ContainerExtractor (Hibernate Search Mapper - POJO Base 6.0.0.Beta9 API)

Type Parameters:

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

V - The type of values extracted by this extractor.
```
@Incubating
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
  
  All Methods Instance Methods Abstract Methods Default Methods
  Modifier and Type Method Description
  
  Stream<V> extract(C container)
  
  default boolean multiValued()

- 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.
  - multiValued
```
default boolean multiValued()
```
    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.