http://hibernate.org: Hibernate's core ORM functionality (Hibernate.org) 
/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
 * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
 */
package org.hibernate.annotations;

import org.hibernate.tuple.CreationTimestampGeneration;

import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;


Marks a property as the creation timestamp of the containing entity. The property value will be set to the current
VM date exactly once when saving the owning entity for the first time.


Supported property types:



Author:Gunnar Morling
/**
 * Marks a property as the creation timestamp of the containing entity. The property value will be set to the current
 * VM date exactly once when saving the owning entity for the first time.
 * <p>
 * Supported property types:
 * <ul>
 * <li>{@link java.util.Date}</li>
 * <li>{@link java.util.Calendar}</li>
 * <li>{@link java.sql.Date}</li>
 * <li>{@link java.sql.Time}</li>
 * <li>{@link java.sql.Timestamp}</li>
 * <li>{@link java.time.Instant}</li>
 * <li>{@link java.time.LocalDate}</li>
 * <li>{@link java.time.LocalDateTime}</li>
 * <li>{@link java.time.LocalTime}</li>
 * <li>{@link java.time.MonthDay}</li>
 * <li>{@link java.time.OffsetDateTime}</li>
 * <li>{@link java.time.OffsetTime}</li>
 * <li>{@link java.time.Year}</li>
 * <li>{@link java.time.YearMonth}</li>
 * <li>{@link java.time.ZonedDateTime}</li>
 * </ul>
 *
 * @author Gunnar Morling
 */
@ValueGenerationType(generatedBy = CreationTimestampGeneration.class)
@Retention(RetentionPolicy.RUNTIME)
public @interface CreationTimestamp {
}