Changeset 3568 for trunk/gsdl3/src/java/org/greenstone/gsdl3/action/BuildAction.java

Timestamp:

2002-11-26T13:55:24+13:00 (21 years ago)

Author:

kjdon

Message:

tidied up a bit, uses new page structure and new display elements

File:

• trunk/gsdl3/src/java/org/greenstone/gsdl3/action/BuildAction.java (modified) (1 diff)

trunk/gsdl3/src/java/org/greenstone/gsdl3/action/BuildAction.java

@@ -17 +17 @@
     
 
-    public String process (Element message) {
+    public Element process (Element message) {
 
-    //find the stylesheet
+    //find the stylesheet - cant go any further if not found
     String stylesheet = GSFile.stylesheetFile(config_, "build.xsl");
 
     if (stylesheet==null) {
-        return GSHTML.errorPage("build stylesheet not found!");
+        System.err.println("BuildAction Error: build stylesheet not found!");
+        return null;
     }
+
+    Element request = (Element)message.getElementsByTagName(GSXML.REQUEST_ELEM).item(0);
+    String service_name = request.getAttribute(GSXML.SUBACTION_ATT); 
+    // get the param list
+    Element cgi_param_list = (Element)GSXML.getChildByTagName(request, GSXML.PARAM_ELEM+GSXML.LIST_MODIFIER);
+    HashMap params = GSXML.extractParams(cgi_param_list);
 
     // create the return page tree
     Element page = doc_.createElement(GSXML.PAGE_ELEM);
-    page.setAttribute(GSXML.LANG_ATT, message.getAttribute(GSXML.LANG_ATT));
+    page.setAttribute(GSXML.LANG_ATT, request.getAttribute(GSXML.LANG_ATT));
     // add the lang stuff from message
-    page.appendChild(doc_.importNode(GSXML.getChildByTagName(message, GSXML.TRANSLATION_ELEM), true));
+    page.appendChild(doc_.importNode(GSXML.getChildByTagName(message, GSXML.DISPLAY_ELEM), true));
     // add the system stuff from message
     page.appendChild(doc_.importNode(GSXML.getChildByTagName(message, GSXML.CONFIGURATION_ELEM), true));
+    
 
-    Element request = (Element)message.getElementsByTagName(GSXML.REQUEST_ELEM).item(0);
-    String service_name = request.getAttribute(GSXML.SUBACTION_ATT); 
+    //  we need to do the request before getting the description- 
+    // it may have changedthe action may change the descripiton, eg 
+    // deleting a collection changes the collection list
+    String collection = (String)params.get("collection");
+    String to = "build"; // knwo this cos its build action - loaded by a cluster called build
+    to = GSPath.appendLink(to, service_name);
     
-    // get the param list
-    Element cgi_paramList = (Element)GSXML.getChildByTagName(request, GSXML.PARAM_ELEM+GSXML.LIST_MODIFIER);
-    cgi_.toLong(cgi_paramList);
-    HashMap params = GSXML.extractParams(cgi_paramList);
+    if (collection != null && !collection.equals("")) {
+        
+        // a collection has been specified - do the request
+        Element mr_query_message = doc_.createElement(GSXML.MESSAGE_ELEM);
+        Element mr_query_request = doc_.createElement(GSXML.REQUEST_ELEM);
+        mr_query_message.appendChild(mr_query_request);
+        
+        mr_query_request.setAttribute(GSXML.TYPE_ATT, GSXML.REQUEST_TYPE_BUILD);
+        mr_query_request.setAttribute(GSXML.LANG_ATT, page.getAttribute(GSXML.LANG_ATT));
+        
+        mr_query_request.setAttribute(GSXML.TO_ATT, to);
+        
+        // paramList
+        Element query_param_list = (Element) doc_.importNode(cgi_param_list, true);
+        mr_query_request.appendChild(query_param_list);
+        
+        Element mr_query_response = (Element)mr_.process(mr_query_message);
+        Element result_response = (Element)GSXML.getChildByTagName(mr_query_response, GSXML.RESPONSE_ELEM);
+        // append the response to the page
+        page.appendChild(doc_.importNode(result_response, true));
+    }
 
-    // the first part of the data for the page is the cgi-params
-    Element cgi_request = (Element)doc_.importNode(request, true);
-    page.appendChild(cgi_request);
+    // another part of the page is the service description
 
-    // the second part of the page is the param list for the service
-    // request the service info for the selected service - should be cached?
-    
+    // request the service info for the selected service - should be cached
     Element mr_info_message = doc_.createElement(GSXML.MESSAGE_ELEM);
     Element mr_info_request = doc_.createElement(GSXML.REQUEST_ELEM);
     mr_info_message.appendChild(mr_info_request);
     mr_info_request.setAttribute(GSXML.TYPE_ATT, GSXML.REQUEST_TYPE_DESCRIBE);
+    mr_info_request.setAttribute(GSXML.LANG_ATT, page.getAttribute(GSXML.LANG_ATT));
 
-    String to = "build"; // knwo this cos its build action - loaded by a cluster called build
-    to = GSPath.appendLink(to, service_name);
     mr_info_request.setAttribute(GSXML.TO_ATT, to);
-
+    
     Element mr_info_response = (Element) mr_.process(mr_info_message);
-    System.err.println("describe response for service");
-    System.err.println(converter_.getString(mr_info_response));
-    Element description = doc_.createElement(GSXML.DESCRIPTION_ELEM);
-    // just param list for now - may need content info too
 
     String path = GSXML.RESPONSE_ELEM;
     path = GSPath.appendLink(path, GSXML.SERVICE_ELEM);
-    path = GSPath.appendLink(path, GSXML.PARAM_ELEM+GSXML.LIST_MODIFIER);
+    Element description = (Element)doc_.importNode(GSXML.getNodeByPath(mr_info_response, path), true);
 
-    Node pl = GSXML.getNodeByPath(mr_info_response, path);
-    if (pl ==null) {
-        System.out.println("pl is null");
-    }
-    else {
-        System.out.println("pl name is "+pl.getNodeName());
-    }
-    Element imported_paramList = (Element)doc_.importNode(pl, true);
-    // convert the name to short
-    cgi_.addShortNames(imported_paramList);
+    Element pl = (Element)GSXML.getChildByTagName(description, GSXML.PARAM_ELEM+GSXML.LIST_MODIFIER);
+    
+    if (pl !=null) {
+        // add short names to the params in the param list
+        cgi_.addShortNames(pl);
 
-    description.appendChild(imported_paramList);
-    
-    // for each param in page_request, set the current value if present
-    //actually, prob dont need to know the default value, just which one to display - overwrite the default att?
-    
-    Element param = (Element)imported_paramList.getFirstChild();
-    while (param !=null) {
-        if (param.getNodeName().equals(GSXML.PARAM_ELEM)) { // just in case
-        String name = param.getAttribute(GSXML.NAME_ATT);
-        String current = (String)params.get(name);
-        if (current !=null && !current.equals("")) {
-            param.setAttribute(GSXML.DEFAULT_ATT, current);
+        // for each param in the description, overwrite teh default value with the currently set value if present 
+        Element param = (Element)pl.getFirstChild();
+        while (param !=null) {
+        if (param.getNodeName().equals(GSXML.PARAM_ELEM)) { // just in case
+            String name = param.getAttribute(GSXML.NAME_ATT);
+            String current = (String)params.get(name);
+            if (current !=null && !current.equals("")) {
+            param.setAttribute(GSXML.DEFAULT_ATT, current);
+            }
         }
-        }
-        param = (Element)param.getNextSibling();
-    }
-    
-    cgi_request.appendChild(description);
-    
-    // now see if we need to actually do anything - only if a colleciton has been set
-    String collection = (String)params.get("collection");
-    if (collection == null || collection.equals("")) {
-        // no coll set - just output the form
-        
-        Document style_doc = converter_.getDOM(new File(stylesheet));
-        GSXSLT.absoluteIncludePaths(style_doc, config_);
-        return transformer_.transform(style_doc, page);       
-    }
-    
-    // else do the request, output search box and results
-    Element mr_query_message = doc_.createElement(GSXML.MESSAGE_ELEM);
-    Element mr_query_request = doc_.createElement(GSXML.REQUEST_ELEM);
-    mr_query_message.appendChild(mr_query_request);
-
-    mr_query_request.setAttribute(GSXML.TYPE_ATT, GSXML.REQUEST_TYPE_BUILD);
-    mr_query_request.setAttribute(GSXML.TO_ATT, to);
-
-    // paramList
-    Element paramList = doc_.createElement(GSXML.PARAM_ELEM+GSXML.LIST_MODIFIER);
-    mr_query_request.appendChild(paramList);
-
-    Iterator i = params.entrySet().iterator();
-    while (i.hasNext()) {
-        Map.Entry e = (Map.Entry)i.next();
-        String name = cgi_.toLong((String)e.getKey());
-        if (!name.equals("")) {
-        String value = (String)e.getValue();
-        // if (!name.equals("c")) {
-        Element p = doc_.createElement(GSXML.PARAM_ELEM);
-        p.setAttribute(GSXML.NAME_ATT, name);
-        p.setAttribute(GSXML.VALUE_ATT, value);
-        paramList.appendChild(p);
-        // }
+        param = (Element)param.getNextSibling();
         }
     }
+    page.appendChild(description);
+
+    // part of the data for the page is the cgi-params
+    // if we have this here, do we need to do the previous step?
+    Element cgi_request = (Element)doc_.importNode(request, true);
+    page.appendChild(cgi_request);
     
-    Element mr_query_response = (Element)mr_.process(mr_query_message);
 
-    // this result is a message
-    Element result_response = (Element)GSXML.getChildByTagName(mr_query_response, GSXML.RESPONSE_ELEM);
-    page.appendChild(doc_.importNode(result_response, true));
-
+    // now process the page and return the result
     Document style_doc = converter_.getDOM(new File(stylesheet));
     
     GSXSLT.absoluteIncludePaths(style_doc, config_);
-    return transformer_.transform(style_doc, page);    
+    return (Element)transformer_.transform(style_doc, page);    
     }     
 }