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Difference between revisions of "EclipseLink/UserGuide/JPA/Basic JPA Development/Mapping/Basic Mappings/Temporal"

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This example shows how to use this annotation to specify that EclipseLink persistence provider should persist <tt>java.util.Date</tt> field <tt>startDate</tt> as a <tt>DATE</tt> (<tt>java.sql.Date</tt>) database type.
 
  
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The following example shows how to use this annotation to specify that EclipseLink persistence provider should persist <tt>java.util.Date</tt> field <tt>startDate</tt> as a <tt>DATE</tt> (<tt>java.sql.Date</tt>) database type.
  
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======'' Example: @Temporal Annotation''======
''''' Usage of the @Temporal Annotation'''''
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Revision as of 12:40, 29 March 2011

EclipseLink JPA

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@Temporal

Use the @Temporal annotation to specify the database type that EclipseLink persistence provider should persist for persistent fields or properties of type java.util.Date and java.util.Calendar only.

You can use this annotation with the @Basic annotation.

@Temporal Attributes:
Attribute Description Default Required?
value Set this attribute to the TemporalType that corresponds to database type you want EclipseLink persistence provider to use:
  • DATE – equivalent of java.sql.Date
  • TIME – equivalent of java.time.Date
  • TIMESTAMP – equivalent of java.sql.Timestamp
Yes


The following example shows how to use this annotation to specify that EclipseLink persistence provider should persist java.util.Date field startDate as a DATE (java.sql.Date) database type.

Example: @Temporal Annotation
 @Entity
 public class Employee implements Serializable{
     ...
     @Temporal(DATE)
     protected java.util.Date startDate;
     ...
 }
Elug javaspec icon.gif

For more information, see Section 9.1.20 "Temporal Annotation" in the JPA Specification.


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