Как удалить дочерние записи с использованием Spring Data JPA

Question

У меня возникло множество проблем с удалением дочерних записей с использованием JPA. Рассмотрим приведенные ниже отображения. Я пытаюсь удалить все данные state в таблице jobs. Когда он будет удален, он будет каскадно удалять все цепи. Вот цепочка:

Работа -> Состояние -> TaskState -> Шаг

При попытке удалить state из job таблицы он установлен в NULL. Однако он не каскадируется по цепочке. Как я могу это сделать?

Вот как я удаление данных:

@Transactional 
public void runJob(Long id) throws IOException, JAXBException { 

     Job job = jobRepository.findOne(id); 

     if(job.getState() != null){ 
      State stateObj = stateRepository.findOne(job.getState().getId()); 
      stateObj.setTasks(null); 
      stateRepository.delete(stateObj); 
     } 

     job.setState(null); 
     jobRepository.save(job); 
} 

Работа:

@Entity 
@Table(name = "jobs") 
public class Job implements Serializable { 

    private static final long serialVersionUID = 1L; 

    @Id 
    @GeneratedValue(strategy = GenerationType.IDENTITY) 
    @Column(name = "id") 
    private Long id; 
    @Column(name = "name") 
    private String name; 
    @Column(name = "description") 
    private String description; 
    @Temporal(TemporalType.TIMESTAMP) 
    private Date date; 
    @OneToOne 
    private Image image; 
    @OneToOne(cascade = CascadeType.ALL, orphanRemoval = true, fetch = FetchType.EAGER) 
    private State state; 
    @OneToMany 
    private List<Task> tasks; 
    @Column(name = "status") 
    @Enumerated(EnumType.STRING) 
    private JobStatusEnum status; 
    @ManyToMany 
    private List<Device> devices; 
    @OneToMany 
    private List<JobRun> runs; 
    @OneToMany 
    private List<Container> containers; 

    public Job() { 
     this.image = new Image(); 
     this.status = JobStatusEnum.New; 
     this.devices = new ArrayList<>(); 
     this.runs = new ArrayList<>(); 
     this.containers = new ArrayList<>(); 
    } 

    public Job(String name, String description, Date date, Image image, State state, List<Task> tasks, JobStatusEnum status, List<Device> devices, List<JobRun> runs, List<Container> containers) { 
     this.name = name; 
     this.description = description; 
     this.date = date; 
     this.image = image; 
     this.state = state; 
     this.tasks = tasks; 
     this.status = status; 
     this.devices = devices; 
     this.runs = runs; 
     this.containers = containers; 
    } 

    public Long getId() { 
     return id; 
    } 

    public void setId(Long id) { 
     this.id = id; 
    } 

    public String getName() { 
     return name; 
    } 

    public void setName(String name) { 
     this.name = name; 
    } 

    public String getDescription() { 
     return description; 
    } 

    public void setDescription(String description) { 
     this.description = description; 
    } 

    public Date getDate() { 
     return date; 
    } 

    public void setDate(Date date) { 
     this.date = date; 
    } 

    public Image getImage() { 
     return image; 
    } 

    public void setImage(Image image) { 
     this.image = image; 
    } 

    public State getState() { 
     return state; 
    } 

    public void setState(State state) { 
     this.state = state; 
    } 

    public List<Task> getTasks() { 
     return tasks; 
    } 

    public void setTasks(List<Task> tasks) { 
     this.tasks = tasks; 
    } 

    public JobStatusEnum getStatus() { 
     return status; 
    } 

    public void setStatus(JobStatusEnum status) { 
     this.status = status; 
    } 

    public List<Device> getDevices() { 
     return devices; 
    } 

    public void setDevices(List<Device> devices) { 
     this.devices = devices; 
    } 

    public List<JobRun> getRuns() { 
     return runs; 
    } 

    public void setRuns(List<JobRun> runs) { 
     this.runs = runs; 
    } 

    public List<Container> getContainers() { 
     return containers; 
    } 

    public void setContainers(List<Container> containers) { 
     this.containers = containers; 
    } 
} 

Состояние:

@Entity 
@Table(name = "state") 
public class State implements Serializable { 
    @Id 
    @Column(name = "id") 
    @GeneratedValue(strategy = GenerationType.IDENTITY) 
    private Long id; 
    @Column(name="name") 
    private String name; 
    @OneToMany(fetch = FetchType.EAGER, cascade = CascadeType.ALL) 
    private List<TaskState> tasks; 

    public State() { 
     tasks = new ArrayList<>(); 
    } 

    public State(Long id, String name, List<TaskState> tasks) { 
     this.id = id; 
     this.name = name; 
     this.tasks = tasks; 
    } 

    public Long getId() { 
     return id; 
    } 

    public void setId(Long id) { 
     this.id = id; 
    } 

    public String getName() { 
     return name; 
    } 

    public void setName(String name) { 
     this.name = name; 
    } 

    public List<TaskState> getTasks() { 
     return tasks; 
    } 

    public void setTasks(List<TaskState> tasks) { 
     this.tasks = tasks; 
    } 
} 

TaskState:

@Entity 
@Table(name = "task_state") 
public class TaskState implements Serializable { 
    @Id 
    @Column(name = "id") 
    @GeneratedValue(strategy = GenerationType.IDENTITY) 
    private Long id; 
    @Column(name = "parent") 
    private Long parent; 
    @Column(name = "referenceid") 
    private Long referenceId; 
    @Column(name = "name") 
    private String name; 
    @Column(name = "status") 
    private TaskStatusEnum status; 
    @OneToMany(fetch = FetchType.EAGER, cascade = CascadeType.ALL) 
    private List<Step> steps; 
    @Column(name = "maxAttempts") 
    private Integer maxAttempts; 
    @ManyToOne 
    @JsonIgnore 
    private State state; 

    public TaskState() { 
     status = TaskStatusEnum.New; 
     steps = new ArrayList<>(); 
     maxAttempts = 5; 
    } 

    public TaskState(Long id, Long parent, Long referenceId, String name, TaskStatusEnum status, List<Step> steps, Integer maxAttempts) { 
     this(); 
     this.id = id; 
     this.parent = parent; 
     this.referenceId = referenceId; 
     this.name = name; 
     this.status = status; 
     this.steps = steps; 
     this.maxAttempts = maxAttempts; 
    } 

    public Long getId() { 
     return id; 
    } 

    public void setId(Long id) { 
     this.id = id; 
    } 

    public Long getParent() { 
     return parent; 
    } 

    public void setParent(Long parent) { 
     this.parent = parent; 
    } 

    public String getName() { 
     return name; 
    } 

    public void setName(String name) { 
     this.name = name; 
    } 

    public TaskStatusEnum getStatus() { 
     return status; 
    } 

    public void setStatus(TaskStatusEnum status) { 
     this.status = status; 
    } 

    public List<Step> getSteps() { 
     return steps; 
    } 

    public void setSteps(List<Step> steps) { 
     this.steps = steps; 
    } 

    public Long getReferenceId() { 
     return referenceId; 
    } 

    public void setReferenceId(Long referenceId) { 
     this.referenceId = referenceId; 
    } 

    public Integer getMaxAttempts() { 
     return maxAttempts; 
    } 

    public void setMaxAttempts(Integer maxAttempts) { 
     this.maxAttempts = maxAttempts; 
    } 

    public State getState() { 
     return state; 
    } 

    public void setState(State state) { 
     this.state = state; 
    } 
} 

Шаг:

@Entity 
@Table(name = "step") 
public class Step implements Serializable { 
    @Id 
    @Column(name = "id") 
    @GeneratedValue(strategy = GenerationType.IDENTITY) 
    private Long id; 
    @Column(name = "name") 
    private String name; 
    @Column(name = "groupname") 
    private String group; 
    @Column(name = "route") 
    private String route; 
    @Column(name = "celerytask") 
    private String celeryTask; 
    @Column(name = "postbackqueuename") 
    private String postBackQueueName; 
    @Column(name = "postbackerrorqueuename") 
    private String postBackErrorQueueName; 
    @Enumerated(EnumType.STRING) 
    @Column(name = "status") 
    private TaskStatusEnum status; 
    @ElementCollection 
    private List<String> arguements; 
    @Column(name="runningTaskId") 
    private Long runningTaskId; 
    @Column(name="result") 
    private String result; 
    @Column(name="attempt") 
    private Integer attempt; 
    @JsonIgnore 
    @ManyToOne 
    private TaskState task; 

    public Step() { 
     arguements = new ArrayList<>(); 
     status = TaskStatusEnum.New; 
     attempt = 0; 
    } 

    public Step(String name, String group, String route, String celeryTask, String postBackQueueName, String postBackErrorQueueName, TaskStatusEnum status, List<String> arguements, Long runningTaskId) { 
     this(); 
     this.name = name; 
     this.group = group; 
     this.route = route; 
     this.celeryTask = celeryTask; 
     this.postBackQueueName = postBackQueueName; 
     this.postBackErrorQueueName = postBackErrorQueueName; 
     this.status = status; 
     this.arguements = arguements; 
     this.runningTaskId = runningTaskId; 
    } 

    public String getName() { 
     return name; 
    } 

    public void setName(String name) { 
     this.name = name; 
    } 

    public String getGroup() { 
     return group; 
    } 

    public void setGroup(String group) { 
     this.group = group; 
    } 

    public String getRoute() { 
     return route; 
    } 

    public void setRoute(String route) { 
     this.route = route; 
    } 

    public String getCeleryTask() { 
     return celeryTask; 
    } 

    public void setCeleryTask(String celeryTask) { 
     this.celeryTask = celeryTask; 
    } 

    public String getPostBackQueueName() { 
     return postBackQueueName; 
    } 

    public void setPostBackQueueName(String postBackQueueName) { 
     this.postBackQueueName = postBackQueueName; 
    } 

    public String getPostBackErrorQueueName() { 
     return postBackErrorQueueName; 
    } 

    public void setPostBackErrorQueueName(String postBackErrorQueueName) { 
     this.postBackErrorQueueName = postBackErrorQueueName; 
    } 

    public List<String> getArguements() { 
     return arguements; 
    } 

    public void setArguements(List<String> arguements) { 
     this.arguements = arguements; 
    } 

    public TaskStatusEnum getStatus() { 
     return status; 
    } 

    public void setStatus(TaskStatusEnum status) { 
     this.status = status; 
    } 

    public String getResult() { 
     return result; 
    } 

    public void setResult(String result) { 
     this.result = result; 
    } 

    public Integer getAttempt() { 
     return attempt; 
    } 

    public void setAttempt(Integer attempt) { 
     this.attempt = attempt; 
    } 

    public Long getId() { 
     return id; 
    } 

    public void setId(Long id) { 
     this.id = id; 
    } 

    public Long getRunningTaskId() { 
     return runningTaskId; 
    } 

    public void setRunningTaskId(Long runningTaskId) { 
     this.runningTaskId = runningTaskId; 
    } 

    public TaskState getTask() { 
     return task; 
    } 

    public void setTask(TaskState task) { 
     this.task = task; 
    } 
} 

Answer 1

Это не каскадные из stateObj.setTasks(null);.

Вы нарушаете связь между государством и его задачами, поэтому, когда вы удаляете состояние, удаление не каскадирует ни на что.