Package org.hibernate.annotations

Annotation Interface CurrentTimestamp

@Retention(RUNTIME)
@Target({FIELD,METHOD,ANNOTATION_TYPE})
public @interface CurrentTimestamp

Specifies that the annotated field of property is a generated timestamp, and also specifies the timing of the timestamp generation, and whether it is generated in Java or by the database:

• source = VM indicates that the virtual machine current instant is used, and
• source = DB indicates that the database current_timestamp function should be used.

By default, the timestamp is generated by the database, which might require an extra round trip to the database to fetch the generated value, depending on the capabilities of the database and driver.

This annotation may be used in combination with the JPA-defined Version annotation.

The annotated property may be of any one of the following types: Date, Calendar, Date, Time, Timestamp, Instant, LocalDate, LocalDateTime, LocalTime, MonthDay, OffsetDateTime, OffsetTime, Year, YearMonth, or ZonedDateTime.

A field annotated @CurrentTimestamp may not be directly set by the application program.

Since:

6.0

See Also:

• UpdateTimestamp
• CreationTimestamp
• CurrentTimestampGeneration

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element	Description
EventType[]	event	Determines when the timestamp is generated.
SourceType	source	Specifies how the timestamp is generated.

Element Details

event

EventType[] event

Determines when the timestamp is generated. But default, it is updated when any SQL insert or update statement is executed. If it should be generated just once, on the initial SQL insert, explicitly specify event = INSERT.

Default:

{INSERT, UPDATE, FORCE_INCREMENT}

source

SourceType source

Specifies how the timestamp is generated. By default, it is generated by the database. Depending on the capabilities of the database and JDBC driver, this might require that the value be fetched using a subsequent select statement. Setting source = VM guarantees that this additional select never occurs.

Default:

DB