[Solved] Hibernate Annotations @MapKey

bcaramu · **Joined:** Tue Dec 05, 2006 3:00 am **Posts:** 15

Please Observe below scenario

Code:

Class Responsible{
.....

@MapKey(name = "addressType")
@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY, mappedBy = "responsible")
protected Map<String, ContactAddress> addresses = new HashMap<String, ContactAddress>();

.....
}

Code:

Class ContactAddress {
.....

@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "typeId", unique = true)
protected AddressType addressType = new AddressType();

.....
}

Code:

Class AddressType {
.....

   @Id
   @GeneratedValue(strategy = IDENTITY)
   @Column(name = "typeId", unique = true, nullable = false)
   protected Long            typeId;

.....
}

When Responsible record fetched then the addresses(MAP) is loading with AddressType as key and ContactAddress as values in MAP. But I need AddressType.typeId as key in that MAP.

How can I get that typeId as key in addresses MAP?

Thanks
Ram

mmerder · **Posted:** Tue Mar 03, 2009 8:51 am

Have you tried @MapKey("addressType.typeId")?

Btw typeId is a Long but you define your Map as Map<String, ContactAddress>

bcaramu · **Joined:** Tue Dec 05, 2006 3:00 am **Posts:** 15

Thanks for your Reply

I tried with below

Code:

@MapKey(name = "addressType.typeId")
@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY, mappedBy = "responsible")
protected Map<String, ContactAddress>      addresses            = new HashMap<String, ContactAddress>();

But no use got error like

Caused by: org.hibernate.AnnotationException: Map key property not found: com.cmc.model.ContactAddress.addressType.typeId

bcaramu · **Joined:** Tue Dec 05, 2006 3:00 am **Posts:** 15

Solved with Hibernate MapKey instead of JPA.

Code:

@MapKey(columns=@Column(name="typeId"))

Thanks for Your support.