Package org.springframework.data.mapping

Interface PersistentEntity<T,P extends PersistentProperty<P>>

All Superinterfaces:
Iterable<P>
All Known Subinterfaces:
MutablePersistentEntity<T,P>
All Known Implementing Classes:
BasicPersistentEntity
public interface PersistentEntity<T,P extends PersistentProperty<P>> extends Iterable<P>
Represents a persistent entity. The order of the properties returned via the Iterator is not guaranteed.
Author:
Oliver Gierke, Graeme Rocher, Jon Brisbin, Patryk Wasik, Mark Paluch, Christoph Strobl, Johannes Englmeier

  • Method Details

    • getName

      String getName()
      The entity name including any package prefix.
      Returns:
      must never return null.

    • getPersistenceConstructor

      @Nullable @Deprecated PreferredConstructor<T,P> getPersistenceConstructor()
      Deprecated.
      since 3.0, use getInstanceCreatorMetadata().
      Returns the PreferredConstructor to be used to instantiate objects of this PersistentEntity.
      Returns:
      null in case no suitable constructor for automatic construction can be found. This usually indicates that the instantiation of the object of that persistent entity is done through either a customer EntityInstantiator or handled by custom conversion mechanisms entirely.

    • getInstanceCreatorMetadata

      @Nullable InstanceCreatorMetadata<P> getInstanceCreatorMetadata()
      Returns the InstanceCreatorMetadata to be used to instantiate objects of this PersistentEntity.
      Returns:
      null in case no suitable creation mechanism for automatic construction can be found. This usually indicates that the instantiation of the object of that persistent entity is done through either a customer EntityInstantiator or handled by custom conversion mechanisms entirely.
      Since:
      3.0

    • isConstructorArgument

      @Deprecated default boolean isConstructorArgument(PersistentProperty<?> property)
      Deprecated.
      since 3.0, use isCreatorArgument(PersistentProperty) instead.
      Returns whether the given PersistentProperty is referred to by a constructor argument of the PersistentEntity.
      Parameters:
      property - can be null.
      Returns:
      true if the given PersistentProperty is referred to by a constructor argument or false if not or null.

    • isCreatorArgument

      boolean isCreatorArgument(PersistentProperty<?> property)
      Returns whether the given PersistentProperty is referred to by a creator argument of the PersistentEntity.
      Parameters:
      property - can be null.
      Returns:
      true if the given PersistentProperty is referred to by a creator argument or false if not or null.

    • isIdProperty

      boolean isIdProperty(PersistentProperty<?> property)
      Returns whether the given PersistentProperty is the id property of the entity.
      Parameters:
      property - can be null.
      Returns:
      true given property is the entities id.

    • isVersionProperty

      boolean isVersionProperty(PersistentProperty<?> property)
      Returns whether the given PersistentProperty is the version property of the entity.
      Parameters:
      property - can be null.
      Returns:
      true given property is used as version.

    • getIdProperty

      @Nullable P getIdProperty()
      Returns the id property of the PersistentEntity. Can be null in case this is an entity completely handled by a custom conversion.
      Returns:
      the id property of the PersistentEntity.

    • getRequiredIdProperty

      default P getRequiredIdProperty()
      Returns the id property of the PersistentEntity.
      Returns:
      the id property of the PersistentEntity.
      Throws:
      IllegalStateException - if PersistentEntity does not define an id property.
      Since:
      2.0

    • getVersionProperty

      @Nullable P getVersionProperty()
      Returns the version property of the PersistentEntity. Can be null in case no version property is available on the entity.
      Returns:
      the version property of the PersistentEntity.

    • getRequiredVersionProperty

      default P getRequiredVersionProperty()
      Returns the version property of the PersistentEntity. Can be null in case no version property is available on the entity.
      Returns:
      the version property of the PersistentEntity.
      Throws:
      IllegalStateException - if PersistentEntity does not define a version property.
      Since:
      2.0

    • getPersistentProperty

      @Nullable P getPersistentProperty(String name)
      Obtains a PersistentProperty instance by name.
      Parameters:
      name - The name of the property. Can be null.
      Returns:
      the PersistentProperty or null if it doesn't exist.

    • getRequiredPersistentProperty

      default P getRequiredPersistentProperty(String name)
      Returns the PersistentProperty with the given name.
      Parameters:
      name - the name of the property. Can be null or empty.
      Returns:
      the PersistentProperty with the given name.
      Throws:
      IllegalStateException - in case no property with the given name exists.

    • getPersistentProperty

      @Nullable default P getPersistentProperty(Class<? extends Annotation> annotationType)
      Returns the first property equipped with an Annotation of the given type.
      Parameters:
      annotationType - must not be null.
      Returns:
      null if no property found with given annotation type.
      Since:
      1.8

    • getPersistentProperties

      Iterable<P> getPersistentProperties(Class<? extends Annotation> annotationType)
      Returns all properties equipped with an Annotation of the given type.
      Parameters:
      annotationType - must not be null.
      Returns:
      empty Iterator if no match found. Never null.
      Since:
      2.0

    • hasIdProperty

      boolean hasIdProperty()
      Returns whether the PersistentEntity has an id property. If this call returns true, getIdProperty() will return a non-null value.
      Returns:
      true if entity has an id property.

    • hasVersionProperty

      boolean hasVersionProperty()
      Returns whether the PersistentEntity has a version property. If this call returns true, getVersionProperty() will return a non-null value.
      Returns:
      true if entity has a version property.

    • getType

      Class<T> getType()
      Returns the resolved Java type of this entity.
      Returns:
      The underlying Java class for this entity. Never null.

    • getTypeAlias

      Alias getTypeAlias()
      Returns the alias to be used when storing type information. Might be null to indicate that there was no alias defined through the mapping metadata.
      Returns:

    • getTypeInformation

      TypeInformation<T> getTypeInformation()
      Returns the TypeInformation backing this PersistentEntity.
      Returns:

    • doWithProperties

      void doWithProperties(PropertyHandler<P> handler)
      Applies the given PropertyHandler to all PersistentPropertys contained in this PersistentEntity. The iteration order is undefined.
      Parameters:
      handler - must not be null.

    • doWithProperties

      void doWithProperties(SimplePropertyHandler handler)
      Applies the given SimplePropertyHandler to all PersistentPropertys contained in this PersistentEntity. The iteration order is undefined.
      Parameters:
      handler - must not be null.

    • doWithAssociations

      void doWithAssociations(AssociationHandler<P> handler)
      Applies the given AssociationHandler to all Association contained in this PersistentEntity. The iteration order is undefined.
      Parameters:
      handler - must not be null.

    • doWithAssociations

      void doWithAssociations(SimpleAssociationHandler handler)
      Applies the given SimpleAssociationHandler to all Association contained in this PersistentEntity. The iteration order is undefined.
      Parameters:
      handler - must not be null.

    • doWithAll

      default void doWithAll(PropertyHandler<P> handler)
      Applies the given PropertyHandler to both all PersistentPropertys as well as all inverse properties of all Associations. The iteration order is undefined.
      Parameters:
      handler - must not be null.
      Since:
      2.5

    • findAnnotation

      @Nullable <A extends Annotation> A findAnnotation(Class<A> annotationType)
      Looks up the annotation of the given type on the PersistentEntity.
      Parameters:
      annotationType - must not be null.
      Returns:
      null if not found.
      Since:
      1.8

    • getRequiredAnnotation

      default <A extends Annotation> A getRequiredAnnotation(Class<A> annotationType) throws IllegalStateException
      Returns the required annotation of the given type on the PersistentEntity.
      Parameters:
      annotationType - must not be null.
      Returns:
      the annotation.
      Throws:
      IllegalStateException - if the required annotationType is not found.
      Since:
      2.0

    • isAnnotationPresent

      <A extends Annotation> boolean isAnnotationPresent(Class<A> annotationType)
      Checks whether the annotation of the given type is present on the PersistentEntity.
      Parameters:
      annotationType - must not be null.
      Returns:
      true if Annotation of given type is present.
      Since:
      2.0

    • getPropertyAccessor

      <B> PersistentPropertyAccessor<B> getPropertyAccessor(B bean)
      Returns a PersistentPropertyAccessor to access property values of the given bean.
      Parameters:
      bean - must not be null.
      Returns:
      new PersistentPropertyAccessor.
      Since:
      1.10

    • getPropertyPathAccessor

      <B> PersistentPropertyPathAccessor<B> getPropertyPathAccessor(B bean)
      Returns a PersistentPropertyPathAccessor to access property values of the given bean.
      Parameters:
      bean - must not be null.
      Returns:
      a new PersistentPropertyPathAccessor
      Since:
      2.3

    • getIdentifierAccessor

      IdentifierAccessor getIdentifierAccessor(Object bean)
      Returns the IdentifierAccessor for the given bean.
      Parameters:
      bean - must not be null.
      Returns:
      new IdentifierAccessor.
      Since:
      1.10

    • isNew

      boolean isNew(Object bean)
      Returns whether the given bean is considered new according to the static metadata.
      Parameters:
      bean - must not be null.
      Returns:
      whether the given bean is considered a new instance.
      Throws:
      IllegalArgumentException - in case the given bean is not an instance of the typ represented by the PersistentEntity.

    • isImmutable

      boolean isImmutable()
      Returns whether the entity is considered immutable, i.e. clients shouldn't attempt to change instances via the PersistentPropertyAccessor obtained via getPropertyAccessor(Object).
      Returns:
      Since:
      2.1
      See Also:

    • requiresPropertyPopulation

      boolean requiresPropertyPopulation()
      Returns whether the entity needs properties to be populated, i.e. if any property exists that's not initialized by the constructor.
      Returns:
      Since:
      2.1