Package org.hibernate.search.mapper.pojo.search.definition.binding

Interface ProjectionBindingContext

All Known Implementing Classes:

ProjectionBindingContextImpl

@Incubating
public interface ProjectionBindingContext

The context passed to ProjectionBinder.bind(ProjectionBindingContext).

See Also:

ProjectionBinder.bind(ProjectionBindingContext)

Method Summary

Modifier and Type	Method	Description
BeanResolver	beanResolver()
PojoModelConstructorParameter	constructorParameter()
<T> BeanHolder<? extends ProjectionDefinition<T>>	createCompositeDefinition(Class<T> projectedType)
<T> BeanHolder<? extends ProjectionDefinition<T>>	createObjectDefinition(String fieldPath, Class<T> projectedType, TreeFilterDefinition filter)
<T> BeanHolder<? extends ProjectionDefinition<List<T>>>	createObjectDefinitionMulti(String fieldPath, Class<T> projectedType, TreeFilterDefinition filter)
<P> void	definition(Class<P> expectedValueType, BeanHolder<? extends ProjectionDefinition<? extends P>> definitionHolder)	Binds the constructorParameter() to the given projection definition.
<P> void	definition(Class<P> expectedValueType, ProjectionDefinition<? extends P> definition)	Binds the constructorParameter() to the given projection definition.
boolean	isIncluded(String fieldPath)
Optional<? extends ProjectionBindingMultiContext>	multi()	Inspects the type of the constructorParameter() to determine if it may be bound to a multi-valued projection.
Object	param(String name)
Optional<Object>	paramOptional(String name)

Method Detail

definition

<P> void definition(Class<P> expectedValueType,
                    ProjectionDefinition<? extends P> definition)

Binds the constructorParameter() to the given projection definition.

Type Parameters:

P - The type of values returned by the projection.

Parameters:

expectedValueType - The expected type of the constructorParameter(), which must be compatible with the given projection definition. Hibernate Search will check that these expectations are met, and throw an exception if they are not.

definition - A definition of the projection to bind to the constructorParameter().

definition

<P> void definition(Class<P> expectedValueType,
                    BeanHolder<? extends ProjectionDefinition<? extends P>> definitionHolder)

Binds the constructorParameter() to the given projection definition.

Type Parameters:

P - The type of values returned by the projection.

Parameters:

expectedValueType - The expected type of the constructorParameter(), which must be compatible with the given projection definition. Hibernate Search will check that these expectations are met, and throw an exception if they are not.

definitionHolder - A BeanHolder containing the definition of the projection to bind to the constructorParameter().

multi

@Incubating
Optional<? extends ProjectionBindingMultiContext> multi()

Inspects the type of the constructorParameter() to determine if it may be bound to a multi-valued projection.

Returns:

An optional containing a context that can be used to bind a projection if the type of the constructorParameter() can be bound to a multi-valued projection; an empty optional otherwise.

beanResolver

BeanResolver beanResolver()

Returns:

A bean provider, allowing the retrieval of beans, including CDI/Spring DI beans when in the appropriate environment.

constructorParameter

@Incubating
PojoModelConstructorParameter constructorParameter()

Returns:

An entry point allowing to inspect the constructor parameter being bound to a projection.

param

Object param(String name)

Parameters:

name - The name of the parameter.

Returns:

The value provided for this parameter.

Throws:

SearchException - If no value was provided for this parameter.

See Also:

PropertyBinderRef.params(), MethodParameterMappingStep.projection(BeanReference, Map)

paramOptional

Optional<Object> paramOptional(String name)

Parameters:

name - The name of the parameter.

Returns:

An optional containing the value provided for this parameter, or Optional.empty() if no value was provided for this parameter.

See Also:

PropertyBinderRef.params(), MethodParameterMappingStep.projection(BeanReference, Map)

createObjectDefinition

@Incubating
<T> BeanHolder<? extends ProjectionDefinition<T>> createObjectDefinition(String fieldPath,
                                                                         Class<T> projectedType,
                                                                         TreeFilterDefinition filter)

Parameters:

fieldPath - The (relative) path to an object field in the indexed document.

projectedType - A type expected to have a corresponding projection mapping (e.g. using ProjectionConstructor).

filter - The filter to apply to determine which nested index field projections should be included in the projection. See ObjectProjection.includePaths(), ObjectProjection.excludePaths(), ObjectProjection.includeDepth(), ...

Returns:

A single-valued object projection definition for the given type.

Throws:

SearchException - If mapping the given type to a projection definition fails.

See Also:

SearchProjectionFactory.object(String), CompositeProjectionInnerStep.as(Class)

createObjectDefinitionMulti

@Incubating
<T> BeanHolder<? extends ProjectionDefinition<List<T>>> createObjectDefinitionMulti(String fieldPath,
                                                                                    Class<T> projectedType,
                                                                                    TreeFilterDefinition filter)

Parameters:

fieldPath - The (relative) path to an object field in the indexed document.

projectedType - A type expected to have a corresponding projection mapping (e.g. using ProjectionConstructor).

filter - The filter to apply to determine which nested index field projections should be included in the projection. See ObjectProjection.includePaths(), ObjectProjection.excludePaths(), ObjectProjection.includeDepth(), ...

Returns:

A multi-valued object projection definition for the given type.

Throws:

SearchException - If mapping the given type to a projection definition fails.

See Also:

SearchProjectionFactory.object(String), CompositeProjectionInnerStep.as(Class)

createCompositeDefinition

@Incubating
<T> BeanHolder<? extends ProjectionDefinition<T>> createCompositeDefinition(Class<T> projectedType)

Parameters:

projectedType - A type expected to have a corresponding projection mapping (e.g. using ProjectionConstructor)

Returns:

A composite projection definition for the given type.

Throws:

SearchException - If mapping the given type to a projection definition fails.

See Also:

SearchProjectionFactory.composite(), CompositeProjectionInnerStep.as(Class)

isIncluded

boolean isIncluded(String fieldPath)

Parameters:

fieldPath - The (relative) path to an object field in the indexed document.

Returns:

true if the field with the given path is included according to surrounding filters (see ObjectProjection.includePaths(), ObjectProjection.excludePaths(), ObjectProjection.includeDepth(), ...). false otherwise. Projections on excluded fields should be replaced with a constant projection returning null or an empty list, as appropriate.