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

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

Modifier and Type	Method and 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)
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.
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.jpa.repository.support.JpaEntityInformation

getRequiredIdAttribute

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

getRequiredId

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

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 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(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>