context-priority-classloader

[Kevan Miller]

I just had a look at a problem regarding context-priority-classloader reported on the user mailing list (original post is copied below). Hossam is attempting to override the SAAJ 1.2 implementation with a SAAJ 1.3 implementation (claims that this works under JBoss). Is this something which should be supported? Geronimo has explicit checks which will prevent this. It's possible that a one line change could fix, but I'm not sure of all of the implications.

Both the JettyClassLoader and the TomcatClassLoader prevent javax classes/interfaces from being overridden by the context. Should the class loaders allow "javax" packages/subpackages to be overridden?

Here's the current list of restrictions for each ClassLoader:

TomcatClassLoader:
     java, javax, org/apache/geronimo, org/apache/jasper, org/apache/tomcat,  org/apache/naming,  org/apache/catalina, org/xml, org/w3c

JettyClassLoader:
     java, javax, org/apache/geronimo, org/mortbay, org/xml, org/w3c

Are these lists correct? Anything missing? Anything which should be removed?

--kevan

On 9/19/05, Hossam Karim <[EMAIL PROTECTED]> wrote to user@geronimo.apache.org :

Hello,
  I am using the following configuration:
  geronimo-1.0-M4, Java 1.5.0_04, Windows 2003 Server Enterprise
  My problem:
    I am trying to deploy a WAR with the following deployment plan
(geronimo-web.xml):
    =======================================
    <?xml version=" 1.0" encoding="UTF-8"?>
    <web-app xmlns="http://geronimo.apache.org/xml/ns/web"
configId="emee/emee-message">
      <context-root>/emee-message</context-root>
      <context-priority-classloader>true</context-priority-classloader>
    </web-app>
    =======================================
    WEB-INF/lib contains saaj-api.jar and saaj-impl.jar, these are version
1.3 NOT 1.2 of SAAJ API,
    and I need to load these implementation not the one that comes with
Geronimo, beacuse I need to call
    public static javax.xml.soap.MessageFactory
newInstance(java.lang.String string) method.
    NoSuchMethodException is thrown when it is called, which means Geronimo
is using SAAJ not the one I
    provided.

    Is there a way I can instruct Geronimo to load the my library? it works
with JBOSS!!