Changeset 4267

Timestamp:

2003-05-12T15:53:26+12:00 (21 years ago)

Author:

kjdon

Message:

coll description now returns lang specific metadata

File:

• trunk/gsdl3/src/java/org/greenstone/gsdl3/collection/ServiceCluster.java (modified) (7 diffs)

trunk/gsdl3/src/java/org/greenstone/gsdl3/collection/ServiceCluster.java

@@ -47 +47 @@
     protected static final String CONFIG_ENCODING = "utf-8";
 
+    protected static final String DEFAULT_LANG = "en"; // hack for now, should be read from the coll cfg file? or site cfg file for cluster
+    
     /** base directory for the site that this cluster belongs to*/
     protected String site_home = null;
@@ -71 +73 @@
     /** list of services */
     protected Element service_list = null;
-    /** list of Metadata */
+    /** list of Metadata - lang independent */
     protected Element metadata_list = null;
+    /** language specific stuff */
+    protected Element lang_specific_metadata_list = null;
     /** the element that will have any descriptions passed back in */
     protected Element description = null;
@@ -172 +176 @@
     }
     
-    /** adds metadata from a metadataList into the metadata_list xml */ 
+    /** adds metadata from a metadataList into the metadata_list xml 
+     * language independent stuff goes inot the main list, lang dependent stuff
+     * goes into a separate element, like:
+     * <metadataList><metadata name="Title"><metadata name="Title" lang="en">xxx</metadata><metadata name="Title" lang="fr">yyy</metadata></metadata></metadataList>
+     * this is a bit wasteful on space but is the easiest to process (that I've thought of so far) 
+     */
     protected boolean addMetadata(Element metadata_list) {
+    
     NodeList metanodes = metadata_list.getElementsByTagName(GSXML.METADATA_ELEM);
     if (metanodes.getLength()>0) {  
         for(int k=0; k<metanodes.getLength(); k++) {
-        this.metadata_list.appendChild(this.doc.importNode(metanodes.item(k),true));
+        Element m = (Element) metanodes.item(k);
+        String lang = m.getAttribute(GSXML.LANG_ATT);
+        if (lang==null||lang.equals("")) {
+            // just add it to the normal list
+            this.metadata_list.appendChild(this.doc.importNode(m,true));
+        } else {
+            String name = m.getAttribute(GSXML.NAME_ATT);
+            // add it to the lang-dependent list
+            if (this.lang_specific_metadata_list == null) {
+            this.lang_specific_metadata_list = this.doc.createElement(GSXML.METADATA_ELEM+GSXML.LIST_MODIFIER);
+            }
+            Element this_meta = GSXML.getNamedElement(this.lang_specific_metadata_list, GSXML.METADATA_ELEM, GSXML.NAME_ATT, name);
+            if (this_meta==null) {
+            this_meta = this.doc.createElement(GSXML.METADATA_ELEM);
+            this_meta.setAttribute(GSXML.NAME_ATT, name);
+            this.lang_specific_metadata_list.appendChild(this_meta);
+            }
+            
+            this_meta.appendChild(this.doc.importNode(m, true));
+            
+        }
         }
     }        
@@ -329 +359 @@
     response.setAttribute(GSXML.FROM_ATT, this.cluster_name);
     String type = request.getAttribute(GSXML.TYPE_ATT);
+    String lang = request.getAttribute(GSXML.LANG_ATT);
     response.setAttribute(GSXML.TYPE_ATT, type);
     
@@ -339 +370 @@
         if (param_list == null) {
         description.appendChild(this.service_list);
-        description.appendChild(this.metadata_list);
+        description.appendChild(oneLanguageMetadata( lang));
         return response;
         }
@@ -354 +385 @@
             description.appendChild(this.service_list);
             } else if (info.equals(GSXML.METADATA_ELEM+GSXML.LIST_MODIFIER)) {
-            description.appendChild(this.metadata_list);
+            description.appendChild(oneLanguageMetadata(lang));
             } 
         }
@@ -470 +501 @@
 
     } 
+
+    /** takes a metadata list and deletes any items that are not in the right lang, if there is a correct one present. 
+     * its a bit of a hack */
+    protected Element oneLanguageMetadata(String lang) {
+    
+    Element meta_list = (Element)this.metadata_list.cloneNode(true);
+    // go through and add lang dependent ones unwanted elements
+    NodeList metas = this.lang_specific_metadata_list.getChildNodes();
+    for (int i=0; i<metas.getLength(); i++) {
+        Element m = (Element) metas.item(i);
+        // find the child with the correct language
+        Element new_m = GSXML.getNamedElement(m, GSXML.METADATA_ELEM, GSXML.LANG_ATT, lang);
+        if (new_m==null) {
+        // use the default lang
+        new_m = GSXML.getNamedElement(m, GSXML.METADATA_ELEM, GSXML.LANG_ATT, DEFAULT_LANG);
+        }
+        if (new_m==null) {
+        // just get the first one
+        new_m = (Element)GSXML.getChildByTagName(m, GSXML.METADATA_ELEM);
+        }
+        meta_list.appendChild(this.doc.importNode(new_m, true));
+    }
+    return meta_list;
+    
+    }
 }