org.hibernate.search.mapper.pojo.extractor

Interface ContainerExtractor<C,V>

Type Parameters:

C - The type of containers this extractor can extract values from.

V - The type of values extracted by this extractor.

public interface ContainerExtractor<C,V>

An extractor of values from a container.

Container extractors tell Hibernate Search how to extract values from object properties: no extractor would mean using the property value directly, a collection element extractor would extract each element of a collection, a map keys extractor would extract each key of a map, etc.

See Also:

ContainerExtractorPath, BuiltinContainerExtractors

Method Summary

Modifier and Type	Method and Description
Stream<V>	extract(C container)
default boolean	isMultiValued()

Method Detail

extract

Stream<V> extract(C container)

Parameters:

container - A container to extract values from.

Returns:

A stream of values extracted from the given container. The stream will be BaseStream.close() by the caller.

isMultiValued

default boolean isMultiValued()

Returns:

true if this extractor's extract(Object) method may return streams with more than one value. false if it will never return streams with more than one value.