X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=source%2Fmir%2Fservlet%2FServletModule.java;h=5ddb42da27fd01ee00ed9095afe16dc830203eb6;hb=20c802e7f2f30c5cac3ece603586af684a8b6ab0;hp=0ac4a6cbd3c4bd36f00cf575c28aee3ea5351440;hpb=d4b09f3c9ce5f22936748ff38e21200ece577433;p=mir.git
diff --git a/source/mir/servlet/ServletModule.java b/source/mir/servlet/ServletModule.java
index 0ac4a6cb..5ddb42da 100755
--- a/source/mir/servlet/ServletModule.java
+++ b/source/mir/servlet/ServletModule.java
@@ -1,351 +1,534 @@
-/*
- * put your module comment here
- *
- */
-
-
-package mir.servlet;
-
-import java.io.*;
-import java.lang.*;
-import java.util.*;
-import javax.servlet.http.*;
-import freemarker.template.*;
-import mir.storage.*;
-import mir.servlet.ServletModuleException;
-import mir.misc.*;
-import mir.entity.*;
-import mir.module.*;
-import mir.misc.*;
-
-
-/**
- * Abstrakte Klasse ServletModule stellt die Basisfunktionalitaet der
- * abgeleiteten ServletModule zur Verfügung.
- *
- * @version 28.6.1999
- * @author RK
- */
-
-public abstract class ServletModule {
-
- public String defaultAction;
- protected Logfile theLog;
- protected AbstractModule mainModule;
- protected String templateListString;
- protected String templateObjektString;
- protected String templateConfirmString;
-
- /**
- * Singelton - Methode muss in den abgeleiteten Klassen ueberschrieben werden.
- * @return ServletModule
- */
- public static ServletModule getInstance() { return null; }
-
- /**
- * get the session binded language
- */
- public String getLanguage(HttpServletRequest req){
- HttpSession session = req.getSession();
- String language = (String)session.getAttribute("Language");
- if(language==null){
- language=Configuration.getProperty("StandardLanguage");
- }
- return language;
- }
-
- // ACHTUNG DEPRECATED::::
- public void process(HttpServletRequest req, HttpServletResponse res) throws ServletModuleException {}
-
-
-
- /**
- * list(req,res) - generische Listmethode. Wennn die Funktionalitaet
- * nicht reicht, muss sie in der abgeleiteten ServletModule-Klasse
- * ueberschreiben werden.
- *
- * @param req Http-Request, das vom Dispatcher durchgereicht wird
- * @param res Http-Response, die vom Dispatcher durchgereicht wird
- */
- public void list(HttpServletRequest req, HttpServletResponse res)
- throws ServletModuleException {
- try {
- EntityList theList;
- String offsetParam = req.getParameter("offset");
- int offset=0;
- PrintWriter out = res.getWriter();
-
- // hier offsetcode bearbeiten
- if (offsetParam != null && !offsetParam.equals("")){
- offset = Integer.parseInt(offsetParam);
- }
- if (req.getParameter("next") != null){
- offset=Integer.parseInt(req.getParameter("nextoffset"));
- } else {
- if (req.getParameter("prev") != null){
- offset = Integer.parseInt(req.getParameter("prevoffset"));
- }
- }
- theList = mainModule.getByWhereClause(null, offset);
- //theList = mainModule.getByWhereClause((String)null, offset);
- if (theList == null || theList.getCount() == 0 || theList.getCount()>1){
- HTMLTemplateProcessor.process(getLanguage(req)+"/"+templateListString, theList, out);
- } else {
- deliver(req, res, theList.elementAt(0), templateObjektString);
- }
- } catch (Exception e) {
- throw new ServletModuleException(e.toString());
- }
- }
-
- /**
- * add(req,res) - generische Addmethode. Wennn die Funktionalitaet
- * nicht reicht, muss sie in der abgeleiteten ServletModule-Klasse
- * ueberschreiben werden.
- * @param req Http-Request, das vom Dispatcher durchgereicht wird
- * @param res Http-Response, die vom Dispatcher durchgereicht wird
- */
- public void add(HttpServletRequest req, HttpServletResponse res)
- throws ServletModuleException {
-
- try {
- SimpleHash mergeData = new SimpleHash();
- mergeData.put("new", "1");
- deliver(req, res, mergeData, templateObjektString);
- } catch (Exception e) {
- throw new ServletModuleException(e.toString());
- }
- }
-
- /**
- * insert(req,res) - generische Insertmethode, folgt auf add.
- * Wennn die Funktionalitaet
- * nicht reicht, muss sie in der abgeleiteten ServletModule-Klasse
- * ueberschreiben werden.
- *
- * @param req Http-Request, das vom Dispatcher durchgereicht wird
- * @param res Http-Response, die vom Dispatcher durchgereicht wird
- */
- public void insert(HttpServletRequest req, HttpServletResponse res)
- throws ServletModuleException {
- try {
- HashMap withValues = getIntersectingValues(req, mainModule.getStorageObject());
- String id = mainModule.add(withValues);
- // theLog.printDebugInfo("--trying to deliver..."+id);
- list(req,res);
- //deliver(req, res, mainModule.getById(id), templateObjektString);
- }
- catch (Exception e) { throw new ServletModuleException(e.toString());}
- }
-
-/**
- * delete(req,res) - generische Deletemethode. Wennn die Funktionalitaet
- * nicht reicht, muss sie in der abgeleiteten ServletModule-Klasse
- * ueberschreiben werden.
- *
- * @param req Http-Request, das vom Dispatcher durchgereicht wird
- * @param res Http-Response, die vom Dispatcher durchgereicht wird
- */
-
- public void delete(HttpServletRequest req, HttpServletResponse res)
- throws ServletModuleException
- {
- try {
- String idParam = req.getParameter("id");
- if (idParam == null) throw new ServletModuleException("Falscher Aufruf: (id) nicht angegeben");
- // Hier code zum Loeschen
- String confirmParam = req.getParameter("confirm");
- String cancelParam = req.getParameter("cancel");
- if (confirmParam == null && cancelParam == null) {
- // HTML Ausgabe zum Confirmen!
- SimpleHash mergeData = new SimpleHash();
- String moduleClassName = mainModule.getClass().getName();
- int i = moduleClassName.indexOf(".Module");
- String moduleName = moduleClassName.substring(i+7);
- mergeData.put("module", moduleName);
- mergeData.put("infoString", moduleName + ": " + idParam);
- mergeData.put("id", idParam);
- mergeData.put("where", req.getParameter("where"));
- mergeData.put("order", req.getParameter("order"));
- mergeData.put("offset", req.getParameter("offset"));
- deliver(req, res, mergeData,templateConfirmString);
- } else {
- if (confirmParam!= null && !confirmParam.equals("")) {
- //theLog.printInfo("delete confirmed!");
- mainModule.deleteById(idParam);
- list(req,res); // back to list
- } else {
- if (req.getParameter("where") != null)
- list(req,res);
- else
- edit(req,res);
- }
- }
- } catch (Exception e) {
- throw new ServletModuleException(e.toString());
- }
- }
-
- /**
- * edit(req,res) - generische Editmethode. Wennn die Funktionalitaet
- * nicht reicht, muss sie in der abgeleiteten ServletModule-Klasse
- * ueberschreiben werden.
- *
- * @param req Http-Request, das vom Dispatcher durchgereicht wird
- * @param res Http-Response, die vom Dispatcher durchgereicht wird
- */
- public void edit(HttpServletRequest req, HttpServletResponse res)
- throws ServletModuleException {
- try {
- String idParam = req.getParameter("id");
- deliver(req, res, mainModule.getById(idParam), templateObjektString);
- } catch(ModuleException e) {
- throw new ServletModuleException(e.toString());
- }
- }
-
-/**
- * update(req,res) - generische Updatemethode. Wennn die Funktionalitaet
- * nicht reicht, muss sie in der abgeleiteten ServletModule-Klasse
- * ueberschreiben werden.
- *
- * @param req Http-Request, das vom Dispatcher durchgereicht wird
- * @param res Http-Response, die vom Dispatcher durchgereicht wird
- */
-
- public void update(HttpServletRequest req, HttpServletResponse res)
- throws ServletModuleException {
- try {
- String idParam = req.getParameter("id");
- HashMap withValues = getIntersectingValues(req, mainModule.getStorageObject());
- String id = mainModule.set(withValues);
- //theLog.printInfo("Showing Entity with id: " + id);
- //edit(req,res);
- String whereParam = req.getParameter("where");
- String orderParam = req.getParameter("order");
- if ((whereParam!=null && !whereParam.equals("")) || (orderParam!=null && !orderParam.equals(""))){
- //theLog.printDebugInfo("update to list");
- list(req,res);
- } else {
- edit(req, res);
- }
- //list(req,res);
- } catch (Exception e) {
- throw new ServletModuleException(e.toString());
- }
- }
-
- // Hilfsprozeduren
- /**
- public void predeliver(HttpServletResponse res, TemplateModelRoot rtm, String tmpl)
- throws ServletModuleException {
- try {
- PrintWriter out = new LineFilterWriter(res.getWriter());
- StringWriter a = new StringWriter();
- deliver(new PrintWriter(a),rtm,tmpl);
- out.write(a.toString());
- out.flush();
- } catch (Exception e) {
- e.printStackTrace();System.err.println(e.toString());
- }
- }
- */
-
- /**
- * deliver liefert das Template mit dem Filenamen templateFilename
- * an den HttpServletResponse res aus, nachdem es mit den Daten aus
- * TemplateModelRoot rtm gemischt wurde
- *
- * @param res Http-Response, die vom Dispatcher durchgereicht wird
- * @param rtm beinahalten das freemarker.template.TempalteModelRoot mit den
- * Daten, die ins Template gemerged werden sollen.
- * @param tmpl Name des Templates
- * @exception ServletModuleException
- */
- public void deliver(HttpServletRequest req, HttpServletResponse res, TemplateModelRoot rtm, String templateFilename)
- throws ServletModuleException {
- if (rtm == null) rtm = new SimpleHash();
- try {
- //PrintWriter out = new LineFilterWriter(res.getWriter());
- PrintWriter out = res.getWriter();
- HTMLTemplateProcessor.process(getLanguage(req)+"/"+templateFilename, rtm , out);
- out.close();
- } catch (HTMLParseException e) {
- throw new ServletModuleException(e.toString());
- } catch (IOException e) {
- throw new ServletModuleException(e.toString());
- }
- }
- /**
- * deliver liefert das Template mit dem Filenamen templateFilename
- * an den HttpServletResponse res aus, nachdem es mit den Daten aus
- * TemplateModelRoot rtm gemischt wurde
- *
- * @param res Http-Response, die vom Dispatcher durchgereicht wird
- * @param entity Entity, aus der die Daten, die ins Template gemerged werden sollen.
- * @param tmpl Name des Templates
- * @exception ServletModuleException
- */
- public void deliver(HttpServletRequest req, HttpServletResponse res, Entity ent, String templateFilename)
- throws ServletModuleException {
- deliver(req, res,HTMLTemplateProcessor.makeSimpleHash(ent), templateFilename);
- }
- /**
- * deliver liefert das Template mit dem Filenamen templateFilename
- * an den HttpServletResponse res aus, nachdem es mit den Daten aus
- * TemplateModelRoot rtm gemischt wurde
- *
- * @param out ist der OutputStream, in den die gergten Daten geschickt werden sollen.
- * @param rtm beinahalten das freemarker.template.TempalteModelRoot mit den
- * Daten, die ins Template gemerged werden sollen.
- * @param tmpl Name des Templates
- * @exception ServletModuleException
- */
- private void deliver(HttpServletRequest req, PrintWriter out, TemplateModelRoot rtm, String templateFilename)
- throws HTMLParseException {
- HTMLTemplateProcessor.process(getLanguage(req)+"/"+templateFilename, rtm , out);
- }
-
- /**
- * Wenn die abgeleitete Klasse diese Methode ueberschreibt und einen String mit einem
- * Methodennamen zurueckliefert, dann wird diese Methode bei fehlender Angabe des
- * doParameters ausgefuehrt.
- *
- * @return Name der Default-Action
- */
- public String defaultAction() { return defaultAction; }
-
- /**
- * Hier kann vor der Datenaufbereitung schon mal ein response geschickt
- * werden (um das subjektive Antwortverhalten bei langsamen Verbindungen
- * zu verbessern).
- */
- public void predeliver(HttpServletRequest req, HttpServletResponse res) { ; }
-
- /**
- * Holt die Felder aus der Metadatenfelderliste des StorageObjects, die
- * im HttpRequest vorkommen und liefert sie als HashMap zurueck
- *
- * @return HashMap mit den Werten
- */
- public HashMap getIntersectingValues(HttpServletRequest req, StorageObject theStorage)
- throws ServletModuleException {
- ArrayList theFieldList;
- try {
- theFieldList = theStorage.getFields();
- } catch (StorageObjectException e) {
- throw new ServletModuleException("ServletModule.getIntersectingValues: " + e.toString());
- }
-
- HashMap withValues = new HashMap();
- String aField, aValue;
-
- for(int i=0; i
Description:
+ *Copyright: Copyright (c) 2003
+ *Company:
+ * @author not attributable + * @version 1.0 + */ + +public abstract class ServletModule { + public String defaultAction; + protected LoggerWrapper logger; + protected MirPropertiesConfiguration configuration; + protected Locale fallbackLocale; + + protected AbstractModule mainModule; + protected String definition; + protected EntityAdapterModel model; + + protected String listGenerator; + protected String editGenerator; + protected String deleteConfirmationGenerator; + protected int nrEntitiesPerListPage; + + + public ServletModule(){ + definition = null; + model = null; + + try { + configuration = MirPropertiesConfiguration.instance(); + } + catch (PropertiesConfigExc e) { + throw new RuntimeException("Can't get configuration: " + e.getMessage()); + } + + listGenerator = configuration.getString("ServletModule."+getOperationModuleName()+".ListTemplate"); + editGenerator = configuration.getString("ServletModule."+getOperationModuleName()+".EditTemplate"); + deleteConfirmationGenerator = configuration.getString("ServletModule."+getOperationModuleName()+".DeleteConfirmationTemplate"); + nrEntitiesPerListPage = + configuration.getInt("ServletModule."+getOperationModuleName()+".ListSize", + configuration.getInt("ServletModule.Default.ListSize", 20)); + + fallbackLocale = new Locale(configuration.getString("Mir.Admin.FallbackLanguage", "en"), ""); + } + + + /** + * Singleton instance retrievel method. MUST be overridden in subclasses. + * + * @return ServletModule the single instance of the servletmodule class + */ + public static ServletModule getInstance() { + return null; + } + + /** + * Get the module name + * + * @return + */ + protected String getOperationModuleName() { + return getClass().getName().substring((new String("mircoders.servlet.ServletModule")).length()); + } + + /** + * get the locale either from the session or the accept-language header ot the request + * this supersedes getLanguage for the new i18n + */ + public Locale getLocale(HttpServletRequest aRequest) { + Locale loc = null; + HttpSession session = aRequest.getSession(false); + if (session != null) { + // session can be null in case of logout + loc = (Locale) session.getAttribute("locale"); + } + // if there is nothing in the session get it fron the accept-language + if (loc == null) { + loc = aRequest.getLocale(); + } + return loc; + } + + /** + * get the locale either from the session or the accept-language header ot the request + * this supersedes getLanguage for the new i18n + */ + public Locale getFallbackLocale(HttpServletRequest aRequest) { + return fallbackLocale; + } + + /** + * Function to specify the default ordering for lists. May be overridden. + * + * + * @return + */ + public String getDefaultListOrdering() { + + if (mainModule!=null && mainModule.getStorageObject()!=null){ + if (mainModule.getStorageObject().getFields().contains("webdb_create")) + return "webdb_create desc"; + } + + return "id asc"; + } + + /** + * + * @param aResponse + * @param aQuery + * @throws ServletModuleExc + * @throws ServletModuleFailure + */ + public void redirect(HttpServletResponse aResponse, String aQuery) throws ServletModuleExc, ServletModuleFailure { + try { + aResponse.sendRedirect(aResponse.encodeRedirectURL(MirPropertiesConfiguration.instance().getString("RootUri") + "/Mir?"+aQuery)); + } + catch (Throwable t) { + throw new ServletModuleFailure("ServletModule.redirect: " +t.getMessage(), t); + } + } + + /** + * Generic list method + * + * @param aRequest + * @param aResponse + * @throws ServletModuleExc + * @throws ServletModuleUserExc + * @throws ServletModuleFailure + */ + + public void list(HttpServletRequest aRequest, HttpServletResponse aResponse) throws ServletModuleExc + { + HTTPRequestParser requestParser = new HTTPRequestParser(aRequest); + + String where = requestParser.getParameter("where"); + String order = requestParser.getParameterWithDefault("order", getDefaultListOrdering()); + int offset = requestParser.getIntegerWithDefault("offset", 0); + + returnList(aRequest, aResponse, where, order, offset); + } + + + public void returnList(HttpServletRequest aRequest, HttpServletResponse aResponse, + String aWhereClause, String anOrderByClause, int anOffset) throws ServletModuleExc { + + HTTPRequestParser requestParser = new HTTPRequestParser(aRequest); + URLBuilder urlBuilder = new URLBuilder(); + int count; + + try { + Map responseData = ServletHelper.makeGenerationData(aRequest, aResponse, new Locale[] { getLocale(aRequest), getFallbackLocale(aRequest)}); + + List list = + EntityAdapterEngine.retrieveAdapterList(model, definition, aWhereClause, anOrderByClause, nrEntitiesPerListPage, anOffset); + + responseData.put("nexturl", null); + responseData.put("prevurl", null); + responseData.put("module", getOperationModuleName()); + + count=mainModule.getSize(aWhereClause); + + urlBuilder.setValue("module", getOperationModuleName()); + urlBuilder.setValue("do", "list"); + urlBuilder.setValue("where", aWhereClause); + urlBuilder.setValue("order", anOrderByClause); + + urlBuilder.setValue("searchfield", requestParser.getParameter("searchfield")); + urlBuilder.setValue("searchtext", requestParser.getParameter("searchtext")); + urlBuilder.setValue("searchispublished", requestParser.getParameter("searchispublished")); + urlBuilder.setValue("searchstatus", requestParser.getParameter("searchstatus")); + urlBuilder.setValue("searchorder", requestParser.getParameter("searchorder")); + + responseData.put("searchfield", requestParser.getParameter("searchfield")); + responseData.put("searchtext", requestParser.getParameter("searchtext")); + responseData.put("searchispublished", requestParser.getParameter("searchispublished")); + responseData.put("searchstatus", requestParser.getParameter("searchstatus")); + responseData.put("searchorder", requestParser.getParameter("searchorder")); + + urlBuilder.setValue("offset", anOffset); + responseData.put("offset" , new Integer(anOffset).toString()); + responseData.put("thisurl" , urlBuilder.getQuery()); + + if (count>anOffset+nrEntitiesPerListPage) { + urlBuilder.setValue("offset", anOffset + nrEntitiesPerListPage); + responseData.put("nexturl" , urlBuilder.getQuery()); + } + + if (anOffset>0) { + urlBuilder.setValue("offset", Math.max(anOffset - nrEntitiesPerListPage, 0)); + responseData.put("prevurl" , urlBuilder.getQuery()); + } + + responseData.put("entities", list); + responseData.put("from" , Integer.toString(anOffset+1)); + responseData.put("count", Integer.toString(count)); + responseData.put("to", Integer.toString(Math.min(anOffset+nrEntitiesPerListPage, count))); + + ServletHelper.generateResponse(aResponse.getWriter(), responseData, listGenerator); + } + catch (Throwable e) { + throw new ServletModuleFailure(e); + } + } + + public void editObject(HttpServletRequest aRequest, HttpServletResponse aResponse, String anId) throws ServletModuleExc { + try { + editObject(aRequest, aResponse, model.makeEntityAdapter(definition, mainModule.getById(anId)), false, anId); + } + catch (Throwable t) { + throw new ServletModuleFailure(t); + } + } + + public void editObject(HttpServletRequest aRequest, HttpServletResponse aResponse, Object anObject, boolean anIsNew, String anId) throws ServletModuleExc { + HTTPRequestParser requestParser = new HTTPRequestParser(aRequest); + URLBuilder urlBuilder = new URLBuilder(); + EntityAdapterModel model; + + try { + Map responseData = ServletHelper.makeGenerationData(aRequest, aResponse, new Locale[] { getLocale(aRequest), getFallbackLocale(aRequest)}); + + responseData.put("module", getOperationModuleName()); + responseData.put("entity", anObject); + responseData.put("new", new Boolean(anIsNew)); + + + urlBuilder.setValue("module", getOperationModuleName()); + urlBuilder.setValue("returnurl", requestParser.getParameter("returnurl")); + if (anIsNew) + urlBuilder.setValue("do", "add"); + else { + urlBuilder.setValue("id", anId); + urlBuilder.setValue("do", "edit"); + } + responseData.put("returnurl", requestParser.getParameter("returnurl")); + responseData.put("thisurl", urlBuilder.getQuery()); + + ServletHelper.generateResponse(aResponse.getWriter(), responseData, editGenerator); + } + catch (Throwable e) { + throw new ServletModuleFailure(e); + } + } + + + /** + * Generic add method + * + * @param aRequest + * @param aResponse + * @throws ServletModuleExc + * @throws ServletModuleUserExc + * @throws ServletModuleFailure + */ + public void add(HttpServletRequest aRequest, HttpServletResponse aResponse) + throws ServletModuleExc, ServletModuleUserExc, ServletModuleFailure { + + Map object = new HashMap(); + + Iterator i = mainModule.getStorageObject().getFields().iterator(); + + while (i.hasNext()) + object.put(i.next(), ""); + + initializeNewObject(object, aRequest, aResponse); + + editObject(aRequest, aResponse, object, true, null); + } + + protected void initializeNewObject(Map aNewObject, HttpServletRequest aRequest, HttpServletResponse aResponse) { + } + + /** + * Method called when the user edits an object. + * + * @param aRequest + * @param aResponse + * @throws ServletModuleExc + * @throws ServletModuleUserExc + * @throws ServletModuleFailure + */ + public void edit(HttpServletRequest aRequest, HttpServletResponse aResponse) throws ServletModuleExc, ServletModuleUserExc, ServletModuleFailure { + edit(aRequest, aResponse, aRequest.getParameter("id")); + } + + /** + * Generic edit method + * + * @param aRequest + * @param aResponse + * @param anIdentifier + * @throws ServletModuleExc + * @throws ServletModuleUserExc + * @throws ServletModuleFailure + */ + public void edit(HttpServletRequest aRequest, HttpServletResponse aResponse, String anIdentifier) + throws ServletModuleExc, ServletModuleUserExc, ServletModuleFailure { + try { + editObject(aRequest, aResponse, model.makeEntityAdapter(definition, mainModule.getById(anIdentifier)), false, anIdentifier); + } + catch (Throwable e) { + throw new ServletModuleFailure(e); + } + } + + /** + * Generic update method + * + * @param aRequest + * @param aResponse + * @throws ServletModuleExc + * @throws ServletModuleUserExc + * @throws ServletModuleFailure + */ + public void update(HttpServletRequest aRequest, HttpServletResponse aResponse) + throws ServletModuleExc, ServletModuleUserExc, ServletModuleFailure { + try { + HTTPRequestParser requestParser = new HTTPRequestParser(aRequest); + + String id = aRequest.getParameter("id"); + Map withValues = getIntersectingValues(aRequest, mainModule.getStorageObject()); + mainModule.set(withValues); + + String returnUrl = requestParser.getParameter("returnurl"); + + if (returnUrl!=null) { + redirect(aResponse, returnUrl); + } + else { + edit(aRequest, aResponse, id); + } + } + catch (Throwable e) { + throw new ServletModuleFailure(e); + } + } + + /** + * Generic insert method + * + * @param aRequest + * @param aResponse + * @throws ServletModuleExc + * @throws ServletModuleUserExc + * @throws ServletModuleFailure + */ + public void insert(HttpServletRequest aRequest, HttpServletResponse aResponse) + throws ServletModuleExc, ServletModuleUserExc, ServletModuleFailure { + try { + HTTPRequestParser requestParser = new HTTPRequestParser(aRequest); + + Map object = getIntersectingValues(aRequest, mainModule.getStorageObject()); + + String id = processInstertedObject(object, aRequest, aResponse); + + String returnUrl = requestParser.getParameter("returnurl"); + + if (returnUrl!=null) { + redirect(aResponse, returnUrl); + } + else { + edit(aRequest, aResponse, id); + } + } + catch (Throwable e) { + throw new ServletModuleFailure(e); + } + } + + public String processInstertedObject(Map anObject, HttpServletRequest aRequest, HttpServletResponse aResponse) { + try { + return mainModule.add(anObject); + } + catch (Throwable t) { + throw new ServletModuleFailure(t); + } + }; + + /** + * + * @param aRequest + * @param aResponse + */ + public void confirmdelete(HttpServletRequest aRequest, HttpServletResponse aResponse) { + try { + String idParam = aRequest.getParameter("id"); + String confirmParam = aRequest.getParameter("confirm"); + String cancelParam = aRequest.getParameter("cancel"); + + if (confirmParam != null && !confirmParam.equals("")) { + mainModule.deleteById(idParam); + redirect(aResponse, aRequest.getParameter("okurl")); + } + else + redirect(aResponse, aRequest.getParameter("cancelurl")); + } + catch (Throwable t) { + throw new ServletModuleFailure(t); + } + } + + /** + * + * @param aRequest + * @param aResponse + * @throws ServletModuleExc + * @throws ServletModuleUserExc + * @throws ServletModuleFailure + */ + public void delete(HttpServletRequest aRequest, HttpServletResponse aResponse) + throws ServletModuleExc, ServletModuleUserExc, ServletModuleFailure { + try { + String idParam = aRequest.getParameter("id"); + + if (idParam == null) + throw new ServletModuleExc("Invalid call to delete: no id supplied"); + + Map responseData = ServletHelper.makeGenerationData(aRequest, aResponse, new Locale[] { getLocale(aRequest), getFallbackLocale(aRequest)}); + + responseData.put("module", getOperationModuleName()); + responseData.put("id", idParam); + responseData.put("cancelurl", aRequest.getParameter("cancelurl")); + responseData.put("okurl", aRequest.getParameter("okurl")); + + ServletHelper.generateResponse(aResponse.getWriter(), responseData, deleteConfirmationGenerator); + } + catch (Throwable e) { + throw new ServletModuleFailure(e); + } + } + + /** + * Wenn die abgeleitete Klasse diese Methode ueberschreibt und einen String mit einem + * Methodennamen zurueckliefert, dann wird diese Methode bei fehlender Angabe des + * doParameters ausgefuehrt. + * + * @return Name der Default-Action + */ + public String defaultAction() { + return defaultAction; + } + + /** + * Gets the fields from a httprequest and matches them with the metadata from + * the storage object. Returns the keys that match, with their values. + * + * @return Map with the values + */ + public Map getIntersectingValues(HttpServletRequest aRequest, StorageObject theStorage) + throws ServletModuleExc, ServletModuleFailure { + + try { + HTTPRequestParser parser; + List theFieldList; + + parser = new HTTPRequestParser(aRequest); + + theFieldList = theStorage.getFields(); + + Map withValues = new HashMap(); + String aField, aValue; + + for (int i = 0; i < theFieldList.size(); i++) { + aField = (String) theFieldList.get(i); + + aValue = parser.getParameter(aField); + if (aValue != null) + withValues.put(aField, aValue); + } + return withValues; + } + catch (Throwable e) { + e.printStackTrace(logger.asPrintWriter(LoggerWrapper.DEBUG_MESSAGE)); + + throw new ServletModuleFailure( "ServletModule.getIntersectingValues: " + e.getMessage(), e); + } + } +} \ No newline at end of file