integraality currently only supports properties (and properties with qualifiers).

There is no reason we could not support computing completion for labels and/or descriptions in a given language (Originally reported by @Raimund-Liebert-WMAT).

To sort out:

Syntax

We need a syntax for configuring this in the {Property dashboard template}.

Integraality so far borrowed the Listeria syntax:

• labels use label/xx (with xx the language code, eg label/de)
• description use description ; there does not seem to support languages, but we could extend naturally to description/xx

Although I find the QuickStatements syntax maybe more elegant:

• labels use Lxx (with xx the langcode)
• descriptions use Dxx (ditto)

→ TODO: decide on which syntax to use.

SPARQL

We need the relevant SPARQL queries for:

• Items within a group with a given label
• Items within a group without a given label
• Items with no group with a given label
• Items with no group without a given label
• Total Items with a given label
• Total Items without a given label

Coding

First rough plan:

1. in property_statistics.py:
   1. Create an equivalent to PropertyConfig (or extend it?) for Labels/Descriptions
   2. Create all methods with the SPARQL queries
   3. Get these methods used:
      1. Either if/else call them in the make_*
      2. Alternatively, move these methods to the PropertyConfig object, and rely on polymorphism.
2. in pages_processor, extend parse_config_properties to support the new syntax and create the 1.A object.