{"id":"decorator-composite-structural-unity-grounds-wrapping-taxonomy","text":"Decorator's structural identity with degenerate Composite (single-child composition with compatible interfaces) provides a structural foundation for part of the wrapping taxonomy's coherence: since Decorator is literally a restriction of the recursive Composite structure, the wrapping spectrum (Proxy→Decorator→Strategy) rests partly on recursive composition rather than being an entirely independent concept. Meanwhile, LSP's behavioral contract framework validates this taxonomy even across the GoF's structural-behavioral classification boundary, suggesting that the spectrum's coherence draws on both structural grounding and orthogonal behavioral correctness guarantees.","truth_value":"IN","source":"","source_url":"","source_hash":"","justifications":[{"type":"SL","antecedents":["decorator-structurally-identical-to-degenerate-composite","wrapping-validated-across-classification-boundary"],"outlist":[],"label":"Decorator-Composite structural unity reveals wrapping as specialized recursive composition"}],"dependents":["decorator-identity-and-order-constrain-wrapping-taxonomy","decorator-triply-characterized-within-wrapping-taxonomy","decorator-wrapping-taxonomy-operationally-sound"],"metadata":{"source_type":"derived","review_result":"invalid","repair_action":"softened"},"created_at":"2026-06-18T01:11:52+00:00","updated_at":"2026-06-18T06:38:34+00:00","reviewed_at":"2026-06-18T06:15:08+00:00","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"decorator-composite-structural-unity-grounds-wrapping-taxonomy","truth_value":"IN","reason":"SL justification valid","antecedents":["decorator-structurally-identical-to-degenerate-composite","wrapping-validated-across-classification-boundary"],"label":"Decorator-Composite structural unity reveals wrapping as specialized recursive composition"},{"node":"decorator-structurally-identical-to-degenerate-composite","truth_value":"IN","reason":"SL justification valid","antecedents":["decorator-transparent-enclosure","decorator-degenerate-composite-one-child"],"label":"Two independent characterizations converge on structural identity with Composite"},{"node":"decorator-transparent-enclosure","truth_value":"IN","reason":"premise"},{"node":"decorator-degenerate-composite-one-child","truth_value":"IN","reason":"premise"},{"node":"wrapping-validated-across-classification-boundary","truth_value":"IN","reason":"SL justification valid","antecedents":["lsp-validates-wrapping-taxonomy","structural-behavioral-wrapping-continuum"],"label":"LSP contracts apply uniformly regardless of whether the wrapper is classified as structural or behavioral"},{"node":"lsp-validates-wrapping-taxonomy","truth_value":"IN","reason":"SL justification valid","antecedents":["lsp-contractual-completeness","wrapping-taxonomy-access-to-algorithm"],"label":"Every level of the Proxy→Decorator→Strategy wrapping depth axis relies on LSP's substitutability contracts"},{"node":"lsp-contractual-completeness","truth_value":"IN","reason":"SL justification valid","antecedents":["lsp-signature-rules-contravariant-covariant","lsp-preconditions-postconditions-invariants-rule","lsp-history-constraint-novel-contribution"],"label":"Three layers form a complete substitutability contract from syntactic to temporal"},{"node":"lsp-signature-rules-contravariant-covariant","truth_value":"IN","reason":"premise"},{"node":"lsp-preconditions-postconditions-invariants-rule","truth_value":"IN","reason":"premise"},{"node":"lsp-history-constraint-novel-contribution","truth_value":"IN","reason":"premise"},{"node":"wrapping-taxonomy-access-to-algorithm","truth_value":"IN","reason":"SL justification valid","antecedents":["proxy-decorator-wrapping-spectrum","skin-vs-guts-extension-spectrum"],"label":"Two depth-1 wrapping spectrums (Proxy-Decorator and Decorator-Strategy) connect at Decorator to form a continuous access→skin→guts taxonomy"},{"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":"skin-vs-guts-extension-spectrum","truth_value":"IN","reason":"SL justification valid","antecedents":["decorator-vs-strategy-skin-vs-guts","gof-template-method-vs-strategy-inheritance-vs-delegation","decorator-dynamic-alternative-to-subclassing"],"label":"Three patterns form a spectrum from external wrapping to internal algorithm replacement"},{"node":"decorator-vs-strategy-skin-vs-guts","truth_value":"IN","reason":"premise"},{"node":"gof-template-method-vs-strategy-inheritance-vs-delegation","truth_value":"IN","reason":"premise"},{"node":"structural-behavioral-wrapping-continuum","truth_value":"IN","reason":"SL justification valid","antecedents":["structural-patterns-boundary-vs-wrapping-spectra","wrapping-taxonomy-access-to-algorithm"],"label":"Structural patterns classify Proxy/Decorator as wrapping patterns; the wrapping taxonomy extends the same axis into behavioral territory (Strategy), so the GoF category boundary is porous"},{"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"}]}}