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原型参数
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<select id="select1" parameterClass="java.lang.String"resultClass="AppLog">
select
ID as id,
TYPE as type,
DESCR as descr
from APP_LOG
where ID = #id#
</select>
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sqlMapper.queryForObject("select0", id);
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Map类参数
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<select id="select2" parameterClass="java.util.HashMap"resultClass="AppLog">
select
ID as id,
TYPE as type,
DESCR as descr
from APP_LOG
where ID = #id#
</select>
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map.put("id", id);
AppLog log = (AppLog) sqlMapper.queryForObject("select0", map);
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对象参数
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<select id="select3" parameterClass="AppLog"resultClass="AppLog">
select
ID as id,
TYPE as type,
DESCR as descr
from APP_LOG
where ID = #id#
</select>
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AppLog p=new AppLog();
p.setId(id);
AppLog log = (AppLog) sqlMapper.queryForObject("select3", p);
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<select id="select0" resultClass="AppLog">
select
ID as id,
TYPE as type,
DESCR as descr
from APP_LOG
where ID = #id#
</select>
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Map参数
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map.put("id", id);
AppLog log = (AppLog) sqlMapper.queryForObject("select0", map);
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String参数
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AppLog log = (AppLog) sqlMapper.queryForObject("select0", id);
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对象参数
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AppLog p=new AppLog();
p.setId(id);
AppLog log = (AppLog) sqlMapper.queryForObject("select0", p);
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动态字段、表
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<select id="selectd" resultClass="java.util.HashMap" parameterClass="java.util.HashMap" remapResults="true">
select $fieldList$
from $table$
where ID = #id#
</select>
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Map p = new HashMap();
p.put("id", id);
p.put("table","APP_LOG");
p.put("fieldList", "ID,TYPE,DESCR");
Map map = (Map) sqlMapper.queryForObject("selectd", p);
String id1 = (String) map.get("ID");
String type = (String) map.get("TYPE");
String descr = (String) map.get("DESCR");
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参数映射方式
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<parameterMap>字段映射方式
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<parameterMap id=”insert-product-param” class=”com.domain.Product”>
<parameter property=”id”/>
<parameter property=”description”/>
</parameterMap>
<insert id=”insertProduct” parameterMap=”insert-product-param”>
insert into PRODUCT (PRD_ID, PRD_DESCRIPTION) values (?,?)
</insert>
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<parameterMap id=”insert-product-param” class=”com.domain.Product”>
<parameter property=”description” />
<parameter property=”id”/>
</parameterMap>
<insert id=”insertProduct” parameterMap=”insert-product-param”>
insert into PRODUCT (PRD_DESCRIPTION, PRD_ID) values (?,?)
</insert>
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parameterMap中属性的顺序与SQL中参数的顺序对应
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Inline Parameter Maps
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<insert id=”insertProduct” parameterClass=”com.domain.Product”>
insert into PRODUCT (PRD_ID, PRD_DESCRIPTION)
values (#id#, #description#)
</insert>
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<insert id=”insertProduct” parameterClass=”com.domain.Product”>
insert into PRODUCT (PRD_ID, PRD_DESCRIPTION)
values (#id:NUMERIC:-999999#, #description:VARCHAR:NO_ENTRY#)
</insert>
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语法
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#propertyName# - OR -
#propertyName:jdbcType# - OR -
#propertyName:jdbcType:nullValue#
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高级语法
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#propertyName,javaType=?,jdbcType=?,mode=?,nullValue=?,handler=?,numericScale=?#
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<procedure id=“callProcedure” parameterClass=”com.mydomain.MyParameter”>
{call MyProcedure
(#parm1,jdbcType=INTEGER,mode=IN#, #parm2,jdbcType=INTEGER,mode=IN#,
#parm3,jdbcType=DECIMAL,mode=OUT,numericScale=2#)}
</procedure>
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