[Sunxacml-commit] sunxacml/com/sun/xacml/finder/impl SelectorModule.java,1.6,1.7

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Update of /cvsroot/sunxacml/sunxacml/com/sun/xacml/finder/impl
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv16761/com/sun/xacml/finder/impl

Modified Files:
	SelectorModule.java 
Log Message:
fixed namespace mapping to use policy namespace definitions


Index: SelectorModule.java
===================================================================
RCS file: /cvsroot/sunxacml/sunxacml/com/sun/xacml/finder/impl/SelectorModule.java,v
retrieving revision 1.6
retrieving revision 1.7
diff -C2 -d -r1.6 -r1.7
*** SelectorModule.java	17 Mar 2004 18:03:39 -0000	1.6
--- SelectorModule.java	12 May 2004 21:25:10 -0000	1.7
***************
*** 57,60 ****
--- 57,61 ----
  import org.apache.xpath.XPathAPI;
  
+ import org.w3c.dom.NamedNodeMap;
  import org.w3c.dom.Node;
  import org.w3c.dom.NodeList;
***************
*** 64,72 ****
   * This module implements the basic behavior of the AttributeSelectorType,
   * looking for attribute values in the physical request document using the
!  * given XPath expression. This is implemented as a separate module instead
!  * of in the core code (like the designator code) so that programmers can
!  * remove this functionality if they want (it's optional in the spec), so
!  * they can replace this code with more efficient, specific code as needed,
!  * and so they can easily swap in different XPath libraries.
   * <p>
   * Note that if no matches are found, this module will return an empty bag
--- 65,73 ----
   * This module implements the basic behavior of the AttributeSelectorType,
   * looking for attribute values in the physical request document using the
!  * given XPath expression. This is implemented as a separate module (instead
!  * of being implemented directly in <code>AttributeSelector</code> so that
!  * programmers can remove this functionality if they want (it's optional in
!  * the spec), so they can replace this code with more efficient, specific
!  * code as needed, and so they can easily swap in different XPath libraries.
   * <p>
   * Note that if no matches are found, this module will return an empty bag
***************
*** 76,80 ****
   * <p>
   * This module uses the Xalan XPath implementation, and supports only version
!  * 1.0 of XPath.
   *
   * @since 1.0
--- 77,84 ----
   * <p>
   * This module uses the Xalan XPath implementation, and supports only version
!  * 1.0 of XPath. It is a fully functional, correct implementation of XACML's
!  * AttributeSelector functionality, but is not designed for environments
!  * that make significant use of XPath queries. Developers for any such
!  * environment should consider implementing their own module.
   *
   * @since 1.0
***************
*** 110,113 ****
--- 114,119 ----
       *
       * @param path the XPath expression to search against
+      * @param namespaceNode the DOM node defining namespace mappings to use,
+      *                      or null if mappings come from the context root
       * @param type the datatype of the attributes to find
       * @param context the representation of the request data
***************
*** 117,122 ****
       *         attributes or an error
       */
!     public EvaluationResult findAttribute(String path, URI type,
!                                           EvaluationCtx context,
                                            String xpathVersion) {
          // we only support 1.0
--- 123,128 ----
       *         attributes or an error
       */
!     public EvaluationResult findAttribute(String path, Node namespaceNode,
!                                           URI type, EvaluationCtx context,
                                            String xpathVersion) {
          // we only support 1.0
***************
*** 126,134 ****
          // get the DOM root of the request document
          Node root = context.getRequestRoot();
!         
          NodeList matches = null;
          try {
              // NOTE: see comments in XALAN docs about why this is slow
!             matches = XPathAPI.selectNodeList(root, path);
          } catch (Exception e) {
              // in the case of any exception, we need to return an error
--- 132,197 ----
          // get the DOM root of the request document
          Node root = context.getRequestRoot();
! 
!         // if we were provided with a non-null namespace node, then use it
!         // to resolve namespaces, otherwise use the context root node
!         Node nsNode = (namespaceNode != null) ? namespaceNode : root;
! 
!         // setup the root path (pre-pended to the context path), which...
!         String rootPath = "";
! 
!         // ...only has content if the context path is relative
!         if (path.charAt(0) != '/') {
!             String rootName = root.getLocalName();
! 
!             // see if the request root is in a namespace
!             String namespace = root.getNamespaceURI();
!             
!             if (namespace == null) {
!                 // no namespacing, so we're done
!                 rootPath = "/" + rootName + "/";
!             } else {
!                 // namespaces are used, so we need to lookup the correct
!                 // prefix to use in the search string
!                 NamedNodeMap nmap = namespaceNode.getAttributes();
!                 rootPath = null;
! 
!                 for (int i = 0; i < nmap.getLength(); i++) {
!                     Node n = nmap.item(i);
!                     if (n.getNodeValue().equals(namespace)) {
!                         // we found the matching namespace, so get the prefix
!                         // and then break out
!                         String name = n.getNodeName();
!                         int pos = name.indexOf(':');
! 
!                         if (pos == -1) {
!                             // the namespace was the default namespace
!                             rootPath = "/";
!                         } else {
!                             // we found a prefixed namespace
!                             rootPath = "/" + name.substring(pos + 1);
!                         }
! 
!                         // finish off the string
!                         rootPath += ":" + rootName + "/";
! 
!                         break;
!                     }
!                 }
! 
!                 // if the rootPath is still null, then we don't have any
!                 // definitions for the namespace
!                 if (rootPath == null) {
!                     // FIXME: should this be an error, or should we add
!                     // the namespace somehow?
!                 }
!             }
!         }
! 
!         // now do the query, pre-pending the root path to the context path
          NodeList matches = null;
          try {
              // NOTE: see comments in XALAN docs about why this is slow
!             System.out.println("asking for: " + rootPath + path);
!             matches = XPathAPI.selectNodeList(root, rootPath + path, nsNode);
          } catch (Exception e) {
              // in the case of any exception, we need to return an error