Database.ReadableFromDB__
Description
For representation of AddressedReadFromDBError a special trick is used.
SDL requirements for representation of error is referenced to be
the same as specified for template with such ID:
"ARFDBE_SDLR." ++ (show $ arfdbeEntityType err)So, whenever an instance of ReadableFromDB
is declared, in order to make AddressedReadFromDBError show correctly,
developer must also add an empty template with corresponding ID to PCLT
catalog.
For example, template with ID
"ARFDBE_SDLR.Text.PCLT.Config.PCLT_InnerConfig" is to be added, when
PCLT_InnerConfig is made an instance of
ReadableFromDB.
The content of this template is not important - just leave it empty, it's
never shown. Only it's SDL requirement is important and is used.
In order to keep (show $ string as short
as possible it's recommended to use arfdbeEntityType err)newtype, when type is composite,
like tuple, Either, Map etc.