Use a Version Mapping to specify the field used for optimistic locking. If the entity is associated with multiple tables, you should use a version mapping only with the primary table. You should have only a single version mapping per persistent entity. Version mappings may be used only with the following attribute types:
int
Integer
short, Short
long, Long
Timestamp
To create a version mapping:
In the JPA Structure view, select the field to map.
Right-click the field and then select Map As > Version. The JPA Details view (for attributes) displays the properties for the selected.
Use this table to complete the remaining fields in the JPA Details view.
Property | Description | Default |
---|---|---|
Mapped Entity Hyperlink | Defines the mapping as Version. This corresponds to the @Version annotation. |
Version |
Column | The database column mapped to the entity attribute. See "Column" for details. | By default, the Column is assumed to be named identically to the attribute and always included in the INSERT and UPDATE statements. |
Table | Name of the database table. This must be the primary table associated with the attribute's entity. | |
Temporal | Specifies the type of data. See "Temporal" for details.
|
Eclipse adds the following annotations to the field:
@Version @Column(table="<COLUMN_TABLE>", name="<COLUMN_NAME>")