Cache (uk.gov.gchq.gaffer:gaffer2 2.2.0 API)

java.lang.Object
- uk.gov.gchq.gaffer.cache.Cache<K,V>

Type Parameters:

V - The type of values to add and get.

Direct Known Subclasses:

FederatedStoreCacheTransient, JobTracker, NamedOperationCache, NamedViewCache
```
public class Cache<K,V>
extends Object
```
Type safe cache, adding and getting is guaranteed to be same type.

Constructor Summary

Constructors
Constructor Description

Cache(String cacheName)

Cache(String cacheName, String serviceName)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`clearCache()`	Clear the cache.
`boolean`	`contains(String graphId)`
`void`	`deleteFromCache(String key)`	Delete the value related to the specified ID from the cache.
`Iterable<K>`	`getAllKeys()`
`ICache<K,V>`	`getCache()`	Get the cache.
`String`	`getCacheName()`
`static String`	`getCacheNameFrom(String prefixCacheServiceName, String suffixCacheName)`
`V`	`getFromCache(String key)`	Gets the requested value from the cache
`String`	`getSuffixCacheNameWithoutPrefix(String prefixCacheServiceName)`

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Cache

public Cache(String cacheName,
             String serviceName)

Cache
```
public Cache(String cacheName)
```

Method Detail

getFromCache
```
public V getFromCache(String key)
               throws CacheOperationException
```
Gets the requested value from the cache

Parameters:

key - Key to the value

Returns:

The value associated with the key

Throws:

CacheOperationException - if issue getting from cache

getCacheName
```
public String getCacheName()
```

getAllKeys
```
public Iterable<K> getAllKeys()
```

clearCache
```
public void clearCache()
                throws CacheOperationException
```
Clear the cache.

Throws:

CacheOperationException - if there was an error trying to clear the cache

contains

public boolean contains(String graphId)

deleteFromCache
```
public void deleteFromCache(String key)
```
Delete the value related to the specified ID from the cache.

Parameters:

key - the ID of the key to be deleted

getCache
```
public ICache<K,V> getCache()
```
Get the cache.

Returns:

ICache

getSuffixCacheNameWithoutPrefix

public String getSuffixCacheNameWithoutPrefix(String prefixCacheServiceName)

getCacheNameFrom

public static String getCacheNameFrom(String prefixCacheServiceName,
                                      String suffixCacheName)