Reader Feature Type Parameters
Just like readers, feature types have their own set of parameters that control how that feature type (layer/table) is being read. These parameters appear both in the Parameter Editor window and in the Feature Type Properties dialog:
There are general parameters that appear for every feature type, but some feature types have additional parameters below that.
The important thing is that these parameters only apply to a single feature type, whereas a reader parameter would apply to all feature types.
For example, the above screenshot is from a PostGIS database feature type with a parameter to define a WHERE clause. This is a Feature Type parameter because each table might require a different WHERE clause.
Conversely, there is no password parameter for this database table, because authentication applies to the entire database, not the individual tables, so authentication parameters are at the reader level (or in a database connection).
|As with readers, feature type parameters vary by format, and some formats have no extra parameters at all at this level.|