ContainerExtractor (Hibernate Search Mapper - POJO Base 6.1.7.Final 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
`<T,C2> void`	`extract(C container, ValueProcessor<T,? super V,C2> perValueProcessor, T target, C2 context, ContainerExtractionContext extractionContext)`
`default boolean`	`multiValued()`

- Method Detail
  - extract
```
<T,C2> void extract(C container,
                          ValueProcessor<T,? super V,C2> perValueProcessor,
                          T target,
                          C2 context,
                          ContainerExtractionContext extractionContext)
```
    Type Parameters:
    
    T - The type of the target of the perValueProcessor, i.e. whatever it is supposed to push the result of its processing to.
    
    C2 - The type of the context of the perValueProcessor, i.e. whatever information it needs that is independent from the target or value.
    
    Parameters:
    
    container - A container to extract values from.
    
    perValueProcessor - A processor for values extracted from the container.
    
    target - The target to pass to the perValueProcessor.
    
    context - The context to pass to the perValueProcessor.
    
    extractionContext - A context for use by the container extractor itself.
  - multiValued
```
default boolean multiValued()
```
    Returns:
    
    true if this extractor's extract(Object, ValueProcessor, Object, Object, ContainerExtractionContext) method may call the consumer multiple times. false if it will always call the consumer either zero or one time for a given container.