Package org.anchoranalysis.feature.session.cache.finder

Interface ChildCacheFinder

All Known Implementing Classes:

CheckCacheForSpecificChildren, DefaultChildCacheFinder

public interface ChildCacheFinder

Strategy to determine which child-cache (among hierarchy) to employ for a particular feature calculation.

Method Summary

Modifier and Type	Method	Description
Optional<Set<ChildCacheName>>	cachesToAvoidInvalidating()	If set, these particular-caches are exceptionally not invalidated during the typical invalidation operation on their parent.
<V extends FeatureInput> FeatureCalculationCache<V>	childCacheFor(FeatureCalculationCache<?> parentCache, CacheCreator factory, ChildCacheName childCacheName, V input)	Selects a child-cache given a parent and a child-name.
ChildCacheFinder	finderForGrandchild()	What finder to use for children-of-children?

Method Details

childCacheFor

<V extends FeatureInput> FeatureCalculationCache<V> childCacheFor(FeatureCalculationCache<?> parentCache,
 CacheCreator factory,
 ChildCacheName childCacheName,
 V input)
                                                           throws FeatureCalculationException

Selects a child-cache given a parent and a child-name.

This may involve reusing an existing cache, or creating a new one, depending on the strategy.

Type Parameters:

V - type-of-input to be used to calculate on the child-cache

Parameters:

parentCache - the existing parent-cache

factory - how to create new caches

childCacheName - name of child-cache

input - input to be used for calculations on the child-cache

Returns:

an existing or newly created child-cache depending on the strategy.

Throws:

FeatureCalculationException - if no child-cache exists or can be created for childCacheName.

finderForGrandchild

ChildCacheFinder finderForGrandchild()

What finder to use for children-of-children?

Returns:

the finder to use.

cachesToAvoidInvalidating

Optional<Set<ChildCacheName>> cachesToAvoidInvalidating()

If set, these particular-caches are exceptionally not invalidated during the typical invalidation operation on their parent.

If not-set, there are no exceptions.

Returns:

the names of the caches that are exceptionally not invalidated, if any exist.