content: /*
   * Copyright 1999-2018 Alibaba Group Holding Ltd.
   *
   * 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 com.alibaba.nacos.common.packagescan;
  
  import java.lang.annotation.Annotation;
  import java.util.Set;
  
  /**
   * Scan all appropriate Class object through the package name.
   *
   * @author hujun
   */
  public interface PackageScan {
      
      /**
       * Scan all appropriate Class object through the package name and Class object.
       *
       * @param pkg          package name,for example, com.alibaba.nacos.common
       * @param requestClass super class
       * @param <T>          Class type
       * @return a set contains Class
       */
      <T> Set<Class<T>> getSubTypesOf(String pkg, Class<T> requestClass);
      
      /**
       * Scan all appropriate Class object through the package name and annotation.
       *
       * @param pkg        package name,for example, com.alibaba.nacos.common
       * @param annotation annotation
       * @param <T>        Class type
       * @return a set contains Class object
       */
      <T> Set<Class<T>> getTypesAnnotatedWith(String pkg, Class<? extends Annotation> annotation);
      
  }
  