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Re: [eclipselink-users] Help with static weaving on OC4J seeing ._toplink_setmyColumn
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Alright, let's get down to it.
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0"
xmlns="http://java.sun.com/xml/ns/persistence";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd";>
<persistence-unit name="CSHCSModel" transaction-type="RESOURCE_LOCAL">
....omitting entities
<!-- <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>-->
<properties>
<property name="eclipselink.jdbc.bind-parameters" value="true" />
<property name="eclipselink.logging.level" value="FINEST"/>
<property name="eclipselink.jdbc.batch-writing" value="JDBC"/>
<property name="eclipselink.cache.shared.default" value="false"/>
<property name="eclipselink.weaving.fetchgroups" value="false" />
<property name="eclipselink.target-server" value="OC4J" />
<property name="eclipselink.weaving.changetracking" value="false" />
<property name="eclipselink.weaving" value="static" />
<property name="eclipselink.weaving.lazy" value="true"/>
<property name="eclipselink.logging.logger"
value="org.eclipse.persistence.logging.CommonsLoggingSessionLog"/>
</properties>
</persistence-unit>
</persistence>
So, I'm statically weaving as part of my build process in eclipse --
if I don't do this spring freaks out anyway, so I don't mind doing
this.
I'm getting my EM from spring with @PersistenceContext, here's the
relevant spring stuff.
<bean id="jpaAdapter"
class="org.springframework.orm.jpa.vendor.EclipseLinkJpaVendorAdapter">
<property name="databasePlatform"
value="org.eclipse.persistence.platform.database.oracle.OraclePlatform" />
<property name="showSql" value="true" />
</bean>
<context:load-time-weaver />
<!-- <context:load-time-weaver
weaver-class="org.springframework.instrument.classloading.oc4j.OC4JLoadTimeWeaver"
/>-->
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceUnitName" value="CSHCSModel" />
<property name="dataSource" ref="dataSource" />
<property name="jpaVendorAdapter" ref="jpaAdapter" />
<!-- <property name="loadTimeWeaver" ref="loadTimeWeaver"/> -->
</bean>
I've tried with and without enabling the loadTimeWeaver, it doesn't
seem to make a difference.
Classloader stack, all of this closing/destroying happens during predeployment.
10/07/08 10:16:27 ClassLoader closing: myapp.root:0.0.0 (ID #1f23303)
at oracle.classloader.util.ClassLoadTracing$LoaderListener.loaderClosing(ClassLoadTracing.java:821)
at oracle.classloader.EventDispatcher.loaderClosing(EventDispatcher.java:238)
at oracle.classloader.PolicyClassLoader.close(PolicyClassLoader.java:1109)
at oracle.classloader.PolicyClassLoader.close(PolicyClassLoader.java:1069)
at com.evermind.server.ApplicationStateRunning.destroyClassLoaders(ApplicationStateRunning.java:1201)
at com.evermind.server.Application.stateCleanUp(Application.java:3766)
at com.evermind.server.Application.destroy(Application.java:802)
at com.evermind.server.ApplicationServer.uninstall(ApplicationServer.java:2890)
at com.evermind.server.ApplicationServer.uninstall(ApplicationServer.java:2832)
at oracle.oc4j.admin.internal.ApplicationUnDeployer.doUndeploy(ApplicationUnDeployer.java:161)
at oracle.oc4j.admin.internal.UnDeployerBase.execute(UnDeployerBase.java:94)
at oracle.oc4j.admin.internal.UnDeployerBase.execute(UnDeployerBase.java:73)
at oracle.oc4j.admin.internal.ApplicationDeployer.undo(ApplicationDeployer.java:384)
at oracle.oc4j.admin.internal.DeployerBase.execute(DeployerBase.java:132)
at oracle.oc4j.admin.jmx.server.mbeans.deploy.OC4JDeployerRunnable.doRun(OC4JDeployerRunnable.java:52)
at oracle.oc4j.admin.jmx.server.mbeans.deploy.DeployerRunnable.run(DeployerRunnable.java:81)
at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:298)
at java.lang.Thread.run(Thread.java:595)
10/07/08 10:16:27 ClassLoader closing: myapp.web.CSHCS:0.0.0 (ID #1f64d29)
at oracle.classloader.util.ClassLoadTracing$LoaderListener.loaderClosing(ClassLoadTracing.java:821)
at oracle.classloader.EventDispatcher.loaderClosing(EventDispatcher.java:238)
at oracle.classloader.PolicyClassLoader.close(PolicyClassLoader.java:1109)
at oracle.classloader.PolicyClassLoader.close(PolicyClassLoader.java:1126)
at oracle.classloader.PolicyClassLoader.close(PolicyClassLoader.java:1069)
at com.evermind.server.ApplicationStateRunning.destroyClassLoaders(ApplicationStateRunning.java:1201)
at com.evermind.server.Application.stateCleanUp(Application.java:3766)
at com.evermind.server.Application.destroy(Application.java:802)
at com.evermind.server.ApplicationServer.uninstall(ApplicationServer.java:2890)
at com.evermind.server.ApplicationServer.uninstall(ApplicationServer.java:2832)
at oracle.oc4j.admin.internal.ApplicationUnDeployer.doUndeploy(ApplicationUnDeployer.java:161)
at oracle.oc4j.admin.internal.UnDeployerBase.execute(UnDeployerBase.java:94)
at oracle.oc4j.admin.internal.UnDeployerBase.execute(UnDeployerBase.java:73)
at oracle.oc4j.admin.internal.ApplicationDeployer.undo(ApplicationDeployer.java:384)
at oracle.oc4j.admin.internal.DeployerBase.execute(DeployerBase.java:132)
at oracle.oc4j.admin.jmx.server.mbeans.deploy.OC4JDeployerRunnable.doRun(OC4JDeployerRunnable.java:52)
at oracle.oc4j.admin.jmx.server.mbeans.deploy.DeployerRunnable.run(DeployerRunnable.java:81)
at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:298)
at java.lang.Thread.run(Thread.java:595)
I'll try your idea of tricking toplink into not weaving right now. I
think i'm just suffering from ignorance on the whole container vs app
managed persistence unit stuff.
Thanks a ton, I'm trying to get eclipselink out there and used in big
organizations, but if I can't get it rolling on their software it's
going to be a tough sell :)
./tch
On Thu, Jul 8, 2010 at 11:17 AM, Christopher Delahunt
<christopher.delahunt@xxxxxxxxxx> wrote:
> Hello Tim,
>
> What does your persistence.xml look like? What seems to be happening is the
> container also tries to deploy the EntityManager rather than just Spring -
> are you using a JTA em or accessing the the EntityManager from the container
> directly (vs from Spring classes/injection or resource_local transaction
> type).
>
> It 'should' work if you specify EclipseLink as the provider, as the agent
> will weave classes correctly, and these classes will be used by Spring, but
> I suspect something with the configuration or application is causing the
> Container managed EM to be used/loaded instead of just the Spring manged
> one. Can you send the classloader exception stack that you mentioned? What
> could work around the issue is to add the TopLink Essentials property to not
> use weaving (using the toplink.weaving property with a value of false), and
> the EclipseLink one to use Static weaving, and leave the provider blank.
> This will allow the Container manged EM (vie TopLink Essentials) to deploy
> without the classloader closed exception, but not have it look for the
> _toplink_methods or weave them into the Entities getters/setters. Your
> get/set methods will already have been woven with the _eclipseLink_methods
> used for lazy loading etc if you have run the static weavers, so the Spring
> em should function correctly.
>
> Best Regards,
> Chris
>
>
>
> On 08/07/2010 10:51 AM, Tim Hollosy wrote:
>
> Still banging my head on this, I might just have to see about dumping
> OC4J, because it's just getting ridiculous.
>
> Final symptoms:
> If i define eclipselink as my persistence provider, oc4j predeploys
> the persistence unit and then when Spring tries to initialize it, the
> classloader for my app is already closed.
>
> If I don't tell oc4j my persistence provider in persistence.xml then
> it uses toplink essentials in the background, even though spring is
> using the eclipselink adapater. This seems to completely not matter at
> all until I try to access a statically weaved method which must at
> that point hand off stuff to the container, because the container now
> wants to call the toplink weaved getters and setters.
>
> Can anyone think of a work around here, or post a working config set
> for a oc4j/spring/eclipselink project. I mean, it's not that far off
> to want to use the oracle ejb 3 container + an oracle product with
> spring!
>
> ./tch
>
>
>
> On Tue, Jul 6, 2010 at 3:10 PM, Tim Hollosy <hollosyt@xxxxxxxxx> wrote:
>
>
> Thanks James.
> I'm not sure how I would even go about removing spring, since the app
> uses spring for _everything_.
>
> I am using the static weaving ant task, and when I left the provider
> off I get a stack trace when doing field accessing on a lazy field.
> The trace is this:
>
> So, it looks like it's like an odd mix of toplink weaved methods on my
> eclipslink weaved class. If I try to set the persistence provider to
> eclipselink I get the ClassLoader issues the first time I try to
> access the app.
>
>
>
> java.lang.NoSuchMethodError:
> com.redacted.Enrollment._toplink_setclientRec(Lcom/redacted/Client;)V
> at com.redacted.Enrollment._persistence_set(Enrollment.java)
> at
> org.eclipse.persistence.internal.descriptors.PersistenceObjectAttributeAccessor.setAttributeValueInObject(PersistenceObjectAttributeAccessor.java:46)
> at
> org.eclipse.persistence.mappings.DatabaseMapping.setAttributeValueInObject(DatabaseMapping.java:1367)
> at
> org.eclipse.persistence.mappings.ForeignReferenceMapping.buildCloneFromRow(ForeignReferenceMapping.java:198)
> at
> org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildAttributesIntoWorkingCopyClone(ObjectBuilder.java:1260)
> at
> org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildWorkingCopyCloneFromRow(ObjectBuilder.java:1381)
> at
> org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObjectInUnitOfWork(ObjectBuilder.java:547)
>
>
> ./tch
>
>
>
> On Tue, Jul 6, 2010 at 2:55 PM, James Sutherland <jamesssss@xxxxxxxxx>
> wrote:
>
>
> I think the reason you get EclipseLink even when to setting the provider in
> OC4J is that you have set EclipseLink in your Spring config file, so Spring
> is ensuring that EclipseLink is being used.
>
> I think your class loader issue may be a conflict between using Spring
> inside OC4J where both have their own class loaders.
>
> You should use the static weaving ant task, and set weaving to static.
>
> You may want to try deploying to OC4J without Spring, to see if you issues
> are Spring related.
>
>
>
> tch wrote:
>
>
> I'm probably talking to myself here, but here's what I've determined
> so far today.
>
> I disabled static weaving in my persistence.xml and deployed in two
> different ways.
>
> Once, while leaving my persistence provider blank.
>
> When the application deployed I see al the EL Config weaving
> messages,etc. So I know that my app IS using Eclipselink, even though
> I did not define a persistence provider. When I start up the app and
> try to make my first DB connection spring starts up EL again and
> everything works great.
>
> Now, I edit the persistence.xml to specify EL as the persistence
> provider and restart the server. I get all the same EL Config messages
> as the server starts up. When I try to access the app this time, I get
> the ClassLoader error about the ClassLoader for my app already being
> closed.
>
> I inspect both ClassLoader log outputs, both times indeed the
> ClassLoader for my app is closed after predeployment of the
> persistence unit. However, there must be something special happening
> when I define the persistence provider, because only then do I get the
> class loader errors. Of course my end game here is to use Lazy Loading
> so I would think it should be possible to statically weave a spring
> app on oc4j with eclipselink.
>
>
> Once again any ideas on debugging this would be much appreciated.
>
> Some relevant spring EL config stuff:
>
> <bean id="jpaAdapter"
>
> class="org.springframework.orm.jpa.vendor.EclipseLinkJpaVendorAdapter">
> <property name="databasePlatform"
>
> value="org.eclipse.persistence.platform.database.oracle.OraclePlatform"
> />
> <property name="showSql" value="true" />
> </bean>
>
> <bean id="entityManagerFactory"
>
> class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
> <property name="persistenceUnitName" value="CSHCSModel" />
> <property name="dataSource" ref="dataSource" />
> <property name="jpaVendorAdapter" ref="jpaAdapter" />
> </bean>
>
> ./tch
>
>
>
> On Sat, Jul 3, 2010 at 1:54 PM, Tim Hollosy <hollosyt@xxxxxxxxx> wrote:
>
>
> This has been bothering me all weekend, I just don't understand enough
> about the guts of this EJB 3 stuff.
>
> So, some background. In the past I had a spring application deployed
> to OC4J with eclipselink 1.x, I didn't specify a provider so I just
> kind of assumed when I deployed it was using eclipselink as the
> provider since my DAO's all referenced the Eclipselink packages for
> query classes, etc. Now, I'm not sure if I used any weaving or not,
> though I think I do in that app. So what code base is really
> executing? Toplink essentials since I don't tell the container who the
> provider is, even though I reference all the EL packages in my code?
>
> So, anyway. I was having some issues with spring and EL 1, with
> weaving. It just didn't want to work sometimes. So I decided on this
> next app to move on to EL 2 and just statically weave. In my dev
> container (jetty) everything is working great. The first deploy to
> OC4J works fine as well. Though, in this first deploy I'm not using
> any weaving features. My next deploy I actually attempt to use lazy
> loading, etc. This time it fails, with my original error message. I
> tried removing the el jar's out of my WEB-INF/lib and adding them as a
> shared lib, and I get all these classloader issues I detailed later in
> the thread. Which I can only think has something do with Spring,
> though it's over my head.
>
> Is what you're saying though that I could try to weave my jar with the
> toplink essentials weaver and my code would work in OC4J? Which code
> base would be used though? I use some JPA 2 features in my new
> project, would that even work. I wouldn't have to reference toplink
> essentials packages in my DAO's etc?
>
> Thanks for your help, I'm really trying to understand the guts of how
> this actually works
>
>
> ./tch
>
>
>
>
>
>
> -----
> http://wiki.eclipse.org/User:James.sutherland.oracle.com James Sutherland
> http://www.eclipse.org/eclipselink/
> EclipseLink , http://www.oracle.com/technology/products/ias/toplink/
> TopLink
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> http://wiki.oracle.com/page/TopLink TopLink
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> http://www.nabble.com/EclipseLink-f26430.html EclipseLink
> Book: http://en.wikibooks.org/wiki/Java_Persistence Java Persistence
> --
> View this message in context:
> http://old.nabble.com/Help-with-static-weaving-on-OC4J-seeing-._toplink_setmyColumn-tp29058272p29086725.html
> Sent from the EclipseLink - Users mailing list archive at Nabble.com.
>
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