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Re: [eclipselink-users] problem with criteria The type [null] is not the expected [EntityType] for the key class [class br.com.thinkit.db.Ativos] - try upgrade past 8141.
Daniel,
    Hi, this is unfortunate - I will try to help narrow down the issue.
    You may be experiencing some outstanding issues with the critical child bug 303063 of 266912 that was fixed in rev# 8141 in early Sept 2010, or your issue may be a reproduction of DI 101 depending on the rev# you are running on.  It is hard to narrow down your issue unless we know what type of model you are using (IE: is your @Id singular/composite, is it defined on a @MappedSuperclass superclass or chain), and whether you are running on a container, what type of container (GlassFish?) or just SE (where predeploy and deploy happen in sequence).

    Short answer:
    - check your revision is past 8141 - from my forensic analysis cross-referencing your 152 stack trace line to the 160 expected source - it looks like your rev is pre 8006
https://fisheye2.atlassian.com/changelog/eclipselink/?cs=8141
    - After you refresh past 8141 - verify you are not seeing DI 95 or 101 - that should be fixed
    - see if you are experiencing outstanding DI 101

    Long answer:

    The following issues were fixed surrounding premature metamodel initialization before the metadata was fully processed
http://wiki.eclipse.org/EclipseLink/Development/JPA_2.0/metamodel_api#DI_95:_20091017:_Attribute.getJavaMember.28.29_returns_null_for_a_BasicType_on_a_MappedSuperclass_because_of_an_uninitialized_accessor
http://wiki.eclipse.org/EclipseLink/Development/JPA_2.0/metamodel_api#DI_106:_20100810:_322585:Metamodel_initialization_via_EMF.getMetamodel.28.29_before_EM_deploy_results_in_an_invalid_Metamodel_because_of_UNINITIALIZED_descriptor.initializationStage
https://bugs.eclipse.org/bugs/show_bug.cgi?id=322585
https://fisheye2.atlassian.com/changelog/eclipselink/?cs=8141
https://bugs.eclipse.org/bugs/show_bug.cgi?id=303063

    However, the fix for 322585 in 8141 will not fix all instances (The Metamodel API must assume that all RelationalDescriptors are initialized - with both their class and className set) - we may have a one or more scenarios where the RelationalDescriptor is not ready to use - these are very difficult to reproduce - see the references for design issue 101
http://wiki.eclipse.org/EclipseLink/Development/JPA_2.0/metamodel_api#DI_101:_20100218:_Descriptor.javaClass_is_null_on_a_container_EM_for_a_specific_case
https://bugs.eclipse.org/bugs/show_bug.cgi?id=315041#c6

    The reproduction of DI 101 could only occur if one of the 3 API calls below is called and the underlying ''RelationalDescriptor'' is invalid
       MetamodelImpl.embeddable()
       MetamodelImpl.entity()
       MetamodelImpl.managedType()

    Forensics:
    From your stack trace I see that you have called MetamodelImpl.entity() and that the stacktrace indicates you are on line 152.
    The current trunk version (8492) is 8 lines ahead and would show as :160
at org.eclipse.persistence.internal.jpa.metamodel.MetamodelImpl.entity(MetamodelImpl.java:152)
     The 8 lines were added in SVN rev# 8006 on Aug 6 - you therefore are using a version before 8006 and the larger fix in 8141
https://fisheye2.atlassian.com/browse/eclipselink/trunk/jpa/org.eclipse.persistence.jpa/src/org/eclipse/persistence/internal/jpa/metamodel/MetamodelImpl.java?r2=8006&r1=7480

    I would like to know if your model reproduced DI 101?
    You can also raise an EclipseLink bug so that it can get prioritized and/or voted on.
https://bugs.eclipse.org/bugs/enter_bug.cgi?product=EclipseLink


    thank you
    /michael
    http://www.eclipselink.org

Daniel Gomes-THINK IT wrote:

 

 

Hi, I try to developer one application with netbeans platform (RCP) with eclipselink, but sometimes I got the following error:

 java.lang.IllegalArgumentException: The type [null] is not the expected [EntityType] for the key class [class br.com.thinkit.db.Ativos].

        at org.eclipse.persistence.internal.jpa.metamodel.MetamodelImpl.entity(MetamodelImpl.java:152)

        at br.com.thinkit.ConsultaAtivoImpl.<init>(ConsultaAtivoImpl.java:50)

        at br.com.thinkit.Installer.restored(Installer.java:38)

        at org.netbeans.core.startup.NbInstaller.loadCode(NbInstaller.java:426)

        at org.netbeans.core.startup.NbInstaller.load(NbInstaller.java:366)

        at org.netbeans.ModuleManager.enable(ModuleManager.java:944)

        at org.netbeans.core.startup.ModuleList.installNew(ModuleList.java:318)

        at org.netbeans.core.startup.ModuleList.trigger(ModuleList.java:254)

        at org.netbeans.core.startup.ModuleSystem.restore(ModuleSystem.java:286)

        at org.netbeans.core.startup.Main.getModuleSystem(Main.java:172)

        at org.netbeans.core.startup.Main.start(Main.java:302)

        at org.netbeans.core.startup.TopThreadGroup.run(TopThreadGroup.java:114)

[catch] at java.lang.Thread.run(Thread.java:662)

Daniel Gomes

TI Infra

Tel:+55 (11) 3049-6035

Fax:+55 (11) 3045-9506

 

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