Eclipse Community Forums: EclipseLink » OneToOne lazy relationship was already fetched?

Help

Home

Home » Eclipse Projects » EclipseLink » OneToOne lazy relationship was already fetched?

Show: Today's Messages :: Show Polls :: Message Navigator

OneToOne lazy relationship was already fetched? [message #604491]

Tue, 21 September 2010 19:33

Mauro Flores

Messages: 84
Registered: September 2009
Location: Brasil

Member

How can I know if an lazy OneToOne (Or a ManyToOne) relationship was already loaded ?
I'm working with eclipselink 1.2.1.

For an OneToMany or ManyToMany relationship, I get the Collection (or Map) content and see if it is an IndirectCollection. But with a XxxToOne, if I get the content the fetch is executed.

Thanks. Mauro.

Report message to a moderator

Re: OneToOne lazy relationship was already fetched? [message #628641 is a reply to message #604491]

Thu, 23 September 2010 13:58

James Sutherland

Messages: 1939
Registered: July 2009
Location: Ottawa, Canada

Senior Member

The best way is probably to get the ClassDescriptor for the class from the EclipseLink Session (from the JpaEntityManager), then get the OneToOneMapping from the descriptor and ask it if the attribute is instantiated, (mapping.isAttributeValueInstantiated(entity)).

This will work for OneToMany as well, (note just because it is an IndirectCollection, does not mean that it may not be instantiated already).

James : Wiki : Book : Blog : Twitter

Report message to a moderator

Previous Topic:	Chain of eager relationships
Next Topic:	Trouble upgrading from EclipseLink 1.1.2 to 2.1.1 in Spring 2.5

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Fri Apr 26 20:42:38 GMT 2024

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter