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

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

Method Summary

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: