96 words

javax.persistence.MapKeyTemporal - JPA annotation

javax.persistence
Annotation MapKeyTemporal

Target:
Fields (including property get methods)
This annotation must be specified for persistent map keys of type java.util.Date and java.util.Calendar. It may only be specified for map keys of these types.

The MapKeyTemporal annotation can be applied to an element collection or relationship of type java.util.Map in conjunction with the ElementCollection, OneToMany, or ManyToMany annotation.

Example:

 
     @OneToMany
     @MapKeyTemporal(DATE)
     protected java.util.Map<java.util.Date, Employee> employees;

Since:
JPA 2.0
(Required) The type used in mapping java.util.Date or java.util.Calendar.
(Required) The type used in mapping java.util.Date or java.util.Calendar.
Since:
JPA 2.0

This documentation page is derived (with some adjustments) from the open source JPA 2 RI (EclipseLink)
and is available under the terms of the Eclipse Public License, v. 1.0 and Eclipse Distribution License, v. 1.0.
Object Relational Mapping (ORM) JPA 2 providers include Hibernate, EclipseLink, TopLink, OpenJPA and DataNucleus.
Object DB is not an ORM JPA implementation but an Object Database for Java with built in JPA 2 support.