de.ipcon.db.cache

Interface CacheKeyCalculatorI

All Superinterfaces:

java.io.Serializable, ServerSideEventInformationCalculatorI

All Known Implementing Classes:

SingleAttributeCacheKeyCalculator

public interface CacheKeyCalculatorI
extends java.io.Serializable, ServerSideEventInformationCalculatorI

an interface for calculating cache-keys from to be cached values. Implements Serializable as classes implementing this interface need to be transferred from the client to the server.

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	$0

Method Summary

Modifier and Type	Method and Description
java.lang.Object	calculate(java.lang.Object o) delegates to calculateKey(Object), is needed for implementing ServerSideEventInformationCalculatorI
java.lang.Object	calculateKey(java.lang.Object value) calculates a key used for caching the value from the given value
boolean	canHandle(java.lang.Class c) returns true, if this CacheKeyCalculatorI may calculate a key out of objects of the given class
java.lang.Class	getCachedClass() returns the class of the cached objects
default java.lang.String	getKeyAttributeName() Returns the attribute name of the attribute, the value of which is taken as key for caching a value.

Methods inherited from interface de.ipcon.db.event.ServerSideEventInformationCalculatorI

getDescription

Field Detail

$0

static final java.lang.String $0

See Also:

Constant Field Values

Method Detail

getKeyAttributeName

default java.lang.String getKeyAttributeName()

Returns the attribute name of the attribute, the value of which is taken as key for caching a value.

Returns:

the attribute name of the attribute, the value of which is taken as key for caching a value or null if the attribute name is either unknown or if the cache key is not based on the value of an attribute.

calculateKey

java.lang.Object calculateKey(java.lang.Object value)

calculates a key used for caching the value from the given value

getCachedClass

java.lang.Class getCachedClass()

returns the class of the cached objects

canHandle

boolean canHandle(java.lang.Class c)

returns true, if this CacheKeyCalculatorI may calculate a key out of objects of the given class

Specified by:

canHandle in interface ServerSideEventInformationCalculatorI

calculate

java.lang.Object calculate(java.lang.Object o)

delegates to calculateKey(Object), is needed for implementing ServerSideEventInformationCalculatorI

Specified by:

calculate in interface ServerSideEventInformationCalculatorI