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 Summary

Constructors

Constructor	Description
JpaMetamodelEntityInformation(Class<T> domainClass, jakarta.persistence.metamodel.Metamodel metamodel, jakarta.persistence.PersistenceUnitUtil persistenceUnitUtil)	Creates a new JpaMetamodelEntityInformation for the given domain class and Metamodel.

Method Summary

Modifier and Type	Method	Description
Object	getCompositeIdAttributeValue(Object id, String idAttribute)	Extracts the value for the given id attribute from a composite id
String	getEntityName()	Returns the name of the entity.
ID	getId(T entity)
jakarta.persistence.metamodel.SingularAttribute<? super T,?>	getIdAttribute()	Returns the id attribute of the entity.
Iterable<String>	getIdAttributeNames()	Returns the attribute names of the id attributes.
Class<ID>	getIdType()
boolean	hasCompositeId()	Returns true if the entity has a composite id.
boolean	isNew(T entity)

Methods inherited from class org.springframework.data.jpa.repository.support.JpaEntityInformationSupport

getEntityInformation

Methods inherited from class org.springframework.data.repository.core.support.AbstractEntityInformation

getJavaType

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.springframework.data.repository.core.EntityInformation

getRequiredId

Methods inherited from interface org.springframework.data.repository.core.EntityMetadata

getJavaType

Methods inherited from interface org.springframework.data.jpa.repository.support.JpaEntityInformation

getRequiredIdAttribute

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.

Returns:

hasCompositeId

public boolean hasCompositeId()

Description copied from interface: JpaEntityInformation

Returns true if the entity has a composite id.

Returns:

getIdAttributeNames

public Iterable<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.

Returns:

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

Returns:

isNew

public boolean isNew(T entity)

Specified by:

isNew in interface EntityInformation<T,ID>

Overrides:

isNew in class AbstractEntityInformation<T,ID>