Package org.hibernate.loader.ast.internal

Class AbstractNaturalIdLoader<T>

java.lang.Object

org.hibernate.loader.ast.internal.AbstractNaturalIdLoader<T>

All Implemented Interfaces:

EntityLoader, Loader, MultiKeyLoader, NaturalIdLoader<T>

Direct Known Subclasses:

CompoundNaturalIdLoader, SimpleNaturalIdLoader

public abstract class AbstractNaturalIdLoader<T>
extends Object
implements NaturalIdLoader<T>

Base support for NaturalIdLoader implementations

Constructor Summary

Constructors

Constructor	Description
AbstractNaturalIdLoader(NaturalIdMapping naturalIdMapping, EntityMappingType entityDescriptor)

Method Summary

Modifier and Type	Method	Description
protected abstract void	applyNaturalIdRestriction(Object bindValue, TableGroup rootTableGroup, Consumer<Predicate> predicateConsumer, BiConsumer<JdbcParameter,JdbcParameterBinding> jdbcParameterConsumer, LoaderSqlAstCreationState sqlAstCreationState, SharedSessionContractImplementor session)	Apply restriction necessary to match the given natural-id value.
protected EntityMappingType	entityDescriptor()
EntityMappingType	getLoadable()	The value-mapping loaded by this loader
T	load(Object naturalIdValue, NaturalIdLoadOptions options, SharedSessionContractImplementor session)	Perform the load of the entity by its natural-id
protected NaturalIdMapping	naturalIdMapping()
protected Expression	resolveColumnReference(TableGroup rootTableGroup, SelectableMapping selectableMapping, SqlExpressionResolver sqlExpressionResolver, SessionFactoryImplementor sessionFactory)	Helper to resolve ColumnReferences
Object	resolveIdToNaturalId(Object id, SharedSessionContractImplementor session)	Resolve the natural-id value(s) from an id
Object	resolveNaturalIdToId(Object naturalIdValue, SharedSessionContractImplementor session)	Resolve the id from natural-id value
protected <L> L	selectByNaturalId(Object bindValue, NaturalIdLoadOptions options, BiFunction<TableGroup,LoaderSqlAstCreationState,DomainResult<?>> domainResultProducer, LoaderSqlAstCreationState.FetchProcessor fetchProcessor, Function<Boolean,Long> statementStartHandler, BiConsumer<Object,Long> statementCompletionHandler, SharedSessionContractImplementor session)	Perform a select, restricted by natural-id, based on `domainResultProducer` and `fetchProcessor`

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractNaturalIdLoader

public AbstractNaturalIdLoader(NaturalIdMapping naturalIdMapping,
                               EntityMappingType entityDescriptor)

Method Detail

entityDescriptor

protected EntityMappingType entityDescriptor()

naturalIdMapping

protected NaturalIdMapping naturalIdMapping()

getLoadable

public EntityMappingType getLoadable()

Description copied from interface: Loader

The value-mapping loaded by this loader

Specified by:

getLoadable in interface EntityLoader

Specified by:

getLoadable in interface Loader

load

public T load(Object naturalIdValue,
              NaturalIdLoadOptions options,
              SharedSessionContractImplementor session)

Description copied from interface: NaturalIdLoader

Perform the load of the entity by its natural-id

Specified by:

load in interface NaturalIdLoader<T>

Parameters:

naturalIdValue - The natural-id to load. One of 2 forms accepted: * Single-value - valid for entities with a simple (single-valued) natural-id * Map - valid for any natural-id load. The map is each value keyed by the attribute name that the value corresponds to. Even though this form is allowed for simple natural-ids, the single value form should be used as it is more efficient

options - The options to apply to the load operation

session - The session into which the entity is being loaded

selectByNaturalId

protected <L> L selectByNaturalId(Object bindValue,
                                  NaturalIdLoadOptions options,
                                  BiFunction<TableGroup,LoaderSqlAstCreationState,DomainResult<?>> domainResultProducer,
                                  LoaderSqlAstCreationState.FetchProcessor fetchProcessor,
                                  Function<Boolean,Long> statementStartHandler,
                                  BiConsumer<Object,Long> statementCompletionHandler,
                                  SharedSessionContractImplementor session)

Perform a select, restricted by natural-id, based on `domainResultProducer` and `fetchProcessor`

applyNaturalIdRestriction

protected abstract void applyNaturalIdRestriction(Object bindValue,
                                                  TableGroup rootTableGroup,
                                                  Consumer<Predicate> predicateConsumer,
                                                  BiConsumer<JdbcParameter,JdbcParameterBinding> jdbcParameterConsumer,
                                                  LoaderSqlAstCreationState sqlAstCreationState,
                                                  SharedSessionContractImplementor session)

Apply restriction necessary to match the given natural-id value. Should apply any predicates to `predicateConsumer` as well and any parameter / binding pairs

resolveColumnReference

protected Expression resolveColumnReference(TableGroup rootTableGroup,
                                            SelectableMapping selectableMapping,
                                            SqlExpressionResolver sqlExpressionResolver,
                                            SessionFactoryImplementor sessionFactory)

Helper to resolve ColumnReferences

resolveNaturalIdToId

public Object resolveNaturalIdToId(Object naturalIdValue,
                                   SharedSessionContractImplementor session)

Description copied from interface: NaturalIdLoader

Resolve the id from natural-id value

Specified by:

resolveNaturalIdToId in interface NaturalIdLoader<T>

resolveIdToNaturalId

public Object resolveIdToNaturalId(Object id,
                                   SharedSessionContractImplementor session)

Description copied from interface: NaturalIdLoader

Resolve the natural-id value(s) from an id

Specified by:

resolveIdToNaturalId in interface NaturalIdLoader<T>