/*
* Copyright 2002-2016 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.cache.annotation;
import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Inherited;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import org.springframework.core.annotation.AliasFor;
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.
Author: Costin Leau, Stephane Nicoll, Sam Brannen See Also: Since: 3.1
/**
* Annotation indicating that a method (or all methods on a class) triggers a
* {@link org.springframework.cache.Cache#evict(Object) cache evict} operation.
*
* <p>This annotation may be used as a <em>meta-annotation</em> to create custom
* <em>composed annotations</em> with attribute overrides.
*
* @author Costin Leau
* @author Stephane Nicoll
* @author Sam Brannen
* @since 3.1
* @see CacheConfig
*/
@Target({ElementType.TYPE, ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@Inherited
@Documented
public @interface CacheEvict {
Alias for cacheNames
. /**
* Alias for {@link #cacheNames}.
*/
@AliasFor("cacheNames")
String[] value() default {};
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.
See Also: Since: 4.2
/**
* Names of the caches to use for the cache eviction operation.
* <p>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 #value
* @see CacheConfig#cacheNames
*/
@AliasFor("value")
String[] cacheNames() default {};
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.
/**
* Spring Expression Language (SpEL) expression for computing the key dynamically.
* <p>Default is {@code ""}, meaning all method parameters are considered as a key,
* unless a custom {@link #keyGenerator} has been set.
* <p>The SpEL expression evaluates against a dedicated context that provides the
* following meta-data:
* <ul>
* <li>{@code #result} for a reference to the result of the method invocation, which
* can only be used if {@link #beforeInvocation()} is {@code false}. For supported
* wrappers such as {@code Optional}, {@code #result} refers to the actual object,
* not the wrapper</li>
* <li>{@code #root.method}, {@code #root.target}, and {@code #root.caches} for
* references to the {@link java.lang.reflect.Method method}, target object, and
* affected cache(s) respectively.</li>
* <li>Shortcuts for the method name ({@code #root.methodName}) and target class
* ({@code #root.targetClass}) are also available.
* <li>Method arguments can be accessed by index. For instance the second argument
* can be accessed via {@code #root.args[1]}, {@code #p1} or {@code #a1}. Arguments
* can also be accessed by name if that information is available.</li>
* </ul>
*/
String key() default "";
The bean name of the custom KeyGenerator
to use. Mutually exclusive with the key
attribute.
See Also:
/**
* The bean name of the custom {@link org.springframework.cache.interceptor.KeyGenerator}
* to use.
* <p>Mutually exclusive with the {@link #key} attribute.
* @see CacheConfig#keyGenerator
*/
String keyGenerator() default "";
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:
/**
* The bean name of the custom {@link org.springframework.cache.CacheManager} to use to
* create a default {@link org.springframework.cache.interceptor.CacheResolver} if none
* is set already.
* <p>Mutually exclusive with the {@link #cacheResolver} attribute.
* @see org.springframework.cache.interceptor.SimpleCacheResolver
* @see CacheConfig#cacheManager
*/
String cacheManager() default "";
The bean name of the custom CacheResolver
to use. See Also:
/**
* The bean name of the custom {@link org.springframework.cache.interceptor.CacheResolver}
* to use.
* @see CacheConfig#cacheResolver
*/
String cacheResolver() default "";
Spring Expression Language (SpEL) expression used for making the cache
eviction operation conditional.
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.
/**
* Spring Expression Language (SpEL) expression used for making the cache
* eviction operation conditional.
* <p>Default is {@code ""}, meaning the cache eviction is always performed.
* <p>The SpEL expression evaluates against a dedicated context that provides the
* following meta-data:
* <ul>
* <li>{@code #root.method}, {@code #root.target}, and {@code #root.caches} for
* references to the {@link java.lang.reflect.Method method}, target object, and
* affected cache(s) respectively.</li>
* <li>Shortcuts for the method name ({@code #root.methodName}) and target class
* ({@code #root.targetClass}) are also available.
* <li>Method arguments can be accessed by index. For instance the second argument
* can be accessed via {@code #root.args[1]}, {@code #p1} or {@code #a1}. Arguments
* can also be accessed by name if that information is available.</li>
* </ul>
*/
String condition() default "";
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.
/**
* Whether all the entries inside the cache(s) are removed.
* <p>By default, only the value under the associated key is removed.
* <p>Note that setting this parameter to {@code true} and specifying a
* {@link #key} is not allowed.
*/
boolean allEntries() default false;
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).
/**
* Whether the eviction should occur before the method is invoked.
* <p>Setting this attribute to {@code true}, causes the eviction to
* occur irrespective of the method outcome (i.e., whether it threw an
* exception or not).
* <p>Defaults to {@code false}, meaning that the cache eviction operation
* will occur <em>after</em> the advised method is invoked successfully (i.e.
* only if the invocation did not throw an exception).
*/
boolean beforeInvocation() default false;
}