我想调用一个存储过程,它有一个类型为 TABLE
的参数。
如何在 Windows C++ 应用程序中使用 OCCI
(11g1) 执行此操作?
下面是存储过程的定义:
FUNCTION am_send(
p_caFnr IN VARCHAR2,
p_TabBgr IN DSKS_BGR_TAB,
p_caTextout OUT VARCHAR2)
RETURN NUMBER;
以及使用的类型:
create or replace
TYPE DSKS_BGR_TAB,
AS TABLE OF DSKS_BGR
create or replace
TYPE DSKS_BGR
(BgrNr VARCHAR2(3),
TrId VARCHAR2(8))
到目前为止我做了什么:
我使用 OTT 实用程序创建了类型 DSKS_BGR
的对象表示。
到目前为止我的代码:
Environment* env = Environment::createEnvironment(Environment::OBJECT);
try
{
Connection *con = env->createConnection("xxxxx", "xxxxx", "xxxxx");
Statement* statement = con->createStatement("BEGIN :1 := am_send(:2, :3, :4); END;");
statement->registerOutParam(1, OCCINUMBER);
statement->setString(2, "Test");
// ?? DSKS_BGR_TAB
statement->registerOutParam(4, OCCISTRING, 1000);
statement->execute();
int result = statement->getNumber(1);
string textOut = statement->getString(4);
env->terminateConnection(con);
}
catch(const SQLException &exc)
{
cout << exc.getErrorCode() << exc.getMessage();
}
Environment::terminateEnvironment(env);
我不知道如何设置TABLE
参数。
你快到了!
-
使用对象类型转换器实用程序 OTT 创建预言机类型的对象表示形式
-
创建指向 OTT 创建类型的指针
vector
,并在语句上使用 OCCI 调用setVector()
-
Execute
!
下面是一个小代码示例:
#include <occi.h>
#include <iostream>
#include "RegisterMappings.h"
using namespace oracle::occi;
using namespace std;
void callproc(Connection *con)
{
vector<my_obj_t *> vect;
int i;
for (i=0; i<10; i++)
{
my_obj_t *obj = new my_obj_t();
obj->setid(i);
obj->setname("TEST");
vect.push_back(obj);
}
cout << "ncallproc - invoking a PL/SQL procedure with parameters" << endl;
Statement *stmt = con->createStatement("BEGIN my_proc(:1); END;");
cout << "nExecuting the block :" << stmt->getSQL() << endl;
setVector(stmt, 1, vect, "MY_OBJ_TAB_T");
stmt->execute();
con->terminateStatement (stmt);
cout << "nocciproc - done" << endl;
// delete allocated memory
for (i=0; i<10; i++)
{
delete vect[i];
}
}
// end of callproc ()
int main()
{
try {
Environment* env = Environment::createEnvironment(Environment::OBJECT);
RegisterMappings(env);
Connection* conn = env->createConnection("scott","tiger");
callproc(conn); conn->commit();
env->terminateConnection(conn);
Environment::terminateEnvironment(env);
}
catch(SQLException &ex)
{
cout << ex.getMessage() << endl;
}
}