Potentially. Having the same class loaded in differing class loaders can cause issues if anything ever gets shared. Take a look at the "Classloader Magic" section of this[1] article.
[1] - http://www.objectsource.com/j2eechapters/Ch21-ClassLoaders_and_J2EE.htm Brett -----Original Message----- From: John Watt [mailto:john.w...@glasgow.ac.uk] Sent: Thursday, January 12, 2012 10:13 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 We definitely don't have different versions of the .jars, and a search of the whole filesystem shows only the one version of the axiom jars. However, our Java client is running in the same Tomcat container as the Axis2 service, so I copied some of the libs in the Axis2 lib directory to $CATALINA_HOME/lib for the client to make use of them. Could this duplication cause a problem like the one reported? Thanks! John -----Original Message----- From: Okken,Brett [mailto:bok...@cerner.com] Sent: 12 January 2012 16:02 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 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 ---------------------------------------------------------------------- CONFIDENTIALITY NOTICE This message and any included attachments are from Cerner Corporation and are intended only for the addressee. The information contained in this message is confidential and may constitute inside or non-public information under international, federal, or state securities laws. 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