{"id":"structural-patterns-boundary-vs-wrapping-spectra","text":"Structural patterns organize into two orthogonal spectra: boundary patterns (Adapter/Facade) translate between incompatible interfaces at system edges with different granularities, while wrapping patterns (Proxy/Decorator) augment behavior within a single compatible interface hierarchy with different intents.","truth_value":"IN","source":"","source_url":"","source_hash":"","justifications":[{"type":"SL","antecedents":["adapter-facade-interface-boundary-pair","proxy-decorator-wrapping-spectrum"],"outlist":[],"label":"Two orthogonal structural axes — translation across interfaces vs augmentation within a single interface"}],"dependents":["structural-behavioral-wrapping-continuum","structural-boundary-and-behavioral-wrapping-spectra-unify-structural-patterns","structural-complete-flexibility","structural-dip-boundary-completeness"],"metadata":{"source_type":"derived","review_result":"pass"},"created_at":"2026-06-17T18:04:42+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":"structural-patterns-boundary-vs-wrapping-spectra","truth_value":"IN","reason":"SL justification valid","antecedents":["adapter-facade-interface-boundary-pair","proxy-decorator-wrapping-spectrum"],"label":"Two orthogonal structural axes — translation across interfaces vs augmentation within a single interface"},{"node":"adapter-facade-interface-boundary-pair","truth_value":"IN","reason":"SL justification valid","antecedents":["facade-vs-adapter-new-vs-existing-interface","adapter-after-design-bridge-before-design","facade-defines-higher-level-interface-to-subsystem"],"label":"Two structural patterns addressing interface boundaries at complementary granularities"},{"node":"facade-vs-adapter-new-vs-existing-interface","truth_value":"IN","reason":"premise"},{"node":"adapter-after-design-bridge-before-design","truth_value":"IN","reason":"premise"},{"node":"facade-defines-higher-level-interface-to-subsystem","truth_value":"IN","reason":"premise"},{"node":"proxy-decorator-wrapping-spectrum","truth_value":"IN","reason":"SL justification valid","antecedents":["proxy-vs-decorator-static-vs-dynamic","decorator-dynamic-alternative-to-subclassing","decorator-transparent-enclosure"],"label":"Three base beliefs on wrapping semantics unify into a spectrum from dynamic enhancement to static access control"},{"node":"proxy-vs-decorator-static-vs-dynamic","truth_value":"IN","reason":"premise"},{"node":"decorator-dynamic-alternative-to-subclassing","truth_value":"IN","reason":"premise"},{"node":"decorator-transparent-enclosure","truth_value":"IN","reason":"premise"}]}}