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EclipseLink/Examples/JPA/PessimisticLocking
< EclipseLink | Examples | JPA
EclipseLink allows users the option of using pessimistic locking on their queries. This is done through the use of a query hint.
Via Annotations
@Entity
@Table(name="JPA_EMPLOYEE")
@NamedQuery(
name="findEmployeeByPK",
query="SELECT OBJECT(employee) FROM Employee employee WHERE employee.id = :id"),
hints={
@QueryHint(
name=EclipseLinkQueryHints.PESSIMISTIC_LOCK,
value=EclipseLinkQueryHints.PESSIMISTIC_LOCK)
}
)
public class Employee implements Serializable {
...
}