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- cleaning code and show some functions return code

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modified:
  storage/connect/odbconn.cpp
This commit is contained in:
Olivier Bertrand
2013-07-11 17:44:15 +02:00
parent b3ad9a97e9
commit d24e1fc82a
1 changed files with 22 additions and 263 deletions
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285
storage/connect/odbconn.cpp
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@@ -1209,20 +1209,19 @@ int ODBConn::ExecDirectSQL(char *sql, ODBCCOL *tocols)
RETCODE rc;
HSTMT hstmt;
//m_Recset = new(m_G) RECSET(this);
//ASSERT(m_Recset);
try {
b = false;
if (m_hstmt) {
/*RETCODE rc;*/
// All this did not seems to make sense and was been commented out
// if (IsOpen())
// Close(SQL_CLOSE);
/*rc =*/ SQLFreeStmt(m_hstmt, SQL_CLOSE);
rc = SQLFreeStmt(m_hstmt, SQL_CLOSE);
if (trace && !Check(rc))
htrc("Error: SQLFreeStmt rc=%d\n", rc);
hstmt = m_hstmt;
m_hstmt = NULL;
ThrowDBX(MSG(SEQUENCE_ERROR));
@@ -1339,7 +1338,6 @@ int ODBConn::GetResultSize(char *sql, ODBCCOL *colp)
} // endfor n
} catch(DBX *x) {
// strcpy(m_G->Message, x->m_ErrMsg[0]);
strcpy(m_G->Message, x->GetErrorMessage(0));
if (trace)
@@ -1515,7 +1513,6 @@ bool ODBConn::BindParam(ODBCCOL *colp)
#endif // 0
buf = colp->GetBuffer(0);
// len = colp->GetBuflen();
len = IsTypeNum(colp->GetResultType()) ? 0 : colp->GetBuflen();
ct = GetSQLCType(colp->GetResultType());
sqlt = GetSQLType(colp->GetResultType());
@@ -1579,7 +1576,6 @@ bool ODBConn::GetDataSources(PQRYRES qrp)
rv = true;
} // end try/catch
//SQLFreeEnv(m_henv);
Close();
return rv;
} // end of GetDataSources
@@ -1631,7 +1627,6 @@ bool ODBConn::GetDrivers(PQRYRES qrp)
rv = true;
} // end try/catch
//SQLFreeEnv(m_henv);
Close();
return rv;
} // end of GetDrivers
@@ -1800,7 +1795,6 @@ int ODBConn::GetCatInfo(CATPARM *cap)
} else // ODBC Ver 3
rc = SQLFetch(hstmt);
// if (!Check(rc))
if (rc == SQL_NO_DATA_FOUND) {
if (cap->Pat)
sprintf(m_G->Message, MSG(NO_TABCOL_DATA), cap->Tab, cap->Pat);
@@ -1836,270 +1830,35 @@ int ODBConn::GetCatInfo(CATPARM *cap)
/***********************************************************************/
void ODBConn::Close()
{
/*RETCODE rc;*/
#if 0
// Close any open recordsets
AfxLockGlobals(CRIT_ODBC);
TRY
{
while (!m_listRecordsets.IsEmpty())
{
CRecordset* pSet = (CRecordset*)m_listRecordsets.GetHead();
pSet->Close(); // will implicitly remove from list
pSet->m_pDatabase = NULL;
}
}
CATCH_ALL(e)
{
AfxUnlockGlobals(CRIT_ODBC);
THROW_LAST();
}
END_CATCH_ALL
AfxUnlockGlobals(CRIT_ODBC);
#endif // 0
RETCODE rc;
if (m_hstmt) {
// Is required for multiple tables
/*rc =*/ SQLFreeStmt(m_hstmt, SQL_DROP);
rc = SQLFreeStmt(m_hstmt, SQL_DROP);
m_hstmt = NULL;
} // endif m_hstmt
if (m_hdbc != SQL_NULL_HDBC) {
/*rc =*/ SQLDisconnect(m_hdbc);
/*rc =*/ SQLFreeConnect(m_hdbc);
m_hdbc = SQL_NULL_HDBC;
rc = SQLDisconnect(m_hdbc);
// AfxLockGlobals(CRIT_ODBC);
// ASSERT(m_nAlloc != 0);
// m_nAlloc--;
// AfxUnlockGlobals(CRIT_ODBC);
if (trace && rc != SQL_SUCCESS)
htrc("Error: SQLDisconnect rc=%d\n", rc);
rc = SQLFreeConnect(m_hdbc);
if (trace && rc != SQL_SUCCESS)
htrc("Error: SQLFreeConnect rc=%d\n", rc);
m_hdbc = SQL_NULL_HDBC;
} // endif m_hdbc
if (m_henv != SQL_NULL_HENV) {
if (trace) {
RETCODE rc = SQLFreeEnv(m_henv);
if (rc != SQL_SUCCESS) // Nothing we can do
htrc("Error: SQLFreeEnv failure ignored in Close\n");
} else
SQLFreeEnv(m_henv);
rc = SQLFreeEnv(m_henv);
m_henv = SQL_NULL_HENV;
if (trace && rc != SQL_SUCCESS) // Nothing we can do
htrc("Error: SQLFreeEnv failure ignored in Close\n");
m_henv = SQL_NULL_HENV;
} // endif m_henv
} // end of Close
#if 0
// Silently disconnect and free all ODBC resources.
// Don't throw any exceptions
void ODBConn::Free()
{
// Trap failures upon close
try {
Close();
} catch(DBX*) {
// Nothing we can do
if (trace)
htrc("Error: exception by Close ignored in Free\n");
// DELETE_EXCEPTION(x);
} // endcatch
// free henv if refcount goes to 0
//AfxLockGlobals(CRIT_ODBC);
if (m_henv != SQL_NULL_HENV) {
ASSERT(m_nAlloc >= 0);
if (m_nAlloc == 0) {
// free last connection - release HENV
if (trace) {
RETCODE rc = SQLFreeEnv(m_henv);
if (rc != SQL_SUCCESS) // Nothing we can do
htrc("Error: SQLFreeEnv failure ignored in Free\n");
} else
SQLFreeEnv(m_henv);
m_henv = SQL_NULL_HENV;
} // endif m_nAlloc
} // endif m_henv
//AfxUnlockGlobals(CRIT_ODBC);
} // end of Free
//////////////////////////////////////////////////////////////////////////////
// CRecordset helpers
//id AFXAPI AfxSetCurrentRecord(int* plCurrentRecord, int nRows, RETCODE nRetCode);
//id AFXAPI AfxSetRecordCount(int* plRecordCount, int lCurrentRecord,
//bool bEOFSeen, RETCODE nRetCode);
/***********************************************************************/
/* RECSET class implementation */
/***********************************************************************/
RECSET::RECSET(ODBConn *dbcp)
{
m_pDB = dbcp;
m_hstmt = SQL_NULL_HSTMT;
m_OpenType = snapshot;
m_Options = none;
#if 0
m_lOpen = AFX_RECORDSET_STATUS_UNKNOWN;
m_nEditMode = noMode;
m_nDefaultType = snapshot;
m_bAppendable = false;
m_bUpdatable = false;
m_bScrollable = false;
m_bRecordsetDb = false;
m_bRebindParams = false;
m_bLongBinaryColumns = false;
m_nLockMode = optimistic;
m_dwInitialGetDataLen = 0;
m_rgODBCFieldInfos = NULL;
m_rgFieldInfos = NULL;
m_rgRowStatus = NULL;
m_dwRowsetSize = 25;
m_dwAllocatedRowsetSize = 0;
m_nFields = 0;
m_nParams = 0;
m_nFieldsBound = 0;
m_lCurrentRecord = AFX_CURRENT_RECORD_UNDEFINED;
m_lRecordCount = 0;
m_bUseUpdateSQL = false;
m_bUseODBCCursorLib = false;
m_nResultCols = -1;
m_bCheckCacheForDirtyFields = true;
m_pbFieldFlags = NULL;
m_pbParamFlags = NULL;
m_plParamLength = NULL;
m_pvFieldProxy = NULL;
m_pvParamProxy = NULL;
m_nProxyFields = 0;
m_nProxyParams = 0;
m_hstmtUpdate = SQL_NULL_HSTMT;
#endif // 0
} // end of RECSET constructor
RECSET::~RECSET()
{
try {
if (m_hstmt) {
if (trace && (m_dwOptions & useMultiRowFetch)) {
htrc("WARNING: Close called implicitly from destructor\n");
htrc("Use of multi row fetch requires explicit call\n");
htrc("to Close or memory leaks will result\n");
} // endif trace
Close();
} // endif m_hstmt
// if (m_bRecordsetDb)
// delete m_pDB; ??????
m_pDB = NULL;
} catch(DBX*) {
// Nothing we can do
if (trace)
htrc("Error: Exception ignored in ~RECSET\n");
} // endtry/catch
} // end of ~RECSET
/***********************************************************************/
/* Open: this function does the following: */
/* Allocates the hstmt, */
/* Bind columns, */
/* Execute the SQL statement */
/***********************************************************************/
bool RECSET::Open(PSZ sql, uint Type, DWORD options)
{
ASSERT(m_pDB && m_pDB->IsOpen());
ASSERT(Type == DB_USE_DEFAULT_TYPE || Type == dynaset ||
Type == snapshot || Type == forwardOnly || Type == dynamic);
//ASSERT(!(options & readOnly && options & appendOnly));
// Cache state info and allocate hstmt
SetState(Type, sql, options);
try {
if (m_hstmt) {
if (IsOpen())
Close(SQL_CLOSE);
} else {
RETCODE rc = SQLAllocStmt(m_pDB->m_hdbc, &m_hstmt);
if (!Check(rc))
ThrowDBException(SQL_INVALID_HANDLE);
} // endif m_hstmt
m_pDB->OnSetOptions(m_hstmt);
// Allocate the field/param status arrays, if necessary
// bool bUnbound = false;
// if (m_nFields > 0 || m_nParams > 0)
// AllocStatusArrays();
// else
// bUnbound = true;
// Build SQL and prep/execute or just execute direct
// BuildSQL(sql);
PrepareAndExecute(sql);
// Cache some field info and prepare the rowset
AllocAndCacheFieldInfo();
AllocRowset();
// If late binding, still need to allocate status arrays
// if (bUnbound && (m_nFields > 0 || m_nParams > 0))
// AllocStatusArrays();
} catch(DBX *x) {
Close(SQL_DROP);
// strcpy(m_pDB->m_G->Message, x->GetErrorMessage[0]);
strcpy(m_pDB->m_G->Message, x->GetErrorMessage(0));
return true;
} // endtry/catch
return false;
} // end of Open
/***********************************************************************/
/* Close a hstmt. */
/***********************************************************************/
void RECSET::Close(SWORD option)
{
if (m_hstmt != SQL_NULL_HSTMT) {
RETCODE rc = SQLFreeStmt(m_hstmt, option);
if (option == SQL_DROP)
m_hstmt = SQL_NULL_HSTMT;
} // endif m_hstmt
#if 0
m_lOpen = RECORDSET_STATUS_CLOSED;
m_bBOF = true;
m_bEOF = true;
m_bDeleted = false;
m_bAppendable = false;
m_bUpdatable = false;
m_bScrollable = false;
m_bRebindParams = false;
m_bLongBinaryColumns = false;
m_nLockMode = optimistic;
m_nFieldsBound = 0;
m_nResultCols = -1;
#endif // 0
} // end of Close
#endif // 0