Hi, We are having some issues with classloaders and custom field serializers in GWT 2.0 in combination with oc4j 10.1.3.5. I was assuming that the issue was purely an Oracle thing, but I looked through the RPC code and found some differences in the way classloaders are used in the RPC package.
The javadocs of RPC.decodeRequest state that the Thread.currentThread ().getContextClassLoader() is used to load the service interfaces. Unfortunately this approach is not used when searching for the custom field serializers. Custom field serializers are looked up using: com.google.gwt.user.server.rpc.impl.SerializabilityUtil.computeHasCustomFieldSerializer This method uses the SerializabilityUtil.class.getClassLoader() and in our specific case this fails to locate our custom field serializer. Is there a reason why this is different ? What is special in our EAR/WAR deployment ? All libs (including gwt- servlet.jar and ourgwt.jar, which contains the custom field serializer) are available in the EAR and are available in the WAR classloader through the manifest of the WAR. David -- http://groups.google.com/group/Google-Web-Toolkit-Contributors