About named
JPA Named Queries
Explains how to define and how to run JPA named queries. A named query is a statically defined query with a predefined unchangeable query string. Using named queries instead of dynamic queries may improve code organization by ... and @NamedQueries Annotations Using Named Queries at Runtime @NamedQuery ...
Query Parameters in JPA
Explains how to use parameters (named parameters and ordinal parameters) in JPA queries.... This page covers the following topics: Named Parameters (:name) Ordinal Parameters (?index) ... API Parameter Methods Named Parameters (:name) The following method retrieves a Country ...
javax.persistence.metamodel.EntityType
Instances of the type EntityType represent entity types.(Interface of JPA)
javax.persistence.metamodel.ManagedType
Instances of the type ManagedType represent entity, mapped superclass, and embeddable types.(Interface of JPA)
javax.persistence.metamodel.EmbeddableType
Instances of the type EmbeddableType represent embeddable types.(Interface of JPA)
javax.persistence.metamodel.MappedSuperclassType
Instances of the type MappedSuperclassType represent mapped superclass types.(Interface of JPA)
javax.persistence.metamodel.IdentifiableType
Instances of the type IdentifiableType represent entity or mapped superclass types.(Interface of JPA)
JPA Persistable Types
Explains how JPA manages types, including entity classes, embeddable classes, primitive types, wrappers, string, date, enum, collections and maps. The term persistable types refers to data types that can be used in storing data in the database. ObjectDB supports all the JPA persistable types, which are: User defined classes - Entity classes, Mapped superclasses, Embeddable cl ...
JPA Query API
Describes the API that JPA provides for running queries against the database.... class to ObjectDB. Dynamic JPQL, Criteria API and Named Queries Building queries by passing JPQL query strings directly ... JPA also provides a way for building static queries, as named queries , using the @NamedQuery javax.persistence.NamedQuery ...
