org.springframework.data.jpa.repository.support

Class JpaMetamodelEntityInformation<T,ID extends Serializable>

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:

JpaEntityInformation<T,ID>, EntityInformation<T,ID>, EntityMetadata<T>

Direct Known Subclasses:

JpaPersistableEntityInformation

public class JpaMetamodelEntityInformation<T,ID extends Serializable>
extends JpaEntityInformationSupport<T,ID>

Implementation of EntityInformation that uses JPA Metamodel to find the domain class' id field.

Author:

Oliver Gierke, Thomas Darimont

Constructor Summary

Constructors

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

Method Summary

Methods

Modifier and Type	Method and Description
Object	getCompositeIdAttributeValue(Serializable id, String idAttribute) Extracts the value for the given id attribute from a composite id
ID	getId(T entity)
javax.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

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

getEntityName, getMetadata

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

getJavaType, isNew

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

isNew

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

getJavaType

Constructor Detail

JpaMetamodelEntityInformation

public JpaMetamodelEntityInformation(Class<T> domainClass,
                             javax.persistence.metamodel.Metamodel metamodel)

Creates a new JpaMetamodelEntityInformation for the given domain class and Metamodel.

Parameters:

domainClass - must not be null.

metamodel - must not be null.

Method Detail

getId

public ID getId(T entity)

getIdType

public Class<ID> getIdType()

getIdAttribute

public javax.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(Serializable id,
                                  String idAttribute)

Description copied from interface: JpaEntityInformation

Extracts the value for the given id attribute from a composite id

Returns: