Changeset 4079

Timestamp:

2003-04-02T15:58:48+12:00 (21 years ago)

Author:

kjdon

Message:

added a method for working out what metadata is needed for a particular node type from an xslt

File:

• trunk/gsdl3/src/java/org/greenstone/gsdl3/util/GSXSLT.java (modified) (2 diffs)

trunk/gsdl3/src/java/org/greenstone/gsdl3/util/GSXSLT.java

@@ -8 +8 @@
 
 import java.util.HashMap;
+import java.util.Vector;
 
 /** various functions for manipulating Greenstone xslt  */
@@ -43 +44 @@
     
     }
+
+    /** 
+     * looks through a stylesheet for <xxx:template match='template_name'>
+     * inside this template it looks for any <xxx:value-of select='metadataList/metadata[@name=yyy]> elements, and extracts the metadata names into a Vector
+     */
+    public static Vector extractWantedMetadata(Document stylesheet, String template_name) {
+    
+    Vector metadata = new Vector();
+    Element base_node = stylesheet.getDocumentElement();
+    NodeList templates = base_node.getElementsByTagNameNS("*","template");
+    for (int i=0; i<templates.getLength(); i++) {
+        Element template = (Element)templates.item(i);
+        String match_name = template.getAttribute("match");
+        if (!match_name.equals(template_name)) {
+        continue; // we're only looking for specific templates
+        }
+        String mode = template.getAttribute("mode");
+        if (!mode.equals("")) {   
+        continue; // we only want ones without modes - these are processing ones, not display ones
+        }
+        // we have one that we want to look through
+        NodeList values = template.getElementsByTagNameNS("*", "value-of");
+        for (int v=0; v<values.getLength(); v++) {
+        String select = ((Element)values.item(v)).getAttribute("select");
+        if (select.startsWith("metadataList/metadata[@name=")) {
+            String []bits = select.split("'|\"");
+            // there should be two quotes in teh string, therefore 3 items, and the second one is teh one we want
+            String name = bits[1];
+            metadata.add(name);
+        }
+        }
+    }
+    return metadata;    
+    }
+
+    
+
 }
+