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A Simple Tool Operations Class
There is a newer version: 1.3.0.5.RELEASE
package com.luues.util.datawrap;

import java.io.Serializable;
import java.lang.reflect.Field;

public class PageDataWrap extends DataWrap implements Serializable {

    private int currPage;
    private int pageSize;
    private int total;
    private int pageCount;

    public PageDataWrap() {
        super();
    }

    public PageDataWrap(int resultCode) {
        this.resultCode = resultCode;
        resh();
    }

    public PageDataWrap(int resultCode, String resultMsg) {
        this.resultCode = resultCode;
        this.resultMsg = resultMsg;
        resh();
    }


    public void setPage(Page page) {
        this.put("rows", page.getData());
        this.pageCount = page.getPageCount();
        this.pageSize = page.getPageSize();
        this.currPage = page.getCurrPage();
        this.total = (int) page.getTotal();
        resh();
    }

    public int getResultCode() {
        return this.resultCode;
    }

    public void setResultCode(int resultCode) {
        this.resultCode = resultCode;
    }

    public String getResultMsg() {
        return this.resultMsg;
    }

    public void setResultMsg(String resultMsg) {
        this.resultMsg = resultMsg;
    }

    public int getTotal() {
        return total;
    }

    public void setTotal(int total) {
        //this.currPage = ResultCode.getCurrPage();
        //this.pageSize = ResultCode.getPageSize();
        this.total = total;
        //this.pageCount = this.total == 0 ? 1 : this.total % ResultCode.getPageSize() == 0 ? this.total / ResultCode.getPageSize() : this.total / ResultCode.getPageSize() + 1;
        resh();
    }

    public int getPageCount() {
        return pageCount;
    }

    public void setPageCount(int pageCount) {
        this.pageCount = pageCount;
    }

    public Object getData() {
        return this.get("rows");
    }

    public void putData(Object value) {
        this.put("rows", value);
    }

    public int getCurrPage() {
        return currPage;
    }

    public void setCurrPage(int currPage) {
        this.currPage = currPage;
    }

    public int getPageSize() {
        return pageSize;
    }

    public void setPageSize(int pageSize) {
        this.pageSize = pageSize;
    }


    private void resh() {
        Field[] fields = this.getClass().getDeclaredFields();
        for (int i = 0; i < fields.length; i++) {
            this.put(fields[i].getName(), getFieldValueByName(fields[i].getName(), this));
        }
        fields = this.getClass().getSuperclass().getDeclaredFields();
        for (int i = 0; i < fields.length; i++) {
            this.put(fields[i].getName(), getFieldValueByName(fields[i].getName(), this));
        }
    }
}