javax.persistence

Annotation Type FieldResult

@Target(value={})
 @Retention(value=RUNTIME)
public @interface FieldResult

Used in conjunction with the EntityResult annotation to map columns specified in the SELECT list of a SQL query to the properties or fields of an entity class.

 Example:
   Query q = em.createNativeQuery(
       "SELECT o.id AS order_id, " +
           "o.quantity AS order_quantity, " +
           "o.item AS order_item, " +
         "FROM Order o, Item i " +
         "WHERE (order_quantity > 25) AND (order_item = i.id)",
       "OrderResults");

   @SqlResultSetMapping(name="OrderResults",
       entities={
           @EntityResult(entityClass=com.acme.Order.class, fields={
               @FieldResult(name="id", column="order_id"),
               @FieldResult(name="quantity", column="order_quantity"),
               @FieldResult(name="item", column="order_item")})
       })
 

Since:

Java Persistence 1.0

See Also:

EntityResult, SqlResultSetMapping

Required Element Summary

Required Elements

Modifier and Type	Required Element and Description
String	column Name of the column in the SELECT clause - i.e., column aliases, if applicable.
String	name Name of the persistent field or property of the class.

Element Detail

name

public abstract String name

Name of the persistent field or property of the class.

column

public abstract String column

Name of the column in the SELECT clause - i.e., column aliases, if applicable.