also per-node connection params can be passed as properties:
https://cayenne.apache.org/docs/4.1/cayenne-guide/#appendix-a-configuration-properties
<https://cayenne.apache.org/docs/4.1/cayenne-guide/#appendix-a-configuration-properties>
> On Apr 23, 2021, at 10:58 AM, John Huss <johnth...@gmail.com> wrote:
>
> When you create your ServerRuntime you need to supply a custom DI module to
> pass the DB connection parameters, something like this:
>
> *import* org.apache.cayenne.configuration.Constants;
>
> *import* org.apache.cayenne.di.Binder;
>
> *import* org.apache.cayenne.di.MapBuilder;
>
> *import* org.apache.cayenne.di.Module;
>
>
> *public* *class* MyModule *implements* Module {
>
> *public* *void* configure(Binder binder) {
>
> MapBuilder<String> mapBuilder = binder.bindMap(String.*class*, Constants.
> *PROPERTIES_MAP*);
>
> mapBuilder.put(Constants.*JDBC_URL_PROPERTY* +
> ".YourDataDomainName.YourDataNodeName", System.*getenv*("url"));
>
> ...
>
> }
>
> }
>
> On Fri, Apr 23, 2021 at 9:32 AM Tony Giaccone <t...@giaccone.org> wrote:
>
>> I have a datadomain with two datamaps, and two datasource each talking to a
>> different database.
>>
>> Right now, I have had the datasource configured in the config file, but I
>> need to remove that and set it programmatically, from an environment
>> variable. Simple enough to do with a defauldata source, unclear how to do
>> when you have multiple data sources and data nodes.
>>
>> After browsing through the code and the app as it's running, it's unclear
>> to me how to do this.
>>
>> Does anyone know the secret sauce?
>>
>>
>>
>> Tony
>>
