# 루트의 몫이라고 적힌 두 가지
51:  /**
52:   * The commit-phase classifier the evidence-aware transaction manager is built with.
53:   *
54:   * <p>The manager itself is constructed inside the persistence leaf, through {@code
55:   * EvidenceAwareJpaTransactionManager.standard(entityManagerFactory, clock)}. The composition root
56:   * deliberately does not do it here: that would require {@code jakarta.persistence} and {@code
57:   * org.hibernate} on the composition root's compile classpath, and this repository keeps ORM types
58:   * inside the persistence leaf. What the root owns is the decision — whether to install the
59:   * platform's manager at all — and the classifier it uses.
60:   */
61:  public CommitFailureClassifier commitFailureClassifier() {
62:    return CommitFailureClassifier.standard(clock);
#   그 분류기 팩토리를 부르는 코드: 0
#   이 자동설정 클래스가 스프링 설정인가
29: * <p>Plain construction rather than Spring auto-configuration: this repository's composition root
40:public final class JpaTransactionAutoConfiguration {
#   이 클래스를 쓰는 프로덕션 코드가 부르는 메서드
app-bootstrap/src/main/java/dev/caskeleton/bootstrap/autoconfigure/jpa/JpaPlatformRuntimeAutoConfiguration.java:159:    JpaTransactionAutoConfiguration composition = new JpaTransactionAutoConfiguration(clock);
app-bootstrap/src/main/java/dev/caskeleton/bootstrap/autoconfigure/jpa/JpaPlatformRuntimeAutoConfiguration.java-160-    VendorFailureTranslator vendor = vendorFailures.getIfAvailable();
app-bootstrap/src/main/java/dev/caskeleton/bootstrap/autoconfigure/jpa/JpaPlatformRuntimeAutoConfiguration.java-161-    return vendor == null
app-bootstrap/src/main/java/dev/caskeleton/bootstrap/autoconfigure/jpa/JpaPlatformRuntimeAutoConfiguration.java:172:    return new JpaTransactionAutoConfiguration(clock)
app-bootstrap/src/main/java/dev/caskeleton/bootstrap/autoconfigure/jpa/JpaPlatformRuntimeAutoConfiguration.java-173-        .retryCoordinator(
app-bootstrap/src/main/java/dev/caskeleton/bootstrap/autoconfigure/jpa/JpaPlatformRuntimeAutoConfiguration.java-174-            executor,

# 완료 불명 예외가 만들어지는 유일한 곳과 그것을 부르는 유일한 곳
adapter/outbound/persistence-jpa/src/main/java/dev/caskeleton/adapter/outbound/persistence/transaction/CommitFailureClassifier.java:97:    return new TransactionCompletionUnknownException(
adapter/outbound/persistence-jpa/src/main/java/dev/caskeleton/adapter/outbound/persistence/transaction/EvidenceAwareJpaTransactionManager.java:57:      throw classifier.translateCommitFailure(failure);
#   그 분류기가 프레임에서 꺼내는 값
90:        frame.map(TransactionEvidenceFrame::operation).orElse(UnknownOperation.NAME);
92:        frame.map(present -> between(present.startedAt(), now)).orElse(Duration.ZERO);
93:    int attempt = frame.map(TransactionEvidenceFrame::attempt).orElse(1);
99:        frame.flatMap(TransactionEvidenceFrame::reconciliationKey).orElse(null),
#   단계를 읽는 접근자를 부르는 코드: 0

# 조립되는 실행기는 프레임을 만든다
78-    // REQUIRES_NEW transaction can no longer delete the frame belonging to the one it suspended.
79-    try (TransactionEvidenceScope scope =
80:        TransactionEvidenceContext.begin(operation, transactionKey, clock.instant(), attempt)) {
154:  @ConditionalOnBean(PlatformTransactionManager.class)

# 그 매니저의 순서를 실행하는 테스트가 있는가
#   EvidenceAwareJpaTransactionManagerTest 안의 그 타입 참조: 1
22: * <p>The manager itself needs an {@code EntityManagerFactory}, so what is asserted here is the
24: * manager's own {@code doCommit} ordering is exercised end to end by the commit-ambiguity contract