Package org.hibernate.search.backend.lucene.search.projection.impl

Class LuceneFieldProjection<F,V,P,T>

java.lang.Object

org.hibernate.search.backend.lucene.search.projection.impl.LuceneFieldProjection<F,V,P,T>

Type Parameters:

F - The type of individual field values obtained from the backend (before conversion).

V - The type of individual field values after conversion.

P - The type of the final projection result representing accumulated values of type V.

All Implemented Interfaces:

LuceneSearchProjection<P>, SearchProjection<P>

public class LuceneFieldProjection<F,V,P,T>
extends Object

A projection on the values of an index field.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	LuceneFieldProjection.Factory<F,E>

Nested classes/interfaces inherited from interface org.hibernate.search.backend.lucene.search.projection.impl.LuceneSearchProjection

LuceneSearchProjection.Extractor<E,P>

Field Summary

Fields inherited from interface org.hibernate.search.backend.lucene.search.projection.impl.LuceneSearchProjection

log

Method Summary

Modifier and Type	Method	Description
final Set<String>	indexNames()
LuceneFieldProjection<F,V,P,T>.org.hibernate.search.backend.lucene.search.projection.impl.LuceneFieldProjection.ValueFieldExtractor<?>	request(ProjectionRequestContext context)	Request the collection of per-document data that will be used in LuceneSearchProjection.Extractor.values(ProjectionExtractContext), making sure that the requirements for this projection are met.
String	toString()

Methods inherited from class java.lang.Object

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

Method Details

toString

public String toString()

Overrides:

toString in class Object

request

public LuceneFieldProjection<F,V,P,T>.org.hibernate.search.backend.lucene.search.projection.impl.LuceneFieldProjection.ValueFieldExtractor<?> request(ProjectionRequestContext context)

Description copied from interface: LuceneSearchProjection

Request the collection of per-document data that will be used in LuceneSearchProjection.Extractor.values(ProjectionExtractContext), making sure that the requirements for this projection are met.

Parameters:

context - An execution context for the request.

Returns:

An LuceneSearchProjection.Extractor, to extract the result of the projection from the Elasticsearch response.

indexNames

public final Set<String> indexNames()

Specified by:

indexNames in interface LuceneSearchProjection<P>