MetadataCache (Shibboleth IdP :: Plugins :: OIDC Common :: Relying Party Metadata API 2.1.0 API)

Type Parameters:

U - The metadata type.
```
public interface MetadataCache<U>
```
A cache for loading, storing, and retrieving metadata against against the supplied CriteriaSet.
Implementations can choose the specific cache semantics implemented e.g. read-through, refresh-ahead etc. and storage/eviction strategies.

Implementations are intended to be access concurrently, and therefore are required to be thread-safe.

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  List<U> get(CriteriaSet criteria)
  Get the list of metadata matching the given identifier.

- Method Detail
  - get
```
@Nonnull
@NonnullElements
List<U> get(@Nonnull @NotEmpty
            CriteriaSet criteria)
     throws MetadataCacheException
```
    Get the list of metadata matching the given identifier.
    The implementing method is required to be thread safe.
    
    Parameters:
    
    criteria - the criteria to use when getting the metadata from the cache or the source.
    
    Returns:
    
    a list of metadata matching the criteria.
    
    Throws:
    
    MetadataCacheException - on error fetching metadata.