Copyright 2011-2016 Terracotta, Inc.
Copyright 2011-2016 Oracle America Incorporated
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.
/**
 * Copyright 2011-2016 Terracotta, Inc.
 * Copyright 2011-2016 Oracle America Incorporated
 *
 * 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 javax.cache.annotation;

import javax.cache.Cache;
import javax.cache.CacheManager;
import javax.enterprise.util.Nonbinding;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;


When a method annotated with CacheRemove is invoked a GeneratedCacheKey will be generated and Cache.remove(Object) will be invoked on the specified cache. 
 The default behavior is to call Cache.remove(Object) after the annotated method is invoked, this behavior can be changed by setting afterInvocation() to false in which case Cache.remove(Object) will be called before the annotated method is invoked. 
 Example of removing a specific Domain object from the "domainCache". A GeneratedCacheKey will be generated from the String and int parameters and used to call Cache.remove(Object) after the deleteDomain method completes successfully. 

package my.app;
public class DomainDao {
  @CacheRemove(cacheName="domainCache")
  public void deleteDomain(String domainId, int index) {
    ...
  }
}

 Exception Handling, only used if afterInvocation() is true. 

If evictFor() and noEvictFor() are both empty then all exceptions prevent the remove
If evictFor() is specified and noEvictFor() is not specified then only exceptions that pass an instanceof check against the evictFor list result in a remove
If noEvictFor() is specified and evictFor() is not specified then all exceptions that do not pass an instanceof check against the noEvictFor result in a remove
If evictFor() and noEvictFor() are both specified then exceptions that pass an instanceof check against the evictFor list but do not pass an instanceof check against the noEvictFor list result in a remove

Author:
Eric Dalquist, Rick Hightower, Greg Luck
See Also:
CacheKey
Since:
1.0/**
 * When a method annotated with {@link CacheRemove} is invoked a {@link
 * GeneratedCacheKey} will be generated and {@link Cache#remove(Object)} will be
 * invoked on the specified cache.
 * <p>
 * The default behavior is to call {@link Cache#remove(Object)} after
 * the annotated method is invoked, this behavior can be changed by setting
 * {@link #afterInvocation()} to false in which case
 * {@link Cache#remove(Object)} will be called before the annotated
 * method is invoked.
 * <p>
 * Example of removing a specific Domain object from the "domainCache". A {@link
 * GeneratedCacheKey} will be generated from the String and int parameters and
 * used to call {@link Cache#remove(Object)} after the deleteDomain
 * method completes successfully.
 * <pre><code>
 * package my.app;
 * 
 * public class DomainDao {
 *   &#64;CacheRemove(cacheName="domainCache")
 *   public void deleteDomain(String domainId, int index) {
 *     ...
 *   }
 * }
 * </code></pre>
 * <p>
 * Exception Handling, only used if {@link #afterInvocation()} is true.
 * <ol>
 * <li>If {@link #evictFor()} and {@link #noEvictFor()} are both empty then all
 * exceptions prevent the remove</li>
 * <li>If {@link #evictFor()} is specified and {@link #noEvictFor()} is not
 * specified then only exceptions that pass an instanceof check against the
 * evictFor list result in a remove</li>
 * <li>If {@link #noEvictFor()} is specified and {@link #evictFor()} is not
 * specified then all exceptions that do not pass an instanceof check against the
 * noEvictFor result in a remove</li>
 * <li>If {@link #evictFor()} and {@link #noEvictFor()} are both specified then
 * exceptions that pass an instanceof check against the evictFor list but do not
 * pass an instanceof check against the noEvictFor list result in a remove</li>
 * </ol>
 *
 * @author Eric Dalquist
 * @author Rick Hightower
 * @author Greg Luck
 * @see CacheKey
 * @since 1.0
 */
@Target({ElementType.METHOD, ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
public @interface CacheRemove {

  
The name of the cache.
 If not specified defaults first to CacheDefaults.cacheName(), and if that is not set then to: package.name.ClassName.methodName(package.ParameterType,package.ParameterType) /**
   * The name of the cache.
   * <p>
   * If not specified defaults first to {@link CacheDefaults#cacheName()},
   * and if that is not set then to:
   * package.name.ClassName.methodName(package.ParameterType,package.ParameterType)
   */
  @Nonbinding String cacheName() default "";

  
When Cache.remove(Object) should be called. If true it is called after the annotated method invocation completes successfully. If false it is called before the annotated method is invoked. 

Defaults to true.

If true and the annotated method throws an exception the remove will not be
executed.
/**
   * When {@link Cache#remove(Object)}  should be called. If true it is called
   * after the annotated method invocation completes successfully. If false it is
   * called before the annotated method is invoked.
   * <p>
   * Defaults to true.
   * <p>
   * If true and the annotated method throws an exception the remove will not be
   * executed.
   */
  @Nonbinding boolean afterInvocation() default true;

  
The CacheResolverFactory used to find the CacheResolver to use at runtime. 
 The default resolver pair will resolve the cache by name from the default CacheManager /**
   * The {@link CacheResolverFactory} used to find the {@link CacheResolver} to
   * use at runtime.
   * <p>
   * The default resolver pair will resolve the cache by name from the default
   * {@link CacheManager}
   */
  @Nonbinding Class<? extends CacheResolverFactory> cacheResolverFactory()
      default CacheResolverFactory.class;

  
The CacheKeyGenerator to use to generate the GeneratedCacheKey for interacting with the specified Cache. 
 Defaults to a key generator that uses Arrays.deepHashCode(Object[]) and Arrays.deepEquals(Object[], Object[]) with the array returned by CacheKeyInvocationContext.getKeyParameters() 
See Also:
CacheKey/**
   * The {@link CacheKeyGenerator} to use to generate the {@link
   * GeneratedCacheKey} for interacting with the specified Cache.
   * <p>
   * Defaults to a key generator that uses
   * {@link java.util.Arrays#deepHashCode(Object[])}
   * and {@link java.util.Arrays#deepEquals(Object[], Object[])} with the array
   * returned by {@link CacheKeyInvocationContext#getKeyParameters()}
   *
   * @see CacheKey
   */
  @Nonbinding Class<? extends CacheKeyGenerator> cacheKeyGenerator()
      default CacheKeyGenerator.class;

  
Defines zero (0) or more exception classes, that must be a subclass of Throwable, indicating the exception types that must cause a cache eviction. Only used if afterInvocation() is true. /**
   * Defines zero (0) or more exception {@link Class classes}, that must be a
   * subclass of {@link Throwable}, indicating the exception types that must cause
   * a cache eviction. Only used if {@link #afterInvocation()} is true.
   */
  @Nonbinding Class<? extends Throwable>[] evictFor() default {};

  
Defines zero (0) or more exception Classes, that must be a subclass of Throwable, indicating the exception types that must not cause a cache eviction. Only used if afterInvocation() is true. /**
   * Defines zero (0) or more exception {@link Class Classes}, that must be a
   * subclass of {@link Throwable}, indicating the exception types that must
   * <b>not</b> cause a cache eviction. Only used if {@link #afterInvocation()} is
   * true.
   */
  @Nonbinding Class<? extends Throwable>[] noEvictFor() default {};
}