Package org.springframework.data.jpa.repository.support

Class JpaMetamodelEntityInformation<T,ID>

java.lang.Object
org.springframework.data.repository.core.support.AbstractEntityInformation<T,ID>
org.springframework.data.jpa.repository.support.JpaEntityInformationSupport<T,ID>
org.springframework.data.jpa.repository.support.JpaMetamodelEntityInformation<T,ID>
All Implemented Interfaces:
JpaEntityMetadata<T>, JpaEntityInformation<T,ID>, EntityInformation<T,ID>, EntityMetadata<T>
Direct Known Subclasses:
JpaPersistableEntityInformation
public class JpaMetamodelEntityInformation<T,ID> extends JpaEntityInformationSupport<T,ID>
Implementation of EntityInformation that uses JPA Metamodel to find the domain class' id field.
Author:
Oliver Gierke, Thomas Darimont, Christoph Strobl, Mark Paluch, Jens Schauder, Greg Turnquist

  • Constructor Details

    • JpaMetamodelEntityInformation

      public JpaMetamodelEntityInformation(Class<T> domainClass, jakarta.persistence.metamodel.Metamodel metamodel, jakarta.persistence.PersistenceUnitUtil persistenceUnitUtil)
      Creates a new JpaMetamodelEntityInformation for the given domain class and Metamodel.
      Parameters:
      domainClass - must not be null.
      metamodel - must not be null.
      persistenceUnitUtil - must not be null.

  • Method Details

    • getEntityName

      public String getEntityName()
      Description copied from interface: JpaEntityMetadata
      Returns the name of the entity.
      Specified by:
      getEntityName in interface JpaEntityMetadata<T>
      Overrides:
      getEntityName in class JpaEntityInformationSupport<T,ID>
      Returns:

    • getId

      @Nullable public ID getId(T entity)

    • getIdType

      public Class<ID> getIdType()

    • getIdAttribute

      public jakarta.persistence.metamodel.SingularAttribute<? super T,?> getIdAttribute()
      Description copied from interface: JpaEntityInformation
      Returns the id attribute of the entity.

    • hasCompositeId

      public boolean hasCompositeId()
      Description copied from interface: JpaEntityInformation
      Returns true if the entity has a composite id.

    • getIdAttributeNames

      public Collection<String> getIdAttributeNames()
      Description copied from interface: JpaEntityInformation
      Returns the attribute names of the id attributes. If the entity has a composite id, then all id attribute names are returned. If the entity has a single id attribute then this single attribute name is returned.

    • getCompositeIdAttributeValue

      public Object getCompositeIdAttributeValue(Object id, String idAttribute)
      Description copied from interface: JpaEntityInformation
      Extracts the value for the given id attribute from a composite id
      Parameters:
      id - the composite id from which to extract the attribute.
      idAttribute - the attribute name to extract.

    • isNew

      public boolean isNew(T entity)
      Specified by:
      isNew in interface EntityInformation<T,ID>
      Overrides:
      isNew in class AbstractEntityInformation<T,ID>

    • getKeyset

      public Map<String,Object> getKeyset(Iterable<String> propertyPaths, T entity)
      Description copied from interface: JpaEntityInformation
      Extract a keyset for propertyPaths and the primary key (including composite key components if applicable).
      Parameters:
      propertyPaths - the property paths that make up the keyset in combination with the composite key components.
      entity - the entity to extract values from
      Returns:
      a map mapping String representations of the paths to values from the entity.