Hibernate mapping internal class, Error “Could not determine type for: timeStamps”
I have Entity "Task" that needs to have an internal component called "timestamps" that holds values for when the task was submitted, started and completed.
@Entity
public class Task {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer Id;
private String Status;
private Timestamps timestamps;
// getters setters
}
Then I created the Timestamps class
public class Timestamps {
private Timestamp submitted;
private Timestamp started;
private Timestamp completed;
//getter and setters
}
How do I make this mapping so when I retrieve the information in JSON format I have something like this?
# task
{
"task": # ASCII string
"status": # one of "submitted", "started", "completed"
"timestamps": {
"submitted": # unix/epoch time
"started": # unix/epoch time or null if not started
"completed": # unix/epoch time or null if not completed
}
}
java json hibernate jpa
edited Dec 29 '18 at 21:19
daedsidog
1,3312827
asked Dec 29 '18 at 13:35
Thadeu Antonio Ferreira MeloThadeu Antonio Ferreira Melo
194213
add a comment |
I have Entity "Task" that needs to have an internal component called "timestamps" that holds values for when the task was submitted, started and completed.
@Entity
public class Task {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer Id;
private String Status;
private Timestamps timestamps;
// getters setters
}
Then I created the Timestamps class
public class Timestamps {
private Timestamp submitted;
private Timestamp started;
private Timestamp completed;
//getter and setters
}
How do I make this mapping so when I retrieve the information in JSON format I have something like this?
# task
{
"task": # ASCII string
"status": # one of "submitted", "started", "completed"
"timestamps": {
"submitted": # unix/epoch time
"started": # unix/epoch time or null if not started
"completed": # unix/epoch time or null if not completed
}
}
java json hibernate jpa
edited Dec 29 '18 at 21:19
daedsidog
1,3312827
asked Dec 29 '18 at 13:35
Thadeu Antonio Ferreira MeloThadeu Antonio Ferreira Melo
194213
@Spara It does not work: I got "No identifier specified for entity: com.tasks.Timestamps"
– Thadeu Antonio Ferreira Melo
Dec 29 '18 at 13:50
2
If you don't want to persist Timestamps in database you can use@Transient. If you want to persits Timestamps as a relation in DB you should make it as entity with an identifier then a@ManyToOnerelation with task enitity
– Spara
Dec 29 '18 at 13:53
add a comment |
I have Entity "Task" that needs to have an internal component called "timestamps" that holds values for when the task was submitted, started and completed.
@Entity
public class Task {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer Id;
private String Status;
private Timestamps timestamps;
// getters setters
}
Then I created the Timestamps class
public class Timestamps {
private Timestamp submitted;
private Timestamp started;
private Timestamp completed;
//getter and setters
}
How do I make this mapping so when I retrieve the information in JSON format I have something like this?
# task
{
"task": # ASCII string
"status": # one of "submitted", "started", "completed"
"timestamps": {
"submitted": # unix/epoch time
"started": # unix/epoch time or null if not started
"completed": # unix/epoch time or null if not completed
}
}
java json hibernate jpa
edited Dec 29 '18 at 21:19
daedsidog
1,3312827
asked Dec 29 '18 at 13:35
Thadeu Antonio Ferreira MeloThadeu Antonio Ferreira Melo
194213
I have Entity "Task" that needs to have an internal component called "timestamps" that holds values for when the task was submitted, started and completed.
@Entity
public class Task {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer Id;
private String Status;
private Timestamps timestamps;
// getters setters
}
Then I created the Timestamps class
public class Timestamps {
private Timestamp submitted;
private Timestamp started;
private Timestamp completed;
//getter and setters
}
How do I make this mapping so when I retrieve the information in JSON format I have something like this?
# task
{
"task": # ASCII string
"status": # one of "submitted", "started", "completed"
"timestamps": {
"submitted": # unix/epoch time
"started": # unix/epoch time or null if not started
"completed": # unix/epoch time or null if not completed
}
}
java json hibernate jpa
java json hibernate jpa
edited Dec 29 '18 at 21:19
daedsidog
1,3312827
asked Dec 29 '18 at 13:35
Thadeu Antonio Ferreira MeloThadeu Antonio Ferreira Melo
194213
edited Dec 29 '18 at 21:19
daedsidog
1,3312827
asked Dec 29 '18 at 13:35
Thadeu Antonio Ferreira MeloThadeu Antonio Ferreira Melo
194213
edited Dec 29 '18 at 21:19
daedsidog
1,3312827
edited Dec 29 '18 at 21:19
daedsidog
1,3312827
edited Dec 29 '18 at 21:19
daedsidog
1,3312827
1,3312827
asked Dec 29 '18 at 13:35
Thadeu Antonio Ferreira MeloThadeu Antonio Ferreira Melo
194213
asked Dec 29 '18 at 13:35
Thadeu Antonio Ferreira MeloThadeu Antonio Ferreira Melo
194213
asked Dec 29 '18 at 13:35
Thadeu Antonio Ferreira MeloThadeu Antonio Ferreira Melo
194213
194213
@Spara It does not work: I got "No identifier specified for entity: com.tasks.Timestamps"
– Thadeu Antonio Ferreira Melo
Dec 29 '18 at 13:50
2
If you don't want to persist Timestamps in database you can use@Transient. If you want to persits Timestamps as a relation in DB you should make it as entity with an identifier then a@ManyToOnerelation with task enitity
– Spara
Dec 29 '18 at 13:53
add a comment |
@Spara It does not work: I got "No identifier specified for entity: com.tasks.Timestamps"
– Thadeu Antonio Ferreira Melo
Dec 29 '18 at 13:50
2
If you don't want to persist Timestamps in database you can use@Transient. If you want to persits Timestamps as a relation in DB you should make it as entity with an identifier then a@ManyToOnerelation with task enitity
– Spara
Dec 29 '18 at 13:53
@Spara It does not work: I got "No identifier specified for entity: com.tasks.Timestamps"
– Thadeu Antonio Ferreira Melo
Dec 29 '18 at 13:50
@Spara It does not work: I got "No identifier specified for entity: com.tasks.Timestamps"
– Thadeu Antonio Ferreira Melo
Dec 29 '18 at 13:50
2
2
If you don't want to persist Timestamps in database you can use
@Transient. If you want to persits Timestamps as a relation in DB you should make it as entity with an identifier then a @ManyToOne relation with task enitity– Spara
Dec 29 '18 at 13:53
If you don't want to persist Timestamps in database you can use
@Transient. If you want to persits Timestamps as a relation in DB you should make it as entity with an identifier then a @ManyToOne relation with task enitity– Spara
Dec 29 '18 at 13:53
add a comment |
2 Answers
2
active
oldest
votes
You can put the @Embeddable annotation on Timestamps. Hibernate will map the fields as columns in the same table.
You might also need an @Embedded on the Timestamps field in Task (I cant remeber for certain if both sides need an annotation).
answered Dec 29 '18 at 14:07
John CamerinJohn Camerin
385111
add a comment |
If you don't want to persist Timestamps in DB and just use it In DTO This will helps you:
@Transient annotation is used to indicate that a field is not to be persisted in the database.
@Entity
public class Task {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer Id;
private String Status;
@Transient
private Timestamps timestamps;
// getters setters
}
If you want to persist Timestamps as a relation you should do something like this:
@Entity
public class Timestamps {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer Id;
private Timestamp submitted;
private Timestamp started;
private Timestamp completed;
//getter and setters
}
@Entity
public class Task {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer Id;
private String Status;
@ManyToOne
private Timestamps timestamps;
// getters setters
}
answered Dec 29 '18 at 13:48
SparaSpara
3,02211441
It kind of works. However, I would like to have the timestamps to persist in the database as columns of task. The annoying thing is that I need to make the JSON in that particular format.
– Thadeu Antonio Ferreira Melo
Dec 29 '18 at 13:53
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
You can put the @Embeddable annotation on Timestamps. Hibernate will map the fields as columns in the same table.
You might also need an @Embedded on the Timestamps field in Task (I cant remeber for certain if both sides need an annotation).
answered Dec 29 '18 at 14:07
John CamerinJohn Camerin
385111
add a comment |
You can put the @Embeddable annotation on Timestamps. Hibernate will map the fields as columns in the same table.
You might also need an @Embedded on the Timestamps field in Task (I cant remeber for certain if both sides need an annotation).
answered Dec 29 '18 at 14:07
John CamerinJohn Camerin
385111
add a comment |
You can put the @Embeddable annotation on Timestamps. Hibernate will map the fields as columns in the same table.
You might also need an @Embedded on the Timestamps field in Task (I cant remeber for certain if both sides need an annotation).
answered Dec 29 '18 at 14:07
John CamerinJohn Camerin
385111
You can put the @Embeddable annotation on Timestamps. Hibernate will map the fields as columns in the same table.
You might also need an @Embedded on the Timestamps field in Task (I cant remeber for certain if both sides need an annotation).
answered Dec 29 '18 at 14:07
John CamerinJohn Camerin
385111
answered Dec 29 '18 at 14:07
John CamerinJohn Camerin
385111
answered Dec 29 '18 at 14:07
John CamerinJohn Camerin
385111
answered Dec 29 '18 at 14:07
John CamerinJohn Camerin
385111
385111
add a comment |
add a comment |
If you don't want to persist Timestamps in DB and just use it In DTO This will helps you:
@Transient annotation is used to indicate that a field is not to be persisted in the database.
@Entity
public class Task {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer Id;
private String Status;
@Transient
private Timestamps timestamps;
// getters setters
}
If you want to persist Timestamps as a relation you should do something like this:
@Entity
public class Timestamps {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer Id;
private Timestamp submitted;
private Timestamp started;
private Timestamp completed;
//getter and setters
}
@Entity
public class Task {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer Id;
private String Status;
@ManyToOne
private Timestamps timestamps;
// getters setters
}
answered Dec 29 '18 at 13:48
SparaSpara
3,02211441
It kind of works. However, I would like to have the timestamps to persist in the database as columns of task. The annoying thing is that I need to make the JSON in that particular format.
– Thadeu Antonio Ferreira Melo
Dec 29 '18 at 13:53
add a comment |
If you don't want to persist Timestamps in DB and just use it In DTO This will helps you:
@Transient annotation is used to indicate that a field is not to be persisted in the database.
@Entity
public class Task {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer Id;
private String Status;
@Transient
private Timestamps timestamps;
// getters setters
}
If you want to persist Timestamps as a relation you should do something like this:
@Entity
public class Timestamps {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer Id;
private Timestamp submitted;
private Timestamp started;
private Timestamp completed;
//getter and setters
}
@Entity
public class Task {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer Id;
private String Status;
@ManyToOne
private Timestamps timestamps;
// getters setters
}
answered Dec 29 '18 at 13:48
SparaSpara
3,02211441
It kind of works. However, I would like to have the timestamps to persist in the database as columns of task. The annoying thing is that I need to make the JSON in that particular format.
– Thadeu Antonio Ferreira Melo
Dec 29 '18 at 13:53
add a comment |
If you don't want to persist Timestamps in DB and just use it In DTO This will helps you:
@Transient annotation is used to indicate that a field is not to be persisted in the database.
@Entity
public class Task {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer Id;
private String Status;
@Transient
private Timestamps timestamps;
// getters setters
}
If you want to persist Timestamps as a relation you should do something like this:
@Entity
public class Timestamps {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer Id;
private Timestamp submitted;
private Timestamp started;
private Timestamp completed;
//getter and setters
}
@Entity
public class Task {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer Id;
private String Status;
@ManyToOne
private Timestamps timestamps;
// getters setters
}
answered Dec 29 '18 at 13:48
SparaSpara
3,02211441
If you don't want to persist Timestamps in DB and just use it In DTO This will helps you:
@Transient annotation is used to indicate that a field is not to be persisted in the database.
@Entity
public class Task {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer Id;
private String Status;
@Transient
private Timestamps timestamps;
// getters setters
}
If you want to persist Timestamps as a relation you should do something like this:
@Entity
public class Timestamps {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer Id;
private Timestamp submitted;
private Timestamp started;
private Timestamp completed;
//getter and setters
}
@Entity
public class Task {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer Id;
private String Status;
@ManyToOne
private Timestamps timestamps;
// getters setters
}
answered Dec 29 '18 at 13:48
SparaSpara
3,02211441
edited Dec 29 '18 at 13:57
answered Dec 29 '18 at 13:48
SparaSpara
3,02211441
answered Dec 29 '18 at 13:48
SparaSpara
3,02211441
answered Dec 29 '18 at 13:48
SparaSpara
3,02211441
3,02211441
It kind of works. However, I would like to have the timestamps to persist in the database as columns of task. The annoying thing is that I need to make the JSON in that particular format.
– Thadeu Antonio Ferreira Melo
Dec 29 '18 at 13:53
add a comment |
It kind of works. However, I would like to have the timestamps to persist in the database as columns of task. The annoying thing is that I need to make the JSON in that particular format.
– Thadeu Antonio Ferreira Melo
Dec 29 '18 at 13:53
It kind of works. However, I would like to have the timestamps to persist in the database as columns of task. The annoying thing is that I need to make the JSON in that particular format.
– Thadeu Antonio Ferreira Melo
Dec 29 '18 at 13:53
It kind of works. However, I would like to have the timestamps to persist in the database as columns of task. The annoying thing is that I need to make the JSON in that particular format.
– Thadeu Antonio Ferreira Melo
Dec 29 '18 at 13:53
add a comment |
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@Spara It does not work: I got "No identifier specified for entity: com.tasks.Timestamps"
– Thadeu Antonio Ferreira Melo
Dec 29 '18 at 13:50
2
If you don't want to persist Timestamps in database you can use
@Transient. If you want to persits Timestamps as a relation in DB you should make it as entity with an identifier then a@ManyToOnerelation with task enitity– Spara
Dec 29 '18 at 13:53