Expression Language

• CURIE: gmeow:ExpressionLanguage
• IRI: https://blackcatinformatics.ca/gmeow/ExpressionLanguage
• Category: class
• Defined by: gmeow:slices/norms
• Box roles: TBox role (What is this?)

The language of a condition expression — an OPEN value vocabulary seeded with the policy-engine and query languages GMEOW projects to: prose, SPARQL ASK, CEL, Rego, Cedar, XACML, SHACL. Open: new engines join without schema change.

Structure

Subclass of: gufo:QualityValue

Practical Pattern

Use gmeow:ExpressionLanguage as a specialized kind of gufo:QualityValue. Add statement metadata or a standpoint when the assertion needs provenance, confidence, or vantage.

Usage Advice

Use when

• Use as the value vocabulary for the condition-expression-language axis — the seeded engines (prose, SPARQL ASK, CEL, Rego, Cedar, XACML, SHACL) a formalization declares via gmeow:expressionLanguage.

Avoid when

• Avoid minting per-language subclasses (languages are individuals) and avoid using it for the expression source itself (that is gmeow:expressionText).

How to use

• Reference the seeded language individuals from an expression; extend the axis for a new policy engine by minting a fresh gmeow:ExpressionLanguage individual rather than a subclass.

Examples

• ex:exprLangCedarV2 a gmeow:ExpressionLanguage; rdfs:label "Cedar v2"@en.