The column(s) used for a property mapping can be defined using the @Column annotation. Use it to override default values (see the EJB3 specification for more information on the defaults). You can use this annotation at the property level for properties that are:
-
not annotated at all
-
annotated with
@Basic -
annotated with
@Version -
annotated with
@Lob -
annotated with
@Temporal -
annotated with
@org.hibernate.annotations.CollectionOfElements(for Hibernate only)
@Entity
public class Flight implements Serializable {
...
@Column(updatable = false, name = "flight_name", nullable = false, length=50)
public String getName() { ... }
The name property is mapped to the flight_name column, which is not nullable, has a length of 50 and is not updatable (making the property immutable).
This annotation can be applied to regular properties as well as @Id or @Version properties.
@Column(
name="columnName";
boolean unique() default false;
boolean nullable() default true;
boolean insertable() default true;
boolean updatable() default true;
String columnDefinition() default "";
String table() default "";
int length() default 255;
int precision() default 0; // decimal precision
int scale() default 0; // decimal scale
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|