Define family of functions and predicates

[Seddryck]

Currently, the functions and the predicates are organized by scope. It would be beneficial to add a new level to the taxon by specifying the family. It will let us group together the functions add, subtract, increment ...

It could be done based on the abstract class inherited. The name of this higher level class is BaseArithmeticFunction, we could transform it in Arithmetic and have this kind of hierarchy

• Numeric
  • Arithmetic
    • add
    • decrement
    • divide
    • increment
    • multiply
    • subtract
    • ...
  • Rounding
    • ceil
    • floor
    • round
    • ...
  • ...
• Text
  • ...
    • ...

Also the full taxon can be perceived as Scope > Family > Function (or Predicate)

• Use family as a new value in the attribute Function and Predicate
• Create a method activated if the value in the attribute is empty to retrieve the last abstract inherited class and parse its name
• organize each function/predicate page to group the functions/predicates by Family
• set quick anchor links on family names
• include the family names as keywords to search on