import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;

   
/**      
 * 屬性拷貝的 工具類
 * @author zhangtengda        
 * @version 1.0      
 * @created 2015年6月10日 上午11:06:22     
 */       
public class PropertyCopy {
	/**
	 * 利用反射實現物件之間屬性複製
	 * @param from
	 * @param to
	 */
	public static void copyProperties(Object from, Object to) throws Exception {
		copyPropertiesExclude(from, to, null);
	}
	
	/**
	 * 複製物件屬性
	 * @param from
	 * @param to
	 * @param excludsArray 排除屬性列表
	 * @throws Exception
	 */
	@SuppressWarnings("unchecked")
	public static void copyPropertiesExclude(Object from, Object to, String[] excludsArray) throws Exception {
		List<String> excludesList = null;
		if(excludsArray != null && excludsArray.length > 0) {
			excludesList = Arrays.asList(excludsArray);	//構造列表物件
		}
		Method[] fromMethods = from.getClass().getDeclaredMethods();
		Method[] toMethods = to.getClass().getDeclaredMethods();
		Method fromMethod = null, toMethod = null;
		String fromMethodName = null, toMethodName = null;
		for (int i = 0; i < fromMethods.length; i++) {
			fromMethod = fromMethods[i];
			fromMethodName = fromMethod.getName();
			if (!fromMethodName.contains("get"))
				continue;
			//排除列表檢測
			if(excludesList != null && excludesList.contains(fromMethodName.substring(3).toLowerCase())) {
				continue;
			}
			toMethodName = "set" + fromMethodName.substring(3);
			toMethod = findMethodByName(toMethods, toMethodName);
			if (toMethod == null)
				continue;
			Object value = fromMethod.invoke(from, new Object[0]);
			if(value == null)
				continue;
			//集合類判空處理
			if(value instanceof Collection) {
				Collection newValue = (Collection)value;
				if(newValue.size() <= 0)
					continue;
			}
			toMethod.invoke(to, new Object[] {value});
		}
	}
	
	/**
	 * 物件屬性值複製，僅複製指定名稱的屬性值
	 * @param from
	 * @param to
	 * @param includsArray
	 * @throws Exception
	 */
	@SuppressWarnings("unchecked")
	public static void copyPropertiesInclude(Object from, Object to, String[] includsArray) throws Exception {
		List<String> includesList = null;
		if(includsArray != null && includsArray.length > 0) {
			includesList = Arrays.asList(includsArray);	//構造列表物件
		} else {
			return;
		}
		Method[] fromMethods = from.getClass().getDeclaredMethods();
		Method[] toMethods = to.getClass().getDeclaredMethods();
		Method fromMethod = null, toMethod = null;
		String fromMethodName = null, toMethodName = null;
		for (int i = 0; i < fromMethods.length; i++) {
			fromMethod = fromMethods[i];
			fromMethodName = fromMethod.getName();
			if (!fromMethodName.contains("get"))
				continue;
			//排除列表檢測
			String str = fromMethodName.substring(3);
			if(!includesList.contains(str.substring(0,1).toLowerCase() + str.substring(1))) {
				continue;
			}
			toMethodName = "set" + fromMethodName.substring(3);
			toMethod = findMethodByName(toMethods, toMethodName);
			if (toMethod == null)
				continue;
			Object value = fromMethod.invoke(from, new Object[0]);
			if(value == null)
				continue;
			//集合類判空處理
			if(value instanceof Collection) {
				Collection newValue = (Collection)value;
				if(newValue.size() <= 0)
					continue;
			}
			toMethod.invoke(to, new Object[] {value});
		}
	}
	
	

	/**
	 * 從方法陣列中獲取指定名稱的方法
	 * 
	 * @param methods
	 * @param name
	 * @return
	 */
	public static Method findMethodByName(Method[] methods, String name) {
		for (int j = 0; j < methods.length; j++) {
			if (methods[j].getName().equals(name))
				return methods[j];
		}
		return null;
	}
}