Re: [eclipselink-users] Object: null is not a known entity type

[ageing student <rsherman315@xxxxxxxxxxx>]

I've debugged up to the point where the EntityManager.remove is called and
the entity is not null at that point. I'm just about to try debugging into
the eclipselink code to see if I can work out what's happening. I.E. find
what I've done wrong.


Tim Hollosy wrote:
> 
> Obvious question that has to be asked, is the entity you're trying to
> remove null?
> 
> /tim
> 
> On Fri, Jun 13, 2008 at 10:04 AM, ageing student
> <rsherman315@xxxxxxxxxxx> wrote:
>>
>> When trying to do a remove of an entity (Product detailed below) and its
>> children I am getting the error.
>>
>>
>> java.lang.IllegalArgumentException: Object: null is not a known entity
>> type.
>>        at
>> org.eclipse.persistence.internal.jpa.EntityManagerImpl.remove(EntityManagerImpl.java:263)
>>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>        at
>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>>        at
>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>>        at
>> org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:194)
>>        at $Proxy31.remove(Unknown Source)
>>        at
>> uk.co.blueskyts.bizservices.product.product.ProductServiceBSImpl.deleteProduct(ProductServiceBSImpl.java:356)
>>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>        at
>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>>        at
>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>>        at
>> org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:310)
>>        at
>> org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
>>        at
>> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
>>        at
>> org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
>>        at
>> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
>>        at
>> org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
>>        at $Proxy32.deleteProduct(Unknown Source)
>>        at BSImplTest.testDeleteProduct(BSImplTest.java:172)
>>
>> @Entity
>> public class Product implements Serializable{
>>  @Id
>>  @Column(nullable = false)
>>  private String id;
>>
>>  @OneToMany(mappedBy = "product", fetch = FetchType.EAGER,
>> cascade={CascadeType.ALL})
>>  private List<ProductName> productNameList;
>>
>>  @OneToMany(mappedBy = "product", fetch = FetchType.EAGER,
>> cascade={CascadeType.ALL})
>>  private List<ProductData> productDataList;
>> }
>>
>> @Entity
>> @IdClass(ProductDataPK.class)
>> public class ProductData implements Serializable{
>>  @Id
>>  @Column(nullable = false)
>>  private String id;
>>
>>  @Id
>>  @Column(name="PR_ID", nullable = false, insertable = false, updatable =
>> false)
>>  private String prId;
>>
>>  @ManyToOne
>>  @JoinColumn(name = "PR_ID", referencedColumnName = "ID")
>>  private Product product;
>> }
>>
>>
>> @Entity
>> @IdClass(ProductNamePK.class)
>> public class ProductName implements Serializable{
>>  @Id
>>  @Column(name="DISTBN_TECHNOLOGY_NO", nullable = false)
>>  private Integer distbnTechnologyNo;
>>
>>  @Id
>>  @Column(name="LOCALE_NO", nullable = false)
>>  private Integer localeNo;
>>
>>  @Column(nullable = false)
>>  private String name;
>>
>>  @Id
>>  @Column(name="PR_ID", nullable = false, insertable = false, updatable =
>> false)
>>  private String prId;
>>
>>  @ManyToOne
>>  @JoinColumn(name = "PR_ID", referencedColumnName = "ID")
>>  private Product product;
>> }
>> --
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>>
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>>
> 
> 
> 
> -- 
> ./tch
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> 
> 

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