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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.ioc;

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

import com.ajaxjs.util.ReflectUtil;
import com.ajaxjs.util.io.resource.AbstractScanner;
import com.ajaxjs.util.io.resource.ScanClass;

import javassist.CannotCompileException;
import javassist.ClassPool;
import javassist.CtClass;
import javassist.CtField;
import javassist.CtMethod;
import javassist.CtNewMethod;
import javassist.NotFoundException;

/**
 * Speical for Java Class Scanning
 * 
 * @author Sp42 [email protected]
 *
 */
public class BeanLoader extends AbstractScanner> {
	@Override
	public FileFilter getFileFilter() {
		return ScanClass.fileFilter;
	}

	@Override
	public void onFileAdding(Set> target, File resourceFile, String packageJavaName) {
		String resourcePath = ScanClass.getClassName(resourceFile, packageJavaName);
		onJarAdding(target, resourcePath);
	}

	@SuppressWarnings("unchecked")
	@Override
	public void onJarAdding(Set> target, String resourcePath) {
		ClassPool cp = ClassPool.getDefault();

		try {
			CtClass cc = cp.get(resourcePath);
			doAop(cc);
			makeSetter(cc);
//			if ("com.ajaxjs.ioc.Hi".equals(resourcePath)) {
//				CtField f1 = new CtField(cp.get("com.ajaxjs.ioc.Person"), "person", cc);
//				cc.addMethod(CtNewMethod.setter("setPerson", f1));
//			}

			Class clazz = (Class) cc.toClass();
			target.add(clazz);
		} catch (CannotCompileException e) {
			Class clazz = (Class) ReflectUtil.getClassByName(resourcePath);
			target.add(clazz);
		} catch (NotFoundException | ClassNotFoundException e) {
			e.printStackTrace();
		}
	}

	private void makeSetter(CtClass cc) throws ClassNotFoundException, CannotCompileException, NotFoundException {
		CtField[] fields = cc.getDeclaredFields();
		for (CtField field : fields) {
			if (field.getAnnotation(Resource.class) != null) {
				String setMethodName = "set" + ReflectUtil.firstLetterUpper(field.getName());
				CtMethod setter;

				try {
					setter = cc.getDeclaredMethod(setMethodName, new CtClass[] { field.getType() });
				} catch (NotFoundException e) {
					// 另外一种写法
//					String tpl = "public void %s(%s %s) { this.%s = %s; }";
//					String m = String.format(tpl, setMethodName, field.getType().getName(), field.getName(), field.getName(), field.getName());
//					setter = CtNewMethod.make(m, cc);
//					System.out.println(setMethodName);

					CtField f1 = new CtField(field.getType(), field.getName(), cc);
					setter = CtNewMethod.setter(setMethodName, f1);
					cc.addMethod(setter);
				}
			}
		}
	}

	/**
	 * 
	 * @param cc
	 * @throws ClassNotFoundException
	 * @throws CannotCompileException
	 */
	private static void doAop(CtClass cc) throws ClassNotFoundException, CannotCompileException {
		CtMethod[] methods = cc.getMethods();
		if (methods != null && methods.length > 0) {
			
			for (CtMethod method : methods) {
				if (method.getAnnotation(Before.class) != null) {
					Before before = (Before) method.getAnnotation(Before.class);
					String beforeMethod = before.value().getName() + "." + before.methodName(); // static method only
					method.insertBefore(String.format("{ $args = %s($args); }", beforeMethod));
				}

				if (method.getAnnotation(After.class) != null) {
					After after = (After) method.getAnnotation(After.class);
					String afterMethod = after.value().getName() + "." + after.methodName(); // static method only
					method.insertAfter(String.format("{ return %s($_); }", afterMethod));
				}
			}
		}
	}

	/**
	 * 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 BeanLoader().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;
		BeanLoader scanner = new BeanLoader();

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

		return classes;
	}

}
    

    

    

            

    

            



    
    






    
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