PolicyCache (MYDATA :: SDK 4.2.1 API)

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

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Optional<Set<Policy>>`	`getPolicies()`
`void`	`invalidate()`	invalidates the cache
`boolean`	`isValid()`
`boolean`	`updateCache(Set<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<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<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