{"id":"registry-singleton-controlled-sharing-infrastructure-stack","text":"The registry meta-mechanism (Prototype Manager and Singleton Registry converging on key-to-instance lookup) and the controlled-sharing meta-pattern (State-as-Singleton and Flyweight-via-Factory converging on creational sharing infrastructure) are two layers of a single creational infrastructure stack: registries provide the lookup mechanism while controlled sharing provides the instance management policy, together enabling the GoF's cross-category sharing architecture.","truth_value":"IN","source":"","source_url":"","source_hash":"","justifications":[{"type":"SL","antecedents":["registry-meta-mechanism-spans-creational-patterns","controlled-sharing-meta-pattern"],"outlist":[],"label":"Two independently identified meta-mechanisms (registry lookup + controlled sharing) form complementary layers of the same creational infrastructure"}],"dependents":[],"metadata":{"source_type":"derived","review_result":"pass"},"created_at":"2026-06-18T02:19:13+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":"registry-singleton-controlled-sharing-infrastructure-stack","truth_value":"IN","reason":"SL justification valid","antecedents":["registry-meta-mechanism-spans-creational-patterns","controlled-sharing-meta-pattern"],"label":"Two independently identified meta-mechanisms (registry lookup + controlled sharing) form complementary layers of the same creational infrastructure"},{"node":"registry-meta-mechanism-spans-creational-patterns","truth_value":"IN","reason":"SL justification valid","antecedents":["prototype-manager-registry","singleton-registry-for-subclass-selection"],"label":"Both patterns independently converge on the same key-to-instance lookup mechanism for the same purpose (decoupling client from class hierarchy)"},{"node":"prototype-manager-registry","truth_value":"IN","reason":"premise"},{"node":"singleton-registry-for-subclass-selection","truth_value":"IN","reason":"premise"},{"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"}]}}