JAVA装饰模式，封装父类，提供转换接口（二）

numen06

http://numen06.iteye.com/blog/1428067
上一篇文章提到了装饰类的父类，对于一些基本功能的封装。
在实际运用过程中，带的类型有两个太复杂， 不利于装饰类的扩展。
所以功能和装饰类区分，以便更好的扩展。

package com.wesley.framework.decoration;import java.util.Collection;import java.util.List;public interface Decoration<Model, Decor extends Decorator<Model>> {public List<Decor> baseExchange(Collection<Model> models);public Decor baseExchange(Model model);}
package com.wesley.framework.decoration;public interface Decorator<T> extends java.io.Serializable {public void setModel(T model);public T getModel();}
package com.wesley.framework.decoration;import com.wesley.framework.commen.GenericsUtils;@SuppressWarnings("serial")public abstract class DecoratorModel<Model> implements Decorator<Model> {protected Model model;//protected DecoratorHelper<Model, ? extends Decorator<Model>> helper;/** * 装饰器构造函数，如果没有自动创建一个实体 */@SuppressWarnings("unchecked")public DecoratorModel() {super();try {Class<Model> cls = GenericsUtils.getSuperClassGenricType(this.getClass(), 0);this.setModel(cls.newInstance());} catch (InstantiationException e) {e.printStackTrace();} catch (IllegalAccessException e) {e.printStackTrace();}}/** * @param model *            将实体封装进入装饰器 */public DecoratorModel(Model model) {super();this.setModel(model);}@Overridepublic Model getModel() {return model;}/* * (non-Javadoc) *  * @see com.wesley.framework.decoration.Decorator#setModel(java.lang.Object) * 装饰器接口，将Model注入到装饰器中 */@Overridepublic void setModel(Model model) {this.model = model;//helper = new DecoratorHelper<Model,Decorator<Model>>(//(Class<Decorator<Model>>) this.getClass());}// /*// * (non-Javadoc)// *// * @see// *// com.wesley.framework.decoration.Decoration#baseExchange(java.lang.Object)// *// * 反射必有参数构造函数，将实体包含在装饰器之中// */// @SuppressWarnings("unchecked")// @Override// public Decor baseExchange(Model model) {// Decor decor = null;// try {// decor = (Decor) this.getClass().getConstructor(model.getClass())// .newInstance(model);// } catch (InstantiationException e) {// e.printStackTrace();// } catch (IllegalAccessException e) {// e.printStackTrace();// } catch (IllegalArgumentException e) {// e.printStackTrace();// } catch (SecurityException e) {// e.printStackTrace();// } catch (InvocationTargetException e) {// e.printStackTrace();// } catch (NoSuchMethodException e) {// e.printStackTrace();// }// decor.setModel(model);// return decor;// }//// /*// * (non-Javadoc)// *// * @see// *// com.wesley.framework.decoration.Decoration#baseExchange(java.util.Collection// * 转换List等Collection接口数据// */// @Override// public List<Decor> baseExchange(Collection<Model> models) {// List<Decor> decorList = new ArrayList<Decor>();// for (Model model : models) {// decorList.add(this.baseExchange(model));// }// return decorList;// }}package com.wesley.framework.decoration;import java.lang.reflect.InvocationTargetException;import java.util.ArrayList;import java.util.Collection;import java.util.List;public class DecoratorHelper<Model, Decor extends Decorator<Model>> implementsDecoration<Model, Decor> {private Class<Decor> clazz;public DecoratorHelper(Class<Decor> dec) {super();this.clazz = dec;}@SuppressWarnings("unchecked")public DecoratorHelper(Decor dec) {super();this.clazz = (Class<Decor>) dec.getClass();}/* * (non-Javadoc) *  * @see * com.wesley.framework.decoration.Decoration#baseExchange(java.lang.Object) *  * 反射必有参数构造函数，将实体包含在装饰器之中 */@Overridepublic Decor baseExchange(Model model) {Decor decor = null;try {decor = clazz.getConstructor(model.getClass()).newInstance(model);} catch (InstantiationException e) {e.printStackTrace();} catch (IllegalAccessException e) {e.printStackTrace();} catch (IllegalArgumentException e) {e.printStackTrace();} catch (SecurityException e) {e.printStackTrace();} catch (InvocationTargetException e) {e.printStackTrace();} catch (NoSuchMethodException e) {e.printStackTrace();}decor.setModel(model);return decor;}/* * (non-Javadoc) *  * @see * com.wesley.framework.decoration.Decoration#baseExchange(java.util.Collection * 转换List等Collection接口数据 */@Overridepublic List<Decor> baseExchange(Collection<Model> models) {List<Decor> decorList = new ArrayList<Decor>();for (Model model : models) {decorList.add(this.baseExchange(model));}return decorList;}}