So here's my situation. I'm building a framework, where I'd like to let my 
development team choose to use either sql light or postgres on a shared server 
as the persistent store. 

Using SQLite  lets them do development locally with out having to install 
Postgress on each workstation and or be dependent on a central shared postgres 
server. 

My first thought was to create two different models and then pick one in the 
web.xml file. I'm sure this would work, but the model name would have to be 
different for each model, so as to avoid file name collision. I'm not really 
keen on that idea, because the models are the same and vary only in the values 
in the data node.  And then I thought I could put them in different folders, 
which represented the datanode file.

resources/sqlite/myCayenneModel.xml
resources/postgres/myCayenneModel.xml

But it's not clear to me, how that is handled in the web.xml file.  The filter 
name is the name of the model, no? How do you manage that if the model is not 
at the top level of the classpath? 

After thinking about it, it seems to me the best solution is to ask you all. 

Just to be pedantic here's the problem.

I have two different data models which essentially different only in the value 
of the  data node. 
I want to be able to choose one model at compile time.  
I don't want to have to change any java code to make the choice. I'd prefer to 
just edit the web.xml file. 


Anyone have a solution? 


Tony Giaccone

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