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https://issues.apache.org/jira/browse/GERONIMO-4539?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12675216#action_12675216
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Ivan commented on GERONIMO-4539:
--------------------------------

Thanks for your response, David.
>From what I see, this error occured when no name/unitname is set for the 
>persistentunit annotation, so Geronimo server will try to find a default 
>entitymanagerFactory. In the searching process, there is some logic to check 
>whether we could load the PersistentUnitGBean from the Configuration.

In this scenario, the persistence.xml file is located in the web-module's lib 
folder. So, Geronimo will add a PersistentUnitGBean to the webModule's 
Configuration object.
The abstractName of the webmodule is 
{com.heilgeist.testcase.geronimo.jarfile/my-ear_my-war-1.0-SNAPSHOT.war/1.0-SNAPSHOT/car}?configurationName=com.heilgeist.testcase.geronimo.jarfile/my-ear_my-war-1.0-SNAPSHOT.war/1.0-SNAPSHOT/car

While the PersistentUnitGBean's abstractName is 
{com.heilgeist.testcase.geronimo.jarfile/my-ear/1.0-SNAPSHOT/ear}?J2EEApplication=com.heilgeist.testcase.geronimo.jarfile/my-ear/1.0-SNAPSHOT/ear,PersistenceUnitModule=WEB-INF/lib/my-pu-1.0-SNAPSHOT_inclasses.jar,WebModule=my-war-1.0-SNAPSHOT.war,j2eeType=PersistenceUnit,name=myPU]
 Configuration 
[com.heilgeist.testcase.geronimo.jarfile/my-ear_my-war-1.0-SNAPSHOT.war/1.0-SNAPSHOT/car?configurationName=com.heilgeist.testcase.geronimo.jarfile/my-ear_my-war-1.0-SNAPSHOT.war/1.0-SNAPSHOT/car

Althougth the webmodule's configuration holds the PersistentUnitGBean, but the 
part I quoted with bracket above are not the same. That prevents the code to 
search the default PersistentUnitGBean.

In my initial mind, these parts should be the same. And actually, I output all 
the configurations and its sub-gbeans when server starts up. They are the same, 
not sure why they are different here.
Please point out any mistake if I had made, ^_^



> Deployment failed if JPA PU jar in web module
> ---------------------------------------------
>
>                 Key: GERONIMO-4539
>                 URL: https://issues.apache.org/jira/browse/GERONIMO-4539
>             Project: Geronimo
>          Issue Type: Bug
>      Security Level: public(Regular issues) 
>          Components: deployment
>    Affects Versions: 2.1.4, 2.2
>            Reporter: Forrest Xia
>         Attachments: my-ear-1.0-SNAPSHOT_PUjarinwebclasses_ejbjarinweblib.ear
>
>
> If putting JPA persistence unit jar and JPA entity bean jar in web module 
> WEB-INF/lib, then to deploy it as part of ear, a deployment exception as 
> follows:
> At least one deployment 
> problem:org.apache.geronimo.common.DeploymentException: Could not resolve 
> reference at deploy time for query 
> com.heilgeist.testcase.geronimo.jarfile/my-ear/1.0-SNAPSHOT/ear?J2EEApplication=com.heilgeist.testcase.geronimo.jarfile/my-ear/1.0-SNAPSHOT/ear,PersistenceUnitModule=WEB-INF/lib/my-pu-1.0-SNAPSHOT_inclasses.jar,WebModule=my-war-1.0-SNAPSHOT.war,j2eeType=PersistenceUnit,name=myPU#.
>  No GBean references found.
> org.apache.geronimo.common.DeploymentException: At least one deployment 
> problem:org.apache.geronimo.common.DeploymentException: Could not resolve 
> reference at deploy time for query 
> com.heilgeist.testcase.geronimo.jarfile/my-ear/1.0-SNAPSHOT/ear?J2EEApplication=com.heilgeist.testcase.geronimo.jarfile/my-ear/1.0-SNAPSHOT/ear,PersistenceUnitModule=WEB-INF/lib/my-pu-1.0-SNAPSHOT_inclasses.jar,WebModule=my-war-1.0-SNAPSHOT.war,j2eeType=PersistenceUnit,name=myPU#.
>  No GBean references found.
> at 
> org.apache.geronimo.persistence.builder.PersistenceUnitRefBuilder.buildNaming(PersistenceUnitRefBuilder.java:154)
> at 
> org.apache.geronimo.j2ee.deployment.NamingBuilderCollection.buildNaming(NamingBuilderCollection.java:53)
> at 
> org.apache.geronimo.web25.deployment.AbstractWebModuleBuilder.configureBasicWebModuleAttributes(AbstractWebModuleBuilder.java:842)
> at 
> org.apache.geronimo.tomcat.deployment.TomcatModuleBuilder.addGBeans(TomcatModuleBuilder.java:347)
> at 
> org.apache.geronimo.j2ee.deployment.SwitchingModuleBuilder.addGBeans(SwitchingModuleBuilder.java:165)
> at 
> org.apache.geronimo.j2ee.deployment.EARConfigBuilder.buildConfiguration(EARConfigBuilder.java:647)
> at org.apache.geronimo.deployment.Deployer.deploy(Deployer.java:254)
> at org.apache.geronimo.deployment.Deployer.deploy(Deployer.java:133)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:45)
> at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
> at java.lang.reflect.Method.invoke(Method.java:599)
> at 
> org.apache.geronimo.gbean.runtime.ReflectionMethodInvoker.invoke(ReflectionMethodInvoker.java:34)
> at 
> org.apache.geronimo.gbean.runtime.GBeanOperation.invoke(GBeanOperation.java:124)
> at 
> org.apache.geronimo.gbean.runtime.GBeanInstance.invoke(GBeanInstance.java:867)
> at org.apache.geronimo.kernel.basic.BasicKernel.invoke(BasicKernel.java:239)
> at 
> org.apache.geronimo.deployment.plugin.local.AbstractDeployCommand.doDeploy(AbstractDeployCommand.java:116)
> at 
> org.apache.geronimo.deployment.plugin.local.DistributeCommand.run(DistributeCommand.java:61)
> at java.lang.Thread.run(Thread.java:735)

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