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Date: 21 Aug 2002 06:43:58 -0000
Message-ID: <20020821064358.18040.qmail@icarus.apache.org>
From: cziegeler@apache.org
To: xml-cocoon2-cvs@apache.org
Subject: cvs commit:
 xml-cocoon2/src/java/org/apache/cocoon/webapps/session/xml XMLUtil.java

cziegeler    2002/08/20 23:43:58

  Modified:    src/java/org/apache/cocoon/webapps/session/xml XMLUtil.java
  Log:
  Adding more meaning to NPE.
  
  Revision  Changes    Path
  1.5       +11 -3     xml-cocoon2/src/java/org/apache/cocoon/webapps/session/xml/XMLUtil.java
  
  Index: XMLUtil.java
  ===================================================================
  RCS file: /home/cvs/xml-cocoon2/src/java/org/apache/cocoon/webapps/session/xml/XMLUtil.java,v
  retrieving revision 1.4
  retrieving revision 1.5
  diff -u -r1.4 -r1.5
  --- XMLUtil.java	24 Jun 2002 12:42:50 -0000	1.4
  +++ XMLUtil.java	21 Aug 2002 06:43:58 -0000	1.5
  @@ -827,13 +827,21 @@
        *                    this node is searched for a child named path[1]...
        */
       public static NodeList getNodeListFromPath(Node contextNode,
  -                                               String[] path) {
  +                                                 String[] path) {
           if (contextNode == null) return new NodeListImpl();
           if (path == null || path.length == 0) {
               return new NodeListImpl(new Node[] {contextNode});
           }
           NodeListImpl result = new NodeListImpl();
  -        getNodesFromPath(result, contextNode, path, 0);
  +        try {
  +            getNodesFromPath(result, contextNode, path, 0);
  +        } catch (NullPointerException npe) {
  +            // this NPE is thrown because the parser iss not configured
  +            // to use DOM Level 2
  +            throw new NullPointerException("XMLUtil.getNodeListFromPath() did catch a NullPointerException."+
  +                          "This might be due to a missconfigured XML parser which does not use DOM Level 2."+
  +                          "Make sure that you use the XML parser shipped with Cocoon.");
  +        }
           return result;
       }
   
  
  
  

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