ContainerExtraction (Hibernate Search Mapper - POJO Base 6.0.0.CR1 API)

```
@Documented
@Target({})
@Retention(RUNTIME)
public @interface ContainerExtraction
```
A definition of container value extractors to be applied to a property, allowing reference to a specific value of a container property.
For instance, on a property of type Map<EntityA, EntityB>, @ContainerExtraction(@ContainerExtractor(BuiltinContainerExtractors.MAP_KEY)) would point to the map keys (of type EntityA), while @ContainerExtraction(@ContainerExtractor(BuiltinContainerExtractors.MAP_VALUE)) would point to the map values (of type EntityB).
By default, if no attributes are set on this annotation, Hibernate Search will try to apply a set of extractors for common types (Iterable, Collection, Optional, ...) and use the first one that works. To prevent Hibernate Search from applying any extractor, use @ContainerExtraction(extract = ContainerExtract.NO)

- Optional Element Summary
  
  Optional Elements
  Modifier and Type Optional Element Description
  
  ContainerExtract extract
  
  String[] value

- Element Detail
  - extract
```
ContainerExtract extract
```
    Returns:
    
    Whether values are extracted from containers or not.
    
    See Also:
    
    ContainerExtract
    
    Default:
    
    org.hibernate.search.mapper.pojo.extractor.mapping.annotation.ContainerExtract.DEFAULT
- - value
```
String[] value
```
    Returns:
    
    An array of container value extractor names. Setting this together with extract = ContainerExtract.NO will trigger an exception.
    
    See Also:
    
    BuiltinContainerExtractors
    
    Default:
    
    {}