无法使用dropwizard，hibernate，JPA

Question

实际上，我正在寻找为Web服务之一设计数据模型的最佳方法。我有三个级别的关系。目前无法使用以下数据模型执行数据库操作。

  

Track具有一个或多个Transition Set和每个Transition Set，其中包含一个或多个转换元数据详细信息。

我制作了如下数据模型。我希望我能正确开发数据模型。

 - Track
  - ID
  - Title
  - Artist
  - [Other detail fields]
 - Transition Set
  - ID
  - Track ID
 - Transition Metadata
  - ID
  - Transition Set ID
  - [Other detail Fields] 

实现了这一点，但遇到了有关数据库操作的问题，只获得了第一次转换。

@Entity
@Table(name = "tracks")
public class Track
{
    @Id
    @SequenceGenerator(name = "trackSeq", sequenceName = "seq_tracks_id", allocationSize = 1)
    @GeneratedValue(strategy = GenerationType.IDENTITY, generator = "trackSeq")
    private long id;

    // Other fields

    @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY, targetEntity = TransitionMetadata.class)
    @JsonProperty
    @JoinTable(name = "transition_set", joinColumns = { @JoinColumn(name = "track_id", referencedColumnName = "id",
    table = "tracks") }, inverseJoinColumns = @JoinColumn(name = "id", referencedColumnName = "transition_set_id",
    table = "transition_metadata"))
    private List<TransitionMetadata> transitions = new ArrayList<>();

}

@Entity
@Table(name = "transition_set")
public class TransitionSet
{
    @Id
    @SequenceGenerator(name = "transitionSetSeq", sequenceName = "seq_transition_set_id", allocationSize = 1)
    @GeneratedValue(strategy = GenerationType.IDENTITY, generator = "transitionSetSeq")
    private long id;

    @ManyToOne(cascade = CascadeType.DETACH, optional = true, fetch = FetchType.LAZY)
    @JoinColumn(name = "track_id", referencedColumnName = "id")
    private Track track;
}

@Entity
@Table(name = "transition_metadata")
public class TransitionMetadata
{

    @Id
    @SequenceGenerator(name = "transitionMetadataSeq", sequenceName = "seq_transition_metadata_id", allocationSize = 1)
    @GeneratedValue(strategy = GenerationType.IDENTITY, generator = "transitionMetadataSeq")
    private long id;

    @ManyToOne(fetch = FetchType.EAGER, optional = false, cascade = CascadeType.DETACH)
    @JoinColumn(name = "transition_set_id", referencedColumnName = "id")
    private TransitionSet transitionSet;

    // Other fields
}

看起来我被困在这里，你能不能帮我找出东西。