Changeset 4861

Timestamp:

2003-07-02T16:42:36+12:00 (21 years ago)

Author:

kjdon

Message:

not using orientation and documentInterleave for classifiers any more. also added in support for parent and ancestor metadata

File:

• trunk/gsdl3/src/java/org/greenstone/gsdl3/service/GS2Retrieve.java (modified) (3 diffs)

trunk/gsdl3/src/java/org/greenstone/gsdl3/service/GS2Retrieve.java

@@ -310 +310 @@
     if (isClassifier(node_id)) {
         node = doc_.createElement(GSXML.CLASS_NODE_ELEM);
-        String childtype = info.getInfo("childtype");
-        String orientation="";
-        if (childtype.equals("HList")) {
-        orientation = "horizontal";
-        } else { // assume vertical
-        orientation = "vertical";
-        }
-        node.setAttribute(GSXML.CLASS_NODE_ORIENTATION_ATT, orientation);
+        //String childtype = info.getInfo("childtype");
+        //String orientation="";
+        //if (childtype.equals("HList")) {
+        //  orientation = "horizontal";
+        //} else { // assume vertical
+        //  orientation = "vertical";
+        //}
+        //node.setAttribute(GSXML.CLASS_NODE_ORIENTATION_ATT, orientation);
     } else {
         
@@ -712 +712 @@
         for (int m = 0; m < metadata_list.size(); m++) {
             String metadata = (String) metadata_list.get(m);
-            String value = info.getInfo(metadata);
+            String value = getMetadata(node_id, info, metadata);
             GSXML.addMetadata(doc_, node_meta_list, metadata, value);
         }
         }
+        //String v = getMetadata (node_id, info, "parent_Title");
+        //System.out.println("parent title = "+v);
+        //v = getMetadata (node_id, info, "ancestors': '_Title");
+        //System.out.println("ancestortitle = "+v);
     }
     
@@ -721 +725 @@
     }
 
-
+    protected final char RELATION_SEP_CHAR = '_';
+    protected final String  SEPARATOR_SEP_STRING = "'";
+    
+    protected String getMetadata(String node_id, DBInfo info, 
+                 String metadata) {
+    int pos = metadata.indexOf(RELATION_SEP_CHAR);
+    if (pos ==-1) {
+        return info.getInfo(metadata);
+    }
+    
+    String relation = metadata.substring(0, pos);
+    if (relation.equals("parent") || relation.startsWith("ancestors")) {
+        String parent_id = OID.getParent(node_id);
+        if (parent_id.equals(node_id)){
+        // no parents or ancestors
+        return "";
+        }
+        DBInfo parent_info = gdbm_src_.getInfo(parent_id);
+        if (parent_info == null) return "";
+        String new_meta = metadata.substring(pos+1);
+        if (relation.equals("parent")) {
+        return parent_info.getInfo(new_meta);
+        }
+        // do ancestor stuff
+        // get teh separating string
+        String items [] = relation.split(SEPARATOR_SEP_STRING);
+        String separator = "";
+        if (items.length > 1) {
+        separator = items[1];
+        relation = items[0];
+        }
+        
+        StringBuffer value = new StringBuffer();
+        value.append(parent_info.getInfo(new_meta));
+        String current_id = parent_id;
+        parent_id = OID.getParent(current_id);
+        while (!parent_id.equals(current_id)) {
+        parent_info = gdbm_src_.getInfo(parent_id);
+        if (parent_info == null) return value.toString();
+        value.insert(0, separator);
+        value.insert(0, parent_info.getInfo(new_meta));
+        
+        current_id = parent_id;
+        parent_id = OID.getParent(current_id);
+        } 
+
+        return value.toString();
+    }
+    
+    
+    // its not a relation after all
+    return info.getInfo(metadata);
+        
+    }
+    
     /** Retrieve the content of a document - implemented by concrete subclasses */
     protected abstract Element processDocumentContentRetrieve(Element request);