale(aRequest), fallbackLocale };
128 * Return the locale either from the session or the accept-language header ot the request
129 * this supersedes getLanguage for the new i18n
131 public static Locale getLocale(HttpServletRequest aRequest) {
133 HttpSession session = aRequest.getSession(false);
134 if (session != null) {
135 // session can be null in case of logout
136 loc = (Locale) session.getAttribute("locale");
138 // if there is nothing in the session get it fron the accept-language
140 loc = aRequest.getLocale();
146 * get the locale either from the session or the accept-language header ot the request
147 * this supersedes getLanguage for the new i18n
149 public Locale getFallbackLocale(HttpServletRequest aRequest) {
150 return fallbackLocale;
154 * Function to specify the default ordering for lists. May be overridden.
159 public String getDefaultListOrdering() {
161 if (mainModule!=null && mainModule.getStorageObject()!=null){
162 if (mainModule.getStorageObject().getFieldNames().contains("webdb_create"))
163 return "webdb_create desc";
170 * Generic list servlet method
173 public void list(HttpServletRequest aRequest, HttpServletResponse aResponse) throws ServletModuleExc
175 HTTPRequestParser requestParser = new HTTPRequestParser(aRequest);
177 String where = requestParser.getParameter("where");
178 String order = requestParser.getParameterWithDefault("order", getDefaultListOrdering());
179 int offset = requestParser.getIntegerWithDefault("offset", 0);
181 returnList(aRequest, aResponse, where, order, offset);
185 public void returnList(HttpServletRequest aRequest, HttpServletResponse aResponse,
186 String aWhereClause, String anOrderByClause, int anOffset) throws ServletModuleExc {
188 HTTPRequestParser requestParser = new HTTPRequestParser(aRequest);
189 URLBuilder urlBuilder = new URLBuilder();
193 Map responseData = ServletHelper.makeGenerationData(aRequest, aResponse, getLocales(aRequest));
196 EntityAdapterEngine.retrieveAdapterList(model, definition, aWhereClause, anOrderByClause, nrEntitiesPerListPage, anOffset);
198 responseData.put("nexturl", null);
199 responseData.put("prevurl", null);
200 responseData.put("module", getOperationModuleName());
202 count=mainModule.getSize(aWhereClause);
204 urlBuilder.setValue("module", getOperationModuleName());
205 urlBuilder.setValue("do", "list");
206 urlBuilder.setValue("where", aWhereClause);
207 urlBuilder.setValue("order", anOrderByClause);
209 urlBuilder.setValue("searchfield", requestParser.getParameter("searchfield"));
210 urlBuilder.setValue("searchtext", requestParser.getParameter("searchtext"));
211 urlBuilder.setValue("searchispublished", requestParser.getParameter("searchispublished"));
212 urlBuilder.setValue("searchstatus", requestParser.getParameter("searchstatus"));
213 urlBuilder.setValue("searchorder", requestParser.getParameter("searchorder"));
215 responseData.put("searchfield", requestParser.getParameter("searchfield"));
216 responseData.put("searchtext", requestParser.getParameter("searchtext"));
217 responseData.put("searchispublished", requestParser.getParameter("searchispublished"));
218 responseData.put("searchstatus", requestParser.getParameter("searchstatus"));
219 responseData.put("searchorder", requestParser.getParameter("searchorder"));
221 urlBuilder.setValue("offset", anOffset);
222 responseData.put("offset" , new Integer(anOffset).toString());
223 responseData.put("thisurl" , urlBuilder.getQuery());
225 if (count>anOffset+nrEntitiesPerListPage) {
226 urlBuilder.setValue("offset", anOffset + nrEntitiesPerListPage);
227 responseData.put("nexturl" , urlBuilder.getQuery());
231 urlBuilder.setValue("offset", Math.max(anOffset - nrEntitiesPerListPage, 0));
232 responseData.put("prevurl" , urlBuilder.getQuery());
235 responseData.put("entities", list);
236 responseData.put("from" , Integer.toString(anOffset+1));
237 responseData.put("count", Integer.toString(count));
238 responseData.put("to", Integer.toString(Math.min(anOffset+nrEntitiesPerListPage, count)));
240 ServletHelper.generateResponse(aResponse.getWriter(), responseData, listGenerator);
242 catch (Throwable e) {
243 throw new ServletModuleFailure(e);
247 public void editObject(HttpServletRequest aRequest, HttpServletResponse aResponse, String anId) throws ServletModuleExc {
249 editObject(aRequest, aResponse, model.makeEntityAdapter(definition, mainModule.getById(anId)), false, anId);
251 catch (Throwable t) {
252 throw new ServletModuleFailure(t);
256 public void editObject(HttpServletRequest aRequest, HttpServletResponse aResponse, Object anObject, boolean anIsNew, String anId) throws ServletModuleExc {
257 HTTPRequestParser requestParser = new HTTPRequestParser(aRequest);
258 URLBuilder urlBuilder = new URLBuilder();
261 Map responseData = ServletHelper.makeGenerationData(aRequest, aResponse, getLocales(aRequest));
263 responseData.put("module", getOperationModuleName());
264 responseData.put("entity", anObject);
265 responseData.put("new", new Boolean(anIsNew));
268 urlBuilder.setValue("module", getOperationModuleName());
269 urlBuilder.setValue("returnurl", requestParser.getParameter("returnurl"));
271 urlBuilder.setValue("do", "add");
273 urlBuilder.setValue("id", anId);
274 urlBuilder.setValue("do", "edit");
276 responseData.put("returnurl", requestParser.getParameter("returnurl"));
277 responseData.put("thisurl", urlBuilder.getQuery());
279 ServletHelper.generateResponse(aResponse.getWriter(), responseData, editGenerator);
281 catch (Throwable e) {
282 throw new ServletModuleFailure(e);
287 * Generic add servlet method
289 public void add(HttpServletRequest aRequest, HttpServletResponse aResponse)
290 throws ServletModuleExc, ServletModuleUserExc, ServletModuleFailure {
292 Map object = new HashMap();
294 Iterator i = mainModule.getStorageObject().getFieldNames().iterator();
297 object.put(i.next(), "");
299 initializeNewObject(object, aRequest, aResponse);
301 editObject(aRequest, aResponse, object, true, null);
304 protected void initializeNewObject(Map aNewObject, HttpServletRequest aRequest, HttpServletResponse aResponse) {
308 * Generic edit servlet method
310 public void edit(HttpServletRequest aRequest, HttpServletResponse aResponse) throws ServletModuleExc, ServletModuleUserExc, ServletModuleFailure {
311 edit(aRequest, aResponse, aRequest.getParameter("id"));
316 public void edit(HttpServletRequest aRequest, HttpServletResponse aResponse, String anIdentifier)
317 throws ServletModuleExc, ServletModuleUserExc, ServletModuleFailure {
319 editObject(aRequest, aResponse, model.makeEntityAdapter(definition, mainModule.getById(anIdentifier)), false, anIdentifier);
321 catch (Throwable e) {
322 throw new ServletModuleFailure(e);
327 * Generic update servlet method
329 public void update(HttpServletRequest aRequest, HttpServletResponse aResponse)
330 throws ServletModuleExc, ServletModuleUserExc, ServletModuleFailure {
332 HTTPRequestParser requestParser = new HTTPRequestParser(aRequest);
334 String id = aRequest.getParameter("id");
335 Map withValues = getIntersectingValues(aRequest, mainModule.getStorageObject());
336 mainModule.set(withValues);
338 logAdminUsage(aRequest, id, "object modified");
340 String returnUrl = requestParser.getParameter("returnurl");
342 if (returnUrl!=null) {
343 ServletHelper.redirect(aResponse, returnUrl);
346 edit(aRequest, aResponse, id);
349 catch (Throwable e) {
350 throw new ServletModuleFailure(e);
355 * Generic insert servlet method
357 public void insert(HttpServletRequest aRequest, HttpServletResponse aResponse)
358 throws ServletModuleExc, ServletModuleUserExc, ServletModuleFailure {
360 HTTPRequestParser requestParser = new HTTPRequestParser(aRequest);
362 Map object = getIntersectingValues(aRequest, mainModule.getStorageObject());
364 String id = processInstertedObject(object, aRequest, aResponse);
366 logAdminUsage(aRequest, id, "object inserted");
368 String returnUrl = requestParser.getParameter("returnurl");
370 if (returnUrl!=null) {
371 ServletHelper.redirect(aResponse, returnUrl);
374 edit(aRequest, aResponse, id);
377 catch (Throwable e) {
378 throw new ServletModuleFailure(e);
385 public String processInstertedObject(Map anObject, HttpServletRequest aRequest, HttpServletResponse aResponse) {
387 return mainModule.add(anObject);
389 catch (ModuleExc t) {
390 throw new ServletModuleFailure(t);
395 * Generic delete confirmation servlet method
397 public void confirmdelete(HttpServletRequest aRequest, HttpServletResponse aResponse) {
399 String idParam = aRequest.getParameter("id");
400 String confirmParam = aRequest.getParameter("confirm");
402 if (confirmParam != null && !confirmParam.equals("")) {
403 mainModule.deleteById(idParam);
404 logAdminUsage(aRequest, idParam, "object deleted");
405 ServletHelper.redirect(aResponse, aRequest.getParameter("okurl"));
408 ServletHelper.redirect(aResponse, aRequest.getParameter("cancelurl"));
410 catch (Throwable t) {
411 throw new ServletModuleFailure(t);
416 * Generic delete servlet method
418 public void delete(HttpServletRequest aRequest, HttpServletResponse aResponse)
419 throws ServletModuleExc, ServletModuleUserExc, ServletModuleFailure {
421 String idParam = aRequest.getParameter("id");
424 throw new ServletModuleExc("Invalid call to delete: no id supplied");
426 Map responseData = ServletHelper.makeGenerationData(aRequest, aResponse, getLocales(aRequest));
428 responseData.put("module", getOperationModuleName());
429 responseData.put("id", idParam);
430 responseData.put("cancelurl", aRequest.getParameter("cancelurl"));
431 responseData.put("okurl", aRequest.getParameter("okurl"));
433 ServletHelper.generateResponse(aResponse.getWriter(), responseData, deleteConfirmationGenerator);
435 catch (Throwable e) {
436 throw new ServletModuleFailure(e);
442 public String defaultAction() {
443 return defaultAction;
447 * Gets the fields from a httprequest and matches them with the metadata from
448 * the storage object. Returns the keys that match, with their values.
450 * @return Map with the values
452 public Map getIntersectingValues(HttpServletRequest aRequest, StorageObject theStorage)
453 throws ServletModuleExc, ServletModuleFailure {
455 HTTPRequestParser parser;
458 parser = new HTTPRequestParser(aRequest);
460 theFieldList = theStorage.getFieldNames();
462 Map withValues = new HashMap();
463 String aField, aValue;
465 for (int i = 0; i < theFieldList.size(); i++) {
466 aField = (String) theFieldList.get(i);
468 aValue = parser.getParameter(aField);
470 withValues.put(aField, aValue);