Hibernate embeddable list

Question

I have two ready tables:

Table "One"
id numeric (PK);
name varchar(100); 

Table "Two"
property1 varchar(100);
one_id long;

I want map two classes for it tables:

class One 
{
long id;
String name;
}

Two
{
  One parent;
  String property1;
}

If I add List<Two> properties into One class, what annotations I must add to it? Class 'Two' marks as Embeddable. Modification of tables is deprecated.

you want to add full table Two in table One. Please clarify that — Gautam Savaliya, Sep 16 '14 at 10:31
I want save some entities without primary key via hibernate. At this structure (if its possible) - I want save "One" with all elements of collection "Two". — mgurov, Sep 16 '14 at 10:36
>> Class 'Two' marks as Embeddable. -- means? Because PK not available - single way to use it- marks as @Embeddable. Or I incorrect understand it? — mgurov, Sep 16 '14 at 10:39

score 1 · Accepted Answer · answered Sep 16 '14 at 10:44

1

You don't need a class Two at all. What you need in class One is

@ElementCollection
@Column(name = "property1")
@JoinColumn(name = "one_id")
private Set<String> properties;

answered Sep 16 '14 at 10:44

JB Nizet

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class Two - is a small example of production version. Real class contains more than one field – mgurov Sep 16 '14 at 10:45
Then annotate it with `@Embeddable`, use a `Set` instead of a `Set`, and remove the `@Column` annotation. Your Two class may not have a field of type `One`. – JB Nizet Sep 16 '14 at 10:46
Sql output show incorrect column name during insert records into "Two" table: insert into Two (Two_id, property1) values (?, ?) – mgurov Sep 16 '14 at 11:13
I solve probjem with adding @CollectionTable(name="Two", joinColumns = @JoinColumn(name = "one_id")) and remove field parent from Two – mgurov Sep 16 '14 at 11:35

Hibernate embeddable list

1 Answers1