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refactor: hexagonal architecture remediation — transactional engine @Import removal#12
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@enable* annotations are designed to use @import — this is the correct Spring pattern (cf. @EnableScheduling, @EnableCaching, etc.). The anti-pattern we fixed was @import on @autoConfiguration classes. Restore @import(TransactionalEngineConfiguration.class) so the annotation works in both Spring Boot (auto-configuration) and plain Spring contexts (e.g. AnnotationConfigApplicationContext in tests). Conditional configs (persistence, Redis) remain in the .imports file.
TransactionalEngineConfiguration had a default InMemoryTccPersistenceProvider for TCC but no equivalent for Saga. When SagaPersistenceAutoConfiguration is not loaded (e.g. in plain Spring contexts via @EnableTransactionalEngine), SagaEngine creation fails due to missing SagaPersistenceProvider. Add a @ConditionalOnMissingBean default so the core configuration is self-contained, matching the existing TCC pattern.
…rationTest This test requires SagaPersistenceAutoConfiguration and SagaRedisAutoConfiguration for the SagaRecoveryService bean. Add explicit @import to match the pattern already used in SagaRecoveryIntegrationTest. Tests that need specific conditional configs should declare them explicitly rather than relying on @EnableTransactionalEngine to load everything transitively.
casc84ab
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Feb 13, 2026
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LGTM - @EnableTransactionalEngine is now a clean marker annotation. Auto-configuration via .imports is correct.
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Summary
@Import({TransactionalEngineConfiguration, SagaPersistenceAutoConfiguration, SagaRedisAutoConfiguration})from@EnableTransactionalEngineTransactionalEngineConfigurationto.importsfile (Saga configs were already listed)@EnableTransactionalEngineis now a marker-only annotation — auto-configuration is handled entirely via.importsTest Plan