Immutable object-identification

[d2hydro]

We need an immutable object-identification, because:

• We want to be able to link non-hydamo properties to an hydamo-object.
• We want to link our modelled objects to HyDAMO. Models last +/- 5 years. After 5 years we still want to be able to link the model to the object so we can e.g. (1) update the modelled object with new parameters, (2) link modelled results to the object

What we see:

• globalid is still changing between different table versions supplied by water authorities
• nen3610id uses objectid which is the ArcGIS table index. This is quite dangerous as we assume objectid will change when a water authority re-indexes/rebuilds its database

For modelling purposes we propose to use the code column instead to introduce a field model_id to use in models and can be related to objects as long as they have a code:

NL.WBHCODE.{wbhcode}.{layer}.{code}

We'll introduce a method on a HyDAMO layer that will:

• Validate if code is filled; return an exception if it is not
• populate a column with model_id
• add the column to the layer-schema so it is saved when a user writes a geopackage

[d2hydro]

Seems waterbeheercode is only available for water authorities. We need codes for rijkswaterstaat, found objects managed by Provinces and can imagine municipalities manage objects as well. A sollution to solve it all is to start using BGT-codes: https://www.kadaster.nl/-/bgt-bronhoudercodes-per-1-1-2022 as they are available for all authorities. Then:

NL.BGTCODE.{bgt_code}.{layer}.{code} would be the format-string-template