Changeset 32996


Ignore:
Timestamp:
2019-04-09T09:59:11+12:00 (5 years ago)
Author:
kjdon
Message:

re-indented the code

File:
1 edited

Legend:

Unmodified
Added
Removed

  • main/trunk/greenstone3/src/java/org/greenstone/gsdl3/action/PageAction.java

    r32991 r32996  
    2020{
    2121 
    22     static Logger logger = Logger.getLogger(org.greenstone.gsdl3.action.PageAction.class.getName());
    23 
    24         public static final String HOME_PAGE = "home";
    25     public static final String ABOUT_PAGE = "about";
    26     public static final String PREFS_PAGE = "pref";
    27     public static final String GLI4GS3_PAGE = "gli4gs3";
     22  static Logger logger = Logger.getLogger(org.greenstone.gsdl3.action.PageAction.class.getName());
     23
     24  public static final String HOME_PAGE = "home";
     25  public static final String ABOUT_PAGE = "about";
     26  public static final String PREFS_PAGE = "pref";
     27  public static final String GLI4GS3_PAGE = "gli4gs3";
    2828  public static final String VERIFY_PAGE = "verify";
    2929
    … …  
    3131  protected String groupInfoServiceName = null;
    3232
    33     public Node process(Node message_node)
     33  public Node process(Node message_node)
    3434   
    35     {
    36         Element message = GSXML.nodeToElement(message_node);
    37         Document doc = XMLConverter.newDOM();
     35  {
     36    Element message = GSXML.nodeToElement(message_node);
     37    Document doc = XMLConverter.newDOM();
    3838       
    39         Element request = (Element) GSXML.getChildByTagName(message, GSXML.REQUEST_ELEM);
    40         Element paramList = (Element) GSXML.getChildByTagName(request, GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
    41         String collection = "";
    42         if (paramList != null)
    43         {
    44             HashMap<String, Serializable> params = GSXML.extractParams(paramList, false);
    45             if (params != null && params.get(GSParams.COLLECTION) != null)
    46             {
    47                 collection = (String) params.get(GSParams.COLLECTION);
    48             }
    49         }
    50 
    51         // the page name is the subaction
    52         String page_name = request.getAttribute(GSXML.SUBACTION_ATT);
    53         if (page_name.equals(""))
    54         { // if no page specified, assume home page
    55             page_name = HOME_PAGE;
    56         }
    57 
    58         Element result = doc.createElement(GSXML.MESSAGE_ELEM);
    59         Element response;
    60         if (page_name.equals(HOME_PAGE))
    61         {
    62           response = homePage(request);
     39    Element request = (Element) GSXML.getChildByTagName(message, GSXML.REQUEST_ELEM);
     40    Element paramList = (Element) GSXML.getChildByTagName(request, GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
     41    String collection = "";
     42    if (paramList != null)
     43      {
     44    HashMap<String, Serializable> params = GSXML.extractParams(paramList, false);
     45    if (params != null && params.get(GSParams.COLLECTION) != null)
     46      {
     47        collection = (String) params.get(GSParams.COLLECTION);
     48      }
     49      }
     50
     51    // the page name is the subaction
     52    String page_name = request.getAttribute(GSXML.SUBACTION_ATT);
     53    if (page_name.equals(""))
     54      { // if no page specified, assume home page
     55    page_name = HOME_PAGE;
     56      }
     57
     58    Element result = doc.createElement(GSXML.MESSAGE_ELEM);
     59    Element response;
     60    if (page_name.equals(HOME_PAGE))
     61      {
     62    response = homePage(request);
    6363           
    64         }
    65         else if (page_name.equals(GLI4GS3_PAGE))
    66         {
    67           response = gli4gs3Page(request);
    68         } else  if (collection.equals("")) {
    69           // we are not in a collection. eg could be library prefs or other page
    70           response = generalLibraryPage(request, page_name);
    71         } else {
    72           // we are in a collection
    73           response = collectionPage(request, page_name, collection);
    74         }
    75        
    76 
    77         result.appendChild(doc.importNode(response, true));
    78         logger.debug("page action result: " + this.converter.getPrettyString(result));
    79 
    80         return result;
    81     }
     64      }
     65    else if (page_name.equals(GLI4GS3_PAGE))
     66      {
     67    response = gli4gs3Page(request);
     68      } else    if (collection.equals("")) {
     69      // we are not in a collection. eg could be library prefs or other page
     70      response = generalLibraryPage(request, page_name);
     71    } else {
     72      // we are in a collection
     73      response = collectionPage(request, page_name, collection);
     74    }
     75       
     76
     77    result.appendChild(doc.importNode(response, true));
     78    logger.debug("page action result: " + this.converter.getPrettyString(result));
     79
     80    return result;
     81  }
    8282
    8383  // A general library page just adds site metadata and interface options.
    … …  
    173173
    174174  protected Element homePage(Element request)
    175     {
    176       Document doc = XMLConverter.newDOM();
    177 
    178         UserContext userContext = new UserContext(request);
    179         // first, get the message router info
    180         Element info_message = doc.createElement(GSXML.MESSAGE_ELEM);
    181         Element info_request = GSXML.createBasicRequest(doc, GSXML.REQUEST_TYPE_DESCRIBE, "", userContext);
    182         //Create param list
    183         Element param_list_element = doc.createElement(GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
    184         info_request.appendChild(param_list_element);
    185         //Describe params without collectionlist. Collectionlist provided by CollectionGroup service
    186         GSXML.addParameterToList(param_list_element, GSXML.SUBSET_PARAM, GSXML.CLUSTER_ELEM + GSXML.LIST_MODIFIER);
    187         GSXML.addParameterToList(param_list_element, GSXML.SUBSET_PARAM, GSXML.SERVICE_ELEM + GSXML.LIST_MODIFIER);
    188         GSXML.addParameterToList(param_list_element, GSXML.SUBSET_PARAM, GSXML.SITE_ELEM + GSXML.LIST_MODIFIER);
    189         GSXML.addParameterToList(param_list_element, GSXML.SUBSET_PARAM, GSXML.METADATA_ELEM + GSXML.LIST_MODIFIER);
    190         GSXML.addParameterToList(param_list_element, GSXML.SUBSET_PARAM, GSXML.DISPLAY_TEXT_ELEM + GSXML.LIST_MODIFIER);
    191         info_message.appendChild(info_request);
    192         //Send request to message router
    193         Element info_response_message = (Element) this.mr.process(info_message);
    194         //Check if it is not null
    195         if (info_response_message == null)
    196         {
    197             logger.error(" couldn't query the message router!");
    198             return null;
    199         }
    200         //Check if it is not null
    201         Element info_response = (Element) GSXML.getChildByTagName(info_response_message, GSXML.RESPONSE_ELEM);
    202         if (info_response == null)
    203         {
    204             logger.error("couldn't query the message router!");
    205             return null;
    206         }
    207 
    208         // import it into our current doc.
    209         info_response = (Element) doc.importNode(info_response, true);
    210        
    211         Element resp_service_list = (Element) GSXML.getChildByTagName(info_response, GSXML.SERVICE_ELEM + GSXML.LIST_MODIFIER);
    212 
    213         // TODO - is this true? can we run with no MR services? can't we still query for the collections/MR info?
    214         if (resp_service_list == null) {
    215             logger.error("No services available. Couldn't query the message router!");
    216             return null;
    217         }
    218 
    219         // if we haven't done so already, check for group info type service
    220         if (this.groupInfoServiceName ==  null) {
    221 
    222           Element groupInfoService = GSXML.getNamedElement(resp_service_list, GSXML.SERVICE_ELEM, GSXML.NAME_ATT,
    223                                    CollectionGroups.GROUP_CONTENT);
     175  {
     176    Document doc = XMLConverter.newDOM();
     177
     178    UserContext userContext = new UserContext(request);
     179    // first, get the message router info
     180    Element info_message = doc.createElement(GSXML.MESSAGE_ELEM);
     181    Element info_request = GSXML.createBasicRequest(doc, GSXML.REQUEST_TYPE_DESCRIBE, "", userContext);
     182    //Create param list
     183    Element param_list_element = doc.createElement(GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
     184    info_request.appendChild(param_list_element);
     185    //Describe params without collectionlist. Collectionlist provided by CollectionGroup service
     186    GSXML.addParameterToList(param_list_element, GSXML.SUBSET_PARAM, GSXML.CLUSTER_ELEM + GSXML.LIST_MODIFIER);
     187    GSXML.addParameterToList(param_list_element, GSXML.SUBSET_PARAM, GSXML.SERVICE_ELEM + GSXML.LIST_MODIFIER);
     188    GSXML.addParameterToList(param_list_element, GSXML.SUBSET_PARAM, GSXML.SITE_ELEM + GSXML.LIST_MODIFIER);
     189    GSXML.addParameterToList(param_list_element, GSXML.SUBSET_PARAM, GSXML.METADATA_ELEM + GSXML.LIST_MODIFIER);
     190    GSXML.addParameterToList(param_list_element, GSXML.SUBSET_PARAM, GSXML.DISPLAY_TEXT_ELEM + GSXML.LIST_MODIFIER);
     191    info_message.appendChild(info_request);
     192    //Send request to message router
     193    Element info_response_message = (Element) this.mr.process(info_message);
     194    //Check if it is not null
     195    if (info_response_message == null)
     196      {
     197    logger.error(" couldn't query the message router!");
     198    return null;
     199      }
     200    //Check if it is not null
     201    Element info_response = (Element) GSXML.getChildByTagName(info_response_message, GSXML.RESPONSE_ELEM);
     202    if (info_response == null)
     203      {
     204    logger.error("couldn't query the message router!");
     205    return null;
     206      }
     207
     208    // import it into our current doc.
     209    info_response = (Element) doc.importNode(info_response, true);
     210       
     211    Element resp_service_list = (Element) GSXML.getChildByTagName(info_response, GSXML.SERVICE_ELEM + GSXML.LIST_MODIFIER);
     212
     213    // TODO - is this true? can we run with no MR services? can't we still query for the collections/MR info?
     214    if (resp_service_list == null) {
     215      logger.error("No services available. Couldn't query the message router!");
     216      return null;
     217    }
     218
     219    // if we haven't done so already, check for group info type service
     220    if (this.groupInfoServiceName ==  null) {
     221
     222      Element groupInfoService = GSXML.getNamedElement(resp_service_list, GSXML.SERVICE_ELEM, GSXML.NAME_ATT,
     223                               CollectionGroups.GROUP_CONTENT);
    224224         
    225           if (groupInfoService != null) {
    226             this.groupInfoServiceName = CollectionGroups.GROUP_CONTENT;
    227           } else {
    228             this.groupInfoServiceName = "NO_GROUPS";
    229           }
    230         }
    231        
    232         if (!this.groupInfoServiceName.equals("NO_GROUPS")) {
    233           String group = null;
    234           Element cgi_paramList = (Element) GSXML.getChildByTagName(request, GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
    235           HashMap<String, Serializable> params = GSXML.extractParams(cgi_paramList, false);
    236           if (params != null) {
    237             group = (String) params.get(GSParams.GROUP);
    238             if (group != null && group.equals("")) {
    239               group = null;
    240             }
    241           }
     225      if (groupInfoService != null) {
     226    this.groupInfoServiceName = CollectionGroups.GROUP_CONTENT;
     227      } else {
     228    this.groupInfoServiceName = "NO_GROUPS";
     229      }
     230    }
     231       
     232    if (!this.groupInfoServiceName.equals("NO_GROUPS")) {
     233      String group = null;
     234      Element cgi_paramList = (Element) GSXML.getChildByTagName(request, GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
     235      HashMap<String, Serializable> params = GSXML.extractParams(cgi_paramList, false);
     236      if (params != null) {
     237    group = (String) params.get(GSParams.GROUP);
     238    if (group != null && group.equals("")) {
     239      group = null;
     240    }
     241      }
    242242         
    243           Element group_info_response = getGroupInfo(group, userContext);
    244 
    245           // Add all the needed parts of the response to the main page response
    246           Element collection_list = (Element) GSXML.getChildByTagName(group_info_response,
    247                                           GSXML.COLLECTION_ELEM + GSXML.LIST_MODIFIER);
     243      Element group_info_response = getGroupInfo(group, userContext);
     244
     245      // Add all the needed parts of the response to the main page response
     246      Element collection_list = (Element) GSXML.getChildByTagName(group_info_response,
     247                                  GSXML.COLLECTION_ELEM + GSXML.LIST_MODIFIER);
    248248           
    249           if (collection_list != null) {
    250             info_response.appendChild(doc.importNode(collection_list, true));
    251           } else {
    252             logger.warn("Home page had no collection list");
    253           }
    254           Element group_list = (Element) GSXML.getChildByTagName(group_info_response,
    255                                     GSXML.GROUP_ELEM + GSXML.LIST_MODIFIER);
    256           if (group_list != null) {
    257             info_response.appendChild(doc.importNode(group_list, true));
    258           }
    259           Element path_list = (Element) GSXML.getChildByTagName(group_info_response,
    260                                     GSXML.PATH_ELEM + GSXML.LIST_MODIFIER);
    261           if (path_list != null) {
    262             info_response.appendChild(doc.importNode(path_list, true));
    263           }
     249      if (collection_list != null) {
     250    info_response.appendChild(doc.importNode(collection_list, true));
     251      } else {
     252    logger.warn("Home page had no collection list");
     253      }
     254      Element group_list = (Element) GSXML.getChildByTagName(group_info_response,
     255                                GSXML.GROUP_ELEM + GSXML.LIST_MODIFIER);
     256      if (group_list != null) {
     257    info_response.appendChild(doc.importNode(group_list, true));
     258      }
     259      Element path_list = (Element) GSXML.getChildByTagName(group_info_response,
     260                                GSXML.PATH_ELEM + GSXML.LIST_MODIFIER);
     261      if (path_list != null) {
     262    info_response.appendChild(doc.importNode(path_list, true));
     263      }
    264264         
    265         } else {
     265    } else {
    266266         
    267             // If no service with type SERVICE_TYPE_GROUPINFO could be provided
    268             // request message router for all available collections
    269             GSXML.addParameterToList(param_list_element, GSXML.SUBSET_PARAM,
    270                     GSXML.COLLECTION_ELEM + GSXML.LIST_MODIFIER);
    271             info_response_message = (Element) this.mr.process(info_message);
    272 
    273             if (info_response_message == null) {
    274                 logger.error(" couldn't query the message router!");
    275                 return null;
    276             }
    277             info_response = (Element) GSXML.getChildByTagName(info_response_message, GSXML.RESPONSE_ELEM);
    278             if (info_response == null) {
    279                 logger.error("couldn't query the message router!");
    280                 return null;
    281             }
    282         }
    283 
    284         // second, get the metadata for each collection - we only want specific
    285         // elements but for now, we'll just get it all
    286         Element collection_list = (Element) GSXML.getChildByTagName(info_response, GSXML.COLLECTION_ELEM + GSXML.LIST_MODIFIER);
    287         if (collection_list != null)
    288         {
    289             NodeList colls = GSXML.getChildrenByTagName(collection_list, GSXML.COLLECTION_ELEM);
    290             if (colls.getLength() > 0)
    291             {
    292                 sendMultipleRequests(doc, colls, null, GSXML.REQUEST_TYPE_DESCRIBE, userContext);
    293             }
    294         }
    295 
    296         // get metadata for any services
    297         Element service_list = (Element) GSXML.getChildByTagName(info_response, GSXML.SERVICE_ELEM + GSXML.LIST_MODIFIER);
    298         if (service_list != null)
    299         {
    300             NodeList services = GSXML.getChildrenByTagName(service_list, GSXML.SERVICE_ELEM);
    301             if (services.getLength() > 0)
    302             {
    303                 sendMultipleRequests(doc, services, null, GSXML.REQUEST_TYPE_DESCRIBE, userContext);
    304             }
    305         }
    306 
    307         // get metadata for service clusters
    308         Element cluster_list = (Element) GSXML.getChildByTagName(info_response, GSXML.CLUSTER_ELEM + GSXML.LIST_MODIFIER);
    309         if (cluster_list != null)
    310         {
    311             NodeList clusters = GSXML.getChildrenByTagName(cluster_list, GSXML.CLUSTER_ELEM);
    312             if (clusters.getLength() > 0)
    313             {
    314                 sendMultipleRequests(doc, clusters, null, GSXML.REQUEST_TYPE_DESCRIBE, userContext);
    315 
    316             }
    317         }
    318 
    319         addSiteMetadata(info_response, userContext);
    320         addInterfaceOptions(info_response);
    321         // all the components have been merged into info_response
    322         return info_response;
    323 
    324     } // homePage
     267      // If no service with type SERVICE_TYPE_GROUPINFO could be provided
     268      // request message router for all available collections
     269      GSXML.addParameterToList(param_list_element, GSXML.SUBSET_PARAM,
     270                   GSXML.COLLECTION_ELEM + GSXML.LIST_MODIFIER);
     271      info_response_message = (Element) this.mr.process(info_message);
     272
     273      if (info_response_message == null) {
     274    logger.error(" couldn't query the message router!");
     275    return null;
     276      }
     277      info_response = (Element) GSXML.getChildByTagName(info_response_message, GSXML.RESPONSE_ELEM);
     278      if (info_response == null) {
     279    logger.error("couldn't query the message router!");
     280    return null;
     281      }
     282    }
     283
     284    // second, get the metadata for each collection - we only want specific
     285    // elements but for now, we'll just get it all
     286    Element collection_list = (Element) GSXML.getChildByTagName(info_response, GSXML.COLLECTION_ELEM + GSXML.LIST_MODIFIER);
     287    if (collection_list != null)
     288      {
     289    NodeList colls = GSXML.getChildrenByTagName(collection_list, GSXML.COLLECTION_ELEM);
     290    if (colls.getLength() > 0)
     291      {
     292        sendMultipleRequests(doc, colls, null, GSXML.REQUEST_TYPE_DESCRIBE, userContext);
     293      }
     294      }
     295
     296    // get metadata for any services
     297    Element service_list = (Element) GSXML.getChildByTagName(info_response, GSXML.SERVICE_ELEM + GSXML.LIST_MODIFIER);
     298    if (service_list != null)
     299      {
     300    NodeList services = GSXML.getChildrenByTagName(service_list, GSXML.SERVICE_ELEM);
     301    if (services.getLength() > 0)
     302      {
     303        sendMultipleRequests(doc, services, null, GSXML.REQUEST_TYPE_DESCRIBE, userContext);
     304      }
     305      }
     306
     307    // get metadata for service clusters
     308    Element cluster_list = (Element) GSXML.getChildByTagName(info_response, GSXML.CLUSTER_ELEM + GSXML.LIST_MODIFIER);
     309    if (cluster_list != null)
     310      {
     311    NodeList clusters = GSXML.getChildrenByTagName(cluster_list, GSXML.CLUSTER_ELEM);
     312    if (clusters.getLength() > 0)
     313      {
     314        sendMultipleRequests(doc, clusters, null, GSXML.REQUEST_TYPE_DESCRIBE, userContext);
     315
     316      }
     317      }
     318
     319    addSiteMetadata(info_response, userContext);
     320    addInterfaceOptions(info_response);
     321    // all the components have been merged into info_response
     322    return info_response;
     323
     324  } // homePage
    325325
    326326  /** sends a request to GroupCurrentContent service to get group info. null group will give top level info,
    … …  
    368368  }
    369369
    370     protected boolean sendMultipleRequests(Document doc, NodeList items, String path_prefix, String request_type, UserContext userContext)
    371     {
    372         // we will send all the requests in a single message
    373         Element message = doc.createElement(GSXML.MESSAGE_ELEM);
    374         for (int i = 0; i < items.getLength(); i++)
    375         {
    376             Element c = (Element) items.item(i);
    377             String path = c.getAttribute(GSXML.NAME_ATT);
    378             if (path_prefix != null)
    379             {
    380                 path = GSPath.appendLink(path_prefix, path);
    381             }
    382             Element request = GSXML.createBasicRequest(doc, request_type, path, userContext);
    383             message.appendChild(request);
    384         }
    385 
    386         Element response_message = (Element) this.mr.process(message);
    387 
    388         NodeList responses = response_message.getElementsByTagName(GSXML.RESPONSE_ELEM);
    389         // check that have same number of responses as requests
    390         if (items.getLength() != responses.getLength())
    391         {
    392             logger.error("didn't get a response for each request - somethings gone wrong!");
    393             return false;
    394         }
    395 
    396         for (int i = 0; i < items.getLength(); i++)
    397         {
    398             Element c1 = (Element) items.item(i);
    399             Element c2 = (Element) GSXML.getChildByTagName((Element) responses.item(i), c1.getTagName());
    400             if (c1 != null && c2 != null && c1.getAttribute(GSXML.NAME_ATT).endsWith(c2.getAttribute(GSXML.NAME_ATT)))
    401             {
    402                 //add the new data into the original element
    403                 GSXML.mergeElements(c1, c2);
    404             }
    405             else
    406             {
    407                 logger.debug(" response does not correspond to request!");
    408             }
    409 
    410         }
    411 
    412         return true;
    413 
    414     }
    415 
    416     protected Element gli4gs3Page(Element request)
    417     {
    418       Document doc = XMLConverter.newDOM();
    419        
    420         String lang = request.getAttribute(GSXML.LANG_ATT);
    421         String uid = request.getAttribute(GSXML.USER_ID_ATT);
    422 
    423         Element page_response = doc.createElement(GSXML.RESPONSE_ELEM);
    424 
    425         Element applet_elem = doc.createElement("Applet");
    426         page_response.appendChild(applet_elem);
    427         applet_elem.setAttribute("ARCHIVE", "SignedGatherer.jar"); // SignedGatherer.jar should be placed in web/applet.
    428         applet_elem.setAttribute("CODE", "org.greenstone.gatherer.WebGatherer");
    429         applet_elem.setAttribute("CODEBASE", "applet"); // SignedGatherer.jar is in web/applet. But CODEBASE is the *URL* path to the (jar) file containing the main class, and is relative to documentroot "web".
    430         applet_elem.setAttribute("HEIGHT", "50");
    431         applet_elem.setAttribute("WIDTH", "380");
    432        
    433         Element gwcgi_param_elem = doc.createElement("PARAM");
    434         gwcgi_param_elem.setAttribute("name", "gwcgi");
    435         String library_name = GlobalProperties.getGSDL3WebAddress();
    436         gwcgi_param_elem.setAttribute("value", library_name);
    437         applet_elem.appendChild(gwcgi_param_elem);
    438 
    439         Element gsdl3_param_elem = doc.createElement("PARAM");
    440         gsdl3_param_elem.setAttribute("name", "gsdl3");
    441         gsdl3_param_elem.setAttribute("value", "true");
    442         applet_elem.appendChild(gsdl3_param_elem);
     370  protected boolean sendMultipleRequests(Document doc, NodeList items, String path_prefix, String request_type, UserContext userContext)
     371  {
     372    // we will send all the requests in a single message
     373    Element message = doc.createElement(GSXML.MESSAGE_ELEM);
     374    for (int i = 0; i < items.getLength(); i++)
     375      {
     376    Element c = (Element) items.item(i);
     377    String path = c.getAttribute(GSXML.NAME_ATT);
     378    if (path_prefix != null)
     379      {
     380        path = GSPath.appendLink(path_prefix, path);
     381      }
     382    Element request = GSXML.createBasicRequest(doc, request_type, path, userContext);
     383    message.appendChild(request);
     384      }
     385
     386    Element response_message = (Element) this.mr.process(message);
     387
     388    NodeList responses = response_message.getElementsByTagName(GSXML.RESPONSE_ELEM);
     389    // check that have same number of responses as requests
     390    if (items.getLength() != responses.getLength())
     391      {
     392    logger.error("didn't get a response for each request - somethings gone wrong!");
     393    return false;
     394      }
     395
     396    for (int i = 0; i < items.getLength(); i++)
     397      {
     398    Element c1 = (Element) items.item(i);
     399    Element c2 = (Element) GSXML.getChildByTagName((Element) responses.item(i), c1.getTagName());
     400    if (c1 != null && c2 != null && c1.getAttribute(GSXML.NAME_ATT).endsWith(c2.getAttribute(GSXML.NAME_ATT)))
     401      {
     402        //add the new data into the original element
     403        GSXML.mergeElements(c1, c2);
     404      }
     405    else
     406      {
     407        logger.debug(" response does not correspond to request!");
     408      }
     409
     410      }
     411
     412    return true;
     413
     414  }
     415
     416  protected Element gli4gs3Page(Element request)
     417  {
     418    Document doc = XMLConverter.newDOM();
     419       
     420    String lang = request.getAttribute(GSXML.LANG_ATT);
     421    String uid = request.getAttribute(GSXML.USER_ID_ATT);
     422
     423    Element page_response = doc.createElement(GSXML.RESPONSE_ELEM);
     424
     425    Element applet_elem = doc.createElement("Applet");
     426    page_response.appendChild(applet_elem);
     427    applet_elem.setAttribute("ARCHIVE", "SignedGatherer.jar"); // SignedGatherer.jar should be placed in web/applet.
     428    applet_elem.setAttribute("CODE", "org.greenstone.gatherer.WebGatherer");
     429    applet_elem.setAttribute("CODEBASE", "applet"); // SignedGatherer.jar is in web/applet. But CODEBASE is the *URL* path to the (jar) file containing the main class, and is relative to documentroot "web".
     430    applet_elem.setAttribute("HEIGHT", "50");
     431    applet_elem.setAttribute("WIDTH", "380");
     432       
     433    Element gwcgi_param_elem = doc.createElement("PARAM");
     434    gwcgi_param_elem.setAttribute("name", "gwcgi");
     435    String library_name = GlobalProperties.getGSDL3WebAddress();
     436    gwcgi_param_elem.setAttribute("value", library_name);
     437    applet_elem.appendChild(gwcgi_param_elem);
     438
     439    Element gsdl3_param_elem = doc.createElement("PARAM");
     440    gsdl3_param_elem.setAttribute("name", "gsdl3");
     441    gsdl3_param_elem.setAttribute("value", "true");
     442    applet_elem.appendChild(gsdl3_param_elem);
    443443               
    444         // When an applet doesn't work in the browser, set the default display text to provide a link to the JNLP file to run with Java Web Start
    445         // The display text will be:
    446         //      Applets don't seem to work in your browser. In place of the GLI Applet, try running its alternative <a href="applet/GLIappWebStart.jnlp">Java Web Start (JNLP) version</a>
    447         Node default_text = doc.createTextNode("Applets don't seem to work in your browser. In place of the GLI Applet, try running its alternative ");
    448         Element link_to_jnlp = doc.createElement("a");
    449         link_to_jnlp.setAttribute("href", "applet/GLIappWebStart.jnlp");
    450         Node anchor_text = doc.createTextNode("Java Web Start (JNLP) version");
    451         link_to_jnlp.appendChild(anchor_text);     
    452         applet_elem.appendChild(default_text);
    453         applet_elem.appendChild(link_to_jnlp);
    454        
    455         return page_response;
    456     }
     444    // When an applet doesn't work in the browser, set the default display text to provide a link to the JNLP file to run with Java Web Start
     445    // The display text will be:
     446    //      Applets don't seem to work in your browser. In place of the GLI Applet, try running its alternative <a href="applet/GLIappWebStart.jnlp">Java Web Start (JNLP) version</a>
     447    Node default_text = doc.createTextNode("Applets don't seem to work in your browser. In place of the GLI Applet, try running its alternative ");
     448    Element link_to_jnlp = doc.createElement("a");
     449    link_to_jnlp.setAttribute("href", "applet/GLIappWebStart.jnlp");
     450    Node anchor_text = doc.createTextNode("Java Web Start (JNLP) version");
     451    link_to_jnlp.appendChild(anchor_text);     
     452    applet_elem.appendChild(default_text);
     453    applet_elem.appendChild(link_to_jnlp);
     454       
     455    return page_response;
     456  }
    457457}
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