javax.persistence.FieldResult Maven / Gradle / Ivy
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package javax.persistence;
import java.lang.annotation.Target;
import java.lang.annotation.Retention;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
/**
* Is used to map the columns specified in the SELECT list
* of the query to the properties or fields of the 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
*/
@Target({})
@Retention(RUNTIME)
public @interface FieldResult {
/** Name of the persistent field or property of the class. */
String name();
/**
* Name of the column in the SELECT clause - i.e., column
* aliases, if applicable.
*/
String column();
}