Modularization 2 - manage layer adding cache

[SimonSAMPERE]

2 new modules

Context

Improve plugin operation and make corrections (#180 ).

Achievments

modules/results/display.py

• Issue : Module cache #179

• Commits : f25e18c, 2e77b1d

• Class name : ResultsManager

• Purpose : This class includes two methods of the old ResultsManager class (show_results() and _filepath_builder()) in addition to build_postgis_dict() method from the old UrlBuilder class. The result display works in much the same way as before. This modules/results/display.py corresponds to what remains of the old modules/results.py after removing the cache management and adding the build_postgis_dict() method.

modules/results/cache.py

• Issue : Module cache #179

• Commits : f25e18c, 2ce825e

• Class name : CacheManager

• Purpose : This class includes the 3 methods removed from the old modules/results.py: _cache_dumper(), _cache_loader() and _cache_cleaner() renamed dumper(), loader() and cleaner(). The management of the cache related to the addition of layer is now isolated in this modules/results/cache.py. It manages the storage of inaccessible elements detected during use, the writing of these elements in the JSON cache file, the recovery of these elements from the JSON cache file and the cleaning of this file.

• Improvement : The old cache system only supported inaccessible file paths. This CacheManager has been developed to also store inaccessible services (OGC and ESRI) or databases. The structure of the JSON file has been modified to accommodate these 2 new types of elements while integrating the elements saved in the old cache format. It is therefore possible to manage the cache linked to all layer addition options but the detection of the elements to be cached will be developed later and will be managed in the modules/results/display.py.