package com.zteits.oa.util.pagepaper;

import java.util.ArrayList;
import java.util.List;

import org.springframework.beans.BeanUtils;

import com.github.pagehelper.PageInfo;
import com.zteits.oa.api.base.bean.PageBean;

/**
 * 分页插件结果转换工具类.<br/>
 * 
 * Copyright: Copyright (c) 2017  zteits
 * 
 * @ClassName: PageBeanUtil.java
 * @Description: 
 * @version: v1.0.0
 * @author: wangfs
 * @date: 2017年4月19日   下午4:03:33 
 * Modification History:
 * Date             Author          Version            Description
 *---------------------------------------------------------*
 * 2017年4月19日      wangfs           v1.0.0               创建
 */
public class PageBeanUtil {

	/**
	 * 将PageInfo 转换成PageBean.<br/>
	 * @param form  PageInfo<R> 对象.<br/>
	 * @param to PageBean<L> 对象.<br/>
	 * @param clazz 
	 */
	public static<R,L> void copyProperties(PageInfo<R> form,PageBean<L> to,Class<L> clazz){
		if(form != null && to != null  &&  clazz != null){
			List<L> list = new ArrayList<L>();
			if(!org.springframework.util.CollectionUtils.isEmpty(form.getList())){
				for(R source:form.getList()){
					if(source == null){
						continue;
					}
					try {
						L target = clazz.newInstance();
						BeanUtils.copyProperties(source, target);
						list.add(target);
					} catch (InstantiationException e) {
						e.printStackTrace();
					} catch (IllegalAccessException e) {
						e.printStackTrace();
					}
				}
				to.setDataList(list);
				to.setPageNum(form.getPageNum());
				to.setPageSize(form.getPageSize());
				to.setPages(form.getPages());
				to.setPageTotals(Integer.valueOf(String.valueOf(form.getTotal())));
			}else{
				to.setDataList(list);
				to.setPageNum(form.getPageNum());
				to.setPageSize(form.getPageSize());
				to.setPages(form.getPages());
				to.setPageTotals(Integer.valueOf(String.valueOf(form.getTotal())));
			}
		}else{
			try {
				throw new Exception("源对象,目标对象,clazz 不能为空!");
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
	}
	
	
	

}