Как удалить дочерние записи с помощью Spring Data JPA ⇐ JAVA

[Anonymous]

У меня возникает много проблем при попытке удалить дочерние записи с помощью JPA. Рассмотрим сопоставления ниже. Я пытаюсь удалить все данные состояния в таблице jobs. Когда он будет удален, все удаления будут каскадированы по цепочке. Вот цепочка:
Job -> State -> TaskState -> Step

Когда я пытаюсь удалить состояние из таблицы job, ему присваивается значение NULL. Однако он не каскадируется по цепочке. Как мне этого добиться?
Вот как я удаляю данные:
@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);
}

Вакансии:
@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 tasks;
@Column(name = "status")
@Enumerated(EnumType.STRING)
private JobStatusEnum status;
@ManyToMany
private List devices;
@OneToMany
private List runs;
@OneToMany
private List 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 tasks, JobStatusEnum status, List devices, List runs, List 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 getTasks() {
return tasks;
}

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

public JobStatusEnum getStatus() {
return status;
}

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

public List getDevices() {
return devices;
}

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

public List getRuns() {
return runs;
}

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

public List getContainers() {
return containers;
}

public void setContainers(List 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 tasks;

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

public State(Long id, String name, List 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 getTasks() {
return tasks;
}

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

Состояние задачи:
@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 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 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 getSteps() {
return steps;
}

public void setSteps(List 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 arguments;
@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() {
arguments = new ArrayList();
status = TaskStatusEnum.New;
attempt = 0;
}

public Step(String name, String group, String route, String celeryTask, String postBackQueueName, String postBackErrorQueueName, TaskStatusEnum status, List arguments, 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.arguments = arguments;
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 getArguments() {
return arguments;
}

public void setArguments(List arguments) {
this.arguments = arguments;
}

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;
}
}


Подробнее здесь: https://stackoverflow.com/questions/420 ... g-data-jpa