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Re: [eclipselink-users] Primary key foreign key entity relationship issue
|
sorry for the format
============================
@Entity
class A {
@Id
@Column(name="A_ID")
@GeneratedValue(strategy = GenerationType.AUTO)
private String aId;
}
@Entity
@IDClass(BID.class)
class B {
@Column(name="B_ID")
@Id
private int bId;
@Id
@ManyToOne(cascade = ALL)
@JoinColumn(name="A_ID", referencedColumnName="A_ID")
@XmlTransient
private A abc;
}
class BID{
int bId; //same type and name as the id from B
String abc;//must be the same type as A's id, and the attribute must use
the name of the relationship from B
}
==================================
I got the error below:
=================================
Exception [EclipseLink-7150] (Eclipse Persistence Services -
2.0.1.v20100213-r6600):
org.eclipse.persistence.exceptions.ValidationException
Exception Description: Invalid composite primary key specification. The
names of the primary key fields or properties in the primary key class
[ca.gc.rcmp.rtid.entities.SubjectFilePK] and those of the entity bean class
[class ca.gc.rcmp.rtid.entities.SubjectFile] must correspond and their types
must be the same. Also, ensure that you have specified ID elements for the
corresponding attributes in XML and/or an @Id on the corresponding fields or
properties of the entity class.
===================================
christopher delahunt wrote:
>
> Hello,
>
> The exception is occurring because the object model is not complete.
> The specification requires that composite primary keys use an IdClass or
> an EmbeddedId so that there is a key class containing all fields. By
> removing the EmbeddedId, you have removed your pk class - you will need
> to specify the @IdClass to use instead.
>
> Also, using derrivedIds means that the child class must incorporate its
> parent id into its own Id. That means if A has a composite PK, B's ID
> must also include that composite pk class as well as any additional
> fields it uses. I cannot determine which class in your tree is involved
> in the problem, but a simple example would be
>
> @Entity
> class A {
>
> @Id
> @Column(name="A_ID")
> @GeneratedValue(strategy = GenerationType.AUTO)
> private String aId;
> }
>
> @Entity
> @IDClass(BID.class)
> class B {
>
> @Column(name="B_ID")
> @Id
> private int bId;
>
>
> @Id
> @ManyToOne(cascade = ALL)
> @JoinColumn(name="A_ID", referencedColumnName="A_ID")
> @XmlTransient
> private A a;
> }
>
> class BID{
> int bId; //same type and name as the id from B
> String a;//must be the same type as A's id, and the attribute must use
> the name of the relationship from B
> }
>
> If A has a composite pk and uses an embeddable or pk class, B would look
> the same (except for additional join columns of course) but BID might look
> like:
>
> class BID{
> int bId;
> AID a; //the type is the same as A's idclass/embeddedid class.
> }
>
> The specification has some examples at:
> http://jcp.org/en/jsr/detail?id=317
>
> Best Regards,
> Chris
>
> luke2010 wrote:
>> I am using EclipseLink 2.0.1. the error i mentioned is shown up in
>> eclipse
>> IDE, if I ignore this error, and continue running my testcase, it will
>> throw
>> error like below:
>>
>> ==========================
>>
>> junit.framework.AssertionFailedError: Exception in constructor: test1
>> (Local
>> Exception Stack:
>> Exception [EclipseLink-30005] (Eclipse Persistence Services -
>> 2.0.1.v20100213-r6600):
>> org.eclipse.persistence.exceptions.PersistenceUnitLoadingException
>> Exception Description: An exception was thrown while searching for
>> persistence archives with ClassLoader:
>> sun.misc.Launcher$AppClassLoader@1aa6b1
>> Internal Exception: javax.persistence.PersistenceException: Exception
>> [EclipseLink-28018] (Eclipse Persistence Services -
>> 2.0.1.v20100213-r6600):
>> org.eclipse.persistence.exceptions.EntityManagerSetupException
>> Exception Description: Predeployment of PersistenceUnit [brancoch]
>> failed.
>> Internal Exception: java.lang.ClassCastException:
>> org.eclipse.persistence.internal.jpa.metadata.accessors.mappings.IdAccessor
>> at
>> org.eclipse.persistence.exceptions.PersistenceUnitLoadingException.exceptionSearchingForPersistenceResources(PersistenceUnitLoadingException.java:126)
>> at
>> org.eclipse.persistence.jpa.PersistenceProvider.createEntityManagerFactory(PersistenceProvider.java:133)
>> at
>> org.eclipse.persistence.jpa.PersistenceProvider.createEntityManagerFactory(PersistenceProvider.java:65)
>> at
>> javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:83)
>> at
>> javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:60)
>> at
>> ca.gc.rcmp.rtid.entities.test.TestAfisSubject.<init>(TestAfisSubject.java:31)
>> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
>> at
>> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
>> at
>> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
>> at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
>> at junit.framework.TestSuite.createTest(TestSuite.java:61)
>> at junit.framework.TestSuite.addTestMethod(TestSuite.java:283)
>> at junit.framework.TestSuite.<init>(TestSuite.java:146)
>> at
>> org.junit.internal.runners.JUnit38ClassRunner.<init>(JUnit38ClassRunner.java:67)
>> at
>> org.junit.internal.builders.JUnit3Builder.runnerForClass(JUnit3Builder.java:14)
>> at
>> org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
>> at
>> org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:29)
>> at
>> org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
>> at
>> org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:24)
>> at
>> org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.<init>(JUnit4TestReference.java:29)
>> at
>> org.eclipse.jdt.internal.junit4.runner.JUnit4TestClassReference.<init>(JUnit4TestClassReference.java:25)
>> at
>> org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:40)
>> at
>> org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:30)
>> at
>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:452)
>> at
>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
>> at
>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
>> at
>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
>> Caused by: javax.persistence.PersistenceException: Exception
>> [EclipseLink-28018] (Eclipse Persistence Services -
>> 2.0.1.v20100213-r6600):
>> org.eclipse.persistence.exceptions.EntityManagerSetupException
>> Exception Description: Predeployment of PersistenceUnit [brancoch]
>> failed.
>> Internal Exception: java.lang.ClassCastException:
>> org.eclipse.persistence.internal.jpa.metadata.accessors.mappings.IdAccessor
>> at
>> org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.predeploy(EntityManagerSetupImpl.java:991)
>> at
>> org.eclipse.persistence.internal.jpa.deployment.JPAInitializer.callPredeploy(JPAInitializer.java:88)
>> at
>> org.eclipse.persistence.jpa.PersistenceProvider.createEntityManagerFactory(PersistenceProvider.java:124)
>> ... 25 more
>> Caused by: Exception [EclipseLink-28018] (Eclipse Persistence Services -
>> 2.0.1.v20100213-r6600):
>> org.eclipse.persistence.exceptions.EntityManagerSetupException
>> Exception Description: Predeployment of PersistenceUnit [brancoch]
>> failed.
>> Internal Exception: java.lang.ClassCastException:
>> org.eclipse.persistence.internal.jpa.metadata.accessors.mappings.IdAccessor
>> at
>> org.eclipse.persistence.exceptions.EntityManagerSetupException.predeployFailed(EntityManagerSetupException.java:210)
>> ... 28 more
>> Caused by: java.lang.ClassCastException:
>> org.eclipse.persistence.internal.jpa.metadata.accessors.mappings.IdAccessor
>> at
>> org.eclipse.persistence.internal.jpa.metadata.accessors.mappings.ObjectAccessor.processId(ObjectAccessor.java:369)
>> at
>> org.eclipse.persistence.internal.jpa.metadata.accessors.mappings.ObjectAccessor.processOwningMappingKeys(ObjectAccessor.java:595)
>> at
>> org.eclipse.persistence.internal.jpa.metadata.accessors.mappings.OneToOneAccessor.process(OneToOneAccessor.java:158)
>> at
>> org.eclipse.persistence.internal.jpa.metadata.accessors.mappings.RelationshipAccessor.processRelationship(RelationshipAccessor.java:546)
>> at
>> org.eclipse.persistence.internal.jpa.metadata.accessors.classes.ClassAccessor.processDerivedId(ClassAccessor.java:969)
>> at
>> org.eclipse.persistence.internal.jpa.metadata.accessors.classes.EntityAccessor.processDerivedId(EntityAccessor.java:804)
>> at
>> org.eclipse.persistence.internal.jpa.metadata.MetadataProject.processAccessorsWithDerivedIDs(MetadataProject.java:1009)
>> at
>> org.eclipse.persistence.internal.jpa.metadata.MetadataProject.processStage3(MetadataProject.java:1352)
>> at
>> org.eclipse.persistence.internal.jpa.metadata.MetadataProcessor.processORMMetadata(MetadataProcessor.java:462)
>> at
>> org.eclipse.persistence.internal.jpa.deployment.PersistenceUnitProcessor.processORMetadata(PersistenceUnitProcessor.java:390)
>> at
>> org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.predeploy(EntityManagerSetupImpl.java:945)
>> ... 27 more
>> )
>> at junit.framework.Assert.fail(Assert.java:47)
>> at junit.framework.TestSuite$1.runTest(TestSuite.java:97)
>> at junit.framework.TestCase.runBare(TestCase.java:134)
>> at junit.framework.TestResult$1.protect(TestResult.java:110)
>> at junit.framework.TestResult.runProtected(TestResult.java:128)
>> at junit.framework.TestResult.run(TestResult.java:113)
>> at junit.framework.TestCase.run(TestCase.java:124)
>> at junit.framework.TestSuite.runTest(TestSuite.java:232)
>> at junit.framework.TestSuite.run(TestSuite.java:227)
>> at
>> org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:79)
>> at
>> org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:46)
>> at
>> org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
>> at
>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
>> at
>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
>> at
>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
>> at
>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
>>
>> ===========================================
>>
>> The error I mentioned is
>>
>> christopher delahunt wrote:
>>
>>> What version are you using? Can you provide the error and the stack
>>> trace?
>>>
>>> Regards,
>>> Chris
>>>
>>> luke2010 wrote:
>>>
>>>> In my case under eclipseLink 2.0, there are A, B and C entity class.
>>>> A
>>>> has
>>>> 1:M relationship to B, B has 1:1 relationship to C. A has PK aId, B
>>>> has
>>>> PK
>>>> aId, bId, C has PK aId and bId, aId is part of PK of B and C, and also
>>>> FK
>>>> to
>>>> A.
>>>>
>>>> @Entity
>>>> class A {
>>>>
>>>> @Id
>>>> @Column(name="A_ID")
>>>> @GeneratedValue(strategy = GenerationType.AUTO)
>>>> private String aId;
>>>>
>>>> @OneToMany( mappedBy="a", cascade = ALL, targetEntity=B.class)
>>>> @PrivateOwned
>>>> private Set bs;
>>>> }
>>>>
>>>> 1. why mappedBy="a" is always complaining that Attribute named "a" has
>>>> invalid mapping for this relationship. If I removed the @Id in class B
>>>> for
>>>> @ManyToOne, this complain will disappear.
>>>>
>>>> @Entity
>>>> class B {
>>>>
>>>> @Column(name="B_ID")
>>>> @Id
>>>> private int bId;
>>>>
>>>>
>>>> @ManyToOne(cascade = ALL)
>>>> @JoinColumn(name="A_ID", referencedColumnName="A_ID")
>>>> @Id
>>>> @XmlTransient
>>>> private A a;
>>>>
>>>>
>>>> @OneToOne(optional=false, mappedBy="b", cascade = ALL, targetEntity =
>>>> C.class)
>>>> @PrivateOwned
>>>> private C c;
>>>> }
>>>>
>>>>
>>>> 1. why mappedBy="b" is always complaining that Attribute named "b" has
>>>> invalid mapping for this relationship. If I removed the @Id in class C
>>>> for
>>>> @ManyToOne, this complain will disappear. But it will compain other
>>>> thing
>>>> "Entity "C" has no Id or EmbeddedId"
>>>>
>>>> @Entity
>>>> Class C{
>>>>
>>>> @OneToOne(optional = false)
>>>> @JoinColumns({
>>>> @JoinColumn(name="A_ID", referencedColumnName="A_ID", insertable =
>>>> false,
>>>> updatable = false),
>>>> @JoinColumn(name="B_ID", referencedColumnName="B_ID", insertable =
>>>> false,
>>>> updatable = false),
>>>> })
>>>> @XmlTransient
>>>> @Id
>>>> private B b;
>>>> }
>>>>
>>>>
>>>>
>>>>
>>> _______________________________________________
>>> eclipselink-users mailing list
>>> eclipselink-users@xxxxxxxxxxx
>>> https://dev.eclipse.org/mailman/listinfo/eclipselink-users
>>>
>>>
>>>
>>
>>
> _______________________________________________
> eclipselink-users mailing list
> eclipselink-users@xxxxxxxxxxx
> https://dev.eclipse.org/mailman/listinfo/eclipselink-users
>
>
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