Package cz.cvut.kbss.jopa.model.annotations

Annotation Interface FieldResult

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

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

Note that if variable is not bound in result row, the field is skipped (its value is not set).

Example:

     
         Query q = em.createNativeQuery(
 "SELECT ?x, ?quantity, ?item, ?label, ?description "+
 "WHERE {
     ?x a <http://onto.fel.cvut.cz/ontologies/jopa/Order> ;
        <http://onto.fel.cvut.cz/ontologies/ufo/has_part> ?item .
     ?item a <http://onto.fel.cvut.cz/ontologies/jopa/Order> ;
           rdfs:label ?label;
           rdfs:comment ?description .
 }", "OrderItemResults");

 @SparqlResultSetMapping(name="OrderItemResults",
 entities={
 @EntityResult(entityClass=cz.cvut.kbss.jopa.Order.class, fields = {
     @FieldResult(name="uri", variable="x")
 }),
 @EntityResult(entityClass=cz.cvut.kbss.jopa.Item.class)
 })
     
 

See Also:

• EntityResult
• SparqlResultSetMapping

Required Element Summary

Required Elements

Modifier and Type	Required Element	Description
String	name	Name of the persistent field or property of the class.
String	variable	Name of the variable in the SELECT clause.

Element Details

name

String name

Name of the persistent field or property of the class.

variable

String variable

Name of the variable in the SELECT clause.