{"id":"composition-reuse-paradigm-with-complete-creational-map","text":"Composition's status as the validated default reuse paradigm (convergently evolved, scalably grounded, with Template Method as bounded exception) is complemented by a complete mapping of the creational design space (bounded by coupling extremes and identity extremes) — together providing practitioners both the justified reuse strategy (composition by default) and the navigational framework for selecting the creational pattern that best serves a given composition-based design.","truth_value":"IN","source":"","source_url":"","source_hash":"","justifications":[{"type":"SL","antecedents":["composition-paradigm-convergent-and-scalable-with-bounded-exception","creational-spectrum-bounded-by-coupling-extremes"],"outlist":[],"label":"Validated composition paradigm + mapped creational space = complete reuse decision framework"}],"dependents":["actor-framing-governs-composition-realization","composition-paradigm-structurally-and-quantitatively-validated","solid-judgment-guides-complete-design-pipeline","srp-judgment-pipeline-with-creational-instantiation"],"metadata":{"source_type":"derived","review_result":"pass"},"created_at":"2026-06-17T23:58:28+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":"composition-reuse-paradigm-with-complete-creational-map","truth_value":"IN","reason":"SL justification valid","antecedents":["composition-paradigm-convergent-and-scalable-with-bounded-exception","creational-spectrum-bounded-by-coupling-extremes"],"label":"Validated composition paradigm + mapped creational space = complete reuse decision framework"},{"node":"composition-paradigm-convergent-and-scalable-with-bounded-exception","truth_value":"IN","reason":"SL justification valid","antecedents":["composition-convergence-scalably-grounded","template-method-inheritance-bounded-by-composition"],"label":"Composition as validated default + Template Method as precisely bounded exception = complete reuse decision framework"},{"node":"composition-convergence-scalably-grounded","truth_value":"IN","reason":"SL justification valid","antecedents":["convergent-evolution-toward-composition","composition-scalability-doubly-grounded"],"label":"Convergent evolution says composition is right; doubly-grounded scalability says it works at scale"},{"node":"convergent-evolution-toward-composition","truth_value":"IN","reason":"SL justification valid","antecedents":["creational-evolution-inheritance-to-composition","ocp-evolution-validates-composition-shift"],"label":"Two independent evolutionary trajectories converging on composition is stronger than either alone"},{"node":"creational-evolution-inheritance-to-composition","truth_value":"IN","reason":"SL justification valid","antecedents":["factory-method-uses-inheritance-abstract-factory-uses-composition","creational-pattern-evolution-trajectory"],"label":"Creational pattern evolution mirrors the broader GoF shift from inheritance to composition"},{"node":"factory-method-uses-inheritance-abstract-factory-uses-composition","truth_value":"IN","reason":"premise"},{"node":"creational-pattern-evolution-trajectory","truth_value":"IN","reason":"premise"},{"node":"ocp-evolution-validates-composition-shift","truth_value":"IN","reason":"SL justification valid","antecedents":["ocp-evolved-from-inheritance-to-abstraction","composition-superiority-for-reuse"],"label":"OCP's own history recapitulates the broader paradigm shift — convergent validation from principle and practice"},{"node":"ocp-evolved-from-inheritance-to-abstraction","truth_value":"IN","reason":"SL justification valid","antecedents":["ocp-coined-by-meyer-1988","ocp-meyer-vs-polymorphic-interpretation","ocp-polymorphic-version-is-dominant-modern-interpretation"],"label":"OCP's evolution from concrete inheritance to abstract polymorphism parallels and foreshadows the GoF's composition-over-inheritance principle"},{"node":"ocp-coined-by-meyer-1988","truth_value":"IN","reason":"premise"},{"node":"ocp-meyer-vs-polymorphic-interpretation","truth_value":"IN","reason":"premise"},{"node":"ocp-polymorphic-version-is-dominant-modern-interpretation","truth_value":"IN","reason":"premise"},{"node":"composition-superiority-for-reuse","truth_value":"IN","reason":"SL justification valid","antecedents":["favor-composition-over-inheritance","inheritance-breaks-encapsulation","inheritance-compile-time-composition-run-time","delegation-composition-as-powerful-as-inheritance"],"label":"Four independent arguments converge on composition's superiority over inheritance"},{"node":"favor-composition-over-inheritance","truth_value":"IN","reason":"premise"},{"node":"inheritance-breaks-encapsulation","truth_value":"IN","reason":"premise"},{"node":"inheritance-compile-time-composition-run-time","truth_value":"IN","reason":"premise"},{"node":"delegation-composition-as-powerful-as-inheritance","truth_value":"IN","reason":"premise"},{"node":"composition-scalability-doubly-grounded","truth_value":"IN","reason":"SL justification valid","antecedents":["composition-quadruply-evidenced","sharing-infrastructure-enables-scalable-composition"],"label":"Four independent theoretical proofs + practical sharing infrastructure = doubly grounded scalability"},{"node":"composition-quadruply-evidenced","truth_value":"IN","reason":"SL justification valid","antecedents":["composition-paradigm-doubly-validated","dual-proof-composition-prevents-explosion"],"label":"Two independent double-evidence chains (theoretical+practical and structural+structural) merge into four-point convergence for composition superiority"},{"node":"composition-paradigm-doubly-validated","truth_value":"IN","reason":"SL justification valid","antecedents":["ocp-evolution-validates-composition-shift","decorator-proves-composition-scalability"],"label":"Independent theoretical (principle evolution) and empirical (quantitative measurement) convergence on composition"},{"node":"decorator-proves-composition-scalability","truth_value":"IN","reason":"SL justification valid","antecedents":["decorator-avoids-inheritance-explosion","composition-superiority-for-reuse"],"label":"Decorator's avoidance of class explosion quantifies composition's advantage as exponential, not just qualitative"},{"node":"decorator-avoids-inheritance-explosion","truth_value":"IN","reason":"premise"},{"node":"dual-proof-composition-prevents-explosion","truth_value":"IN","reason":"SL justification valid","antecedents":["decorator-proves-composition-scalability","bridge-eliminates-class-explosion"],"label":"Two independent quantitative proofs of composition's advantage across different GoF categories"},{"node":"bridge-eliminates-class-explosion","truth_value":"IN","reason":"premise"},{"node":"sharing-infrastructure-enables-scalable-composition","truth_value":"IN","reason":"SL justification valid","antecedents":["creational-enables-cross-category-sharing","composite-flyweight-scalable-trees"],"label":"Controlled-sharing infrastructure (Singleton registries + Flyweight factories) is the efficiency substrate that makes large-scale composition viable"},{"node":"creational-enables-cross-category-sharing","truth_value":"IN","reason":"SL justification valid","antecedents":["controlled-sharing-meta-pattern","creational-patterns-enable-composition-reuse"],"label":"Depth-3 — controlled-sharing (depth-1) + creational-enable-composition (depth-2) reveal creational patterns as cross-category infrastructure, not just lifecycle management"},{"node":"controlled-sharing-meta-pattern","truth_value":"IN","reason":"SL justification valid","antecedents":["gof-state-subclasses-often-singletons","flyweight-factory-ensures-sharing"],"label":"Depth-1 — two independent base observations (State-as-Singleton and Flyweight-via-Factory) converge on a cross-category meta-pattern where creational mechanisms serve as sharing infrastructure for behavioral and structural patterns"},{"node":"gof-state-subclasses-often-singletons","truth_value":"IN","reason":"premise"},{"node":"flyweight-factory-ensures-sharing","truth_value":"IN","reason":"premise"},{"node":"creational-patterns-enable-composition-reuse","truth_value":"IN","reason":"SL justification valid","antecedents":["factory-method-as-foundational-creational","composition-superiority-for-reuse"],"label":"Composition cannot be flexible without creational abstraction; Factory Method provides that abstraction"},{"node":"factory-method-as-foundational-creational","truth_value":"IN","reason":"SL justification valid","antecedents":["abstract-factory-often-uses-factory-methods","factory-method-called-within-template-methods","iterator-factory-method-creates-appropriate-iterator"],"label":"Factory Method appears as a building block inside three other patterns"},{"node":"abstract-factory-often-uses-factory-methods","truth_value":"IN","reason":"premise"},{"node":"factory-method-called-within-template-methods","truth_value":"IN","reason":"premise"},{"node":"iterator-factory-method-creates-appropriate-iterator","truth_value":"IN","reason":"premise"},{"node":"composite-flyweight-scalable-trees","truth_value":"IN","reason":"SL justification valid","antecedents":["composite-as-universal-recursive-structure","flyweight-solves-composite-sharing"],"label":"Two depth-1 conclusions about Composite's structure and Flyweight's optimization combine into a single scalable-tree design"},{"node":"composite-as-universal-recursive-structure","truth_value":"IN","reason":"SL justification valid","antecedents":["composite-uniform-leaf-composite-treatment","interpreter-abstract-syntax-tree-is-composite","macrocommand-is-composite-of-commands"],"label":"Three distinct patterns reuse Composite's recursive composition structure"},{"node":"composite-uniform-leaf-composite-treatment","truth_value":"IN","reason":"premise"},{"node":"interpreter-abstract-syntax-tree-is-composite","truth_value":"IN","reason":"premise"},{"node":"macrocommand-is-composite-of-commands","truth_value":"IN","reason":"premise"},{"node":"flyweight-solves-composite-sharing","truth_value":"IN","reason":"SL justification valid","antecedents":["flyweight-solves-composite-sharing","flyweight-intrinsic-vs-extrinsic-state","flyweight-doc-editor-180k-chars-480-objects"],"label":"Flyweight's state-splitting mechanism directly solves Composite's sharing problem"},{"node":"flyweight-solves-composite-sharing","truth_value":"IN","reason":"circular dependency"},{"node":"flyweight-intrinsic-vs-extrinsic-state","truth_value":"IN","reason":"premise"},{"node":"flyweight-doc-editor-180k-chars-480-objects","truth_value":"IN","reason":"premise"},{"node":"template-method-inheritance-bounded-by-composition","truth_value":"IN","reason":"SL justification valid","antecedents":["template-method-principled-inheritance-counterexample","decorator-proves-composition-scalability"],"label":"Template Method defines when inheritance works; Decorator proves composition works everywhere else"},{"node":"template-method-principled-inheritance-counterexample","truth_value":"IN","reason":"SL justification valid","antecedents":["template-method-fine-grained-override-control","composition-superiority-for-reuse"],"label":"Template Method is the exception that proves the composition rule by showing when inheritance works"},{"node":"template-method-fine-grained-override-control","truth_value":"IN","reason":"SL justification valid","antecedents":["gof-template-method-five-operation-kinds","hook-operations-overridable-defaults","gof-cpp-template-method-nonvirtual"],"label":"Five operation kinds plus non-virtual skeleton produce the most controlled inheritance in the GoF"},{"node":"gof-template-method-five-operation-kinds","truth_value":"IN","reason":"premise"},{"node":"hook-operations-overridable-defaults","truth_value":"IN","reason":"premise"},{"node":"gof-cpp-template-method-nonvirtual","truth_value":"IN","reason":"premise"},{"node":"creational-spectrum-bounded-by-coupling-extremes","truth_value":"IN","reason":"SL justification valid","antecedents":["prototype-builder-opposite-coupling-extremes","prototype-flyweight-creation-sharing-spectrum"],"label":"Two orthogonal spectra (coupling and identity) define the creational design space boundaries"},{"node":"prototype-builder-opposite-coupling-extremes","truth_value":"IN","reason":"SL justification valid","antecedents":["prototype-constrained-by-clone-complexity","builder-maximally-decoupled-from-product"],"label":"Opposite positions on the product-coupling axis define the creational pattern design space boundaries"},{"node":"prototype-constrained-by-clone-complexity","truth_value":"IN","reason":"SL justification valid","antecedents":["prototype-main-liability-clone-implementation","prototype-deep-copy-required-for-independence","prototype-clone-needs-separate-initialize"],"label":"Three independent implementation challenges compound into a significant adoption barrier"},{"node":"prototype-main-liability-clone-implementation","truth_value":"IN","reason":"premise"},{"node":"prototype-deep-copy-required-for-independence","truth_value":"IN","reason":"premise"},{"node":"prototype-clone-needs-separate-initialize","truth_value":"IN","reason":"premise"},{"node":"builder-maximally-decoupled-from-product","truth_value":"IN","reason":"SL justification valid","antecedents":["builder-products-no-common-parent","builder-can-analyze-without-creating","builder-methods-empty-by-default"],"label":"Three properties uniquely distinguish Builder's decoupling from other creational patterns"},{"node":"builder-products-no-common-parent","truth_value":"IN","reason":"premise"},{"node":"builder-can-analyze-without-creating","truth_value":"IN","reason":"premise"},{"node":"builder-methods-empty-by-default","truth_value":"IN","reason":"premise"},{"node":"prototype-flyweight-creation-sharing-spectrum","truth_value":"IN","reason":"SL justification valid","antecedents":["prototype-creates-objects-by-cloning","controlled-sharing-meta-pattern"],"label":"Prototype (pure creation) and Flyweight (pure sharing) bookend the object identity spectrum"},{"node":"prototype-creates-objects-by-cloning","truth_value":"IN","reason":"premise"}]}}