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Domain Data Filters

Structural filters answer what something is — its type, category, position in the hierarchy.

Domain data filters answer what something means — its classification, coding, or business intent. This data drives scope decisions at a higher level: not "give me all doors" but "give me all elements classified under assembly code 32.31".

What you will learn

  • How to filter by Assembly Code using an explicit list
  • How to use regex to match structured Assembly Code patterns
  • How to correctly filter FamilyInstance objects by category via their FamilySymbol
  • How to chain Family → FamilySymbol → FamilyInstance into a single production-grade filter

Pages in this section

Filter by Assembly Code

How to scope a rule to specific Assembly Codes using an inclusion list. Explains why Assembly Code lives on the FamilySymbol, not the instance.

Filter by Assembly Code — Regex

How to use a regular expression to match structured Assembly Code patterns. Includes a real-world example and guidance on testing regex with regex101.com.

Filter FamilyInstances by Category via Symbol

The correct two-step approach for filtering placed elements by category: first filter the symbols, then the instances. Explains why direct category filtering on instances is fragile.

Chain — Family, Symbol, Instance

A complete three-level filter chain combining naming conventions, editability, category, and classification into one rule. The production pattern to build towards.

Prerequisites

You should already understand: