Re: Jaxb 2.1 API

Tue, 03 Jun 2008 18:24:44 -0700 


On Jun 3, 2008, at 2:40 PM, Jonathan Gallimore wrote:


Hi,
I managed to set up a test which reproduced this. I found a couple of ways around the problem: 

Thanks, Jonathan!
One way was to use JDK 1.6 (I could only reproduce your error with 1.5, but maybe that's just my machine...)
Also note, that JDK 1.6 is faster *and* you don't need the javaagent (yay!). Not having the javaagent is certainly a nice thing all by itself.
The other way was to remove javaee-api-5.0.1 from my classpath, and replace it with the various Java EE spec jars from Geronimo. Specifically I had to use the following: 

axis2-jaxws-api-1.3
geronimo-activation_1.1_spec
geronimo-annotation_1.0_spec
geronimo-ejb_3.0_spec
geronimo-interceptor_3.0_spec
geronimo-j2ee-connector_1.5_spec
geronimo-jacc_1.1_spec
geronimo-jms_1.1_spec
geronimo-jpa_3.0_spec
geronimo-jta_1.1_spec
geronimo-stax-api_1.0_spec
geronimo-ws-metadata_2.0_spec
jaxb-api-2.1.3


That's exactly right.
This feels pretty nasty to me though, I'm not sure I really recommend it. I don't know what your production environment is, but I definitely wouldn't start swapping out jars in a standalone OpenEJB server/ OpenEJB-Tomcat / Geronimo setup (and I guess if you're using the standalone server or the Tomcat plugin you might run into the same issue when you deploy your app).
I think it's a fine suggestion, swapping out jars in OpenEJB or OpenEJB + Tomcat isn't such a big issue. In fact we shipped with all those individual jars in 3.0-beta-1 but it was just a lot to look at and a lot to deal with in your IDE or build system so we compacted them down to one jar.
I'm happy to look at doing some work on the OpenEJB javaee-api jar, or on the server itself to try and come up with a more elegant solution, but I think it would need a sanity check from one of the other developers first (any thoughts, anyone?).
We should definitely document this at the least. We could add a page just for this "Jaxb 1.1" topic and the workarounds you point out. If we start getting a lot of hits on it, we could look at other options. Maybe rolling up a second javaee-api jar of some kind that doesn't include jaxb (might have been a bad idea to include it). Maybe even a tool on the website that allows people to click a few checkboxes and get all the apis and versions they want (could work). 

-David



Amah Ahite wrote:

Hi,
I am using openejb to test a code that use jaxb-impl-2.1.3.jar which
requires Jaxb 2.1 API.
The openejb javaee-api.jar, that seems to be loaded first by the
classloader, contains Jaxb API 2.0 and make my test failed.
I noticed that Jaxb 2.0 is the one required by Java EE specs but I would like to known whether there is a simple way to override this in OpenEJB? 

Thanks in advance

The exception is:

javax.naming.NamingException: Attempted to load OpenEJB. OpenEJB has
encountered a fatal error and cannot be started: The Assembler encountered an unexpected error while attempting to build the container system.: JAXB 
2.0 API jar is being loaded (from
jar:file:/C:/repo/org/apache/openejb/javaee-api/5.0-1/javaee- api-5.0-1.jar!/javax/xml/bind/annotation/XmlSchema.class), 
but this RI (from
jar:file:/C:/repo/com/sun/xml/bind/jaxb-impl/2.1.3/jaxb- impl-2.1.3.jar!/com/sun/xml/bind/v2/model/impl/ModelBuilder.class) 
requires JAXB 2.1 API jar. [Root exception is
org.apache.openejb.OpenEJBException: OpenEJB has encountered a fatal error and cannot be started: The Assembler encountered an unexpected error while attempting to build the container system.: JAXB 2.0 API jar is being loaded 
(from
jar:file:/C:/repo/org/apache/openejb/javaee-api/5.0-1/javaee- api-5.0-1.jar!/javax/xml/bind/annotation/XmlSchema.class), 
but this RI (from
jar:file:/C:/repo/com/sun/xml/bind/jaxb-impl/2.1.3/jaxb- impl-2.1.3.jar!/com/sun/xml/bind/v2/model/impl/ModelBuilder.class) 
requires JAXB 2.1 API jar.]
        at
org .apache .openejb .client .LocalInitialContextFactory.init(LocalInitialContextFactory.java:53) 
        at
org .apache .openejb .client .LocalInitialContextFactory .getInitialContext(LocalInitialContextFactory.java:40) at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java: 667) at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java: 247) 
        at javax.naming.InitialContext.init(InitialContext.java:223)
        at javax.naming.InitialContext.<init>(InitialContext.java:197)
        at
posttrade .rbk .service .distributor .mediator.xontro.ctrl.CommandTest.setUp(CommandTest.java:18) 
        at junit.framework.TestCase.runBare(TestCase.java:125)
        at junit.framework.TestResult$1.protect(TestResult.java:106)
        at junit.framework.TestResult.runProtected(TestResult.java:124)
        at junit.framework.TestResult.run(TestResult.java:109)
        at junit.framework.TestCase.run(TestCase.java:118)
        at junit.framework.TestSuite.runTest(TestSuite.java:208)
        at junit.framework.TestSuite.run(TestSuite.java:203)
        at
org .eclipse .jdt .internal .junit .runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130) 
        at
org .eclipse .jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) 
        at
org .eclipse .jdt .internal .junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460) 
        at
org .eclipse .jdt .internal .junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673) 
        at
org .eclipse .jdt .internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java: 386) 
        at
org .eclipse .jdt .internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java: 196) Caused by: org.apache.openejb.OpenEJBException: OpenEJB has encountered a fatal error and cannot be started: The Assembler encountered an unexpected error while attempting to build the container system.: JAXB 2.0 API jar is 
being loaded (from
jar:file:/C:/repo/org/apache/openejb/javaee-api/5.0-1/javaee- api-5.0-1.jar!/javax/xml/bind/annotation/XmlSchema.class), 
but this RI (from
jar:file:/C:/repo/com/sun/xml/bind/jaxb-impl/2.1.3/jaxb- impl-2.1.3.jar!/com/sun/xml/bind/v2/model/impl/ModelBuilder.class) 
requires JAXB 2.1 API jar.
        at org.apache.openejb.OpenEJB$Instance.<init>(OpenEJB.java:156)
        at org.apache.openejb.OpenEJB.init(OpenEJB.java:288)
        at org.apache.openejb.OpenEJB.init(OpenEJB.java:267)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at
sun .reflect .NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
        at
sun .reflect .DelegatingMethodAccessorImpl .invoke(DelegatingMethodAccessorImpl.java:25) 
        at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.openejb.loader.OpenEJBInstance.init(OpenEJBInstance.java: 36) 
        at
org .apache .openejb .client .LocalInitialContextFactory.init(LocalInitialContextFactory.java:62) 
        at
org .apache .openejb .client .LocalInitialContextFactory.init(LocalInitialContextFactory.java:51) 
        ... 19 more
Caused by: java.lang.LinkageError: JAXB 2.0 API jar is being loaded (from jar:file:/C:/repo/org/apache/openejb/javaee-api/5.0-1/javaee- api-5.0-1.jar!/javax/xml/bind/annotation/XmlSchema.class), 
but this RI (from
jar:file:/C:/repo/com/sun/xml/bind/jaxb-impl/2.1.3/jaxb- impl-2.1.3.jar!/com/sun/xml/bind/v2/model/impl/ModelBuilder.class) 
requires JAXB 2.1 API jar.
        at
com .sun.xml.bind.v2.model.impl.ModelBuilder.<clinit>(ModelBuilder.java: 136) 
        at
com .sun .xml .bind .v2.runtime.JAXBContextImpl.getTypeInfoSet(JAXBContextImpl.java:406) 
        at
com .sun .xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:270) 
        at
com .sun.xml.bind.v2.ContextFactory.createContext(ContextFactory.java: 103) at com .sun.xml.bind.v2.ContextFactory.createContext(ContextFactory.java:81) 
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at
sun .reflect .NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
        at
sun .reflect .DelegatingMethodAccessorImpl .invoke(DelegatingMethodAccessorImpl.java:25) 
        at java.lang.reflect.Method.invoke(Method.java:585)
        at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:210)
        at javax.xml.bind.ContextFinder.find(ContextFinder.java:368)
        at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:574)
        at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:522)
        at
org .apache.openejb.config.sys.JaxbOpenejb.getContext(JaxbOpenejb.java: 295) 
        at
org .apache.openejb.config.sys.JaxbOpenejb.unmarshal(JaxbOpenejb.java: 310) 
        at
org .apache.openejb.config.sys.JaxbOpenejb.readConfig(JaxbOpenejb.java: 216) 
        at
org .apache .openejb .config .ConfigurationFactory .getOpenEjbConfiguration(ConfigurationFactory.java:253) at org.apache.openejb.assembler.classic.Assembler.build(Assembler.java: 249) 
        at org.apache.openejb.OpenEJB$Instance.<init>(OpenEJB.java:149)
        ... 28 more

Reply via email to