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ClassFilter.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 org.osgl.util.E;
import java.lang.annotation.Annotation;
/**
* Defines class filter specification and handle method when
* the class been found. <b>Note</b> only public and non-abstract
* class will be filtered out, these two requirements are
* implicit specification
*/
public abstract class ClassFilter<SUPER_TYPE, ANNOTATION_TYPE extends Annotation> {
private Class<SUPER_TYPE> superType;
private Class<ANNOTATION_TYPE> annotationType;
private boolean noAbstract;
private boolean publicOnly;
public ClassFilter(Class<SUPER_TYPE> superType, Class<ANNOTATION_TYPE> annotationType) {
this(false, false, superType, annotationType);
}
public ClassFilter(boolean publicOnly, boolean noAbstract, Class<SUPER_TYPE> superType, Class<ANNOTATION_TYPE> annotationType) {
E.npeIf(superType == null && annotationType == null);
this.superType = superType;
this.annotationType = annotationType;
this.noAbstract = noAbstract;
this.publicOnly = publicOnly;
}
/**
* Once a class has been found as per the requirements
* of this class filter, Act will load the class and call
* this method on this filter instance
*
* @param clazz the class instance been found
*/
public abstract void found(Class<? extends SUPER_TYPE> clazz);
/**
* Specify the super type that must be extended or implemented
* by the targeting class
*/
public Class<SUPER_TYPE> superType() {
return superType;
}
/**
* Specify the annotation type that target class will be annotated
*/
public Class<ANNOTATION_TYPE> annotationType() {
return annotationType;
}
public boolean noAbstract() {
return noAbstract;
}
public boolean publicOnly() {
return publicOnly;
}
}