OK, I just checked in code that should allow this to work. Could you please
test and make sure that it's functioning correctly?
Thanks,
Derek
On 6/16/09, Derek Chen-Becker <dchenbec...@gmail.com> wrote:
>
> Using multiple EMs was not something I had considered when I wrote this. I
> think that I can modify the code to provide a __nameSalt def to
> differentiate instances. Let me work on it and I'll have something soon.
>
> Derek
>
> On 6/16/09, Jean-Luc <jlcane...@gmail.com> wrote:
>>
>> For your information, here is an extract of source code of RequestVarEM :
>>
>> Trait RequestVarEM extends ScalaEntityManager with ScalaEMFactory {
>> object emVar extends RequestVar[EntityManager](openEM()) { ... }
>> }
>>
>> EntityManager is stored in the singleton emVar; so, all db access of Model
>> objects are made using the singleton emVar.
>> => trait RequestVarEM allow only one connection to a database within the
>> same HttpRequest context.
>>
>>
>> Jean-Luc
>>
>> 2009/6/15 Jean-Luc <jlcane...@gmail.com>
>>
>>> Hello,
>>>
>>> I have two databases, db1 (a.k.a. Motorbike) and db2 (a.k.a. Motorway)
>>> defined with RequestVarEM :
>>> - object ModelDb1 extends LocalEMF("db1") with RequestVarEM // Motorbike
>>> database
>>> - object ModelDb2 extends LocalEMF("db2") with RequestVarEM // Motorway
>>> database
>>>
>>> I thought one could access to any databases independently from any
>>> snippet as long as the correct Model object were used (ModelDb1 or ModelDb2
>>> for exemple) ; but when I access both databases from the same page, the
>>> second database access issues a "Named query not found" exception.
>>>
>>> I have two snippets, one to display a list of "motorbike", another to
>>> display a list of "motorway" :
>>> - page1 :
>>> ModelDb1.createNamedQuery[Motorbike]("Motorbike.findAll).getResultList() =>
>>> ok
>>> - page2
>>> : ModelDb2.createNamedQuery[Motorway]("Motorway.findAll).getResultList() =>
>>> ok
>>> - page3 : calling from page 3 motorbike & motorway snippets : Named query
>>> not found: Motorway.findAll
>>> - page4 : calling from page 4 motorway & motorbike snippets : Named query
>>> not found: Motorbike.findAll
>>> - page3 & changing the query of *Motorway* snippet :
>>> -
>>> ModelDb2.createNamedQuery[*Motorbike*]("*Motorbike*.findAll).getResultList()
>>> => it's ok and I do NOT have an exception !
>>>
>>> I joined a sample application, ...
>>>
>>> any idea about this issue ?
>>> (bad use of LocalEMF in the application code ? issue with LocalEMF or
>>> RequestVarEM ?)
>>>
>>> Jean-Luc
>>>
>>> PS :
>>> I don't know if it's related but I have this in the log :
>>> [INFO] Checking for multiple versions of scala
>>> [WARNING] Multiple versions of scala libraries detected!
>>>
>>>
>>> --
>>> Jean-Luc Canela
>>> jlcane...@gmail.com
>>>
>>
>>
>>
>> --
>> Jean-Luc Canela
>> jlcane...@gmail.com
>>
>> >>
>>
>
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Lift" group.
To post to this group, send email to liftweb@googlegroups.com
To unsubscribe from this group, send email to
liftweb+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/liftweb?hl=en
-~----------~----~----~----~------~----~------~--~---
