Changeset 25819

Timestamp:

2012-06-26T15:32:17+12:00 (11 years ago)

Author:

kjdon

Message:

added a few new methods that are used by GSXSLT

File:

• main/trunk/greenstone3/src/java/org/greenstone/gsdl3/util/GSXML.java (modified) (3 diffs)

main/trunk/greenstone3/src/java/org/greenstone/gsdl3/util/GSXML.java

@@ -704 +704 @@
         return node_list;
     }
+  public static NodeList getChildrenByTagNameNS(Node n, String namespace, String local_name)
+    {
+        MyNodeList node_list = new MyNodeList();
+        Node child = n.getFirstChild();
+        while (child != null)
+        {
+          System.err.println("node name="+child.getNodeName()+", ns="+child.getNamespaceURI());
+          if (child.getNodeType() == Node.ELEMENT_NODE && child.getNamespaceURI().equals(namespace) && child.getLocalName() != null && child.getLocalName().equals(local_name))
+            {
+                node_list.addNode(child);
+            }
+            child = child.getNextSibling();
+        }
+        return node_list;
+    }
 
     /** Duplicates an element, but gives it a new name */
@@ -905 +920 @@
     }
 
+  public static Element getNamedElementNS(Element parent, String namespace_uri, String node_local_name, String attribute_name, String attribute_value)
+  {
+        NodeList children = parent.getChildNodes();
+        for (int i = 0; i < children.getLength(); i++)
+        {
+            Node child = children.item(i);
+            if (child.getNodeType() == Node.ELEMENT_NODE &&child.getNamespaceURI().equals(namespace_uri) && child.getLocalName().equals(node_local_name))
+            {
+                if (((Element) child).getAttribute(attribute_name).equals(attribute_value))
+                    return (Element) child;
+            }
+        }
+        // not found
+        return null;
+
+
+  }
+
+    // In element main, tries to find any previous occurrence of elements with xsl-template-name=templateName, 
+    // and whose named attribute (attributeName) has the same value as the same attribute in node.
+    // If this is the case, such a previous occurrence is removed from element main, since
+    // the new node will contain a more specific redefinition of this element.
+  public static void removeNamedElementNS(Element parent, String namespace_uri, String node_local_name, String attribute_name, String attribute_value)
+  {
+    System.err.println("removeNmaedElement "+namespace_uri+node_local_name +attribute_name+attribute_value);
+    if (attribute_value.equals("")) {
+          // it has no identifying attribute, so we can't find any matches
+          return;
+        }
+        
+        Element old_elem = GSXML.getNamedElementNS(parent, namespace_uri, node_local_name, attribute_name, attribute_value);
+        if (old_elem != null)
+          {
+            System.err.println("removing "+old_elem.getNodeName());
+            parent.removeChild(old_elem);
+          }
+        
+  }
+  
+  public static void removeNamedElementsNS(Element parent, String namespace, String node_local_name, String attribute_name, String attribute_value)
+  {
+        if (attribute_value.equals("")) {
+          // it has no identifying attribute, so we can't find any matches
+          return;
+        }
+
+        NodeList children = parent.getChildNodes();
+  for (int i = children.getLength()-1; i >= 0; i--)
+        {
+            Node child = children.item(i);
+            if (child.getNodeType() == Node.ELEMENT_NODE && child.getNamespaceURI().equals(namespace) && child.getLocalName() != null && child.getLocalName().equals(node_local_name))
+            {
+                if (((Element) child).getAttribute(attribute_name).equals(attribute_value))
+                  parent.removeChild(child);
+            }
+        }
+  }
+
+
+
     /**
      * returns a NodeList of elements:
@@ -929 +1004 @@
         return node_list;
     }
+
+  public static Element getLastElementByTagNameNS(Element main, String namespace, String node_name) {
+
+    NodeList nodes = main.getElementsByTagNameNS(namespace, node_name);
+    int len = nodes.getLength();
+    if (len==0) {
+      return null;
+    }
+    return (Element)nodes.item(len-1);
+  }
+
 
     public static int SORT_TYPE_STRING = 0;