javax.persistence.metamodel

Interface Metamodel

Contents

  • public interface Metamodel
    Provides access to the metamodel of persistent entities in the persistence unit.
    Since:
    Java Persistence 2.0

    • Method Detail

      • entity

        <X> EntityType<X> entity(Class<X> cls)
        Return the metamodel entity type representing the entity.
        Parameters:
        cls - the type of the represented entity
        Returns:
        the metamodel entity type
        Throws:
        IllegalArgumentException - if not an entity

      • managedType

        <X> ManagedType<X> managedType(Class<X> cls)
        Return the metamodel managed type representing the entity, mapped superclass, or embeddable class.
        Parameters:
        cls - the type of the represented managed class
        Returns:
        the metamodel managed type
        Throws:
        IllegalArgumentException - if not a managed class

      • embeddable

        <X> EmbeddableType<X> embeddable(Class<X> cls)
        Return the metamodel embeddable type representing the embeddable class.
        Parameters:
        cls - the type of the represented embeddable class
        Returns:
        the metamodel embeddable type
        Throws:
        IllegalArgumentException - if not an embeddable class

      • getManagedTypes

        Set<ManagedType<?>> getManagedTypes()
        Return the metamodel managed types.
        Returns:
        the metamodel managed types

      • getEntities

        Set<EntityType<?>> getEntities()
        Return the metamodel entity types.
        Returns:
        the metamodel entity types

      • getEmbeddables

        Set<EmbeddableType<?>> getEmbeddables()
        Return the metamodel embeddable types. Returns empty set if there are no embeddable types.
        Returns:
        the metamodel embeddable types

Document created the 11/06/2005, last modified the 18/08/2025
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