Changeset 24989


Ignore:
Timestamp:
01/26/12 11:36:32 (9 years ago)
Author:
sjm84
Message:

Reformatting this file ahead of some changes

File:
1 edited

Legend:

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

    r24583 r24989  
    55import org.greenstone.gsdl3.util.*;
    66//XML classes
    7 import org.w3c.dom.Node; 
     7import org.w3c.dom.Node;
    88import org.w3c.dom.NodeList;
    99import org.w3c.dom.Document;
     
    1515import org.apache.log4j.*;
    1616
    17 public class PageAction extends Action {
     17public class PageAction extends Action
     18{
    1819
    1920    static Logger logger = Logger.getLogger(org.greenstone.gsdl3.action.PageAction.class.getName());
     
    2223    public static final String ABOUT_PAGE = "about";
    2324    public static final String PREFS_PAGE = "pref";
    24     public static final String GLI4GS3_PAGE="gli4gs3";
    25 
    26     public Node process (Node message_node) {
    27 
    28         Element message = this.converter.nodeToElement(message_node);
    29 
    30         Element request = (Element) GSXML.getChildByTagName(message, GSXML.REQUEST_ELEM);
    31         // the page name is the subaction
    32         String page_name = request.getAttribute(GSXML.SUBACTION_ATT);
    33         if (page_name.equals("")) { // if no page specified, assume home page
    34         page_name = HOME_PAGE;
    35         }
    36         Element result = this.doc.createElement(GSXML.MESSAGE_ELEM);
    37         Element response;
    38         if (page_name.equals(HOME_PAGE)) {
    39         response = homePage(request);
    40         //} else if (page_name.equals(ABOUT_PAGE)) {
    41         } else if (page_name.equals(ABOUT_PAGE) || page_name.equals(PREFS_PAGE)) {
    42         response = aboutPage(request);
    43         //}else if (page_name.equals(PREFS_PAGE)) {
    44         //response = prefsPage(request);
    45         } else if (page_name.equals(GLI4GS3_PAGE)){
    46         response = gli4gs3Page(request);
    47         }else { // unknown page
    48        
    49         logger.error("unknown page specified!");
    50         response =  unknownPage(request);
    51         }
    52        
    53         result.appendChild(this.doc.importNode(response, true));
    54         logger.debug("page action result: "+this.converter.getPrettyString(result));
    55         return result;
    56     }
    57    
    58 
    59     protected Element homePage(Element request) {
     25    public static final String GLI4GS3_PAGE = "gli4gs3";
     26
     27    public Node process(Node message_node)
     28    {
     29
     30        Element message = this.converter.nodeToElement(message_node);
     31
     32        Element request = (Element) GSXML.getChildByTagName(message, GSXML.REQUEST_ELEM);
     33        // the page name is the subaction
     34        String page_name = request.getAttribute(GSXML.SUBACTION_ATT);
     35        if (page_name.equals(""))
     36        { // if no page specified, assume home page
     37            page_name = HOME_PAGE;
     38        }
     39        Element result = this.doc.createElement(GSXML.MESSAGE_ELEM);
     40        Element response;
     41        if (page_name.equals(HOME_PAGE))
     42        {
     43            response = homePage(request);
     44            //} else if (page_name.equals(ABOUT_PAGE)) {
     45        }
     46        else if (page_name.equals(ABOUT_PAGE) || page_name.equals(PREFS_PAGE))
     47        {
     48            response = aboutPage(request);
     49            //}else if (page_name.equals(PREFS_PAGE)) {
     50            //response = prefsPage(request);
     51        }
     52        else if (page_name.equals(GLI4GS3_PAGE))
     53        {
     54            response = gli4gs3Page(request);
     55        }
     56        else
     57        { // unknown page
     58
     59            logger.error("unknown page specified!");
     60            response = unknownPage(request);
     61        }
     62
     63        result.appendChild(this.doc.importNode(response, true));
     64        logger.debug("page action result: " + this.converter.getPrettyString(result));
     65        return result;
     66    }
     67
     68    protected Element homePage(Element request)
     69    {
    6070
    6171        String lang = request.getAttribute(GSXML.LANG_ATT);
     
    6575        Element coll_list_request = GSXML.createBasicRequest(this.doc, GSXML.REQUEST_TYPE_DESCRIBE, "", lang, uid);
    6676        info_message.appendChild(coll_list_request);
    67         Element info_response_message = (Element)this.mr.process(info_message);
    68         if (info_response_message==null) {
     77        Element info_response_message = (Element) this.mr.process(info_message);
     78        if (info_response_message == null)
     79        {
    6980            logger.error(" couldn't query the message router!");
    7081            return null;
    7182        }
    72         Element info_response = (Element)GSXML.getChildByTagName(info_response_message, GSXML.RESPONSE_ELEM);
    73         if (info_response==null) {
     83        Element info_response = (Element) GSXML.getChildByTagName(info_response_message, GSXML.RESPONSE_ELEM);
     84        if (info_response == null)
     85        {
    7486            logger.error("couldn't query the message router!");
    7587            return null;
     
    7890        // second, get the metadata for each collection - we only want specific
    7991        // elements but for now, we'll just get it all
    80         Element collection_list = (Element)GSXML.getChildByTagName(info_response, GSXML.COLLECTION_ELEM+GSXML.LIST_MODIFIER);
     92        Element collection_list = (Element) GSXML.getChildByTagName(info_response, GSXML.COLLECTION_ELEM + GSXML.LIST_MODIFIER);
    8193        logger.debug(GSXML.xmlNodeToString(collection_list, false));
    82         if (collection_list != null) {
     94        if (collection_list != null)
     95        {
    8396            NodeList colls = GSXML.getChildrenByTagName(collection_list, GSXML.COLLECTION_ELEM);
    84             if (colls.getLength()>0) {
     97            if (colls.getLength() > 0)
     98            {
    8599                sendMultipleRequests(colls, null, GSXML.REQUEST_TYPE_DESCRIBE, lang, uid);
    86100            }
     
    88102
    89103        // get metadata for any services
    90         Element service_list = (Element)GSXML.getChildByTagName(info_response, GSXML.SERVICE_ELEM+GSXML.LIST_MODIFIER);
    91         if (service_list != null) {
     104        Element service_list = (Element) GSXML.getChildByTagName(info_response, GSXML.SERVICE_ELEM + GSXML.LIST_MODIFIER);
     105        if (service_list != null)
     106        {
    92107            NodeList services = GSXML.getChildrenByTagName(service_list, GSXML.SERVICE_ELEM);
    93             if (services.getLength() > 0) {
     108            if (services.getLength() > 0)
     109            {
    94110                sendMultipleRequests(services, null, GSXML.REQUEST_TYPE_DESCRIBE, lang, uid);
    95111            }
     
    97113
    98114        // get metadata for service clusters
    99         Element cluster_list = (Element)GSXML.getChildByTagName(info_response, GSXML.CLUSTER_ELEM+GSXML.LIST_MODIFIER);
    100         if (cluster_list != null) {
     115        Element cluster_list = (Element) GSXML.getChildByTagName(info_response, GSXML.CLUSTER_ELEM + GSXML.LIST_MODIFIER);
     116        if (cluster_list != null)
     117        {
    101118            NodeList clusters = GSXML.getChildrenByTagName(cluster_list, GSXML.CLUSTER_ELEM);
    102             if (clusters.getLength() > 0) {
     119            if (clusters.getLength() > 0)
     120            {
    103121                sendMultipleRequests(clusters, null, GSXML.REQUEST_TYPE_DESCRIBE, lang, uid);
    104122
     
    111129    } // homePage
    112130
    113     protected Element aboutPage(Element request) {
     131    protected Element aboutPage(Element request)
     132    {
    114133
    115134        String lang = request.getAttribute(GSXML.LANG_ATT);
    116135        String uid = request.getAttribute(GSXML.USER_ID_ATT);
    117136        // extract the params from the cgi-request,
    118         Element cgi_paramList = (Element)GSXML.getChildByTagName(request, GSXML.PARAM_ELEM+GSXML.LIST_MODIFIER);
     137        Element cgi_paramList = (Element) GSXML.getChildByTagName(request, GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
    119138        HashMap params = GSXML.extractParams(cgi_paramList, false);
    120        
    121         String coll_name = (String)params.get(GSParams.COLLECTION);
    122         if (coll_name == null || coll_name.equals("")) {
     139
     140        String coll_name = (String) params.get(GSParams.COLLECTION);
     141        if (coll_name == null || coll_name.equals(""))
     142        {
    123143            logger.error("about page requested with no collection or cluster specified!");
    124144            // return an empty response
     
    133153        Element coll_about_request = GSXML.createBasicRequest(this.doc, GSXML.REQUEST_TYPE_DESCRIBE, coll_name, lang, uid);
    134154        coll_about_message.appendChild(coll_about_request);
    135         Element coll_about_response = (Element)this.mr.process(coll_about_message);
     155        Element coll_about_response = (Element) this.mr.process(coll_about_message);
    136156
    137157        // add collection type attribute to paramList
    138158        String col_type = "";
    139         NodeList collect_elem = coll_about_response.getElementsByTagName(GSXML.COLLECTION_ELEM);   
    140         if(collect_elem.getLength() != 0) {
    141             for (int i=0; i < collect_elem.getLength(); i++) {
    142               Element e = (Element) collect_elem.item(i);
    143               col_type = e.getAttribute(GSXML.TYPE_ATT);
    144             }   
    145         } else {
     159        NodeList collect_elem = coll_about_response.getElementsByTagName(GSXML.COLLECTION_ELEM);
     160        if (collect_elem.getLength() != 0)
     161        {
     162            for (int i = 0; i < collect_elem.getLength(); i++)
     163            {
     164                Element e = (Element) collect_elem.item(i);
     165                col_type = e.getAttribute(GSXML.TYPE_ATT);
     166            }
     167        }
     168        else
     169        {
    146170            logger.error(GSXML.COLLECTION_ELEM + " element is null");
    147171        }
    148                
    149         NodeList paramList = request.getElementsByTagName(GSXML.PARAM_ELEM+GSXML.LIST_MODIFIER);   
    150         if(paramList.getLength() != 0) {
    151             for (int i=0; i<paramList.getLength(); i++) {
    152               Element e = (Element) paramList.item(i);                                   
    153               Element ct = GSXML.createParameter(request.getOwnerDocument(), GSParams.COLLECTION_TYPE, col_type.equalsIgnoreCase("mg") ? "0" : "1");
    154               e.appendChild(ct);
    155             }   
    156         } else {
     172
     173        NodeList paramList = request.getElementsByTagName(GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
     174        if (paramList.getLength() != 0)
     175        {
     176            for (int i = 0; i < paramList.getLength(); i++)
     177            {
     178                Element e = (Element) paramList.item(i);
     179                Element ct = GSXML.createParameter(request.getOwnerDocument(), GSParams.COLLECTION_TYPE, col_type.equalsIgnoreCase("mg") ? "0" : "1");
     180                e.appendChild(ct);
     181            }
     182        }
     183        else
     184        {
    157185            logger.info("paramList is null!!");
    158         }   
    159                
    160         if (coll_about_response == null) {
     186        }
     187
     188        if (coll_about_response == null)
     189        {
    161190            return null;
    162191        }
    163 
    164192
    165193        // second, get the info for each service - we only want display items
    166194        // but for now, we'll just get it all
    167195        NodeList services = coll_about_response.getElementsByTagName(GSXML.SERVICE_ELEM);
    168         if (services.getLength() > 0) {
     196        if (services.getLength() > 0)
     197        {
    169198            sendMultipleRequests(services, coll_name, GSXML.REQUEST_TYPE_DESCRIBE, lang, uid);
    170199        }
     
    175204        return response;
    176205    }
    177    
     206
    178207    //protected Element prefsPage(Element request) {
    179    
     208
    180209    //  return null;
    181210    //}
    182    
     211
    183212    /** if we dont know the page type, use this method */
    184     protected Element unknownPage(Element request) {
     213    protected Element unknownPage(Element request)
     214    {
    185215
    186216        String lang = request.getAttribute(GSXML.LANG_ATT);
     
    189219
    190220        // extract the params from the cgi-request,
    191         Element cgi_paramList = (Element)GSXML.getChildByTagName(request, GSXML.PARAM_ELEM+GSXML.LIST_MODIFIER);
     221        Element cgi_paramList = (Element) GSXML.getChildByTagName(request, GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
    192222        HashMap params = GSXML.extractParams(cgi_paramList, false);
    193223
    194         String coll_name = (String)params.get(GSParams.COLLECTION);
    195         if (coll_name == null || coll_name.equals("")) {
     224        String coll_name = (String) params.get(GSParams.COLLECTION);
     225        if (coll_name == null || coll_name.equals(""))
     226        {
    196227            // just return an empty response
    197228            Element response = this.doc.createElement(GSXML.RESPONSE_ELEM);
     
    206237        Element coll_about_message = this.doc.createElement(GSXML.MESSAGE_ELEM);
    207238
    208         Element coll_about_request = GSXML.createBasicRequest(this.doc, GSXML.REQUEST_TYPE_DESCRIBE,  coll_name, lang, uid);
     239        Element coll_about_request = GSXML.createBasicRequest(this.doc, GSXML.REQUEST_TYPE_DESCRIBE, coll_name, lang, uid);
    209240        coll_about_message.appendChild(coll_about_request);
    210        
    211         Element coll_about_response = (Element)this.mr.process(coll_about_message);
     241
     242        Element coll_about_response = (Element) this.mr.process(coll_about_message);
    212243
    213244        Element response = (Element) GSXML.getChildByTagName(coll_about_response, GSXML.RESPONSE_ELEM);
     
    220251    }
    221252
    222 
    223     protected boolean sendMultipleRequests(NodeList items, String path_prefix, String request_type, String lang, String uid) {
     253    protected boolean sendMultipleRequests(NodeList items, String path_prefix, String request_type, String lang, String uid)
     254    {
    224255
    225256        // we will send all the requests in a single message
    226257        Element message = this.doc.createElement(GSXML.MESSAGE_ELEM);
    227         for (int i=0; i<items.getLength(); i++) {
    228             Element c = (Element)items.item(i);
    229             String path = c.getAttribute(GSXML.NAME_ATT);       
    230             if (path_prefix != null) {
     258        for (int i = 0; i < items.getLength(); i++)
     259        {
     260            Element c = (Element) items.item(i);
     261            String path = c.getAttribute(GSXML.NAME_ATT);
     262            if (path_prefix != null)
     263            {
    231264                path = GSPath.appendLink(path_prefix, path);
    232265            }
     
    234267            message.appendChild(request);
    235268        }
    236        
    237         Element response_message = (Element)this.mr.process(message);
     269
     270        Element response_message = (Element) this.mr.process(message);
    238271
    239272        NodeList responses = response_message.getElementsByTagName(GSXML.RESPONSE_ELEM);
    240273        // check that have same number of responses as requests
    241         if (items.getLength() != responses.getLength()) {
     274        if (items.getLength() != responses.getLength())
     275        {
    242276            logger.error("didn't get a response for each request - somethings gone wrong!");
    243277            return false;
    244         }
    245 
    246         for (int i=0; i<items.getLength(); i++) {
    247             Element c1 = (Element)items.item(i);
    248             Element c2 = (Element)GSXML.getChildByTagName((Element)responses.item(i), c1.getTagName());
    249             if (c1 != null && c2 !=null && c1.getAttribute(GSXML.NAME_ATT).endsWith(c2.getAttribute(GSXML.NAME_ATT))) {
     278        }
     279
     280        for (int i = 0; i < items.getLength(); i++)
     281        {
     282            Element c1 = (Element) items.item(i);
     283            Element c2 = (Element) GSXML.getChildByTagName((Element) responses.item(i), c1.getTagName());
     284            if (c1 != null && c2 != null && c1.getAttribute(GSXML.NAME_ATT).endsWith(c2.getAttribute(GSXML.NAME_ATT)))
     285            {
    250286                //add the new data into the original element
    251287                GSXML.mergeElements(c1, c2);
    252             } else {
     288            }
     289            else
     290            {
    253291                logger.debug(" response does not correspond to request!");
    254             } 
    255            
     292            }
     293
    256294        }
    257295
     
    260298    }
    261299
    262     protected Element gli4gs3Page(Element request) {
     300    protected Element gli4gs3Page(Element request)
     301    {
    263302        String lang = request.getAttribute(GSXML.LANG_ATT);
    264303        String uid = request.getAttribute(GSXML.USER_ID_ATT);
     
    268307        Element applet_elem = this.doc.createElement("Applet");
    269308        page_response.appendChild(applet_elem);
    270         applet_elem.setAttribute("ARCHIVE","SignedGatherer.jar");
    271         applet_elem.setAttribute("CODE","org.greenstone.gatherer.GathererApplet");
    272         applet_elem.setAttribute("CODEBASE","applet");
    273         applet_elem.setAttribute("HEIGHT","50");
    274         applet_elem.setAttribute("WIDTH","380");
    275         Element gwcgi_param_elem= this.doc.createElement("PARAM");
    276         gwcgi_param_elem.setAttribute("name","gwcgi");
    277         String library_name=GlobalProperties.getGSDL3WebAddress();
    278         gwcgi_param_elem.setAttribute("value",library_name);
     309        applet_elem.setAttribute("ARCHIVE", "SignedGatherer.jar");
     310        applet_elem.setAttribute("CODE", "org.greenstone.gatherer.GathererApplet");
     311        applet_elem.setAttribute("CODEBASE", "applet");
     312        applet_elem.setAttribute("HEIGHT", "50");
     313        applet_elem.setAttribute("WIDTH", "380");
     314        Element gwcgi_param_elem = this.doc.createElement("PARAM");
     315        gwcgi_param_elem.setAttribute("name", "gwcgi");
     316        String library_name = GlobalProperties.getGSDL3WebAddress();
     317        gwcgi_param_elem.setAttribute("value", library_name);
    279318        applet_elem.appendChild(gwcgi_param_elem);
    280319
    281         Element gsdl3_param_elem= this.doc.createElement("PARAM");
    282         gsdl3_param_elem.setAttribute("name","gsdl3");
    283         gsdl3_param_elem.setAttribute("value","true");
     320        Element gsdl3_param_elem = this.doc.createElement("PARAM");
     321        gsdl3_param_elem.setAttribute("name", "gsdl3");
     322        gsdl3_param_elem.setAttribute("value", "true");
    284323        applet_elem.appendChild(gsdl3_param_elem);
    285324
     
    287326    }
    288327
    289 
    290328}
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