Package org.springframework.data.mapping.model

Class BasicPersistentEntity<T,P extends PersistentProperty<P>>

java.lang.Object

org.springframework.data.mapping.model.BasicPersistentEntity<T,P>

All Implemented Interfaces:

Iterable<P>, MutablePersistentEntity<T,P>, PersistentEntity<T,P>

public class BasicPersistentEntity<T,P extends PersistentProperty<P>>
extends Object
implements MutablePersistentEntity<T,P>

Simple value object to capture information of PersistentEntitys.

Author:

Oliver Gierke, Jon Brisbin, Patryk Wasik, Thomas Darimont, Christoph Strobl, Mark Paluch, Johannes Englmeier

Constructor Summary

Constructors

Constructor	Description
BasicPersistentEntity(TypeInformation<T> information)	Creates a new BasicPersistentEntity from the given TypeInformation.
BasicPersistentEntity(TypeInformation<T> information, Comparator<P> comparator)	Creates a new BasicPersistentEntity for the given TypeInformation and Comparator.

Method Summary

Modifier and Type	Method	Description
void	addAssociation(Association<P> association)	Adds an Association to the entity.
void	addPersistentProperty(P property)	Adds a PersistentProperty to the entity.
void	doWithAssociations(AssociationHandler<P> handler)	Applies the given AssociationHandler to all Association contained in this PersistentEntity.
void	doWithAssociations(SimpleAssociationHandler handler)
void	doWithProperties(PropertyHandler<P> handler)	Applies the given PropertyHandler to all PersistentPropertys contained in this PersistentEntity.
void	doWithProperties(SimplePropertyHandler handler)
<A extends Annotation> A	findAnnotation(Class<A> annotationType)	Looks up the annotation of the given type on the PersistentEntity.
protected EvaluationContext	getEvaluationContext(Object rootObject)	Obtain a EvaluationContext for a rootObject.
protected EvaluationContext	getEvaluationContext(Object rootObject, ExpressionDependencies dependencies)	Obtain a EvaluationContext for a rootObject given ExpressionDependencies.
protected IsNewStrategy	getFallbackIsNewStrategy()	Returns the default IsNewStrategy to be used.
IdentifierAccessor	getIdentifierAccessor(Object bean)	Returns the IdentifierAccessor for the given bean.
P	getIdProperty()	Returns the id property of the PersistentEntity.
InstanceCreatorMetadata<P>	getInstanceCreatorMetadata()	Returns the InstanceCreatorMetadata to be used to instantiate objects of this PersistentEntity.
String	getName()	The entity name including any package prefix.
PreferredConstructor<T,P>	getPersistenceConstructor()	Returns the PreferredConstructor to be used to instantiate objects of this PersistentEntity.
Iterable<P>	getPersistentProperties(Class<? extends Annotation> annotationType)	Returns all properties equipped with an Annotation of the given type.
P	getPersistentProperty(String name)	Obtains a PersistentProperty instance by name.
<B> PersistentPropertyAccessor<B>	getPropertyAccessor(B bean)	Returns a PersistentPropertyAccessor to access property values of the given bean.
<B> PersistentPropertyPathAccessor<B>	getPropertyPathAccessor(B bean)	Returns a PersistentPropertyPathAccessor to access property values of the given bean.
Class<T>	getType()	Returns the resolved Java type of this entity.
Alias	getTypeAlias()	Returns the alias to be used when storing type information.
TypeInformation<T>	getTypeInformation()	Returns the TypeInformation backing this PersistentEntity.
P	getVersionProperty()	Returns the version property of the PersistentEntity.
boolean	hasIdProperty()	Returns whether the PersistentEntity has an id property.
boolean	hasVersionProperty()	Returns whether the PersistentEntity has a version property.
<A extends Annotation> boolean	isAnnotationPresent(Class<A> annotationType)	Checks whether the annotation of the given type is present on the PersistentEntity.
boolean	isCreatorArgument(PersistentProperty<?> property)	Returns whether the given PersistentProperty is referred to by a creator argument of the PersistentEntity.
boolean	isIdProperty(PersistentProperty<?> property)	Returns whether the given PersistentProperty is the id property of the entity.
boolean	isImmutable()	Returns whether the entity is considered immutable, i.e. clients shouldn't attempt to change instances via the PersistentPropertyAccessor obtained via PersistentEntity.getPropertyAccessor(Object).
boolean	isNew(Object bean)	Returns whether the given bean is considered new according to the static metadata.
boolean	isVersionProperty(PersistentProperty<?> property)	Returns whether the given PersistentProperty is the version property of the entity.
Iterator<P>	iterator()
boolean	requiresPropertyPopulation()	Returns whether the entity needs properties to be populated, i.e. if any property exists that's not initialized by the constructor.
protected P	returnPropertyIfBetterIdPropertyCandidateOrNull(P property)	Returns the given property if it is a better candidate for the id property than the current id property.
void	setEvaluationContextProvider(EvaluationContextProvider provider)	Sets the EvaluationContextProvider to be used by the entity.
void	setPersistentPropertyAccessorFactory(PersistentPropertyAccessorFactory factory)	Sets the PersistentPropertyAccessorFactory for the entity.
void	verify()	Callback method to trigger validation of the PersistentEntity.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Methods inherited from interface org.springframework.data.mapping.PersistentEntity

doWithAll, getPersistentProperty, getRequiredAnnotation, getRequiredIdProperty, getRequiredPersistentProperty, getRequiredVersionProperty, isConstructorArgument

Constructor Details

BasicPersistentEntity

public BasicPersistentEntity(TypeInformation<T> information)

Creates a new BasicPersistentEntity from the given TypeInformation.

Parameters:

information - must not be null.

BasicPersistentEntity

public BasicPersistentEntity(TypeInformation<T> information,
 @Nullable
 Comparator<P> comparator)

Creates a new BasicPersistentEntity for the given TypeInformation and Comparator. The given Comparator will be used to define the order of the PersistentProperty instances added to the entity.

Parameters:

information - must not be null.

comparator - can be null.

Method Details

getPersistenceConstructor

@Nullable
public PreferredConstructor<T,P> getPersistenceConstructor()

Description copied from interface: PersistentEntity

Returns the PreferredConstructor to be used to instantiate objects of this PersistentEntity.

Specified by:

getPersistenceConstructor in interface PersistentEntity<T,P extends PersistentProperty<P>>

Returns:

null in case no suitable constructor for automatic construction can be found. This usually indicates that the instantiation of the object of that persistent entity is done through either a customer EntityInstantiator or handled by custom conversion mechanisms entirely.

getInstanceCreatorMetadata

@Nullable
public InstanceCreatorMetadata<P> getInstanceCreatorMetadata()

Description copied from interface: PersistentEntity

Returns the InstanceCreatorMetadata to be used to instantiate objects of this PersistentEntity.

Specified by:

getInstanceCreatorMetadata in interface PersistentEntity<T,P extends PersistentProperty<P>>

Returns:

null in case no suitable creation mechanism for automatic construction can be found. This usually indicates that the instantiation of the object of that persistent entity is done through either a customer EntityInstantiator or handled by custom conversion mechanisms entirely.

isCreatorArgument

public boolean isCreatorArgument(PersistentProperty<?> property)

Description copied from interface: PersistentEntity

Returns whether the given PersistentProperty is referred to by a creator argument of the PersistentEntity.

Specified by:

isCreatorArgument in interface PersistentEntity<T,P extends PersistentProperty<P>>

Parameters:

property - can be null.

Returns:

true if the given PersistentProperty is referred to by a creator argument or false if not or null.

isIdProperty

public boolean isIdProperty(PersistentProperty<?> property)

Description copied from interface: PersistentEntity

Returns whether the given PersistentProperty is the id property of the entity.

Specified by:

isIdProperty in interface PersistentEntity<T,P extends PersistentProperty<P>>

Parameters:

property - can be null.

Returns:

true given property is the entities id.

isVersionProperty

public boolean isVersionProperty(PersistentProperty<?> property)

Description copied from interface: PersistentEntity

Returns whether the given PersistentProperty is the version property of the entity.

Specified by:

isVersionProperty in interface PersistentEntity<T,P extends PersistentProperty<P>>

Parameters:

property - can be null.

Returns:

true given property is used as version.

getName

public String getName()

Description copied from interface: PersistentEntity

The entity name including any package prefix.

Specified by:

getName in interface PersistentEntity<T,P extends PersistentProperty<P>>

Returns:

must never return null.

getIdProperty

@Nullable
public P getIdProperty()

Description copied from interface: PersistentEntity

Returns the id property of the PersistentEntity. Can be null in case this is an entity completely handled by a custom conversion.

Specified by:

getIdProperty in interface PersistentEntity<T,P extends PersistentProperty<P>>

Returns:

the id property of the PersistentEntity.

getVersionProperty

@Nullable
public P getVersionProperty()

Description copied from interface: PersistentEntity

Returns the version property of the PersistentEntity. Can be null in case no version property is available on the entity.

Specified by:

getVersionProperty in interface PersistentEntity<T,P extends PersistentProperty<P>>

Returns:

the version property of the PersistentEntity.

hasIdProperty

public boolean hasIdProperty()

Description copied from interface: PersistentEntity

Returns whether the PersistentEntity has an id property. If this call returns true, PersistentEntity.getIdProperty() will return a non-null value.

Specified by:

hasIdProperty in interface PersistentEntity<T,P extends PersistentProperty<P>>

Returns:

true if entity has an id property.

hasVersionProperty

public boolean hasVersionProperty()

Description copied from interface: PersistentEntity

Returns whether the PersistentEntity has a version property. If this call returns true, PersistentEntity.getVersionProperty() will return a non-null value.

Specified by:

hasVersionProperty in interface PersistentEntity<T,P extends PersistentProperty<P>>

Returns:

true if entity has a version property.

addPersistentProperty

public void addPersistentProperty(P property)

Description copied from interface: MutablePersistentEntity

Adds a PersistentProperty to the entity.

Specified by:

addPersistentProperty in interface MutablePersistentEntity<T,P extends PersistentProperty<P>>

setEvaluationContextProvider

public void setEvaluationContextProvider(EvaluationContextProvider provider)

Description copied from interface: MutablePersistentEntity

Sets the EvaluationContextProvider to be used by the entity.

Specified by:

setEvaluationContextProvider in interface MutablePersistentEntity<T,P extends PersistentProperty<P>>

Parameters:

provider - must not be null.

returnPropertyIfBetterIdPropertyCandidateOrNull

@Nullable
protected P returnPropertyIfBetterIdPropertyCandidateOrNull(P property)

Returns the given property if it is a better candidate for the id property than the current id property.

Parameters:

property - the new id property candidate, will never be null.

Returns:

the given id property or null if the given property is not an id property.

addAssociation

public void addAssociation(Association<P> association)

Description copied from interface: MutablePersistentEntity

Adds an Association to the entity.

Specified by:

addAssociation in interface MutablePersistentEntity<T,P extends PersistentProperty<P>>

getPersistentProperty

@Nullable
public P getPersistentProperty(String name)

Description copied from interface: PersistentEntity

Obtains a PersistentProperty instance by name.

Specified by:

getPersistentProperty in interface PersistentEntity<T,P extends PersistentProperty<P>>

Parameters:

name - The name of the property. Can be null.

Returns:

the PersistentProperty or null if it doesn't exist.

getPersistentProperties

public Iterable<P> getPersistentProperties(Class<? extends Annotation> annotationType)

Description copied from interface: PersistentEntity

Returns all properties equipped with an Annotation of the given type.

Specified by:

getPersistentProperties in interface PersistentEntity<T,P extends PersistentProperty<P>>

Parameters:

annotationType - must not be null.

Returns:

empty Iterator if no match found. Never null.

getType

public Class<T> getType()

Description copied from interface: PersistentEntity

Returns the resolved Java type of this entity.

Specified by:

getType in interface PersistentEntity<T,P extends PersistentProperty<P>>

Returns:

The underlying Java class for this entity. Never null.

getTypeAlias

public Alias getTypeAlias()

Description copied from interface: PersistentEntity

Returns the alias to be used when storing type information. Might be null to indicate that there was no alias defined through the mapping metadata.

Specified by:

getTypeAlias in interface PersistentEntity<T,P extends PersistentProperty<P>>

Returns:

getTypeInformation

public TypeInformation<T> getTypeInformation()

Description copied from interface: PersistentEntity

Returns the TypeInformation backing this PersistentEntity.

Specified by:

getTypeInformation in interface PersistentEntity<T,P extends PersistentProperty<P>>

Returns:

doWithProperties

public void doWithProperties(PropertyHandler<P> handler)

Description copied from interface: PersistentEntity

Applies the given PropertyHandler to all PersistentPropertys contained in this PersistentEntity.

Specified by:

doWithProperties in interface PersistentEntity<T,P extends PersistentProperty<P>>

Parameters:

handler - must not be null.

doWithProperties

public void doWithProperties(SimplePropertyHandler handler)

Specified by:

doWithProperties in interface PersistentEntity<T,P extends PersistentProperty<P>>

doWithAssociations

public void doWithAssociations(AssociationHandler<P> handler)

Description copied from interface: PersistentEntity

Applies the given AssociationHandler to all Association contained in this PersistentEntity.

Specified by:

doWithAssociations in interface PersistentEntity<T,P extends PersistentProperty<P>>

Parameters:

handler - must not be null.

doWithAssociations

public void doWithAssociations(SimpleAssociationHandler handler)

Specified by:

doWithAssociations in interface PersistentEntity<T,P extends PersistentProperty<P>>

findAnnotation

@Nullable
public <A extends Annotation> A findAnnotation(Class<A> annotationType)

Description copied from interface: PersistentEntity

Looks up the annotation of the given type on the PersistentEntity.

Specified by:

findAnnotation in interface PersistentEntity<T,P extends PersistentProperty<P>>

Parameters:

annotationType - must not be null.

Returns:

null if not found.

isAnnotationPresent

public <A extends Annotation> boolean isAnnotationPresent(Class<A> annotationType)

Description copied from interface: PersistentEntity

Checks whether the annotation of the given type is present on the PersistentEntity.

Specified by:

isAnnotationPresent in interface PersistentEntity<T,P extends PersistentProperty<P>>

Parameters:

annotationType - must not be null.

Returns:

true if Annotation of given type is present.

verify

public void verify()

Description copied from interface: MutablePersistentEntity

Callback method to trigger validation of the PersistentEntity. As MutablePersistentEntity is not immutable there might be some verification steps necessary after the object has reached is final state.

Specified by:

verify in interface MutablePersistentEntity<T,P extends PersistentProperty<P>>

setPersistentPropertyAccessorFactory

public void setPersistentPropertyAccessorFactory(PersistentPropertyAccessorFactory factory)

Description copied from interface: MutablePersistentEntity

Sets the PersistentPropertyAccessorFactory for the entity. A PersistentPropertyAccessorFactory creates PersistentPropertyAccessors for instances of this entity.

Specified by:

setPersistentPropertyAccessorFactory in interface MutablePersistentEntity<T,P extends PersistentProperty<P>>

Parameters:

factory - must not be null.

getPropertyAccessor

public <B> PersistentPropertyAccessor<B> getPropertyAccessor(B bean)

Description copied from interface: PersistentEntity

Returns a PersistentPropertyAccessor to access property values of the given bean.

Specified by:

getPropertyAccessor in interface PersistentEntity<T,P extends PersistentProperty<P>>

Parameters:

bean - must not be null.

Returns:

new PersistentPropertyAccessor.

getPropertyPathAccessor

public <B> PersistentPropertyPathAccessor<B> getPropertyPathAccessor(B bean)

Description copied from interface: PersistentEntity

Returns a PersistentPropertyPathAccessor to access property values of the given bean.

Specified by:

getPropertyPathAccessor in interface PersistentEntity<T,P extends PersistentProperty<P>>

Parameters:

bean - must not be null.

Returns:

a new PersistentPropertyPathAccessor

getIdentifierAccessor

public IdentifierAccessor getIdentifierAccessor(Object bean)

Description copied from interface: PersistentEntity

Returns the IdentifierAccessor for the given bean.

Specified by:

getIdentifierAccessor in interface PersistentEntity<T,P extends PersistentProperty<P>>

Parameters:

bean - must not be null.

Returns:

new IdentifierAccessor.

isNew

public boolean isNew(Object bean)

Description copied from interface: PersistentEntity

Returns whether the given bean is considered new according to the static metadata.

Specified by:

isNew in interface PersistentEntity<T,P extends PersistentProperty<P>>

Parameters:

bean - must not be null.

Returns:

whether the given bean is considered a new instance.

isImmutable

public boolean isImmutable()

Description copied from interface: PersistentEntity

Returns whether the entity is considered immutable, i.e. clients shouldn't attempt to change instances via the PersistentPropertyAccessor obtained via PersistentEntity.getPropertyAccessor(Object).

Specified by:

isImmutable in interface PersistentEntity<T,P extends PersistentProperty<P>>

Returns:

See Also:

• Immutable

requiresPropertyPopulation

public boolean requiresPropertyPopulation()

Description copied from interface: PersistentEntity

Returns whether the entity needs properties to be populated, i.e. if any property exists that's not initialized by the constructor.

Specified by:

requiresPropertyPopulation in interface PersistentEntity<T,P extends PersistentProperty<P>>

Returns:

iterator

public Iterator<P> iterator()

Specified by:

iterator in interface Iterable<T>

getEvaluationContext

protected EvaluationContext getEvaluationContext(Object rootObject)

Obtain a EvaluationContext for a rootObject.

Parameters:

rootObject - must not be null.

Returns:

the evaluation context including all potential extensions.

Since:

2.1

getEvaluationContext

protected EvaluationContext getEvaluationContext(Object rootObject,
 ExpressionDependencies dependencies)

Obtain a EvaluationContext for a rootObject given ExpressionDependencies.

Parameters:

rootObject - must not be null.

dependencies - must not be null.

Returns:

the evaluation context with extensions loaded that satisfy ExpressionDependencies.

Since:

2.5

getFallbackIsNewStrategy

protected IsNewStrategy getFallbackIsNewStrategy()

Returns the default IsNewStrategy to be used. Will be a PersistentEntityIsNewStrategy by default. Note, that this strategy only gets used if the entity doesn't implement Persistable as this indicates the user wants to be in control over whether an entity is new or not.

Returns:

Since:

2.1