Jakarta Persistence (JPA) Annotation Type

jakarta.persistence.FieldResult

Implemented Interfaces:
Annotation
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")
            })
    })

See Also:
Since:
Jakarta Persistence (JPA) 1.0

Annotation Elements

String name
Name of the persistent field or property of the class.
Since:
Jakarta Persistence (JPA) 1.0
String column
Name of the column in the SELECT clause - i.e., column aliases, if applicable.
Since:
Jakarta Persistence (JPA) 1.0

Additional JDK methods inherited from java.lang.annotation.Annotation

java.lang.annotation.Annotation/annotationType(), java.lang.annotation.Annotation/equals(Object), java.lang.annotation.Annotation/hashCode(), java.lang.annotation.Annotation/toString()