ibatIS中的isNotNull、isEqual、isEmpty用法

isNull判断property字段是否是null，用isEmpty更方便，包含了null和空字符串

例子一：
isEqual相当于equals，数字用得多些，一般都是判断状态值
<isEqual property="state" compareValue="0">
< /isEqual>
或
<isEqual property="state" compareProperty="nextState">
< /isEqual>

例子一：

传入的map或者类的属性name等于"1"吗，是就附加and和vvvv = '哈哈'
<isEqual property="name" compareValue="1" prepend="and">
vvvv = '哈哈'
< /isEqual>

传入的map或者类的属性name是null吗，是就附加and和vvvv = null
< isNull property="name" prepend="and">
vvvv = null
< /isNull>

我的应用：

###说明

1. 功能描述

用户可自行设置部分非重要弹出公告的设置。

2. 功能需求

1) 允许用户自行屏蔽“返销公告”，“银行存款通知”，“在线存款通知”三种类型公告。

2) 可在以上三种公告弹出页面上使用复选框设置不再通知此类公告。

3. 界面需求

1) 弹出公告页：

在“返销公告”（ 25 ），“银行存款通知”（ 63 ）及“在线存款通知”（ 64 ）三种类型公告页面上增加复选框“不再弹出此类公告”。

2) 公告提示设置：

可直接对以上三种公告进行屏蔽设置（开启 10| 关闭11）。

4. 业务流程

5. 逻辑需求

用户存储屏蔽状态存储于 t_bussiness_set 中的“返销公告屏蔽”（ sale_back ），“银行存款通知”（remittance_bank ），“在线存款通知”（ remittance_online ）字段。

6. 性能需求

7. 相关模块

8. 数据库相关表

1) T_bussiness_set 商户设置表

2) T_notice 公告表

1.sqlMap

Xml代码

<select id="querySingleModelByOut" parameterClass="com.hanpeng.base.phone.model.TBussinessNotice"
resultClass="com.hanpeng.base.phone.model.TBussinessNotice">
select * from (select row_.*, rownum rownum_ from (
SELECT
i.NOTICE_NUM as noticeNum ,
i.BUSSINESS_ID as bussinessId ,
i.STATE as state ,
i.READ_DATE as readDate ,
n.NOTICE_TITLE as noticeTitle ,
n.NOTICE_INFO as noticeInfo ,
n.CREATE_DATE as createDate ,
n.EMPLOYEE_ID as employeeId ,
n.NOTICE_TYPE as noticeType ,
n.NOTICE_SHOW_TYPE as noticeShowType ,
n.FINISH_DATE as finishDate ,
n.PUBLISH_DATE as publishDate
FROM T_BUSSINESS_NOTICE i left join T_NOTICE n on n.NOTICE_NUM = i.NOTICE_NUM
WHERE
n.PUBLISH_DATE <= sysdate AND n.FINISH_DATE >= sysdate
<isNotEmpty prepend=" AND " property="bussinessId">
i.BUSSINESS_ID = #bussinessId# </isNotEmpty>
<isNotEmpty prepend=" AND " property="state">
i.STATE = #state# </isNotEmpty>
<isNotEmpty prepend=" AND " property="noticeShowType">
n.NOTICE_SHOW_TYPE = #noticeShowType# </isNotEmpty>
<isEqual property="saleBack" compareValue="10" prepend=" AND ">
n.NOTICE_TYPE!='25'</isEqual>
<isEqual property="remittanceBank" compareValue="10" prepend=" AND ">
n.NOTICE_TYPE!='63'</isEqual>
<isEqual property="remittanceOnline" compareValue="10" prepend=" AND ">
n.NOTICE_TYPE!='64'</isEqual>
)row_ where rownum <=1 ) where rownum_>=0
</select>

2.Action

Java代码

/**
* 查询公告弹出
* @return
* @author wwy
* @date 2011-10-13 下午13:35:11
*/
public void queryByOut(){
try {
PrintWriter out = this.getResponse().getWriter();
if(getUserId() != null){
bussinessNotice = noticeService.selectSingleModelByOut("26",getUserId());
if(bussinessNotice==null){
out.print("");
}
else{
out.print("{\"noticeNum\":\""+bussinessNotice.getNoticeNum()+"\"}");
}
}else{
out.print("");
}
} catch (Exception e) {
log.error("弹出式公告查询失败" + e.fillInStackTrace());
}
}

3.serviceImpl

Java代码

public TBussinessNotice selectSingleModelByOut(String state,
String bussinessId) {
TBussinessNotice tbn = new TBussinessNotice();
tbn.setBussinessId(bussinessId);
tbn.setState("17");
tbn.setNoticeShowType(state);
TBussinessSet bussinessSet = BussinessSetService.queryById(bussinessId);//设置状态，sqlMap根据状态isEqual判断
tbn.setSaleBack(bussinessSet.getSaleBack());
tbn.setRemittanceBank(bussinessSet.getRemittanceBank());
tbn.setRemittanceOnline(bussinessSet.getRemittanceOnline());
return bussinessNoticeDao.selectSingleModelByOut(tbn);
}

4.frameTop.jsp

Js代码

<script type="text/javascript">
//弹出公告查询
var autoNotice = setInterval(getNotice,1000*60);
function getNotice(){
clearInterval(autoNotice);
$.ajax({
type:'post',
url:'Notice_queryByOut',
dataType:'json',
success:function(data){
if(data!=null){
$.hpDialog.open('Notice_detailByNotice?initLoadMethod=c&id='+data.noticeNum);
}else{
autoNotice = setInterval(getNotice,1000*60);
}
}
});
}
function noticeCallback(){
getNotice();
}
</script>

5.noticeDetail.jsp

Html代码

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>公告明细</title>
<meta http-equiv="X-UA-Compatible" content="IE=7" />
<%@ include file="/cssBasePage.jsp"%>
<script type="text/javascript" src="<%=path %>/jsp/phone/interaction/notice/noticeDetail.js"></script>
</head>
<body>
<form id="form1">
<div class="jf_tanchu">
<div class="jf_tanchutit">${ bussinessNotice.noticeTitle}</div>
<div class="jf_tanchubox">
<div class="jf_tanchubox_right">
公告类型：<v:dcolor code="${ bussinessNotice.noticeType}"/>    
发布时间：<fmt:formatDate value="${ bussinessNotice.createDate}" pattern="yyyy-MM-dd"/>
</div>
${bussinessNotice.noticeInfo}
</div>
</div>
<s:if test="bussinessNotice.noticeType=='25'||bussinessNotice.noticeType=='63'||bussinessNotice.noticeType=='64'">
<div>
<input type="hidden" name="noticeType" value="${bussinessNotice.noticeType}"/>
<input type="checkbox" id="isSelect" name="isSelect" value="${bussinessNotice.noticeType}" onclick="javascript:noTips();"/>
<label for="isSelect">不再通知此类公告</label>
</div>
</s:if>
</form>
<div class="jf_tanchubot">
<s:if test="initLoadMethod == \"c\" ">
<hp:HpButton TJsClick="var win = $.dialog.open.origin;win.noticeCallback();$.dialog.close();" TValue="confirmed" id=""></hp:HpButton>
</s:if>
<s:else>
<hp:HpButton TJsClick="$.dialog.close();" TValue="close" id=""></hp:HpButton>
</s:else>
</div>
</body>
</html>

6.noticeDetail.js

Js代码

function noTips(){
var formParam = $("#form1").serialize();
$.ajax({
type:'post',
url:'Notice_noTipsNotice',
data:formParam,
cache:false,
dataType:'json',
success:function(data){
}
});
}

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ibatIS中的isNotNull、isEqual、isEmpty用法

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