Thursday, February 24, 2011

Apex Listener Resource Templates

An early adopter version 1.1 of the Apex Listener was released a while back.

Along with the software download there is a developer's guide that describes a new feature of the listener, called Resource Templates. From the guide:

Oracle Application Express Listener enables data stored in an Oracle Database to be exposed via RESTful Application Programming Interfaces (APIs).
The guide continues:

RESTful APIs are created by configuring 'Resource Templates'. A Resource Template is a configuration file that binds a set of URIs to a SQL query or anonymous PL/SQL block. The set of URIs is identified by a 'URI Template', a simple syntax for describing URIs e.g. people/{userid}. The URI Template may contain zero or more parameters ( e.g. {userid}) which along with the HTTP Headers sent with a HTTP request can be bound to parameters in the SQL query or anonymous PL/SQL block. 

This is a very interesting feature that can be used outside of the Apex framework (ie in a barebones PL/SQL web application). Personally, I would prefer to be able to configure the resource templates somewhere in the database (in a special table and/or a predefined PL/SQL API), rather than messing around with the listener configuration, but the concept itself is a good one.

Anyway, it's an interesting read, so do take a look if you haven't already done so.

No comments: