ENSEMBLE: What Adapter do I use for simply running a global check in Ensemble

Hi, I want to create a service which on start will simply go through a list of values in a global and compare dates. If criteria is met, it will send an email.

But what kind of Adapter do I use? I see SQL, FILE, HTTP etc..etc.. But I dont want to use them

Please can you advice on how I should go about this?

Should I create a BS. Class and do onAdapterTASK() and simply build a method? Even then it is asking the kind of adapter I want

Would appreciate some guidance on this

Regards,

Eric