Package com.priint.pubserver.util

Class Cache.CacheImpl

java.lang.Object

java.util.AbstractMap<K,V>

java.util.concurrent.ConcurrentHashMap<String,byte[]>

com.priint.pubserver.util.Cache.CacheImpl

All Implemented Interfaces:

Serializable, ConcurrentMap<String,byte[]>, Map<String,byte[]>

Enclosing class:

Cache

public static class Cache.CacheImpl
extends ConcurrentHashMap<String,byte[]>

Class implementing cache

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.util.concurrent.ConcurrentHashMap

ConcurrentHashMap.KeySetView<K extends Object,V extends Object>

Nested classes/interfaces inherited from class java.util.AbstractMap

AbstractMap.SimpleEntry<K extends Object,V extends Object>, AbstractMap.SimpleImmutableEntry<K extends Object,V extends Object>

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K extends Object,V extends Object>

Field Summary

Fields

Modifier and Type	Field	Description
long	maxBytes	Max size of the cache.
long	maxDuration	Maximum duration of the cache.

Method Summary

Modifier and Type	Method	Description
void	clear()	Method to clear the cache.
long	currentSize(String key)	Method to check the current size of an object in the cache
boolean	equals(Object o)	Method to check for equality
long	getCurrentBytes()
long	getExpires()
long	getMaxBytes()
long	getMaxDuration()
int	hashCode()
byte[]	put(String key, byte[] value)	Method to put values into the cache.
void	putAll(Map<? extends String,? extends byte[]> m)	Method to put multiple key-value pairs in the cache
byte[]	remove(Object key)	Method to remove a given value from the cache.
boolean	remove(Object key, Object value)	Method to remove a given value from the cache.

Methods inherited from class java.util.concurrent.ConcurrentHashMap

compute, computeIfAbsent, computeIfPresent, contains, containsKey, containsValue, elements, entrySet, forEach, forEach, forEach, forEachEntry, forEachEntry, forEachKey, forEachKey, forEachValue, forEachValue, get, getOrDefault, isEmpty, keys, keySet, keySet, mappingCount, merge, newKeySet, newKeySet, putIfAbsent, reduce, reduceEntries, reduceEntries, reduceEntriesToDouble, reduceEntriesToInt, reduceEntriesToLong, reduceKeys, reduceKeys, reduceKeysToDouble, reduceKeysToInt, reduceKeysToLong, reduceToDouble, reduceToInt, reduceToLong, reduceValues, reduceValues, reduceValuesToDouble, reduceValuesToInt, reduceValuesToLong, replace, replace, replaceAll, search, searchEntries, searchKeys, searchValues, size, toString, values

Methods inherited from class java.util.AbstractMap

clone

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

maxBytes

public long maxBytes

Max size of the cache. 64 MB per default

maxDuration

public long maxDuration

Maximum duration of the cache. 1 min per default

Method Details

put

public byte[] put(String key,
 byte[] value)

Method to put values into the cache.

Specified by:

put in interface Map<String,byte[]>

Overrides:

put in class ConcurrentHashMap<String,byte[]>

Parameters:

key - key of the value in the cache

value - value to be stored in the cache

Returns:

temporary file as byte[]

clear

public void clear()

Method to clear the cache. It also resets the expiration time of the cache.

Specified by:

clear in interface Map<String,byte[]>

Overrides:

clear in class ConcurrentHashMap<String,byte[]>

remove

public byte[] remove(Object key)

Method to remove a given value from the cache.

Specified by:

remove in interface Map<String,byte[]>

Overrides:

remove in class ConcurrentHashMap<String,byte[]>

Parameters:

key - key of the value to be removed

Returns:

temporary file as byte[]

remove

public boolean remove(Object key,
 Object value)

Method to remove a given value from the cache.

Specified by:

remove in interface ConcurrentMap<String,byte[]>

Specified by:

remove in interface Map<String,byte[]>

Overrides:

remove in class ConcurrentHashMap<String,byte[]>

Parameters:

key - key of the value to be removed from the cache

value - value to be removed from the cache

Returns:

true if the key with a given value existed and has been deleted from the cache. False otherwise.

putAll

public void putAll(Map<? extends String,? extends byte[]> m)

Method to put multiple key-value pairs in the cache

Specified by:

putAll in interface Map<String,byte[]>

Overrides:

putAll in class ConcurrentHashMap<String,byte[]>

Parameters:

m - - map String (key), byte[](value)

equals

public boolean equals(Object o)

Method to check for equality

Specified by:

equals in interface Map<String,byte[]>

Overrides:

equals in class ConcurrentHashMap<String,byte[]>

Parameters:

o - Object to be compared

Returns:

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<String,byte[]>

Overrides:

hashCode in class ConcurrentHashMap<String,byte[]>

currentSize

public long currentSize(String key)

Method to check the current size of an object in the cache

Parameters:

key - key of the object to be checked

Returns:

getMaxDuration

public long getMaxDuration()

Returns:

maximum duration of the cache

getMaxBytes

public long getMaxBytes()

Returns:

maximum size of the cache

getCurrentBytes

public long getCurrentBytes()

Returns:

current size of the cache

getExpires

public long getExpires()

Returns:

current expiration time of the cache