{"id":"decorator-distinct-compositional-niche","text":"The Decorator pattern occupies a distinct compositional niche differentiated along two axes: from Adapter by preserving interface while changing responsibilities (not converting interfaces), and from Composite by adding responsibilities to individual objects rather than modeling part-whole hierarchies — positioning Decorator uniquely as the single-object responsibility-augmentation pattern.","truth_value":"IN","source":"","source_url":"","source_hash":"","justifications":[{"type":"SL","antecedents":["decorator-vs-adapter-responsibilities-not-interface","composite-vs-decorator-different-intents"],"outlist":[],"label":"Depth-1 — triangulating Decorator's position from two differentiation axes (vs Adapter and vs Composite) identifies its unique niche in a way neither comparison alone does"}],"dependents":["decorator-confirmed-in-wrapping-taxonomy","decorator-domain-generality-validates-embellishment-abstraction","decorator-niche-identity-bounded"],"metadata":{"source_type":"derived","review_result":"pass"},"created_at":"2026-06-17T19:12:32+00:00","updated_at":"2026-06-18T06:15:08+00:00","reviewed_at":"2026-06-18T06:15:08+00:00","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"decorator-distinct-compositional-niche","truth_value":"IN","reason":"SL justification valid","antecedents":["decorator-vs-adapter-responsibilities-not-interface","composite-vs-decorator-different-intents"],"label":"Depth-1 — triangulating Decorator's position from two differentiation axes (vs Adapter and vs Composite) identifies its unique niche in a way neither comparison alone does"},{"node":"decorator-vs-adapter-responsibilities-not-interface","truth_value":"IN","reason":"premise"},{"node":"composite-vs-decorator-different-intents","truth_value":"IN","reason":"premise"}]}}