Package org.hibernate.search.backend.lucene.search.query.dsl.impl

Class LuceneSearchQuerySelectStepImpl<R,E,LOS>

java.lang.Object

org.hibernate.search.engine.search.query.dsl.spi.AbstractSearchQuerySelectStep<LuceneSearchQueryOptionsStep<E,LOS>,R,E,LOS,LuceneSearchProjectionFactory<R,E>,LuceneSearchPredicateFactory>

org.hibernate.search.backend.lucene.search.query.dsl.impl.LuceneSearchQuerySelectStepImpl<R,E,LOS>

All Implemented Interfaces:

LuceneSearchQuerySelectStep<R,E,LOS>, LuceneSearchQueryWhereStep<E,LOS>, SearchQuerySelectStep<LuceneSearchQueryOptionsStep<E,LOS>,R,E,LOS,LuceneSearchProjectionFactory<R,E>,LuceneSearchPredicateFactory>, SearchQueryWhereStep<LuceneSearchQueryOptionsStep<E,LOS>,E,LOS,LuceneSearchPredicateFactory>

public class LuceneSearchQuerySelectStepImpl<R,E,LOS>
extends AbstractSearchQuerySelectStep<LuceneSearchQueryOptionsStep<E,LOS>,R,E,LOS,LuceneSearchProjectionFactory<R,E>,LuceneSearchPredicateFactory>
implements LuceneSearchQuerySelectStep<R,E,LOS>

Constructor Summary

Constructors

Constructor	Description
LuceneSearchQuerySelectStepImpl(LuceneSearchQueryIndexScope<?> scope, BackendSessionContext sessionContext, SearchLoadingContextBuilder<E,LOS> loadingContextBuilder)

Method Summary

Modifier and Type	Method	Description
protected SearchLoadingContextBuilder<E,LOS>	loadingContextBuilder()
protected LuceneSearchQueryIndexScope<?>	scope()
<P> LuceneSearchQueryWhereStep<P,LOS>	select(Class<P> objectClass)	Select an object projection as a representation of the search hit for each matching document.
<P> LuceneSearchQueryWhereStep<P,LOS>	select(Function<? super LuceneSearchProjectionFactory<R,E>,? extends ProjectionFinalStep<P>> projectionContributor)	Select a given projection as a representation of the search hit for each matching document.
LuceneSearchQueryWhereStep<List<?>,LOS>	select(SearchProjection<?>... projections)	Select a list of projections as a representation of the search hit for each matching document.
<P> LuceneSearchQueryWhereStep<P,LOS>	select(SearchProjection<P> projection)	Select a projection as a representation of the search hit for each matching document.
LuceneSearchQueryWhereStep<E,LOS>	selectEntity()	Select the entity was originally indexed as a representation of the search hit for each matching document.
LuceneSearchQueryWhereStep<R,LOS>	selectEntityReference()	Select a reference to the entity that was originally indexed as a representation of the search hit for each matching document.
protected BackendSessionContext	sessionContext()
LuceneSearchQueryOptionsStep<E,LOS>	where(BiConsumer<? super LuceneSearchPredicateFactory,? super SimpleBooleanPredicateClausesCollector<?>> predicateContributor)	Set the predicate for this query.
LuceneSearchQueryOptionsStep<E,LOS>	where(Function<? super LuceneSearchPredicateFactory,? extends PredicateFinalStep> predicateContributor)	Set the predicate for this query.
LuceneSearchQueryOptionsStep<E,LOS>	where(SearchPredicate predicate)	Set the predicate for this query.

Methods inherited from class org.hibernate.search.engine.search.query.dsl.spi.AbstractSearchQuerySelectStep

extension

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.hibernate.search.engine.search.query.dsl.SearchQuerySelectStep

extension

Constructor Details

LuceneSearchQuerySelectStepImpl

public LuceneSearchQuerySelectStepImpl(LuceneSearchQueryIndexScope<?> scope,
 BackendSessionContext sessionContext,
 SearchLoadingContextBuilder<E,LOS> loadingContextBuilder)

Method Details

selectEntity

public LuceneSearchQueryWhereStep<E,LOS> selectEntity()

Description copied from interface: SearchQuerySelectStep

Select the entity was originally indexed as a representation of the search hit for each matching document.

The entity will be loaded directly from its original source (relational database, ...).

Specified by:

selectEntity in interface LuceneSearchQuerySelectStep<R,E,LOS>

Specified by:

selectEntity in interface SearchQuerySelectStep<LuceneSearchQueryOptionsStep<E,LOS>,R,E,LOS,LuceneSearchProjectionFactory<R,E>,LuceneSearchPredicateFactory>

Returns:

The next step.

See Also:

• SearchQueryWhereStep

selectEntityReference

public LuceneSearchQueryWhereStep<R,LOS> selectEntityReference()

Description copied from interface: SearchQuerySelectStep

Select a reference to the entity that was originally indexed as a representation of the search hit for each matching document.

Entity references are instances of type EntityReference, but some mappers may expose a different type for backwards compatibility reasons. EntityReference should be favored wherever possible as mapper-specific types will eventually be removed.

Specified by:

selectEntityReference in interface LuceneSearchQuerySelectStep<R,E,LOS>

Specified by:

selectEntityReference in interface SearchQuerySelectStep<LuceneSearchQueryOptionsStep<E,LOS>,R,E,LOS,LuceneSearchProjectionFactory<R,E>,LuceneSearchPredicateFactory>

Returns:

The next step.

See Also:

• SearchQueryWhereStep

select

public <P> LuceneSearchQueryWhereStep<P,LOS> select(Class<P> objectClass)

Description copied from interface: SearchQuerySelectStep

Select an object projection as a representation of the search hit for each matching document.

Specified by:

select in interface LuceneSearchQuerySelectStep<R,E,LOS>

Specified by:

select in interface SearchQuerySelectStep<LuceneSearchQueryOptionsStep<E,LOS>,R,E,LOS,LuceneSearchProjectionFactory<R,E>,LuceneSearchPredicateFactory>

Type Parameters:

P - The resulting type of the projection.

Parameters:

objectClass - The type of objects returned by the projection. The class is expected to be mapped (generally through annotations) in such a way that it defines the inner projections.

Returns:

The next step.

See Also:

• SearchQueryWhereStep

select

public <P> LuceneSearchQueryWhereStep<P,LOS> select(Function<? super LuceneSearchProjectionFactory<R,E>,? extends ProjectionFinalStep<P>> projectionContributor)

Description copied from interface: SearchQuerySelectStep

Select a given projection as a representation of the search hit for each matching document.

Specified by:

select in interface LuceneSearchQuerySelectStep<R,E,LOS>

Specified by:

select in interface SearchQuerySelectStep<LuceneSearchQueryOptionsStep<E,LOS>,R,E,LOS,LuceneSearchProjectionFactory<R,E>,LuceneSearchPredicateFactory>

Type Parameters:

P - The resulting type of the projection.

Parameters:

projectionContributor - A function that will use the factory passed in parameter to create a projection, returning the final step in the projection DSL. Should generally be a lambda expression.

Returns:

The next step.

See Also:

• SearchQueryWhereStep

select

public <P> LuceneSearchQueryWhereStep<P,LOS> select(SearchProjection<P> projection)

Description copied from interface: SearchQuerySelectStep

Select a projection as a representation of the search hit for each matching document.

Specified by:

select in interface LuceneSearchQuerySelectStep<R,E,LOS>

Specified by:

select in interface SearchQuerySelectStep<LuceneSearchQueryOptionsStep<E,LOS>,R,E,LOS,LuceneSearchProjectionFactory<R,E>,LuceneSearchPredicateFactory>

Type Parameters:

P - The resulting type of the projection.

Parameters:

projection - A previously-created SearchProjection object.

Returns:

The next step.

See Also:

• SearchQueryWhereStep

select

public LuceneSearchQueryWhereStep<List<?>,LOS> select(SearchProjection<?>... projections)

Description copied from interface: SearchQuerySelectStep

Select a list of projections as a representation of the search hit for each matching document.

Note that using this method will force you to use casts when consuming the results, since the returned lists are not typed (List<?> instead of List<T>). You can replace calls to this method advantageously with calls to SearchQuerySelectStep.select(Function) defining a composite projection.

Specified by:

select in interface LuceneSearchQuerySelectStep<R,E,LOS>

Specified by:

select in interface SearchQuerySelectStep<LuceneSearchQueryOptionsStep<E,LOS>,R,E,LOS,LuceneSearchProjectionFactory<R,E>,LuceneSearchPredicateFactory>

Parameters:

projections - A list of previously-created SearchProjection objects.

Returns:

The next step.

See Also:

• SearchProjectionFactory.composite(SearchProjection[])
• SearchQueryWhereStep

where

public LuceneSearchQueryOptionsStep<E,LOS> where(SearchPredicate predicate)

Description copied from interface: SearchQueryWhereStep

Set the predicate for this query.

Specified by:

where in interface SearchQueryWhereStep<LuceneSearchQueryOptionsStep<E,LOS>,E,LOS,LuceneSearchPredicateFactory>

Parameters:

predicate - A SearchPredicate object obtained from the search scope.

Returns:

The next step.

where

public LuceneSearchQueryOptionsStep<E,LOS> where(Function<? super LuceneSearchPredicateFactory,? extends PredicateFinalStep> predicateContributor)

Description copied from interface: SearchQueryWhereStep

Set the predicate for this query.

Specified by:

where in interface SearchQueryWhereStep<LuceneSearchQueryOptionsStep<E,LOS>,E,LOS,LuceneSearchPredicateFactory>

Parameters:

predicateContributor - A function that will use the factory passed in parameter to create a predicate, returning the final step in the predicate DSL. Should generally be a lambda expression.

Returns:

The next step.

where

public LuceneSearchQueryOptionsStep<E,LOS> where(BiConsumer<? super LuceneSearchPredicateFactory,? super SimpleBooleanPredicateClausesCollector<?>> predicateContributor)

Description copied from interface: SearchQueryWhereStep

Set the predicate for this query.

Specified by:

where in interface SearchQueryWhereStep<LuceneSearchQueryOptionsStep<E,LOS>,E,LOS,LuceneSearchPredicateFactory>

Parameters:

predicateContributor - A consumer that will use the factory passed in parameter to create predicates and add them as clauses to the collector passed in parameter. Should generally be a lambda expression. The resulting root predicate will have to match all clauses.

Returns:

The next step.

See Also:

• SimpleBooleanPredicateClausesCollector

scope

protected LuceneSearchQueryIndexScope<?> scope()

Specified by:

scope in class AbstractSearchQuerySelectStep<LuceneSearchQueryOptionsStep<E,LOS>,R,E,LOS,LuceneSearchProjectionFactory<R,E>,LuceneSearchPredicateFactory>

sessionContext

protected BackendSessionContext sessionContext()

Specified by:

sessionContext in class AbstractSearchQuerySelectStep<LuceneSearchQueryOptionsStep<E,LOS>,R,E,LOS,LuceneSearchProjectionFactory<R,E>,LuceneSearchPredicateFactory>

loadingContextBuilder

protected SearchLoadingContextBuilder<E,LOS> loadingContextBuilder()

Specified by:

loadingContextBuilder in class AbstractSearchQuerySelectStep<LuceneSearchQueryOptionsStep<E,LOS>,R,E,LOS,LuceneSearchProjectionFactory<R,E>,LuceneSearchPredicateFactory>