Store Custom Object Attributes as Columns in Hibernate

Question

how can we generate table using custom object attribute as table column

private class CustomObject {   
    String attr1;
    String attr2;
}

@Entity
@Table(name = "result")
public class Result {
   @Column
   private  String id;

   @Column
   public CustomObject cobject;
}

RESULT table generate as follow

id	attr1	attr2

You're looking for @Embedded.

chrylis -cautiouslyoptimistic-
– chrylis -cautiouslyoptimistic-

2021-09-21 06:50:28 +00:00
Commented Sep 21, 2021 at 6:50 — chrylis -cautiouslyoptimistic-
– chrylis -cautiouslyoptimistic-, Commented Sep 21, 2021 at 6:50
thank you @chrylis-cautiouslyoptimistic-

try.aaam
– try.aaam

2021-09-22 15:18:46 +00:00
Commented Sep 22, 2021 at 15:18 — try.aaam
– try.aaam, Commented Sep 22, 2021 at 15:18

dariosicily · Accepted Answer · 2021-09-21 10:06:30Z

1

From Hibernate_User_Guide documentation:

PA defines two terms for working with an embeddable type: @Embeddable and @Embedded. @Embeddable is used to describe the mapping type itself (e.g. Publisher).@Embedded is for referencing a given embeddable type (e.g. book.publisher).

So you can annotate your classes like below:

@Embeddable
private class CustomObject {   
    String attr1;
    String attr2;
}

@Entity
@Table(name = "result")
public class Result {
   @Column
   private  String id;

   @Embedded
   public CustomObject cobject;
}

answered Sep 21, 2021 at 10:06

dariosicily

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2 Comments

try.aaam Over a year ago

thank you @dariosicily

dariosicily Over a year ago

@try_aaam You are welcome.

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