org.springframework.cache.interceptor

Class DefaultKeyGenerator

java.lang.Object

org.springframework.cache.interceptor.DefaultKeyGenerator

All Implemented Interfaces:

KeyGenerator

Deprecated.

as of Spring 4.0, in favor of SimpleKeyGenerator or custom KeyGenerator implementations based on hash codes

@Deprecated
public class DefaultKeyGenerator
extends Object
implements KeyGenerator

Default key generator. Returns 0 if no parameters are provided, the parameter itself if only one is given or a hash code computed from all given parameters' hash code values. Uses the constant value 53 for any null parameters given.

NOTE: As this implementation returns only a hash of the parameters it is possible for key collisions to occur. Since Spring 4.0 the SimpleKeyGenerator is used when no explicit key generator has been defined. This class remains for applications that do not wish to migrate to the SimpleKeyGenerator.

Since:

3.1

Author:

Costin Leau, Chris Beams, Juergen Hoeller

Field Summary

Fields

Modifier and Type	Field and Description
static int	NO_PARAM_KEY Deprecated.
static int	NULL_PARAM_KEY Deprecated.

Constructor Summary

Constructors

Constructor and Description
DefaultKeyGenerator() Deprecated.

Method Summary

Modifier and Type	Method and Description
Object	generate(Object target, Method method, Object... params) Deprecated. Generate a key for the given method and its parameters.

Methods inherited from class java.lang.Object

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

Field Detail

NO_PARAM_KEY

public static final int NO_PARAM_KEY

Deprecated.

See Also:

Constant Field Values

NULL_PARAM_KEY

public static final int NULL_PARAM_KEY

Deprecated.

See Also:

Constant Field Values

Constructor Detail

DefaultKeyGenerator

public DefaultKeyGenerator()

Deprecated.

Method Detail

generate

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

Deprecated.

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