org.hibernate.search.engine.search.dsl.projection

Interface SearchProjectionFactoryExtensionIfSupportedMoreStep<P,R,E>

Type Parameters:

R - The type of entity references in the parent SearchProjectionFactory.

E - The type of entities in the parent SearchProjectionFactory.

P - The resulting projection type.

All Superinterfaces:

SearchProjectionFactoryExtensionIfSupportedStep<P,R,E>

public interface SearchProjectionFactoryExtensionIfSupportedMoreStep<P,R,E>
extends SearchProjectionFactoryExtensionIfSupportedStep<P,R,E>

The second and later step when attempting to apply multiple extensions to a SearchProjectionFactory.

See Also:

SearchProjectionFactory.extension()

Method Summary

Modifier and Type	Method and Description
ProjectionFinalStep<P>	orElse(Function<SearchProjectionFactory<R,E>,? extends ProjectionFinalStep<P>> projectionContributor) If no extension passed to SearchProjectionFactoryExtensionIfSupportedStep.ifSupported(SearchProjectionFactoryExtension, Function) was supported so far, apply the given function to the current (non-extended) SearchProjectionFactory; otherwise return the projection created in the first succeeding ifSupported call.
ProjectionFinalStep<P>	orElseFail() If no extension passed to SearchProjectionFactoryExtensionIfSupportedStep.ifSupported(SearchProjectionFactoryExtension, Function) was supported so far, throw an exception; otherwise return the projection created in the first succeeding ifSupported call.

Methods inherited from interface org.hibernate.search.engine.search.dsl.projection.SearchProjectionFactoryExtensionIfSupportedStep

ifSupported

Method Detail

orElse

ProjectionFinalStep<P> orElse(Function<SearchProjectionFactory<R,E>,? extends ProjectionFinalStep<P>> projectionContributor)

If no extension passed to SearchProjectionFactoryExtensionIfSupportedStep.ifSupported(SearchProjectionFactoryExtension, Function) was supported so far, apply the given function to the current (non-extended) SearchProjectionFactory; otherwise return the projection created in the first succeeding ifSupported call.

Parameters:

projectionContributor - A function called if no extension was successfully applied; it will use the (non-extended) projection factory passed in parameter to create a projection, returning the final step in the projection DSL. Should generally be a lambda expression.

Returns:

The created projection.

orElseFail

ProjectionFinalStep<P> orElseFail()

If no extension passed to SearchProjectionFactoryExtensionIfSupportedStep.ifSupported(SearchProjectionFactoryExtension, Function) was supported so far, throw an exception; otherwise return the projection created in the first succeeding ifSupported call.

Returns:

The created projection.

Throws:

SearchException - If none of the previously passed extensions was supported.