Sequence Generator not available to child class (entity) in certain cases
0
I've successfully defined a sequence generator via annotations in an inheritance relationship roughly like so:
@MappedSuperclass
public class DomainObject {
@Id
@Column( columnDefinition = "serial" )
@GeneratedValue( generator = "id_sequence", strategy = GenerationType.IDENTITY )
private long id = 0;
}
@Entity
@Table( name = "user" )
@SequenceGenerator( name = "id_sequence", sequenceName = "user_id_seq" )
public class User extends DomainObject {
}
In this example, the User class's sequence generator finds id_sequence from the Generated value annotation in DomainObject.
However, if I make DomainObject an abstract class and place it in another dependency (everything else about it remains the same), I get an exception:
org.hibernate.AnnotationException: Unknown Id.generator: id_sequence
In the changed version, the DomainObject dependency is in the @ComponentScan path, so I'm unsure as to why this isn't working. Any thoughts?
java hibernate java-annotations
asked Jan 3 at 19:27
Mark NenadovMark Nenadov
3,68721826
add a comment |
0
I've successfully defined a sequence generator via annotations in an inheritance relationship roughly like so:
@MappedSuperclass
public class DomainObject {
@Id
@Column( columnDefinition = "serial" )
@GeneratedValue( generator = "id_sequence", strategy = GenerationType.IDENTITY )
private long id = 0;
}
@Entity
@Table( name = "user" )
@SequenceGenerator( name = "id_sequence", sequenceName = "user_id_seq" )
public class User extends DomainObject {
}
In this example, the User class's sequence generator finds id_sequence from the Generated value annotation in DomainObject.
However, if I make DomainObject an abstract class and place it in another dependency (everything else about it remains the same), I get an exception:
org.hibernate.AnnotationException: Unknown Id.generator: id_sequence
In the changed version, the DomainObject dependency is in the @ComponentScan path, so I'm unsure as to why this isn't working. Any thoughts?
java hibernate java-annotations
asked Jan 3 at 19:27
Mark NenadovMark Nenadov
3,68721826
add a comment |
0
0
0
I've successfully defined a sequence generator via annotations in an inheritance relationship roughly like so:
@MappedSuperclass
public class DomainObject {
@Id
@Column( columnDefinition = "serial" )
@GeneratedValue( generator = "id_sequence", strategy = GenerationType.IDENTITY )
private long id = 0;
}
@Entity
@Table( name = "user" )
@SequenceGenerator( name = "id_sequence", sequenceName = "user_id_seq" )
public class User extends DomainObject {
}
In this example, the User class's sequence generator finds id_sequence from the Generated value annotation in DomainObject.
However, if I make DomainObject an abstract class and place it in another dependency (everything else about it remains the same), I get an exception:
org.hibernate.AnnotationException: Unknown Id.generator: id_sequence
In the changed version, the DomainObject dependency is in the @ComponentScan path, so I'm unsure as to why this isn't working. Any thoughts?
java hibernate java-annotations
asked Jan 3 at 19:27
Mark NenadovMark Nenadov
3,68721826
I've successfully defined a sequence generator via annotations in an inheritance relationship roughly like so:
@MappedSuperclass
public class DomainObject {
@Id
@Column( columnDefinition = "serial" )
@GeneratedValue( generator = "id_sequence", strategy = GenerationType.IDENTITY )
private long id = 0;
}
@Entity
@Table( name = "user" )
@SequenceGenerator( name = "id_sequence", sequenceName = "user_id_seq" )
public class User extends DomainObject {
}
In this example, the User class's sequence generator finds id_sequence from the Generated value annotation in DomainObject.
However, if I make DomainObject an abstract class and place it in another dependency (everything else about it remains the same), I get an exception:
org.hibernate.AnnotationException: Unknown Id.generator: id_sequence
In the changed version, the DomainObject dependency is in the @ComponentScan path, so I'm unsure as to why this isn't working. Any thoughts?
java hibernate java-annotations
java hibernate java-annotations
asked Jan 3 at 19:27
Mark NenadovMark Nenadov
3,68721826
asked Jan 3 at 19:27
Mark NenadovMark Nenadov
3,68721826
asked Jan 3 at 19:27
Mark NenadovMark Nenadov
3,68721826
asked Jan 3 at 19:27
Mark NenadovMark Nenadov
3,68721826
asked Jan 3 at 19:27
Mark NenadovMark Nenadov
3,68721826
3,68721826
add a comment |
add a comment |
1 Answer
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Why don't you do this:
@MappedSuperclass
public abstract class DomainObject {
@Id
@Column( columnDefinition = "serial" )
@SequenceGenerator( name = "id_sequence", sequenceName = "user_id_seq" )
@GeneratedValue( generator = "id_sequence", strategy = GenerationType.IDENTITY )
private long id = 0;
}
@Entity
@Table( name = "user" )
public class User extends DomainObject {
}
I have done this configuration in other projects with success ... about not finding the annotated classes, be sure that DomainObject is in the class path and User Entity is really detected by spring...
answered Jan 4 at 1:01
Carlitos WayCarlitos Way
2,1741322
Because I don't want to use the same sequence for all the children of DomainObject. "User" is just one example of that. So essentially, I want to put as much as I can in DomainObject and have sequenceName = "user_id_seq" defined in the child.
– Mark Nenadov
Jan 4 at 16:24
I believe is not possible ... for that you need to move @Id declaration (including its associated attribute, i.e. private long id;) to every child class ... then, you can define the sequence that you want
– Carlitos Way
Jan 4 at 20:18
That is what I originally assumed. However....the question that I'm mulling over is this: why, then, does the sequence stuff WORK in the first code snippet I gave (where it is in a concrete parent class in the same package) and NOT WORK not in the second case (where I make the parent class abstract and have it reside in a seperate dependency)? It seems the SequenceGenerator can indeed be in the child and the generatedValue in the parent as long as the parent is not abstract and in the same package.
– Mark Nenadov
Jan 5 at 4:10
In the case that does work, DomainObject and User shared the same package space, even each class is declared in different artefacts (dependency)?
– Carlitos Way
Jan 6 at 13:13
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
Why don't you do this:
@MappedSuperclass
public abstract class DomainObject {
@Id
@Column( columnDefinition = "serial" )
@SequenceGenerator( name = "id_sequence", sequenceName = "user_id_seq" )
@GeneratedValue( generator = "id_sequence", strategy = GenerationType.IDENTITY )
private long id = 0;
}
@Entity
@Table( name = "user" )
public class User extends DomainObject {
}
I have done this configuration in other projects with success ... about not finding the annotated classes, be sure that DomainObject is in the class path and User Entity is really detected by spring...
answered Jan 4 at 1:01
Carlitos WayCarlitos Way
2,1741322
Because I don't want to use the same sequence for all the children of DomainObject. "User" is just one example of that. So essentially, I want to put as much as I can in DomainObject and have sequenceName = "user_id_seq" defined in the child.
– Mark Nenadov
Jan 4 at 16:24
I believe is not possible ... for that you need to move @Id declaration (including its associated attribute, i.e. private long id;) to every child class ... then, you can define the sequence that you want
– Carlitos Way
Jan 4 at 20:18
That is what I originally assumed. However....the question that I'm mulling over is this: why, then, does the sequence stuff WORK in the first code snippet I gave (where it is in a concrete parent class in the same package) and NOT WORK not in the second case (where I make the parent class abstract and have it reside in a seperate dependency)? It seems the SequenceGenerator can indeed be in the child and the generatedValue in the parent as long as the parent is not abstract and in the same package.
– Mark Nenadov
Jan 5 at 4:10
In the case that does work, DomainObject and User shared the same package space, even each class is declared in different artefacts (dependency)?
– Carlitos Way
Jan 6 at 13:13
add a comment |
0
Why don't you do this:
@MappedSuperclass
public abstract class DomainObject {
@Id
@Column( columnDefinition = "serial" )
@SequenceGenerator( name = "id_sequence", sequenceName = "user_id_seq" )
@GeneratedValue( generator = "id_sequence", strategy = GenerationType.IDENTITY )
private long id = 0;
}
@Entity
@Table( name = "user" )
public class User extends DomainObject {
}
I have done this configuration in other projects with success ... about not finding the annotated classes, be sure that DomainObject is in the class path and User Entity is really detected by spring...
answered Jan 4 at 1:01
Carlitos WayCarlitos Way
2,1741322
Because I don't want to use the same sequence for all the children of DomainObject. "User" is just one example of that. So essentially, I want to put as much as I can in DomainObject and have sequenceName = "user_id_seq" defined in the child.
– Mark Nenadov
Jan 4 at 16:24
I believe is not possible ... for that you need to move @Id declaration (including its associated attribute, i.e. private long id;) to every child class ... then, you can define the sequence that you want
– Carlitos Way
Jan 4 at 20:18
That is what I originally assumed. However....the question that I'm mulling over is this: why, then, does the sequence stuff WORK in the first code snippet I gave (where it is in a concrete parent class in the same package) and NOT WORK not in the second case (where I make the parent class abstract and have it reside in a seperate dependency)? It seems the SequenceGenerator can indeed be in the child and the generatedValue in the parent as long as the parent is not abstract and in the same package.
– Mark Nenadov
Jan 5 at 4:10
In the case that does work, DomainObject and User shared the same package space, even each class is declared in different artefacts (dependency)?
– Carlitos Way
Jan 6 at 13:13
add a comment |
0
0
0
Why don't you do this:
@MappedSuperclass
public abstract class DomainObject {
@Id
@Column( columnDefinition = "serial" )
@SequenceGenerator( name = "id_sequence", sequenceName = "user_id_seq" )
@GeneratedValue( generator = "id_sequence", strategy = GenerationType.IDENTITY )
private long id = 0;
}
@Entity
@Table( name = "user" )
public class User extends DomainObject {
}
I have done this configuration in other projects with success ... about not finding the annotated classes, be sure that DomainObject is in the class path and User Entity is really detected by spring...
answered Jan 4 at 1:01
Carlitos WayCarlitos Way
2,1741322
Why don't you do this:
@MappedSuperclass
public abstract class DomainObject {
@Id
@Column( columnDefinition = "serial" )
@SequenceGenerator( name = "id_sequence", sequenceName = "user_id_seq" )
@GeneratedValue( generator = "id_sequence", strategy = GenerationType.IDENTITY )
private long id = 0;
}
@Entity
@Table( name = "user" )
public class User extends DomainObject {
}
I have done this configuration in other projects with success ... about not finding the annotated classes, be sure that DomainObject is in the class path and User Entity is really detected by spring...
answered Jan 4 at 1:01
Carlitos WayCarlitos Way
2,1741322
answered Jan 4 at 1:01
Carlitos WayCarlitos Way
2,1741322
answered Jan 4 at 1:01
Carlitos WayCarlitos Way
2,1741322
answered Jan 4 at 1:01
Carlitos WayCarlitos Way
2,1741322
2,1741322
Because I don't want to use the same sequence for all the children of DomainObject. "User" is just one example of that. So essentially, I want to put as much as I can in DomainObject and have sequenceName = "user_id_seq" defined in the child.
– Mark Nenadov
Jan 4 at 16:24
I believe is not possible ... for that you need to move @Id declaration (including its associated attribute, i.e. private long id;) to every child class ... then, you can define the sequence that you want
– Carlitos Way
Jan 4 at 20:18
That is what I originally assumed. However....the question that I'm mulling over is this: why, then, does the sequence stuff WORK in the first code snippet I gave (where it is in a concrete parent class in the same package) and NOT WORK not in the second case (where I make the parent class abstract and have it reside in a seperate dependency)? It seems the SequenceGenerator can indeed be in the child and the generatedValue in the parent as long as the parent is not abstract and in the same package.
– Mark Nenadov
Jan 5 at 4:10
In the case that does work, DomainObject and User shared the same package space, even each class is declared in different artefacts (dependency)?
– Carlitos Way
Jan 6 at 13:13
add a comment |
Because I don't want to use the same sequence for all the children of DomainObject. "User" is just one example of that. So essentially, I want to put as much as I can in DomainObject and have sequenceName = "user_id_seq" defined in the child.
– Mark Nenadov
Jan 4 at 16:24
I believe is not possible ... for that you need to move @Id declaration (including its associated attribute, i.e. private long id;) to every child class ... then, you can define the sequence that you want
– Carlitos Way
Jan 4 at 20:18
That is what I originally assumed. However....the question that I'm mulling over is this: why, then, does the sequence stuff WORK in the first code snippet I gave (where it is in a concrete parent class in the same package) and NOT WORK not in the second case (where I make the parent class abstract and have it reside in a seperate dependency)? It seems the SequenceGenerator can indeed be in the child and the generatedValue in the parent as long as the parent is not abstract and in the same package.
– Mark Nenadov
Jan 5 at 4:10
In the case that does work, DomainObject and User shared the same package space, even each class is declared in different artefacts (dependency)?
– Carlitos Way
Jan 6 at 13:13
Because I don't want to use the same sequence for all the children of DomainObject. "User" is just one example of that. So essentially, I want to put as much as I can in DomainObject and have sequenceName = "user_id_seq" defined in the child.
– Mark Nenadov
Jan 4 at 16:24
Because I don't want to use the same sequence for all the children of DomainObject. "User" is just one example of that. So essentially, I want to put as much as I can in DomainObject and have sequenceName = "user_id_seq" defined in the child.
– Mark Nenadov
Jan 4 at 16:24
I believe is not possible ... for that you need to move @Id declaration (including its associated attribute, i.e. private long id;) to every child class ... then, you can define the sequence that you want
– Carlitos Way
Jan 4 at 20:18
I believe is not possible ... for that you need to move @Id declaration (including its associated attribute, i.e. private long id;) to every child class ... then, you can define the sequence that you want
– Carlitos Way
Jan 4 at 20:18
That is what I originally assumed. However....the question that I'm mulling over is this: why, then, does the sequence stuff WORK in the first code snippet I gave (where it is in a concrete parent class in the same package) and NOT WORK not in the second case (where I make the parent class abstract and have it reside in a seperate dependency)? It seems the SequenceGenerator can indeed be in the child and the generatedValue in the parent as long as the parent is not abstract and in the same package.
– Mark Nenadov
Jan 5 at 4:10
That is what I originally assumed. However....the question that I'm mulling over is this: why, then, does the sequence stuff WORK in the first code snippet I gave (where it is in a concrete parent class in the same package) and NOT WORK not in the second case (where I make the parent class abstract and have it reside in a seperate dependency)? It seems the SequenceGenerator can indeed be in the child and the generatedValue in the parent as long as the parent is not abstract and in the same package.
– Mark Nenadov
Jan 5 at 4:10
In the case that does work, DomainObject and User shared the same package space, even each class is declared in different artefacts (dependency)?
– Carlitos Way
Jan 6 at 13:13
In the case that does work, DomainObject and User shared the same package space, even each class is declared in different artefacts (dependency)?
– Carlitos Way
Jan 6 at 13:13
add a comment |
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