Middlewares

[Sibyx]

The additional computational processes for statistical analysis can be managed through middleware that implement the library interface. These middleware will execute in a specified sequence, post GPX parsing, following the basic statistical computations (or the library may include some middleware for elementary stats by default). To better understand my concept, consider the code below. It is merely a rough draft, hence open to modifications.

$phpgpx = new \phpGPX();

$phpgpx->middlewares->add(new \phpGPX\Middlewares\GpxReductionSmoothingMiddleware(2, 5));
$phpgpx->middlewares->add(new \phpGPX\Middlewares\TrackPointExtensionStatsMiddleware());
$phpgpx->middlewares->add(new CustomMiddleware());

$file = $phpgpx->load('example.gpx');

Implementing such a layer should substantially simplify the extension or modification of the library's behavior. I aim to develop a preliminary model for this layer. This should enhance the library's configurability (I'm not particularly fond of the current use of constants for this purpose).

Originally posted by @Sibyx in #67 (comment)