Changeset 5113

Timestamp:

2003-08-07T16:56:42+12:00 (21 years ago)

Author:

kjdon

Message:

now the recept adds in a collection description for each page, which includes descriptions for each service. the services can now be listed on each page in a nav bar or the like.

File:

• trunk/gsdl3/src/java/org/greenstone/gsdl3/core/DefaultReceptionist.java (modified) (2 diffs)

trunk/gsdl3/src/java/org/greenstone/gsdl3/core/DefaultReceptionist.java

@@ -29 +29 @@
     Element param_list = (Element)GSXML.getChildByTagName(page_request, GSXML.PARAM_ELEM+GSXML.LIST_MODIFIER);
     if (param_list==null) { // must be the original home page
+        System.out.println("DefaultReceptionist: no param list, assuming home page");
         return;
     }
     Element coll_param = GSXML.getNamedElement(param_list, GSXML.PARAM_ELEM, GSXML.NAME_ATT, GSParams.COLLECTION);
     if (coll_param == null) {
+        System.out.println("DefaultReceptionist: coll param is null, returning");
         return;
     }
     String action = page_request.getAttribute(GSXML.ACTION_ATT);
     if (action.equals("p")) {
+        System.out.println("DefaultReceptionist: page action, so returning");
         return;
     }
@@ -53 +56 @@
         coll_description = (Element)GSXML.getChildByTagName(coll_about_response, GSXML.CLUSTER_ELEM);
     }
-    if (coll_description != null) {
-        Element page_response = (Element)GSXML.getChildByTagName(page, GSXML.PAGE_RESPONSE_ELEM);
-        page_response.appendChild(this.doc.importNode(coll_description, true));
+    if (coll_description == null) {
+        System.out.println("DefaultReceptionist: no collection description, returning");
+        return;
     }
+    
+    Element page_response = (Element)GSXML.getChildByTagName(page, GSXML.PAGE_RESPONSE_ELEM);
+    Element new_coll_description = (Element)this.doc.importNode(coll_description, true);
+    page_response.appendChild(new_coll_description);
+    
+    // now get the dispay info for the services
+    Element service_list = (Element)GSXML.getChildByTagName(new_coll_description, GSXML.SERVICE_ELEM+GSXML.LIST_MODIFIER);
+    if (service_list == null) {
+        System.out.println("DefaultReceptionist: no service list, returning");
+        // something weird has gone wrong
+        return;
+    }
+
+    NodeList services = service_list.getElementsByTagName(GSXML.SERVICE_ELEM);
+    // we will send all the requests in a single message
+    Element info_message = this.doc.createElement(GSXML.MESSAGE_ELEM);
+    for (int i=0; i<services.getLength(); i++) {
+        Element c = (Element)services.item(i);
+        String name = c.getAttribute(GSXML.NAME_ATT);
+        String address = GSPath.appendLink(collection, name);
+        Element info_request = GSXML.createBasicRequest(this.doc,  GSXML.REQUEST_TYPE_DESCRIBE, address, lang);
+        info_message.appendChild(info_request);
+    }
+
+    Element info_response = (Element)this.mr.process(info_message);
+
+    NodeList service_responses = info_response.getElementsByTagName(GSXML.RESPONSE_ELEM);
+    // check that have same number of responses as collections
+    if (services.getLength() != service_responses.getLength()) {
+        System.err.println("DefaultReceptionist Error: didn't get a response for each service - somethings gone wrong!");
+        // for now, dont use the metadata
+    } else {
+        for (int i=0; i<services.getLength(); i++) {
+        Element c1 = (Element)services.item(i);
+        Element c2 = (Element)GSXML.getChildByTagName((Element)service_responses.item(i), GSXML.SERVICE_ELEM);
+        if (c1.getAttribute(GSXML.NAME_ATT).equals(c2.getAttribute(GSXML.NAME_ATT))) {
+            //add the service data into the original response
+            GSXML.mergeElements(c1, c2);
+        } else {
+            System.err.println("DefaultReceptionist Error: response does not correspond to request!");
+        } 
+        
+        }
+    }
+    
     }
 }