我有两个Map实体， AssignmentOpsEntity 以及 ConventionalOptionEntity . 我想移除一个 AssignmentOpsEntity 全部 conventionalOption . 所以我取消了所有的常规选项 AssignmentOpsEntity ，然后我从数据库中删除了常规选项，最后我删除了对象 AssignmentOpsEntity . 但我有下面的错误。
错误：对表“assignmentoptentity”的更新或删除违反了对表“conventionaloptionentity”d的外键约束“fkll31qdog9ye067ybhltjey6u7”é尾 : 键（assignmentopsid）=（8bf4a6b3-c09e-4da1-a88d-d49d9f7b63f6）仍从表“常规选项”中引用。

@Entity
public class AssignmentOpsEntity {

  @OneToMany(mappedBy = "assignmentOps", fetch = FetchType.LAZY, cascade = CascadeType.ALL)
  private Set<ConventionalOptionEntity> conventionalOption;

  public void removeConventionalOption(Set<ConventionalOptionEntity> conventionalOption) {
    this.conventionalOption.removeAll(conventionalOption);
    conventionalOption.forEach(item -> item.assignmentOps(null));
  }

}

@Entity
public class ConventionalOptionEntity {

    @JsonIgnore
    @ManyToOne(fetch = FetchType.LAZY)
    private AssignmentOpsEntity assignmentOps;

}

public void on(OpsDetachedFromAgreementEvent event) {
    Optional<AssignmentOpsEntity> assignmentOpsEntityOptional = assignmentOpsRepository.findById(event.assignmentOpsId);
    if (assignmentOpsEntityOptional.isPresent()) {
        AssignmentOpsEntity assignmentOpsEntity = assignmentOpsEntityOptional.get();
        assignmentOpsEntity.removeConventionalOption(assignmentOpsEntity.getConventionalOption());
        conventionalOptionRepository.deleteAll(assignmentOpsEntity.getConventionalOption());
        assignmentOpsRepository.delete(assignmentOpsEntity);
    }
}