org.springframework.cache.annotation

Annotation Type CacheEvict

@Target(value={TYPE,METHOD})
 @Retention(value=RUNTIME)
 @Inherited
 @Documented
public @interface CacheEvict

Annotation indicating that a method (or all methods on a class) triggers a cache evict operation.

This annotation may be used as a meta-annotation to create custom composed annotations with attribute overrides.

Since:

3.1

Author:

Costin Leau, Stephane Nicoll, Sam Brannen

See Also:

CacheConfig

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element and Description
boolean	allEntries Whether all the entries inside the cache(s) are removed.
boolean	beforeInvocation Whether the eviction should occur before the method is invoked.
String	cacheManager The bean name of the custom CacheManager to use to create a default CacheResolver if none is set already.
String[]	cacheNames Names of the caches to use for the cache eviction operation.
String	cacheResolver The bean name of the custom CacheResolver to use.
String	condition Spring Expression Language (SpEL) expression used for making the cache eviction operation conditional.
String	key Spring Expression Language (SpEL) expression for computing the key dynamically.
String	keyGenerator The bean name of the custom KeyGenerator to use.
String[]	value Alias for cacheNames().

Element Detail

value

@AliasFor(value="cacheNames")
public abstract String[] value

Alias for cacheNames().

Default:

{}

cacheNames

@AliasFor(value="value")
public abstract String[] cacheNames

Names of the caches to use for the cache eviction operation.

Names may be used to determine the target cache (or caches), matching the qualifier value or bean name of a specific bean definition.

Since:

4.2

See Also:

value(), CacheConfig.cacheNames()

Default:

{}

key

public abstract String key

Spring Expression Language (SpEL) expression for computing the key dynamically.

Default is "", meaning all method parameters are considered as a key, unless a custom keyGenerator() has been set.

The SpEL expression evaluates against a dedicated context that provides the following meta-data:

• #result for a reference to the result of the method invocation, which can only be used if beforeInvocation() is false. For supported wrappers such as Optional, #result refers to the actual object, not the wrapper
• #root.method, #root.target, and #root.caches for references to the method, target object, and affected cache(s) respectively.
• Shortcuts for the method name (#root.methodName) and target class (#root.targetClass) are also available.
• Method arguments can be accessed by index. For instance the second argument can be accessed via #root.args[1], #p1 or #a1. Arguments can also be accessed by name if that information is available.

Default:

""

keyGenerator

public abstract String keyGenerator

The bean name of the custom KeyGenerator to use.

Mutually exclusive with the key() attribute.

See Also:

CacheConfig.keyGenerator()

Default:

""

cacheManager

public abstract String cacheManager

The bean name of the custom CacheManager to use to create a default CacheResolver if none is set already.

Mutually exclusive with the cacheResolver() attribute.

See Also:

SimpleCacheResolver, CacheConfig.cacheManager()

Default:

""

cacheResolver

public abstract String cacheResolver

The bean name of the custom CacheResolver to use.

See Also:

CacheConfig.cacheResolver()

Default:

""

condition

public abstract String condition

Spring Expression Language (SpEL) expression used for making the cache eviction operation conditional. Evict that cache if the condition evaluates to true.

Default is "", meaning the cache eviction is always performed.

The SpEL expression evaluates against a dedicated context that provides the following meta-data:

• #root.method, #root.target, and #root.caches for references to the method, target object, and affected cache(s) respectively.
• Shortcuts for the method name (#root.methodName) and target class (#root.targetClass) are also available.
• Method arguments can be accessed by index. For instance the second argument can be accessed via #root.args[1], #p1 or #a1. Arguments can also be accessed by name if that information is available.

Default:

""

allEntries

public abstract boolean allEntries

Whether all the entries inside the cache(s) are removed.

By default, only the value under the associated key is removed.

Note that setting this parameter to true and specifying a key() is not allowed.

Default:

false

beforeInvocation

public abstract boolean beforeInvocation

Whether the eviction should occur before the method is invoked.

Setting this attribute to true, causes the eviction to occur irrespective of the method outcome (i.e., whether it threw an exception or not).

Defaults to false, meaning that the cache eviction operation will occur after the advised method is invoked successfully (i.e. only if the invocation did not throw an exception).

Default:

false