2:47 p.m.
I have a Entity (A) that has a List of Bservices and one Baccount record. Bservice and
Baccount both inherit from an abstract class B and are both stored in table B. The code
below is how I thought it should work, but it does not. When I try to deploy it says
there is a "broken column mapping a.id of B". If I change A to have a OneToMany
relationship with Baccount it will deploy but then I get this exception in the client when
I call a.getBs().
| javax.ejb.EJBException: javax.persistence.PersistenceException:
org.hibernate.WrongClassException: Object with id: ... was not of the specified subclass:
bAccount
|
In an attempt to figure out what is going on I commented out all the relationship
information for Baccount so that A had a set of Bservices, but knew nothing of Baccounts.
In this case I got all the B records (both BService and Baccount) when I called a.getBs().
Does a Join ignore the DiscriminatorValues? Shouldn't the inheratence take care of
not populating Bservice with records that have a different discriminator value? If so is
there any way around this to only load Bservices into bs and Baccounts into bAccount,
without writing a query for each and having to execute both queries to load the objects?
| @Entity
| @DiscriminatorValue(value="C")
| public class Bservice extends B implements java.io.Serializable {
|
| private A a;
|
| @ManyToOne(cascade=CascadeType.ALL, fetch=FetchType.EAGER)
| @JoinColumns( { @JoinColumn(name="LOC", insertable=false,
updatable=false),
| @JoinColumn(name="CUST_NO", insertable=false,
updatable=false),
| @JoinColumn(name="CYC_YEAR", insertable=false,
updatable=false),
| @JoinColumn(name="CYC", insertable=false,
updatable=false),
| @JoinColumn(name="CYC_END_DAY", insertable=false,
updatable=false) } )
| public A getA() {
| return a;
| }
|
| public void setA(Aa) {
| this.a= a;
| }
| @Entity
| @DiscriminatorValue(value="A")
| public class Baccount extends B implements java.io.Serializable {
|
| private A a;
|
| @OneToOne(cascade=CascadeType.ALL, fetch=FetchType.EAGER)
| @JoinColumns( { @JoinColumn(name="LOC", insertable=false,
updatable=false),
| @JoinColumn(name="CUST_NO", insertable=false,
updatable=false),
| @JoinColumn(name="CYC_YEAR", insertable=false,
updatable=false),
| @JoinColumn(name="CYC", insertable=false,
updatable=false),
| @JoinColumn(name="CYC_END_DAY", insertable=false,
updatable=false) } )
| public Isumcust getIsumcust() {
| return isumcust;
| }
|
| public void setA(A a) {
| this.a= a;
| }
| }
| @Entity
| @Table(name="A")
| public class A implements java.io.Serializable {
|
| @OneToMany(cascade=CascadeType.ALL, fetch=FetchType.EAGER)
| @JoinColumns( { @JoinColumn(name="LOC", insertable=false,
updatable=false),
| @JoinColumn(name="CUST_NO", insertable=false,
updatable=false),
| @JoinColumn(name="CYC_YEAR", insertable=false,
updatable=false),
| @JoinColumn(name="CYC", insertable=false,
updatable=false),
| @JoinColumn(name="CYC_END_DAY", insertable=false,
updatable=false) } )
| public Set<Bservice> getBs()
| {
| return this.bs;
| }
|
| public void setIsummains( Set<Bservice> bs)
| {
| this.bs= bs;
| }
|
| @OneToOne(cascade=CascadeType.ALL, fetch=FetchType.EAGER)
| @JoinColumns( { @JoinColumn(name="CUST_NO",
referencedColumnName="CUST_NO", insertable=false, updatable=false),
| @JoinColumn(name="CYC_END_DAY",
referencedColumnName="CYC_END_DAY", insertable=false, updatable=false),
| @JoinColumn(name="CYC",
referencedColumnName="CYC", insertable=false, updatable=false),
| @JoinColumn(name="CYC_YEAR",
referencedColumnName="CYC_YEAR", insertable=false, updatable=false),
| @JoinColumn(name="LOC",
referencedColumnName="LOC", insertable=false, updatable=false) } )
| public Baccount getBaccount() {
| return this.bAccount;
| }
|
| public void setIsummainAccount(Baccount bAccount) {
| this.bAccount = bAccount;
| }
|
| }
|
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