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ObjectDB Object Database Features

> embeddable_classes">Embeddable types (@Embeddable

Storing JPA Entity Objects

/jpa/entity/types#embeddable_classes">embeddable class the Employee entity object

Comparison in JPQL and Criteria API

>Instances of user defined classes (entity classes and embeddable classes) can be compared by using ... value. For embeddable objects, e1 = e2 if e1 and e2

JPA Persistence Unit

A JPA Persistence Unit is a logical grouping of user defined persistable classes (entity classes, embeddable classes and mapped superclasses) with related settings. Defining a persistence ... persistable classes (entity classes, embeddable classes and mapped superclasses), which are referred to by

javax.persistence.metamodel.Metamodel

">embeddable_Class_" title="Method of javax.persistence.metamodel.Metamodel">embeddable (Class<X> cls) Return the metamodel embeddable type representing the embeddable class.

javax.persistence.AssociationOverride

> May be used to override a relationship mapping from an embeddable within an entity to another entity when the embeddable is on the owning side of the relationship. When used to override a relationship mapping defined by an embeddable class (including an embeddable class embedded

SELECT clause (JPQL / Criteria API)

embeddable objects) return as results value copies that are not associated with the containing entities

Entity Management Settings

embeddable class). The <cascade-persist> element

Posting Sample Code

>static inner classes for entity / embeddable classes. Avoid dependency

Paths and Types in JPQL and Criteria API

Instances of user defined persistable classes (entity classes, mapped super classes and embeddable classes) are represented in JPQL by the following types of expressions: Variables - FROM identification variables