/*
* 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
*
* http://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.METHOD, ElementType.TYPE})
@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;
}