Package org.springframework.cache.interceptor

Class SimpleKeyGenerator

java.lang.Object

org.springframework.cache.interceptor.SimpleKeyGenerator

All Implemented Interfaces:

KeyGenerator

public class SimpleKeyGenerator
extends Object
implements KeyGenerator

Simple key generator. Returns the parameter itself if a single non-null value is given, otherwise returns a SimpleKey of the parameters.

No collisions will occur with the keys generated by this class. The returned SimpleKey object can be safely used with a ConcurrentMapCache, however, might not be suitable for all Cache implementations.

Since:

4.0

Author:

Phillip Webb, Juergen Hoeller, Sebastien Deleuze

See Also:

• SimpleKey
• CachingConfigurer

Constructor Summary

Constructors

Constructor	Description
SimpleKeyGenerator()

Method Summary

Modifier and Type	Method	Description
Object	generate(Object target, Method method, @Nullable Object... params)	Generate a key for the given method and its parameters.
static Object	generateKey(@Nullable Object... params)	Generate a key based on the specified parameters.

Methods inherited from class java.lang.Object

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

Constructor Details

SimpleKeyGenerator

public SimpleKeyGenerator()

Method Details

generate

public Object generate(Object target,
 Method method,
 @Nullable Object... params)

Description copied from interface: KeyGenerator

Generate a key for the given method and its parameters.

Specified by:

generate in interface KeyGenerator

Parameters:

target - the target instance

method - the method being called

params - the method parameters (with any var-args expanded)

Returns:

a generated key

generateKey

public static Object generateKey(@Nullable Object... params)

Generate a key based on the specified parameters.