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  1. Axis
  2. AXIS-2578

Incorrect namespace for xsi:type value causes problems with non-Axis clients


    • Type: Bug
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 1.4
    • Fix Version/s: None
    • Labels:
    • Environment:
      Java 1.5.0_07-b03
      Axis 1.4
      Castor or Castor 1.0.3


      I have a Document/Literal web service implemented with Axis 1.4 using Castor - also tried Castor 1.0.3 - for serialization of XML. The WSDL includes XML schema objects from several namespaces, and uses XML inheritance which causes xsi:type attributes to be used. When a non-Axis client - I have tried .NET and Python - try to use my web service they cannot resolve the correct type for an element that has an xsi:type that defines its actual type. I believe the XML returned by Axis is incorrect, the xsi:type value does not have a namespace prefix, but the default namespace has a different URI than what the value of the xsi:type should use.

      In this example, Bug, BugSpecifier, and EnhancementRequest are defined in the http://example.com/bug namespace, however the XML returned by Axis does not use the ns1 prefix in the value of the xsi:type attribute that defines the Bug as an EnhancementRequest. Axis clients appear to ignore this issue, however .NET and Python cannot resovle EnhancementRequest in the http://example.org/bug/remote namespace.

      <getBugResponse xmlns="http://example.org/bug/remote">
      <ns1:BugSpecifier xmlns:ns1="http://example.org/bug">
      <ns1:Bug xsi:type="EnhancementRequest">

      The attachment bug.zip contains an example project that reproduces this problem. The org.example.bug.client.BugClient class calls this web service, however since it is an Axis client it does not have a problem with the incorrect namespace; a .NET, Python, or other web service client that respects the namespace in the xsi:type will have a problem with this web service.

      I believe this issue can be solved by adding the method startPrefixMapping to org.apache.axis.encoding.ser.castor.AxisContentHandler, and route the call to context.registerPrefixForURI(prefix, uri), i.e.

      public class AxisContentHandler extends DefaultHandler {

      • notifies the serialization context of the new namespace mapping
        public void startPrefixMapping(String prefix, String uri)
        throws SAXException { context.registerPrefixForURI(prefix, uri); }

      This makes the Axis SerializationContext aware of the namespaces that Castor is using. I have tried this fix with Castor and 1.0.3 and it generates the correct namespaces.


        1. fix.zip
          0.4 kB
          Michael McRoberts
        2. bug.zip
          3.86 MB
          Michael McRoberts



            • Assignee:
              michaelmcroberts Michael McRoberts
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