我一直在谷歌搜索一段时间,似乎无法找到任何真正的答案。
我有一个Oracle存储过程,它有许多in参数,其类型是表rowtype的表。例如:
在pacakge中声明:
TYPE param1_type_t IS TABLE OF table1%ROWTYPE;
TYPE param2_type_t IS TABLE OF table2%ROWTYPE;
TYPE param3_type_t IS TABLE OF table3%ROWTYPE;
Oracle程序:
PROCEDURE my_proc
(
parameter1 IN param1_type_t,
parameter2 IN param2_type_t,
parameter3 IN param3_type_t
)
在java方面,我有3个对应的对象列表,表示用Java填充的每个参数。在这种情况下,是否可以使用MyBatis调用Oracle过程?
<update id="callOracleSP" statementType="CALLABLE">
{CALL my_proc( #{param1, mode=IN},
#{param2, mode=IN},
#{param3, mode=IN}
)
}
</update>
对象本身是具有String和Integer属性的简单VO以及它们各自的getter和setter。
我不确定如何继续。我是否需要以某种方式将Java对象列表映射到Oracle类型?
答案 0 :(得分:8)
我无法判断您是否已经这样做,但您需要定义Oracle对象。
CREATE OR REPLACE TYPE SCHEMA."YOUR_OBJECT" AS OBJECT
(
field_one varchar2(50),
field_two varchar2(100)
);
/
CREATE OR REPLACE TYPE SCHEMA."YOUR_OBJECT_ARRAY" AS TABLE OF YOUR_OBJECT;
/
然后,您可以编写类型处理程序以将Java对象映射到Oracle对象。
import oracle.sql.ARRAY;
import oracle.sql.ArrayDescriptor;
import oracle.sql.STRUCT;
import oracle.sql.StructDescriptor;
....
public class YourTypeHandler implements TypeHandler
{
....
public void setParameter(PreparedStatement ps, int i, Object parameter, JdbcType jdbcType) throws SQLException
{
List<YourObject> objects = (List<YourObject>) parameter;
StructDescriptor structDescriptor = StructDescriptor.createDescriptor("YOUR_OBJECT", ps.getConnection());
STRUCT[] structs = new STRUCT[objects.size()];
for (int index = 0; index < objects.size(); index++)
{
YourObject pack = packs.get(index);
Object[] params = new Object[2];
params[0] = pack.getFieldOne();
params[1] = pack.getFieldTwo();
STRUCT struct = new STRUCT(structDescriptor, ps.getConnection(), params);
structs[index] = struct;
}
ArrayDescriptor desc = ArrayDescriptor.createDescriptor("YOUR_OBJECT_ARRAY", ps.getConnection());
ARRAY oracleArray = new ARRAY(desc, ps.getConnection(), structs);
ps.setArray(i, oracleArray);
}
}
然后调用过程
call your_proc
(
#{yourObjects, javaType=Object, jdbcType=ARRAY, jdbcTypeName=YOUR_OBJECT_ARRAY, mode=IN, typeHandler=YourObjectArrayTypeHandler}
)
答案 1 :(得分:0)
Andy Pryor的回答非常好我测试了它确实有效。但它在typeHandler上有错误:
call your_proc
(
#{yourObjects, javaType=Object, jdbcType=ARRAY, jdbcTypeName=YOUR_OBJECT_ARRAY, mode=IN, typeHandler=YourObjectArrayTypeHandler}
)
应该是:
call your_proc
(
#{yourObjects, javaType=Object, jdbcType=ARRAY, jdbcTypeName=YOUR_OBJECT_ARRAY, mode=IN, typeHandler=YourTypeHandler}
)
TypeHandler也有错误:(没有“包”,我的版本中的方法参数有一些差异)
@Override
public void setParameter(PreparedStatement ps, int i, Object parameter, String arg3) throws SQLException {
List<YourObject> objects = (List<YourObject>) parameter;
StructDescriptor structDescriptor = StructDescriptor.createDescriptor("YOUR_OBJECT", ps.getConnection());
STRUCT[] structs = new STRUCT[objects.size()];
for (int index = 0; index < objects.size(); index++)
{
YourObject pack = objects.get(index);
Object[] params = new Object[2];
params[0] = pack.getFieldOne();
params[1] = pack.getFieldTwo();
STRUCT struct = new STRUCT(structDescriptor, ps.getConnection(), params);
structs[index] = struct;
}
ArrayDescriptor desc = ArrayDescriptor.createDescriptor("YOUR_OBJECT_ARRAY", ps.getConnection());
ARRAY oracleArray = new ARRAY(desc, ps.getConnection(), structs);
ps.setArray(i, oracleArray);
}
以下是xml映射的示例:
<parameterMap id="updateHierPersonAssignMap" class="java.util.Map" >
<parameter property="p_array" jdbcType="ARRAY" javaType="Object" mode="IN" typeHandler="com.aamtech.ria.model.domain.typehandler.YourTypeHandler"/>
</parameterMap>
<procedure id="updateHierPersonAssign" parameterMap="updateHierPersonAssignMap" >
<![CDATA[
{ call ria_am_util_pkg.j_update_hier_person_assign( ? ) }
]]>
</procedure>
以下是你如何从DAO中调用它:
public void update(List array) {
Map<String, Object> queryParams = new HashMap<String, Object>();
queryParams.put("p_array", array);
try {
client.update("HashMapResult.updateHierPersonAssign", queryParams);
} catch (SQLException e) {
}
}
我的程序看起来像这样(它只是在测试表中插入一行):
Procedure j_update_hier_person_assign (p_array IN YOUR_OBJECT_ARRAY) is
begin
FOR i IN 1..p_array.count LOOP
--dbms_output.put_line();
insert into test (a) values (p_array(i).field_one);
END LOOP;
end;