ibaties 动态拼接

动态拼接实例，这样不用写存储过程也能实现灵活拼接，注意这里用了isEqual标签

01.<?xml version="1.0" encoding="UTF-8"?>  
02.<!DOCTYPE sqlMap PUBLIC "-//ibatis.apache.org//DTD SQL Map 2.0//EN"   
03.    "http://ibatis.apache.org/dtd/sql-map-2.dtd">  
04.<sqlMap namespace="commons">  
05.    <!-- 定义综合查询前缀，后缀sql -->  
06.    <sql id="prefixSql">  
07.        <dynamic>  
08.            <isEqual property="doCount" compareValue="true">  
09.                select count(*) from (  
10.            </isEqual>  
11.            <isEqual property="doCount" compareValue="false">  
12.                SELECT * FROM (select row_.*, rownum start_rownum_ from  
13.                (  
14.            </isEqual>  
15.        </dynamic>  
16.    </sql>  
17.    <sql id="suffixSql">  
18.        <dynamic>  
19.            <isEqual property="doCount" compareValue="true">)</isEqual>  
20.            <isEqual property="doCount" compareValue="false">  
21.                <![CDATA[ 
22.                    ) row_ WHERE rownum <= #startIndex# + #pageSize# )  WHERE start_rownum_ > #startIndex#     
23.                ]]>  
24.            </isEqual>  
25.        </dynamic>  
26.    </sql>  
27.    <sql id="countPrefix">select count(*) from (</sql>  
28.    <sql id="countSuffix">)</sql>  
29.    <sql id="pagePrefix">  
30.        <dynamic>  
31.            <isNotNull property="pageSize">  
32.                SELECT * FROM ( select rownum r, union_tb.* from (  
33.            </isNotNull>  
34.        </dynamic>  
35.    </sql>  
36.    <sql id="pageSuffix">  
37.        <dynamic>  
38.            <isNotNull property="pageSize">  
39.                <![CDATA[ 
40.                    ) union_tb  
41.                ) WHERE r > #startIndex# AND r <= #startIndex# + #pageSize# 
42.                ]]>  
43.            </isNotNull>  
44.        </dynamic>  
45.    </sql>  
46.</sqlMap>