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SubClassFinder.java
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package act.util;
/*-
* #%L
* ACT Framework
* %%
* Copyright (C) 2014 - 2017 ActFramework
* %%
* 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.
* #L%
*/
import act.app.event.SysEventId;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* The annotation is used on a certain method to mark it
* as a callback method when a certain class has been found
* by super class specified.
*
* The eligible method signature of sub class finder is
*
* ```java
* {@literal @}SubClassFinder
* public void foo(Class<TYPE>) {...}
* ```
*
* Where `foo` could be any valid Java method name
*/
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface SubClassFinder {
String DEF_VALUE = SubClassFinder.class.getName();
/**
* Specify the "What" to find the class, i.e. the super class
* of the target classes to be found.
*
*
* If value is not specified, then Actframework will get the `What`
* information from the method signature
*
* @return the super class used to find the target classes
*/
Class<?> value() default SubClassFinder.class;
/**
* Should I collect only public classes?
*
* default value is `true`
*
* @return `true` if only public class shall be collected, `false` otherwise
*/
boolean publicOnly() default true;
/**
* Should I collect abstract classes?
*
* default value is `false`
*
* @return `true` if abstract classes shall be excluded, `false` otherwise
*/
boolean noAbstract() default true;
/**
* Specify when to execute the call back for a certain found class.
* <p>
* By default the value of `callOn` is {@link SysEventId#DEPENDENCY_INJECTOR_PROVISIONED}
*
* @return the "When" to execute the callback logic
*/
SysEventId callOn() default SysEventId.DEPENDENCY_INJECTOR_PROVISIONED;
}