Package org.hibernate.sql.results.graph.entity.internal

Class EntitySelectFetchInitializer<Data extends EntitySelectFetchInitializer.EntitySelectFetchInitializerData>

java.lang.Object

org.hibernate.sql.results.graph.internal.AbstractInitializer<Data>

org.hibernate.sql.results.graph.entity.internal.EntitySelectFetchInitializer<Data>

All Implemented Interfaces:

EntityInitializer<Data>, Initializer<Data>, InitializerParent<Data>

Direct Known Subclasses:

AbstractBatchEntitySelectFetchInitializer, EntitySelectFetchByUniqueKeyInitializer

public class EntitySelectFetchInitializer<Data extends EntitySelectFetchInitializer.EntitySelectFetchInitializerData>
extends AbstractInitializer<Data>
implements EntityInitializer<Data>

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	EntitySelectFetchInitializer.EntitySelectFetchInitializerData

Nested classes/interfaces inherited from interface org.hibernate.sql.results.graph.Initializer

Initializer.State

Field Summary

Fields

Modifier and Type	Field	Description
protected final boolean	affectedByFilter
protected final EntityPersister	concreteDescriptor
protected final boolean	hasLazySubInitializer
protected final DomainResultAssembler<?>	keyAssembler
protected final boolean	keyIsEager
protected final InitializerParent<?>	parent
protected final ToOneAttributeMapping	toOneMapping

Fields inherited from class org.hibernate.sql.results.graph.internal.AbstractInitializer

initializerId

Fields inherited from interface org.hibernate.sql.results.graph.Initializer

EMPTY_ARRAY

Constructor Summary

Constructors

Constructor	Description
EntitySelectFetchInitializer(InitializerParent<?> parent, ToOneAttributeMapping toOneMapping, NavigablePath fetchedNavigable, EntityPersister concreteDescriptor, DomainResult<?> keyResult, boolean affectedByFilter, AssemblerCreationState creationState)

Method Summary

Modifier and Type	Method	Description
protected InitializerData	createInitializerData(RowProcessingState rowProcessingState)
protected void	forEachSubInitializer(BiConsumer<Initializer<?>,RowProcessingState> consumer, InitializerData data)
EntityPersister	getConcreteDescriptor(Data data)
EntityPersister	getEntityDescriptor()	Get the descriptor for the type of entity being initialized
@Nullable Object	getEntityIdentifier(Data data)
ModelPart	getInitializedPart()
DomainResultAssembler<?>	getKeyAssembler()
NavigablePath	getNavigablePath()
@Nullable InitializerParent<?>	getParent()	Returns the parent Initializer or null if this is a result initializer.
boolean	hasLazySubInitializers()	Indicates whether this initializer has sub-initializers which are lazy.
protected void	initialize(EntitySelectFetchInitializer.EntitySelectFetchInitializerData data)
void	initializeInstance(Data data)	Step 3 - Initialize the state of the instance resolved in Initializer.resolveInstance(Data) from the current row values.
void	initializeInstanceFromParent(Object parentInstance, Data data)	Step 3.1 - Initialize the state of the instance as extracted from the given parentInstance.
boolean	isEager()	Indicates whether calling resolve is needed when the object for this initializer is initialized already.
boolean	isPartOfKey()	Indicates whether this initializer is part of a key i.e.
boolean	isResultInitializer()	Indicates if this is a result or fetch initializer.
void	resolveFromPreviousRow(Data data)	Step 1.2 - Special variant of Initializer.resolveKey(InitializerData) that allows the reuse of key value and instance value from the previous row.
void	resolveInstance(Data data)	Step 2.1 - Using the key resolved in Initializer.resolveKey(Data), resolve the instance (of the thing initialized) to use for the current row.
void	resolveInstance(Object instance, Data data)	Step 2.2 - Use the given instance as resolved instance for this initializer.
void	resolveState(EntitySelectFetchInitializer.EntitySelectFetchInitializerData data)
String	toString()

Methods inherited from class org.hibernate.sql.results.graph.internal.AbstractInitializer

finishUpRow, getData, resolveKey, startLoading

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.hibernate.sql.results.graph.entity.EntityInitializer

asEntityInitializer, getConcreteDescriptor, getEntityIdentifier, getTargetInstance, getTargetInstance, isEntityInitializer, resetResolvedEntityRegistrations, resolveEntityKeyOnly

Methods inherited from interface org.hibernate.sql.results.graph.Initializer

asCollectionInitializer, asEmbeddableInitializer, endLoading, findOwningEntityInitializer, finishUpRow, getData, getResolvedInstance, getResolvedInstance, initializeInstance, initializeInstanceFromParent, isCollectionInitializer, isEmbeddableInitializer, isLazyCapable, resolveFromPreviousRow, resolveInstance, resolveInstance, resolveKey, resolveKey, resolveState, startLoading

Field Details

parent

protected final InitializerParent<?> parent

concreteDescriptor

protected final EntityPersister concreteDescriptor

keyAssembler

protected final DomainResultAssembler<?> keyAssembler

toOneMapping

protected final ToOneAttributeMapping toOneMapping

affectedByFilter

protected final boolean affectedByFilter

keyIsEager

protected final boolean keyIsEager

hasLazySubInitializer

protected final boolean hasLazySubInitializer

Constructor Details

EntitySelectFetchInitializer

public EntitySelectFetchInitializer(InitializerParent<?> parent,
 ToOneAttributeMapping toOneMapping,
 NavigablePath fetchedNavigable,
 EntityPersister concreteDescriptor,
 DomainResult<?> keyResult,
 boolean affectedByFilter,
 AssemblerCreationState creationState)

Method Details

createInitializerData

protected InitializerData createInitializerData(RowProcessingState rowProcessingState)

Specified by:

createInitializerData in class AbstractInitializer<Data extends EntitySelectFetchInitializer.EntitySelectFetchInitializerData>

getInitializedPart

public ModelPart getInitializedPart()

Specified by:

getInitializedPart in interface Initializer<Data extends EntitySelectFetchInitializer.EntitySelectFetchInitializerData>

getParent

public @Nullable InitializerParent<?> getParent()

Description copied from interface: Initializer

Returns the parent Initializer or null if this is a result initializer.

Specified by:

getParent in interface Initializer<Data extends EntitySelectFetchInitializer.EntitySelectFetchInitializerData>

getNavigablePath

public NavigablePath getNavigablePath()

Specified by:

getNavigablePath in interface Initializer<Data extends EntitySelectFetchInitializer.EntitySelectFetchInitializerData>

resolveFromPreviousRow

public void resolveFromPreviousRow(Data data)

Description copied from interface: Initializer

Step 1.2 - Special variant of Initializer.resolveKey(InitializerData) that allows the reuse of key value and instance value from the previous row.

Specified by:

resolveFromPreviousRow in interface Initializer<Data extends EntitySelectFetchInitializer.EntitySelectFetchInitializerData>

resolveInstance

public void resolveInstance(Data data)

Description copied from interface: Initializer

Step 2.1 - Using the key resolved in Initializer.resolveKey(Data), resolve the instance (of the thing initialized) to use for the current row.

After this point, the initializer knows the entity/collection/component instance for the current row based on the resolved key. If the resolving was successful, Initializer.getResolvedInstance(RowProcessingState) will return that instance.

Specified by:

resolveInstance in interface Initializer<Data extends EntitySelectFetchInitializer.EntitySelectFetchInitializerData>

resolveInstance

public void resolveInstance(Object instance,
 Data data)

Description copied from interface: Initializer

Step 2.2 - Use the given instance as resolved instance for this initializer. Initializers are supposed to recursively call this method for sub-initializers.

This alternative initialization protocol is used when a parent instance was already part of the persistence context.

Specified by:

resolveInstance in interface Initializer<Data extends EntitySelectFetchInitializer.EntitySelectFetchInitializerData>

initializeInstance

public void initializeInstance(Data data)

Description copied from interface: Initializer

Step 3 - Initialize the state of the instance resolved in Initializer.resolveInstance(Data) from the current row values.

All resolved state for the current row is injected into the resolved instance

Specified by:

initializeInstance in interface Initializer<Data extends EntitySelectFetchInitializer.EntitySelectFetchInitializerData>

Overrides:

initializeInstance in class AbstractInitializer<Data extends EntitySelectFetchInitializer.EntitySelectFetchInitializerData>

initialize

protected void initialize(EntitySelectFetchInitializer.EntitySelectFetchInitializerData data)

initializeInstanceFromParent

public void initializeInstanceFromParent(Object parentInstance,
 Data data)

Description copied from interface: Initializer

Step 3.1 - Initialize the state of the instance as extracted from the given parentInstance. Extraction can be done with the Initializer.getInitializedPart(). Initializers are supposed to recursively call this method for sub-initializers.

This alternative initialization protocol is used for shallow query cache hits, in which case there is no data available in the JdbcValuesCacheHit to initialize potentially lazy associations.

Specified by:

initializeInstanceFromParent in interface Initializer<Data extends EntitySelectFetchInitializer.EntitySelectFetchInitializerData>

forEachSubInitializer

protected void forEachSubInitializer(BiConsumer<Initializer<?>,RowProcessingState> consumer,
 InitializerData data)

Specified by:

forEachSubInitializer in class AbstractInitializer<Data extends EntitySelectFetchInitializer.EntitySelectFetchInitializerData>

getEntityDescriptor

public EntityPersister getEntityDescriptor()

Description copied from interface: EntityInitializer

Get the descriptor for the type of entity being initialized

Specified by:

getEntityDescriptor in interface EntityInitializer<Data extends EntitySelectFetchInitializer.EntitySelectFetchInitializerData>

getConcreteDescriptor

public EntityPersister getConcreteDescriptor(Data data)

Specified by:

getConcreteDescriptor in interface EntityInitializer<Data extends EntitySelectFetchInitializer.EntitySelectFetchInitializerData>

getEntityIdentifier

public @Nullable Object getEntityIdentifier(Data data)

Specified by:

getEntityIdentifier in interface EntityInitializer<Data extends EntitySelectFetchInitializer.EntitySelectFetchInitializerData>

isPartOfKey

public boolean isPartOfKey()

Description copied from interface: Initializer

Indicates whether this initializer is part of a key i.e. entity identifier, foreign key or collection key.

Specified by:

isPartOfKey in interface Initializer<Data extends EntitySelectFetchInitializer.EntitySelectFetchInitializerData>

isEager

public boolean isEager()

Description copied from interface: Initializer

Indicates whether calling resolve is needed when the object for this initializer is initialized already.

Specified by:

isEager in interface Initializer<Data extends EntitySelectFetchInitializer.EntitySelectFetchInitializerData>

resolveState

public void resolveState(EntitySelectFetchInitializer.EntitySelectFetchInitializerData data)

Specified by:

resolveState in interface Initializer<Data extends EntitySelectFetchInitializer.EntitySelectFetchInitializerData>

hasLazySubInitializers

public boolean hasLazySubInitializers()

Description copied from interface: Initializer

Indicates whether this initializer has sub-initializers which are lazy.

Specified by:

hasLazySubInitializers in interface Initializer<Data extends EntitySelectFetchInitializer.EntitySelectFetchInitializerData>

isResultInitializer

public boolean isResultInitializer()

Description copied from interface: Initializer

Indicates if this is a result or fetch initializer.

Specified by:

isResultInitializer in interface Initializer<Data extends EntitySelectFetchInitializer.EntitySelectFetchInitializerData>

toString

public String toString()

Overrides:

toString in class Object

getKeyAssembler

public DomainResultAssembler<?> getKeyAssembler()