On Feb 4, 2006, at 8:31 AM, Joe Bohn wrote:
Here's an update on where I'm at with this and to see if anybody
has any other ideas (thanks for the help I've already received from
David Jencks and Matt).
The classloader problem appears to be coming from the jetty
deployment of daytrader during the configs build. By trial and
error I discovered that this appears to have nothing to do with
OpenEJB or OpenEJB-deployer as we once thought but rather jetty-
deployer.
Can you explain your reasoning? The stack trace looks like it is
coming out of the openejb builder.
Here's a graph of the jetty-deployer parent dependencies (I
followed Matt's lead on creating text diagrams :-) ).
geronimo-gbean-deployer j2ee-server
A A
| parent |
|------------------------------|
|
j2ee-deployer jetty
A A
| parent |
|----------------------|
|
jetty-deployer
Debug messages seem to indicate that the classloader in question is
the geroniom-gbean-deployer class loader and I have had some
marginal success (ie. changing the problem) by including
dependencies in this config. However, I can't quite make sense of it.
As dain mentioned, including more in the geronimo-gbean-deployer
classpath is definitely the wrong approach. I believe you need to
figure out why that classloader is being used rather than the openejb
config classloader which is the one that should contain the tranql
classes.
It is possible that we need to supply a classloader such as the
openejb-builder classloader to the proxy construction code. I would
start by double checking that the openejb config classloader actually
has the tranql classes in it and that the openejb-builder config
classloader can therefore load them.
thanks
david jencks
geronimo-gbean-deployer never had a dependency to rmi-naming to
begin with. On the other hand, both the jetty config and the j2ee-
server config do have a dependency to rmi-naming. So I would have
thought that adding the tranql dependency here would improve
things. But it had no effect at all. However, it changes the
problem if I add the tranql dependency to geronimo-gbean-deployer.
I then get this error:
26979 [main] ERROR org.apache.geronimo.deployment.Deployer -
Deployment failed due to
java.lang.NoClassDefFoundError: javax/transaction/TransactionManager
With Matt's help I found this class in the jta spec and added a
dependency for that as well to geronimo-gbean-deployer which then
resulted in this error:
14371 [main] ERROR org.apache.geronimo.deployment.Deployer -
Deployment failed due to
java.lang.LinkageError: loader constraints violated when linking
javax/transaction/UserTransaction class
I'm not even sure exactly what a LinkageError is .... but I wonder
if I'm just chasing my tail anyway. Having the dependency on
tranql et. al. in geroniom-gbean-deployer might not be any better
than having it in rmi-naming (still seems misplaced).
Any hints/suggestions are welcome.
BTW, out of about 22 questionable jars included in the minimal
tomcat assembly I was able to remove 19 of them with the minimal
assembly still functioning. Of course, I can only make these
changes for that assembly if I can get around these side-effect
problems in other configurations and assemblies.
Joe
Joe Bohn wrote:
I'm looking to eliminate some of the unnecessary dependencies
defined in our modules and configurations so that we can build
smaller assemblies.
While investigating what would be necessary to remove the tranql
jar from the minimal assembly I removed a dependency to tranql in
the rmi-naming configuration.
I expected some problems, but the result I received is a bit
strange. I get the NoClassDefFoundError listed below when
deploying (as part of the build) the configuration for Daytrader.
Is this expected based upon removing the tranql dependency from
rmi-naming or is there something strange going on with the
classloaders?
+----------------------------------------
| configurations Daytrader using derby deployed on jetty
| Memory: 52M/63M
+----------------------------------------
DEPRECATED: the default goal should be specified in the <build>
section of project.xml instead of maven.xml
DEPRECATED: the default goal should be specified in the <build>
section of project.xml instead of maven.xml
build:end:
You are working offline so the build will continue, but geronimo-
daytrader-derby-db-1.1-SNAPSHOT.jar may be out of date!
You are working offline so the build will continue, but daytrader-
ear-1.1-SNAPSHOT.ear may be out of date!
build:start:
multiproject:install-callback:
[echo] Running car:install for Daytrader using derby deployed
on jetty
Retrieving document at 'WEB-INF/wsdl/TradeServices.wsdl'.
Retrieving document at 'META-INF/wsdl/TradeServices.wsdl'.
Retrieving document at 'WEB-INF/wsdl/TradeServices.wsdl'.
143877 [main] ERROR org.apache.geronimo.deployment.Deployer -
Deployment failed due to
java.lang.NoClassDefFoundError: org/tranql/ejb/EJBProxyFactory
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:539)
at java.security.SecureClassLoader.defineClass
(SecureClassLoader.java:123)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:
251)
at java.net.URLClassLoader.access$100(URLClassLoader.java:55)
at java.net.URLClassLoader$1.run(URLClassLoader.java:194)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
at
org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass
(MultiParentClassLoader.java:209) at
java.lang.ClassLoader.loadClass(ClassLoader.java:235)
at
org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass
(MultiParentClassLoader.java:201) at
java.lang.ClassLoader.loadClass(ClassLoader.java:235)
at
org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass
(MultiParentClassLoader.java:201) at
java.lang.ClassLoader.loadClass(ClassLoader.java:235)
at java.lang.ClassLoader.loadClassInternal
(ClassLoader.java:302)
at
org.openejb.deployment.OpenEJBModuleBuilder.createEJBProxyFactory
(OpenEJBModuleBuilder.java:579) at
org.openejb.deployment.CMPEntityBuilder$1.buildEJBProxyFactory
(CMPEntityBuilder.java:125) at
org.openejb.deployment.SchemataBuilder.processEnterpriseBeans
(SchemataBuilder.java:306) ...
Thanks,
Joe
---
Joe Bohn
joe.bohn at earthlink.net
"He is no fool who gives what he cannot keep, to gain what he
cannot lose." -- Jim Elliot
--
Joe Bohn
joe.bohn at earthlink.net
"He is no fool who gives what he cannot keep, to gain what he
cannot lose." -- Jim Elliot
