Package jakarta.persistence
Annotation Type ColumnResult
-
@Target({}) @Retention(RUNTIME) public @interface ColumnResult
Used in conjunction with theSqlResultSetMapping
annotation orConstructorResult
annotation to map a column of the SELECT list of a SQL query.The
name
element references the name of a column in the SELECT list — i.e., column alias, if applicable. Scalar result types can be included in the query result by specifying this annotation in the metadata.Example: Query q = em.createNativeQuery( "SELECT o.id AS order_id, " + "o.quantity AS order_quantity, " + "o.item AS order_item, " + "i.name AS item_name, " + "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")})}, columns={ @ColumnResult(name="item_name")} )
- Since:
- 1.0
- See Also:
SqlResultSetMapping
-
-
Element Detail
-
name
String name
(Required) The name of a column in the SELECT clause of a SQL query
-
-
-
type
Class type
(Optional) The Java type to which the column type is to be mapped. If thetype
element is not specified, the default JDBC type mapping for the column will be used.- Since:
- 2.1
- Default:
- void.class
-
-