Actually DataDomains are intended for partitioning data access. Just make
sure you assign a user session DataContext created for appropriate domain.
This works if the total number of access groups is small.
E.g. you can define the following domains in the Modeler: "login"
(shared), "group1", "group2", etc.
Then you may implement the following session flow:
1. Create "login" DataContext based on a shared "login" domain:
DataContext loginCtxt = DataContext.createDataContext("login");
2. Autenticate user, determine her group.
3. Create permanent session DataContext based on the group:
String group = ...
DataContext sessionCtxt = DataContext.createDataContext(group);
I think Michael Gentry had a more detailed example somewhere.
Andrus
> Hello Juergen,
>
> we've solved this for us using:
>
> FileConfiguration lvCayenneFileConfig = new FileConfiguration
> (lvCayenneConfigFile); lvCayenneFileConfig.addFilesystemPath
> (lvCayenneConfigDirectory);
> //System.out.println("--------------------------------->" +
> lvCayenneFileConfig.getProjectFile().getAbsolutePath());
> Configuration.initializeSharedConfiguration (lvCayenneFileConfig);
>
> where lvCayenneFileConfig points to the Directory and Filename where
> Cayenne reads the cayennexyz.xml. We've appended the Portalname of the
> Portal the user has been loged in. So there is a cayenne_info.xml and a
> cayenne_edi.xml ... and so on.
>
> Hope this helps.
>
> Regards
>
> Dirk
>
> Jürgen Saar schrieb:
>> Hi,
>>
>> I think the topic had been discussed in past, but I can't find the
>> thread.
>>
>> I've got the follwing problem:
>>
>> We are developing a kind of info system,
>> where our customers can give access to order informations via web.
>>
>> The problem is, that the orders are not all in one database,
>> the choice of the database depends on the login ...
>>
>> I have no idea how to realize that with cayenne,
>> even if I overide the classes that deal with the datanodes,
>> how can I ensure that cayenne uses the right connection
>> from the pool for the query of the actual login?
>>
>> Thanx
>> --- Juergen ---
>>
>>
>>
>
> --
> Viele Grüße
>
> Dirk Wellmann
> ----------------------------
> PD Software GmbH
> Amalung Straße 16
> 37688 Beverungen
>
> fon.: +49 5275 98 78 0
> fax.: +49 5275 98 78 18
> mail: d..dsoft.de
> www: www.pdsoft.de
> --
> Donald E. Knuth: There are better ways to earn a living than to prevent
> other people from making use of one's contributions to computer
> science.
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