SourceExtractor (Spring Framework 5.2.12.RELEASE API)

All Known Implementing Classes:
NullSourceExtractor, PassThroughSourceExtractor
Functional Interface:
This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface SourceExtractor
```
Simple strategy allowing tools to control how source metadata is attached to the bean definition metadata.
Configuration parsers may provide the ability to attach source metadata during the parse phase. They will offer this metadata in a generic format which can be further modified by a SourceExtractor before being attached to the bean definition metadata.
Since:
2.0
Author:
Rob Harrop, Juergen Hoeller
See Also:
BeanMetadataElement.getSource(), BeanDefinition

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Object`	`extractSource(Object sourceCandidate, Resource definingResource)`	Extract the source metadata from the candidate object supplied by the configuration parser.

- Method Detail
  - extractSource
```
@Nullable
Object extractSource(Object sourceCandidate,
                     @Nullable
                     Resource definingResource)
```
    Extract the source metadata from the candidate object supplied by the configuration parser.
    Parameters:
    sourceCandidate - the original source metadata (never null)
    definingResource - the resource that defines the given source object (may be null)
    Returns:
    the source metadata object to store (may be null)