|
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: REQUIRED | OPTIONAL | DETAIL: ELEMENT |
@Target(value={}) @Retention(value=RUNTIME) public @interface EntityResult
Used to map the SELECT clause of a SQL query to an entity result. If this annotation is used, the SQL statement should select all of the columns that are mapped to the entity object. This should include foreign key columns to related entities. The results obtained when insufficient data is available are undefined.
Example: Query q = em.createNativeQuery( "SELECT o.id, o.quantity, o.item, i.id, i.name, i.description "+ "FROM Order o, Item i " + "WHERE (o.quantity > 25) AND (o.item = i.id)", "OrderItemResults"); @SqlResultSetMapping(name="OrderItemResults", entities={ @EntityResult(entityClass=com.acme.Order.class), @EntityResult(entityClass=com.acme.Item.class) })
SqlResultSetMapping
Required Element Summary | |
---|---|
java.lang.Class |
entityClass
The class of the result. |
Optional Element Summary | |
---|---|
java.lang.String |
discriminatorColumn
Specifies the column name (or alias) of the column in the SELECT list that is used to determine the type of the entity instance. |
FieldResult[] |
fields
Maps the columns specified in the SELECT list of the query to the properties or fields of the entity class. |
Element Detail |
---|
public abstract java.lang.Class entityClass
public abstract FieldResult[] fields
public abstract java.lang.String discriminatorColumn
|
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: REQUIRED | OPTIONAL | DETAIL: ELEMENT |
Copyright © 2009-2011, Oracle Corporation and/or its affiliates. All Rights Reserved. Use is subject to license terms.
Generated on 10-February-2011 12:41