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

Class CheckCacheForSpecificChildren

Object

CheckCacheForSpecificChildren

All Implemented Interfaces:

ChildCacheFinder

public class CheckCacheForSpecificChildren
extends Object
implements ChildCacheFinder

For particular child-caches, check if a FeatureCalculationInput is available from another LRU-cache and reuse.

This is used to "redirect" certain child-caches to reuse sessions elsewhere.

Author:

Owen Feehan

Constructor Summary

Constructors

Constructor	Description
CheckCacheForSpecificChildren(Class<?> cacheInputType, CacheTransferSourceCollection source)

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 childName, V input)	Selects a child-cache given a parent and a child-name.
ChildCacheFinder	finderForGrandchild()	What finder to use for children-of-children?

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

CheckCacheForSpecificChildren

public CheckCacheForSpecificChildren(Class<?> cacheInputType,
 CacheTransferSourceCollection source)

Method Details

childCacheFor

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

Description copied from interface: ChildCacheFinder

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.

Specified by:

childCacheFor in interface ChildCacheFinder

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

childName - 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

public ChildCacheFinder finderForGrandchild()

Description copied from interface: ChildCacheFinder

What finder to use for children-of-children?

Specified by:

finderForGrandchild in interface ChildCacheFinder

Returns:

the finder to use.

cachesToAvoidInvalidating

public Optional<Set<ChildCacheName>> cachesToAvoidInvalidating()

Description copied from interface: ChildCacheFinder

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

If not-set, there are no exceptions.

Specified by:

cachesToAvoidInvalidating in interface ChildCacheFinder

Returns:

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