Package jakarta.data.model

package jakarta.data.model

A static metamodel for entities that are used in Jakarta Data repositories.

The StaticMetamodel allows for type-safe operations that avoid the need to hard-code entity attribute names as Strings. For example,

 @Entity
 public class Product {
     @Id
     public long id;

     public String name;

     public float price;
 }

 @StaticMetamodel(Product.class)
 public class Product_ {
     public static final Attribute id = Attribute.get();
     public static final Attribute name = Attribute.get();
     public static final Attribute price = Attribute.get();
 }

 ...

 @Repository
 Product products;

 ...

 Pageable pageRequest = Pageable.ofSize(20)
                                .sortBy(Product_price.desc(),
                                        Product_name.asc(),
                                        Product_id.asc());

 page1 = products.findByNameLike(namePattern, pageRequest);
 

Related Packages

Package	Description
jakarta.data	Jakarta Data provides an API that makes data access easy.
jakarta.data.exceptions	Common data access exceptions.
jakarta.data.page	Splits query results into slices or pages.
jakarta.data.repository	In Domain-driven design, DDD, a repository is an object that participates in the domain but abstracts away storage and infrastructure details.

Class	Description
Attribute	Represents an entity attribute in the StaticMetamodel.
AttributeInfo	Implemented by the Jakarta Data provider to initialize an attribute field in the StaticMetamodel.
StaticMetamodel	Annotates a class to serve as a static metamodel for an entity, enabling type-safe access to entity attribute names and related objects, such as Sorts for an attribute.