You can write EntityListeners based on your requirements. Several example scripts follow.
@Entity @EntityListeners(EmployeeListener.class, EmployeeListener2.class) public class Employee { @PrePersist public void checkEmployeeID() { .... } } public class EmployeeListener { @PrePersist public void onEmployeePrePersist(Employee e) { .... } } public class PersonListener { @PrePersist public void onPersonPrePersist(Object person) { .... } } public class EmployeeListener2 { @PrePersist public void onEmployeePrePersist2(Object employee) { .... } }
<entity class-name="com.ibm.websphere.objectgrid.sample.Employee" name="Employee" access="FIELD"> <attributes> <id name="id" /> <basic name="value" /> </attributes> <entity-listeners> <entity-listener class-name="com.ibm.websphere.objectgrid.sample.EmployeeListener"> <pre-persist method-name="onListenerPrePersist" /> <post-persist method-name="onListenerPostPersist" /> </entity-listener> </entity-listeners> <pre-persist method-name="checkEmployeeID" /> </entity>The entity Employee is configured with a com.ibm.websphere.objectgrid.sample.EmployeeListener entity listener class , which has two life-cycle callback methods defined. The onListenerPrePersist method is for the PrePersist event, and the onListenerPostPersist method is for the PostPersist event. Also, the checkEmployeeID method in the Employee class is configured to listen for the PrePersist event.