Package de.fraunhofer.iese.mydata.pmp.cache

Class PolicyCache

java.lang.Object

de.fraunhofer.iese.mydata.pmp.cache.PolicyCache

All Implemented Interfaces:

IPolicyCache

public class PolicyCache
extends Object
implements IPolicyCache

Keeps a copy of a policy list

Author:

feth

Constructor Summary

Constructors

Constructor	Description
PolicyCache()
PolicyCache(java.util.function.Supplier<java.time.Instant> instantSupplier, String cachePath, java.time.Duration maxCacheAge)

Method Summary

Modifier and Type	Method	Description
Optional<Set<de.fraunhofer.iese.mydata.policy.Policy>>	getPolicies()
void	invalidate()	invalidates the cache
boolean	isValid()
boolean	updateCache(Set<de.fraunhofer.iese.mydata.policy.Policy> policies)	updates cache content and refreshes validation time
void	validate()	refreshes validation time of the cache without changing its contents

Methods inherited from class java.lang.Object

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

Constructor Detail

PolicyCache

public PolicyCache()

PolicyCache

public PolicyCache(java.util.function.Supplier<java.time.Instant> instantSupplier,
                   String cachePath,
                   @Nullable
                   java.time.Duration maxCacheAge)

Method Detail

getPolicies

public Optional<Set<de.fraunhofer.iese.mydata.policy.Policy>> getPolicies()

Specified by:

getPolicies in interface IPolicyCache

Returns:

the cached policies if cache is valid or else empty Optional

isValid

public boolean isValid()

Specified by:

isValid in interface IPolicyCache

Returns:

whether the cache is valid

invalidate

public void invalidate()

Description copied from interface: IPolicyCache

invalidates the cache

Specified by:

invalidate in interface IPolicyCache

validate

public void validate()

Description copied from interface: IPolicyCache

refreshes validation time of the cache without changing its contents

Specified by:

validate in interface IPolicyCache

updateCache

public boolean updateCache(Set<de.fraunhofer.iese.mydata.policy.Policy> policies)

Description copied from interface: IPolicyCache

updates cache content and refreshes validation time

Specified by:

updateCache in interface IPolicyCache

Returns:

whether updating the cache succeeded