Package jakarta.persistence.metamodel
Interface Metamodel
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public interface Metamodel
Provides access to the metamodel of persistent entities in the persistence unit.- Since:
- 2.0
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description <X> EmbeddableType<X>
embeddable(Class<X> cls)
Return the metamodel embeddable type representing the embeddable class.<X> EntityType<X>
entity(Class<X> cls)
Return the metamodel entity type representing the entity.Set<EmbeddableType<?>>
getEmbeddables()
Return the metamodel embeddable types.Set<EntityType<?>>
getEntities()
Return the metamodel entity types.Set<ManagedType<?>>
getManagedTypes()
Return the metamodel managed types.<X> ManagedType<X>
managedType(Class<X> cls)
Return the metamodel managed type representing the entity, mapped superclass, or embeddable class.
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Method Detail
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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
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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
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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
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getManagedTypes
Set<ManagedType<?>> getManagedTypes()
Return the metamodel managed types.- Returns:
- the metamodel managed types
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getEntities
Set<EntityType<?>> getEntities()
Return the metamodel entity types.- Returns:
- the metamodel entity types
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getEmbeddables
Set<EmbeddableType<?>> getEmbeddables()
Return the metamodel embeddable types. Returns empty set if there are no embeddable types.- Returns:
- the metamodel embeddable types
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