http://blog.csdn.net/fy_kenny/archive/2008/04/30/2350586.aspx
全部是针对Microsoft SQL Server 2000的Stored Procedure的例子:
参照《iBATIS in Action》书写:
1. max_in_example
Stored Procedure:
CREATE PROCEDURE [dbo].[max_in_example]
@a INTEGER = 0 OUTPUT,
@b INTEGER = 0 OUTPUT,
@c INTEGER = 0 OUTPUT
AS
BEGIN
IF (@a > @b)
SET @c = @a
ELSE
SET @c = @b
RETURN @c
END
GO
SqlMap:
<parameterMap id="pm_in_example" class="java.util.Map">
<parameter property="c" javaType="int" jdbcType="INTEGER"
mode="OUT" />
<parameter property="a" javaType="int" jdbcType="INTEGER" />
<parameter property="b" javaType="int" jdbcType="INTEGER" />
</parameterMap>
<procedure id="in_example" parameterMap="pm_in_example"
resultClass="int">
{ ? = call max_in_example(?, ?) }
</procedure>
Java Code:
publicstatic Integer getMax_in_example(int a, int b) throws SQLException {
Map<String, Integer> m = new HashMap<String, Integer>(2);
m.put("a", new Integer(a));
m.put("b", new Integer(b));
m.put("c", new Integer(0));
//执行存储过程in_example
sqlMapper.queryForObject("in_example", m);
return m.get("c");
}
2. swap
Stored Procedure:
CREATE PROCEDURE [dbo].[swap]
@a INTEGER OUTPUT,
@b INTEGER OUTPUT
AS
BEGIN
DECLARE @temp INTEGER
SET @temp = @a
SET @a = @b
SET @b = @temp
END
GO
SqlMap:
<parameterMap id="swapProcedureMap" class="java.util.Map">
<parameter property="a" javaType="int" jdbcType="INTEGER"
mode="INOUT" />
<parameter property="b" javaType="int" jdbcType="INTEGER"
mode="INOUT" />
</parameterMap>
<procedure id="swapProcedure" parameterMap="swapProcedureMap">
{ call swap(?, ?) }
</procedure>
Java Code:
publicstatic Map swap(int a, int b) throws SQLException {
Map<String, Integer> m = new HashMap<String, Integer>(2);
m.put("a", new Integer(a));
m.put("b", new Integer(b));
//执行存储过程swap
sqlMapper.queryForObject("swapProcedure", m);
return m;
}
3. maximum
Stored Procedure:
CREATE PROCEDURE [dbo].[maximum]
@a INT OUTPUT,
@b INT OUTPUT,
@c INT OUTPUT
AS
BEGIN
IF(@a > @b)
SET @c = @a
IF(@b >= @a)
SET @c = @b
END
GO
SqlMap:
<parameterMap id="maxOutProcedureMap" class="java.util.Map">
<parameter property="a" mode="IN" />
<parameter property="b" mode="IN" />
<parameter property="c" jdbcType="INTEGER" mode="OUT" />
</parameterMap>
<procedure id="maxOutProcedure"parameterMap="maxOutProcedureMap">
{ call maximum (?, ?, ?) }
</procedure>
Java Code:
publicstatic Integer maximum(int a, int b) throws SQLException {
Map<String, Integer> m = new HashMap<String, Integer>(2);
m.put("a", new Integer(a));
m.put("b", new Integer(b));
m.put("c", new Integer(0));
//执行存储过程maximum
sqlMapper.queryForObject("maxOutProcedure", m);
return m.get("c");
}
以上的Java Code类方法都是写在相应的ProcedureDAOImpl类中,可以通过ProcedureDAOImpl类调用相应得方法和传入对应参数来与数据库存储过程交互。
注意:在SqlMap.xml文件中<parameterMap>中参数的顺序跟<Procedure>中”?”的顺序一致。
如:a, b, c; ? = procedurename(?, ?) 则,第一个问号表示a,依次类推。
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