我正在开发一个填充Oracle(11g)数据库的C ++应用程序。此数据库具有包含以下签名的包:
FUNCTION SAVE_CONF
(I_USER IN VARCHAR2
,I_APP IN VARCHAR2
,I_CONTEXT IN VARCHAR2
,O_CFG OUT SYS_REFCURSOR --CLOB
,O_ERROR_MSG OUT VARCHAR2
)
RETURN NUMBER;
但是,我无法在我的应用程序中访问O_CFG refcursor。这就是我定义SQL语句的方式。
OraStmt->setSQL("BEGIN :1 := SCHM.PCK.SAVE_CONF(:2,:3,:4,:5,:6); END;");
OraStmt->registerOutParam(1, OCCIINT);
OraStmt->setString(2, User.GetBuffer(0));
OraStmt->setString(3, App.GetBuffer(0));
OraStmt->setString(4, Context.GetBuffer(0));
OraStmt->registerOutParam(5,OCCICLOB);
OraStmt->registerOutParam(6,OCCISTRING,32767);
OraStmt->setAutoCommit(FALSE);
OraStmt->executeQuery();
但是,我无法定义第5个参数数据类型。我已经尝试过使用OCCICURSOR,OCCIREF和许多其他数据类型。
执行指令executeQuery()
时,将使用ORA-6550抛出oracle :: occi :: SQLException。该ORA建议参数类型不匹配。
我以前曾在CLOB中写作,但从未通过REFCURSOR。
答案 0 :(得分:0)
经过一些测试,解决方案是使用ResultSet作为中间。
OraStmt->setSQL("BEGIN :1 := SCHM.PCK.SAVE_CONF(:2,:3,:4,:5,:6); END;");
OraStmt->registerOutParam(1, OCCIINT);
OraStmt->setString(2, User.GetBuffer(0));
OraStmt->setString(3, App.GetBuffer(0));
OraStmt->setString(4, Context.GetBuffer(0));
OraStmt->registerOutParam(5,OCCICLOB);
OraStmt->registerOutParam(6,OCCISTRING,32767);
OraStmt->setAutoCommit(FALSE);
OraStmt->executeUpdate();
ResultSet *rs;
rs = OraStmt->getCursor(5);
rs->next();
Clob cLob = rs->getClob(1);
char *pBuffer = static_cast<char *>(Configuration.GetBuffer(0));
int remaining = Configuration.GetLength();
int written = 0;
int pos = 0;
do
{
written = cLob.writeChunk(remaining, (unsigned char *)&pBuffer[pos], remaining, 1);
pos += written;
remaining -= written;
}
while(remaining > 0);
OraStmt->closeResultSet(rs);