I am guessing that you have some other version of one or more of those jars in 
your classpath somewhere. In 1.2.10, OMLinkedListMetaFactory (in axiom-api) 
directly implements OMMetaFactory (from axiom-api):
        public class OMLinkedListMetaFactory implements OMMetaFactory
This changes in 1.2.11, where OMLinkedListMetaFactory extends 
AbstractOMMetaFactory (from axiom-api):
        public class OMLinkedListMetaFactory extends AbstractOMMetaFactory


Brett 

-----Original Message-----
From: John Watt [mailto:john.w...@glasgow.ac.uk] 
Sent: Thursday, January 12, 2012 9:02 AM
To: java-user@axis.apache.org
Subject: RE: org.apache.axiom.om.impl.llom.factory.OMLinkedListMetaFactory 
cannot be cast to org.apache.axiom.om.OMMetaFactory

Hi Brett,

Its using 

axiom-api-1.2.10.jar
axiom-dom-1.2.10.jar
axiom-impl-1.2.10.jar

Thanks,
John

-----Original Message-----
From: Okken,Brett [mailto:bok...@cerner.com]
Sent: 12 January 2012 15:00
To: java-user@axis.apache.org
Subject: RE:
org.apache.axiom.om.impl.llom.factory.OMLinkedListMetaFactory cannot be cast to 
org.apache.axiom.om.OMMetaFactory

What versions of the following projects are in your assembly:
axiom-api
axiom-dom
axiom-impl

Brett Okken

-----Original Message-----
From: John Watt [mailto:john.w...@glasgow.ac.uk]
Sent: Thursday, January 12, 2012 8:51 AM
To: java-user@axis.apache.org
Subject: FW:
org.apache.axiom.om.impl.llom.factory.OMLinkedListMetaFactory cannot be cast to 
org.apache.axiom.om.OMMetaFactory

Hi,

I have an Axis2 web service which allows values to be set then retrieved using 
separate methods. This service works fine in the browser. This service is using 
axis2 1.5.3 and axiom 1.2.10.

I then tried to run up a Java client (webClientBean, which is called from a JSP 
page) using the same Axis2 library versions which programmatically calls the 
service. Using the ServiceClient example at the following page:

http://today.java.net/pub/a/today/2006/12/13/invoking-web-services-using
-apache-axis2.html 

I've created a client which is attached (webClientBean).

I get the following error in Tomcat when it is invoked:

org.apache.jasper.JasperException: java.lang.ClassCastException:
org.apache.axiom.om.impl.llom.factory.OMLinkedListMetaFactory cannot be cast to 
org.apache.axiom.om.OMMetaFactory
        
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServle
tWrapper.java:491)
        
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.ja
va:419)
        
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
        
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

root cause

java.lang.ClassCastException:
org.apache.axiom.om.impl.llom.factory.OMLinkedListMetaFactory cannot be cast to 
org.apache.axiom.om.OMMetaFactory
        
org.apache.axiom.om.OMAbstractFactory.getMetaFactory(OMAbstractFactory.j
ava:133)
        
org.apache.axiom.om.OMAbstractFactory.getOMFactory(OMAbstractFactory.jav
a:152)
        
org.apache.axis2.description.AxisDescription.<init>(AxisDescription.java
:70)
        
org.apache.axis2.engine.AxisConfiguration.<init>(AxisConfiguration.java:
160)
        
org.apache.axis2.deployment.DeploymentEngine.populateAxisConfiguration(D
eploymentEngine.java:701)
        
org.apache.axis2.deployment.FileSystemConfigurator.getAxisConfiguration(
FileSystemConfigurator.java:116)
        
org.apache.axis2.context.ConfigurationContextFactory.createConfiguration
Context(ConfigurationContextFactory.java:64)
        
org.apache.axis2.context.ConfigurationContextFactory.createConfiguration
ContextFromFileSystem(ConfigurationContextFactory.java:206)
        
org.apache.axis2.client.ServiceClient.configureServiceClient(ServiceClie
nt.java:150)
        
org.apache.axis2.client.ServiceClient.<init>(ServiceClient.java:143)
        
org.apache.axis2.client.ServiceClient.<init>(ServiceClient.java:246)
        vanguard2.webClientBean.callWebServiceSet(webClientBean.java:60)
        org.apache.jsp.index_jsp._jspService(index_jsp.java:93)
        
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.ja
va:377)
        
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
        
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:717)


Do you know what the problem is? I've had a look at the advice in 
http://ws.apache.org/axiom/userguide/ch04.html with regard to Migrating from 
older Axiom Versions, but I'm not sure if this is the problem, or how to fix it.

Thanks,
John

Dr. John Watt
BSc.(Hons) Ph.D MInstP
Technical Director NeSC

Direct Line: +44 (0)141 330 8647
Fax: +44 (0)141 330 7305
Mobile: 07545 500579
Email: john.w...@glasgow.ac.uk

National e-Science Centre
University of Glasgow
Room 246D, Kelvin Building
University Avenue
G12 8QQ

The University of Glasgow, charity number SC004401


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