{"id":"structural-dip-boundary-completeness","text":"Structural patterns exhibit orthogonal organization that can support DIP-aligned boundary management: the boundary spectrum (Adapter/Facade) can help establish the abstraction boundaries that align with DIP across system interfaces at different scales, while the wrapping spectrum (Proxy/Decorator) augments behavior within compatible interface hierarchies for internal flexibility. This two-spectra organization tends to keep these concerns separate, reducing the risk of conflating interface-boundary adaptation with internal behavioral augmentation.","truth_value":"IN","source":"","source_url":"","source_hash":"","justifications":[{"type":"SL","antecedents":["adapter-facade-implements-dip-at-boundaries","structural-patterns-boundary-vs-wrapping-spectra"],"outlist":[],"label":"Structural patterns' two orthogonal spectra ensure DIP boundary management and internal wrapping don't interfere"}],"dependents":["dip-end-to-end-coupling-governance"],"metadata":{"source_type":"derived","review_result":"pass","repair_action":"softened"},"created_at":"2026-06-17T23:12:23+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-dip-boundary-completeness","truth_value":"IN","reason":"SL justification valid","antecedents":["adapter-facade-implements-dip-at-boundaries","structural-patterns-boundary-vs-wrapping-spectra"],"label":"Structural patterns' two orthogonal spectra ensure DIP boundary management and internal wrapping don't interfere"},{"node":"adapter-facade-implements-dip-at-boundaries","truth_value":"IN","reason":"SL justification valid","antecedents":["adapter-facade-interface-boundary-pair","dip-enables-ocp"],"label":"Boundary patterns are the concrete mechanism by which DIP's abstraction requirement is fulfilled at system interfaces"},{"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":"dip-enables-ocp","truth_value":"IN","reason":"SL justification valid","antecedents":["dip-depend-on-abstractions-not-concretions","ocp-open-for-extension-closed-for-modification","program-to-interface-not-implementation"],"label":"Abstraction-dependency is the mechanism enabling extension-without-modification"},{"node":"dip-depend-on-abstractions-not-concretions","truth_value":"IN","reason":"premise"},{"node":"ocp-open-for-extension-closed-for-modification","truth_value":"IN","reason":"premise"},{"node":"program-to-interface-not-implementation","truth_value":"IN","reason":"premise"},{"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":"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"}]}}