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AJAXJS aims to full-stack, not only the server-side framework, but also integrates the front-end library. It'€™s written in HTML5 + Java, a successor to the JVM platform, efficient, secure, stable, cross-platform and many other advantages, but it abandoned the traditional enterprise architecture brought about by the large and bloated, emphasizing the lightweight, and fast, very suitable for the Internet fast application.

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/**
 * Copyright 2015 Sp42 [email protected]
 *
 * 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.ajaxjs.util.io.resource;

import java.io.File;
import java.io.FileFilter;
import java.util.Set;

import com.ajaxjs.util.ReflectUtil;

/**
 * Speical for Java Class Scanning
 * 
 * @author Sp42 [email protected]
 *
 */
public class ScanClass extends AbstractScanner> {
	/**
	 * 用于查找 class 文件的过滤器
	 */
	public final static FileFilter fileFilter = new FileFilter() {
		@Override
		public boolean accept(File file) {
			return file.isDirectory() || file.getName().endsWith(".class");
		}
	};

	@Override
	public FileFilter getFileFilter() {
		return fileFilter;
	}

	@SuppressWarnings("unchecked")
	@Override
	public void onFileAdding(Set> target, File resourceFile, String packageJavaName) {
		Class clazz = (Class) ReflectUtil.getClassByName(getClassName(resourceFile, packageJavaName));
		target.add(clazz);
	}

	@SuppressWarnings("unchecked")
	@Override
	public void onJarAdding(Set> target, String resourcePath) {
		Class clazz = (Class) ReflectUtil.getClassByName(resourcePath);
		target.add(clazz);
	}

	/**
	 * 输入包名,获取所有的 classs
	 * 
	 * @param packageJavaName 包名
	 * @return 结果
	 */
	public static Set> scanClass(String packageJavaName) {
		return new ScanClass().scan(packageJavaName);
	}

	/**
	 * 输入多个包名,获取所有的 class。多个 set 可以用 addAll 合并之
	 * 
	 * @param packageJavaNames 包名
	 * @return 结果
	 */
	public static Set> scanClass(String... packageJavaNames) {
		Set> classes = null;
		ScanClass scanner = new ScanClass<>();

		for (String packageJavaName : packageJavaNames) {
			if (classes == null) {
				classes = scanner.scan(packageJavaName);
			} else {
				classes.addAll(classes);
			}
		}

		return classes;
	}

	/**
	 * Java 类文件 去掉后面的 .class 只留下类名
	 * 
	 * @param file            Java 类文件
	 * @param packageJavaName 包名称
	 * @return 类名
	 */
	public static String getClassName(File file, String packageJavaName) {
		String className = file.getName().substring(0, file.getName().length() - 6);
		className = packageJavaName + '.' + className;

		return className;
	}

}