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From David Jencks <david_jen...@yahoo.com>
Subject Re: Xerces / JPA and Geronimo
Date Mon, 15 Dec 2008 20:33:09 GMT
Which geronimo, which xerces, and how are you making your xerces  
available to your app?

It's been a very long time since I dealt with this kind of problem but  
I have a faint memory that xml parsers are "endorsed" which basically  
means that classloading for them is completely messed up.  I think you  
may need to put your copy of xerces in <geronimo-home>/lib/endorsed.   
However I get endorsed and ext mixed up and it might be lib/ext.

hope this helps more than it confuses.

david jencks

On Dec 15, 2008, at 10:53 AM, Christian Svensson wrote:

> Hello.
>
> I'm trying to make OpenJPA and Xerces play along.
>
> When I use my code as is without Xerces, everything works until I  
> use new DocumentImpl(); - no surprise there.
>
> When I add my xercesImpl.jar, sometimes it works (I suppose when the  
> ClassLoader hasn't got poisoned) and then it stops when I redeploy:
>  org.apache.openjpa.persistence.PersistenceException:  
> org.apache.xerces.parsers.XIncludeAwareParserConfiguration cannot be  
> cast to org.apache.xerces.xni.parser.XMLParserConfiguration
> 	at  
> org 
> .apache 
> .openjpa 
> .kernel.AbstractBrokerFactory.newBroker(AbstractBrokerFactory.java: 
> 196)
>
> 	at  
> org 
> .apache 
> .openjpa 
> .kernel 
> .DelegatingBrokerFactory.newBroker(DelegatingBrokerFactory.java:142)
> 	at  
> org 
> .apache 
> .openjpa 
> .persistence 
> .EntityManagerFactoryImpl 
> .createEntityManager(EntityManagerFactoryImpl.java:192)
> 	at  
> org 
> .apache 
> .openjpa 
> .persistence 
> .EntityManagerFactoryImpl 
> .createEntityManager(EntityManagerFactoryImpl.java:145)
>
> 	at  
> org 
> .apache 
> .openjpa 
> .persistence 
> .EntityManagerFactoryImpl 
> .createEntityManager(EntityManagerFactoryImpl.java:56)
> 	at org.cmd.web.fileserver.Browser.doGet(Browser.java:51)
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:693)
>
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
> 	at  
> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
> 	at  
> org 
> .apache 
> .geronimo 
> .jetty6 
> .InternalJettyServletHolder.handle(InternalJettyServletHolder.java:65)
>
> 	at  
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java: 
> 362)
> 	at  
> org 
> .mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java: 
> 216)
> 	at  
> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java: 
> 181)
>
> 	at  
> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java: 
> 726)
> 	at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java: 
> 405)
> 	at org.apache.geronimo.jetty6.handler.TwistyWebAppContext.access 
> $101(TwistyWebAppContext.java:40)
>
> 	at org.apache.geronimo.jetty6.handler.TwistyWebAppContext 
> $TwistyHandler.handle(TwistyWebAppContext.java:65)
> 	at  
> org 
> .apache 
> .geronimo 
> .jetty6 
> .handler 
> .ThreadClassloaderHandler.handle(ThreadClassloaderHandler.java:46)
> 	at  
> org 
> .apache 
> .geronimo 
> .jetty6 
> .handler.InstanceContextHandler.handle(InstanceContextHandler.java:58)
>
> 	at  
> org 
> .apache 
> .geronimo 
> .jetty6 
> .handler.UserTransactionHandler.handle(UserTransactionHandler.java:48)
> 	at  
> org 
> .apache 
> .geronimo 
> .jetty6 
> .handler.ComponentContextHandler.handle(ComponentContextHandler.java: 
> 47)
> 	at  
> org 
> .apache 
> .geronimo 
> .jetty6.handler.TwistyWebAppContext.handle(TwistyWebAppContext.java: 
> 59)
>
> 	at  
> org 
> .mortbay 
> .jetty 
> .handler 
> .ContextHandlerCollection.handle(ContextHandlerCollection.java:206)
> 	at  
> org 
> .mortbay 
> .jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
> 	at  
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java: 
> 139)
>
> 	at org.mortbay.jetty.Server.handle(Server.java:324)
> 	at  
> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java: 
> 505)
> 	at org.mortbay.jetty.HttpConnection 
> $RequestHandler.headerComplete(HttpConnection.java:828)
>
> 	at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514)
> 	at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
> 	at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
> 	at  
> org 
> .mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java: 
> 395)
>
> 	at org.apache.geronimo.pool.ThreadPool$1.run(ThreadPool.java:214)
> 	at org.apache.geronimo.pool.ThreadPool 
> $ContextClassLoaderRunnable.run(ThreadPool.java:344)
> 	at java.util.concurrent.ThreadPoolExecutor 
> $Worker.runTask(ThreadPoolExecutor.java:886)
>
> 	at java.util.concurrent.ThreadPoolExecutor 
> $Worker.run(ThreadPoolExecutor.java:908)
> 	at java.lang.Thread.run(Thread.java:619)
> Caused by: java.lang.ClassCastException:  
> org.apache.xerces.parsers.XIncludeAwareParserConfiguration cannot be  
> cast to org.apache.xerces.xni.parser.XMLParserConfiguration
>
> 	at org.apache.xerces.parsers.DOMParser.(Unknown Source)
> 	at org.apache.xerces.parsers.DOMParser.(Unknown Source)
> 	at org.apache.xerces.jaxp.DocumentBuilderImpl.(Unknown Source)
> 	at  
> org 
> .apache 
> .xerces.jaxp.DocumentBuilderFactoryImpl.newDocumentBuilder(Unknown  
> Source)
>
> 	at  
> org.apache.openjpa.lib.xml.XMLFactory.getDOMParser(XMLFactory.java: 
> 107)
> 	at  
> org 
> .apache 
> .openjpa.jdbc.sql.SQLErrorCodeReader.parse(SQLErrorCodeReader.java: 
> 107)
> 	at  
> org 
> .apache 
> .openjpa.jdbc.sql.DBDictionary.endConfiguration(DBDictionary.java: 
> 4128)
>
> 	at  
> org 
> .apache 
> .openjpa 
> .lib.conf.Configurations.configureInstance(Configurations.java:505)
> 	at  
> org 
> .apache 
> .openjpa 
> .lib.conf.Configurations.configureInstance(Configurations.java:430)
> 	at  
> org 
> .apache 
> .openjpa 
> .jdbc 
> .sql.DBDictionaryFactory.newDBDictionary(DBDictionaryFactory.java:155)
>
> 	at  
> org 
> .apache 
> .openjpa 
> .jdbc 
> .sql.DBDictionaryFactory.newDBDictionary(DBDictionaryFactory.java:99)
> 	at  
> org 
> .apache 
> .openjpa 
> .jdbc 
> .conf 
> .JDBCConfigurationImpl 
> .getDBDictionaryInstance(JDBCConfigurationImpl.java:562)
> 	at  
> org 
> .apache 
> .openjpa 
> .jdbc.meta.MappingRepository.endConfiguration(MappingRepository.java: 
> 1265)
>
> 	at  
> org 
> .apache 
> .openjpa 
> .lib.conf.Configurations.configureInstance(Configurations.java:505)
> 	at  
> org 
> .apache 
> .openjpa 
> .lib.conf.Configurations.configureInstance(Configurations.java:430)
> 	at  
> org.apache.openjpa.lib.conf.PluginValue.instantiate(PluginValue.java: 
> 103)
>
> 	at  
> org 
> .apache 
> .openjpa 
> .conf 
> .MetaDataRepositoryValue.instantiate(MetaDataRepositoryValue.java:68)
> 	at  
> org.apache.openjpa.lib.conf.ObjectValue.instantiate(ObjectValue.java: 
> 83)
> 	at  
> org 
> .apache 
> .openjpa 
> .conf 
> .OpenJPAConfigurationImpl 
> .newMetaDataRepositoryInstance(OpenJPAConfigurationImpl.java:863)
>
> 	at  
> org 
> .apache 
> .openjpa 
> .conf 
> .OpenJPAConfigurationImpl 
> .getMetaDataRepositoryInstance(OpenJPAConfigurationImpl.java:854)
> 	at  
> org 
> .apache 
> .openjpa 
> .kernel 
> .AbstractBrokerFactory.makeReadOnly(AbstractBrokerFactory.java:638)
>
> 	at  
> org 
> .apache 
> .openjpa 
> .kernel.AbstractBrokerFactory.newBroker(AbstractBrokerFactory.java: 
> 183)
> 	... 36 more
>
> Caused by:
>
> java.lang.ClassCastException:  
> org.apache.xerces.parsers.XIncludeAwareParserConfiguration cannot be  
> cast to org.apache.xerces.xni.parser.XMLParserConfiguration
>
> 	at org.apache.xerces.parsers.DOMParser.(Unknown Source)
> 	at org.apache.xerces.parsers.DOMParser.(Unknown Source)
> 	at org.apache.xerces.jaxp.DocumentBuilderImpl.(Unknown Source)
> 	at  
> org 
> .apache 
> .xerces.jaxp.DocumentBuilderFactoryImpl.newDocumentBuilder(Unknown  
> Source)
>
> 	at  
> org.apache.openjpa.lib.xml.XMLFactory.getDOMParser(XMLFactory.java: 
> 107)
> 	at  
> org 
> .apache 
> .openjpa.jdbc.sql.SQLErrorCodeReader.parse(SQLErrorCodeReader.java: 
> 107)
> 	at  
> org 
> .apache 
> .openjpa.jdbc.sql.DBDictionary.endConfiguration(DBDictionary.java: 
> 4128)
>
> 	at  
> org 
> .apache 
> .openjpa 
> .lib.conf.Configurations.configureInstance(Configurations.java:505)
> 	at  
> org 
> .apache 
> .openjpa 
> .lib.conf.Configurations.configureInstance(Configurations.java:430)
> 	at  
> org 
> .apache 
> .openjpa 
> .jdbc 
> .sql.DBDictionaryFactory.newDBDictionary(DBDictionaryFactory.java:155)
>
> 	at  
> org 
> .apache 
> .openjpa 
> .jdbc 
> .sql.DBDictionaryFactory.newDBDictionary(DBDictionaryFactory.java:99)
> 	at  
> org 
> .apache 
> .openjpa 
> .jdbc 
> .conf 
> .JDBCConfigurationImpl 
> .getDBDictionaryInstance(JDBCConfigurationImpl.java:562)
> 	at  
> org 
> .apache 
> .openjpa 
> .jdbc.meta.MappingRepository.endConfiguration(MappingRepository.java: 
> 1265)
>
> 	at  
> org 
> .apache 
> .openjpa 
> .lib.conf.Configurations.configureInstance(Configurations.java:505)
> 	at  
> org 
> .apache 
> .openjpa 
> .lib.conf.Configurations.configureInstance(Configurations.java:430)
> 	at  
> org.apache.openjpa.lib.conf.PluginValue.instantiate(PluginValue.java: 
> 103)
>
> 	at  
> org 
> .apache 
> .openjpa 
> .conf 
> .MetaDataRepositoryValue.instantiate(MetaDataRepositoryValue.java:68)
> 	at  
> org.apache.openjpa.lib.conf.ObjectValue.instantiate(ObjectValue.java: 
> 83)
> 	at  
> org 
> .apache 
> .openjpa 
> .conf 
> .OpenJPAConfigurationImpl 
> .newMetaDataRepositoryInstance(OpenJPAConfigurationImpl.java:863)
>
> 	at  
> org 
> .apache 
> .openjpa 
> .conf 
> .OpenJPAConfigurationImpl 
> .getMetaDataRepositoryInstance(OpenJPAConfigurationImpl.java:854)
> 	at  
> org 
> .apache 
> .openjpa 
> .kernel 
> .AbstractBrokerFactory.makeReadOnly(AbstractBrokerFactory.java:638)
>
> 	at  
> org 
> .apache 
> .openjpa 
> .kernel.AbstractBrokerFactory.newBroker(AbstractBrokerFactory.java: 
> 183)
> 	at  
> org 
> .apache 
> .openjpa 
> .kernel 
> .DelegatingBrokerFactory.newBroker(DelegatingBrokerFactory.java:142)
> 	at  
> org 
> .apache 
> .openjpa 
> .persistence 
> .EntityManagerFactoryImpl 
> .createEntityManager(EntityManagerFactoryImpl.java:192)
>
> 	at  
> org 
> .apache 
> .openjpa 
> .persistence 
> .EntityManagerFactoryImpl 
> .createEntityManager(EntityManagerFactoryImpl.java:145)
> 	at  
> org 
> .apache 
> .openjpa 
> .persistence 
> .EntityManagerFactoryImpl 
> .createEntityManager(EntityManagerFactoryImpl.java:56)
>
> 	at org.cmd.web.fileserver.Browser.doGet(Browser.java:51)
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:693)
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
> 	at  
> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
>
> 	at  
> org 
> .apache 
> .geronimo 
> .jetty6 
> .InternalJettyServletHolder.handle(InternalJettyServletHolder.java:65)
> 	at  
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java: 
> 362)
> 	at  
> org 
> .mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java: 
> 216)
>
> 	at  
> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java: 
> 181)
> 	at  
> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java: 
> 726)
> 	at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java: 
> 405)
>
> 	at org.apache.geronimo.jetty6.handler.TwistyWebAppContext.access 
> $101(TwistyWebAppContext.java:40)
> 	at org.apache.geronimo.jetty6.handler.TwistyWebAppContext 
> $TwistyHandler.handle(TwistyWebAppContext.java:65)
> 	at  
> org 
> .apache 
> .geronimo 
> .jetty6 
> .handler 
> .ThreadClassloaderHandler.handle(ThreadClassloaderHandler.java:46)
>
> 	at  
> org 
> .apache 
> .geronimo 
> .jetty6 
> .handler.InstanceContextHandler.handle(InstanceContextHandler.java:58)
> 	at  
> org 
> .apache 
> .geronimo 
> .jetty6 
> .handler.UserTransactionHandler.handle(UserTransactionHandler.java:48)
> 	at  
> org 
> .apache 
> .geronimo 
> .jetty6 
> .handler.ComponentContextHandler.handle(ComponentContextHandler.java: 
> 47)
>
> 	at  
> org 
> .apache 
> .geronimo 
> .jetty6.handler.TwistyWebAppContext.handle(TwistyWebAppContext.java: 
> 59)
> 	at  
> org 
> .mortbay 
> .jetty 
> .handler 
> .ContextHandlerCollection.handle(ContextHandlerCollection.java:206)
> 	at  
> org 
> .mortbay 
> .jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
>
> 	at  
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java: 
> 139)
> 	at org.mortbay.jetty.Server.handle(Server.java:324)
> 	at  
> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java: 
> 505)
> 	at org.mortbay.jetty.HttpConnection 
> $RequestHandler.headerComplete(HttpConnection.java:828)
>
> 	at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514)
> 	at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
> 	at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
> 	at  
> org 
> .mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java: 
> 395)
>
> 	at org.apache.geronimo.pool.ThreadPool$1.run(ThreadPool.java:214)
> 	at org.apache.geronimo.pool.ThreadPool 
> $ContextClassLoaderRunnable.run(ThreadPool.java:344)
> 	at java.util.concurrent.ThreadPoolExecutor 
> $Worker.runTask(ThreadPoolExecutor.java:886)
>
> 	at java.util.concurrent.ThreadPoolExecutor 
> $Worker.run(ThreadPoolExecutor.java:908)
> 	at java.lang.Thread.run(Thread.java:619)
>
> As a novice I see two options:
>
> a) Use the same xerces as OpenJPA - I've been unsuccessful in  
> locating it though.
> b) Shield the application somehow. I know that EARs have hidden- 
> classes, but reading mailing lists it would see that it does not  
> work with Xerces - why I'm not sure.
>
> How do I get around this issue?
>
> Greetings,
> -- 
> Christian Svensson
> Command Systems


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