RE: [eclipselink-users] EclipseLinkeclipselink.cache.shared.default pers

[James Sutherland <jamesssss@xxxxxxxxx>]

Yes.


Gschwind, Doug wrote:
> 
> Thanks for that clarification James.
> 
> Additionally, if I obtain a ClassDescriptor reference through the Map
> returned by Session.getDescriptors(), I could call setReadOnly() on all
> ClassDescriptor instances to achieve the same result?
> 
> Thanks,
> 
> Doug
> 
> -----Original Message-----
> From: eclipselink-users-bounces@xxxxxxxxxxx
> [mailto:eclipselink-users-bounces@xxxxxxxxxxx] On Behalf Of James
> Sutherland
> Sent: Monday, October 20, 2008 6:44 AM
> To: eclipselink-users@xxxxxxxxxxx
> Subject: Re: [eclipselink-users]
> EclipseLinkeclipselink.cache.shared.default persistence property
> 
> 
> Nope, "eclipselink.cache.shared.default=true" is the default.
> 
> You can mark a class as read-only using the @ReadOnly annotation or xml.
> 
> Then it will not be cloned.  You can also mark an individual query as
> read-only using the "eclipselink.read-only"="true" hint.
> 
> 
> 
> Gschwind, Doug wrote:
>> 
>> Hello everyone, 
>> 
>> I would like to disable the default implicit copy on read behavior in
>> EclipseLink, for each JPA mapped class in the persistence unit, so
> that
>> each find/read executed by an EntityManager instance always returns
>> EclipseLink's shared cache object references. This is in the context
> of
>> a database extract process, so each JPA mapped object that is hydrated
>> within this context will be treated as immutable. 
>> 
>> Can I get that EclipseLink behavior by specifying the persistence
>> property and value as follows? 
>> 
>> eclipselink.cache.shared.default=true 
>> 
>> I am using the EclipseLink 1.0.1 release.
>> 
>> Thanks, 
>> 
>> Doug
>> 
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> 


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http://wiki.eclipse.org/User:James.sutherland.oracle.com James Sutherland 
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