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Added a check for a '.' in the column name before prepending a table name to the column name to avoid incorrect TABLE.COLUMN names when using a FROM clause

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SF PATCH#766404 - SetColNull() was not correctly setting CbValue = SQL_NULL_DATA so that NULL columns still appeared to have data in some cases

Cleaned up some internal variable naming conventions


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@22589 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
George Tasker 2003-08-04 18:55:01 +00:00
parent d8692f2b80
commit e7c9692f16
1 changed files with 49 additions and 38 deletions
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87
src/common/dbtable.cpp
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@ -24,6 +24,7 @@
// SYNOPSIS START
// SYNOPSIS STOP
*/
#ifdef __GNUG__
#pragma implementation "dbtable.h"
#endif
@ -57,7 +58,6 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
//#include <assert.h>
#include "wx/dbtable.h"
@ -80,6 +80,16 @@ ULONG lastTableID = 0;
#endif
void csstrncpyt(char *target, const char *source, int n)
{
while ( (*target++ = *source++) != '\0' && --n )
;
*target = '\0';
}
/********** wxDbColDef::wxDbColDef() Constructor **********/
wxDbColDef::wxDbColDef()
{
@ -1031,17 +1041,17 @@ void wxDbTable::BuildSelectStmt(wxString &pSqlStmt, int typeOfSelect, bool disti
// Add the column list
int i;
wxString tStr;
for (i = 0; i < noCols; i++)
{
tStr = colDefs[i].ColName;
// If joining tables, the base table column names must be qualified to avoid ambiguity
if (appendFromClause || pDb->Dbms() == dbmsACCESS)
if ((appendFromClause || pDb->Dbms() == dbmsACCESS) && !tStr.Find(wxT('.')))
{
pSqlStmt += pDb->SQLTableName(queryTableName.c_str());
// pSqlStmt += queryTableName;
pSqlStmt += wxT(".");
}
pSqlStmt += pDb->SQLColumnName(colDefs[i].ColName);
// pSqlStmt += colDefs[i].ColName;
if (i + 1 < noCols)
pSqlStmt += wxT(",");
}
@ -1230,56 +1240,59 @@ void wxDbTable::BuildWhereClause(wxString &pWhereClause, int typeOfWhere,
wxString colValue;
// Loop through the columns building a where clause as you go
int i;
for (i = 0; i < noCols; i++)
int colNo;
for (colNo = 0; colNo < noCols; colNo++)
{
// Determine if this column should be included in the WHERE clause
if ((typeOfWhere == DB_WHERE_KEYFIELDS && colDefs[i].KeyField) ||
(typeOfWhere == DB_WHERE_MATCHING && (!IsColNull(i))))
if ((typeOfWhere == DB_WHERE_KEYFIELDS && colDefs[colNo].KeyField) ||
(typeOfWhere == DB_WHERE_MATCHING && (!IsColNull(colNo))))
{
// Skip over timestamp columns
if (colDefs[i].SqlCtype == SQL_C_TIMESTAMP)
if (colDefs[colNo].SqlCtype == SQL_C_TIMESTAMP)
continue;
// If there is more than 1 column, join them with the keyword "AND"
if (moreThanOneColumn)
pWhereClause += wxT(" AND ");
else
moreThanOneColumn = TRUE;
// Concatenate where phrase for the column
if (qualTableName.Length())
wxString tStr = colDefs[colNo].ColName;
if (qualTableName.Length() && !tStr.Find(wxT('.')))
{
pWhereClause += pDb->SQLTableName(qualTableName);
// pWhereClause += qualTableName;
pWhereClause += wxT(".");
}
pWhereClause += pDb->SQLColumnName(colDefs[i].ColName);
// pWhereClause += colDefs[i].ColName;
if (useLikeComparison && (colDefs[i].SqlCtype == SQL_C_CHAR))
pWhereClause += pDb->SQLColumnName(colDefs[colNo].ColName);
if (useLikeComparison && (colDefs[colNo].SqlCtype == SQL_C_CHAR))
pWhereClause += wxT(" LIKE ");
else
pWhereClause += wxT(" = ");
switch(colDefs[i].SqlCtype)
switch(colDefs[colNo].SqlCtype)
{
case SQL_C_CHAR:
colValue.Printf(wxT("'%s'"), (UCHAR FAR *) colDefs[i].PtrDataObj);
colValue.Printf(wxT("'%s'"), (UCHAR FAR *) colDefs[colNo].PtrDataObj);
break;
case SQL_C_SSHORT:
colValue.Printf(wxT("%hi"), *((SWORD *) colDefs[i].PtrDataObj));
colValue.Printf(wxT("%hi"), *((SWORD *) colDefs[colNo].PtrDataObj));
break;
case SQL_C_USHORT:
colValue.Printf(wxT("%hu"), *((UWORD *) colDefs[i].PtrDataObj));
colValue.Printf(wxT("%hu"), *((UWORD *) colDefs[colNo].PtrDataObj));
break;
case SQL_C_SLONG:
colValue.Printf(wxT("%li"), *((SDWORD *) colDefs[i].PtrDataObj));
colValue.Printf(wxT("%li"), *((SDWORD *) colDefs[colNo].PtrDataObj));
break;
case SQL_C_ULONG:
colValue.Printf(wxT("%lu"), *((UDWORD *) colDefs[i].PtrDataObj));
colValue.Printf(wxT("%lu"), *((UDWORD *) colDefs[colNo].PtrDataObj));
break;
case SQL_C_FLOAT:
colValue.Printf(wxT("%.6f"), *((SFLOAT *) colDefs[i].PtrDataObj));
colValue.Printf(wxT("%.6f"), *((SFLOAT *) colDefs[colNo].PtrDataObj));
break;
case SQL_C_DOUBLE:
colValue.Printf(wxT("%.6f"), *((SDOUBLE *) colDefs[i].PtrDataObj));
colValue.Printf(wxT("%.6f"), *((SDOUBLE *) colDefs[colNo].PtrDataObj));
break;
}
pWhereClause += colValue;
@ -2481,7 +2494,10 @@ bool wxDbTable::SetColNull(UWORD colNo, bool set)
{
colDefs[colNo].Null = set;
if (set) // Blank out the values in the member variable
ClearMemberVar(colNo,FALSE); // Must call with FALSE, or infinite recursion will happen
{
colDefs[colNo].CbValue = SQL_NULL_DATA; // SF PATCH#766404
ClearMemberVar(colNo,FALSE); // Must call with FALSE, or infinite recursion will happen
}
return(TRUE);
}
else
@ -2493,18 +2509,21 @@ bool wxDbTable::SetColNull(UWORD colNo, bool set)
/********** wxDbTable::SetColNull() **********/
bool wxDbTable::SetColNull(const wxString &colName, bool set)
{
int i;
for (i = 0; i < noCols; i++)
int colNo;
for (colNo = 0; colNo < noCols; colNo++)
{
if (!wxStricmp(colName, colDefs[i].ColName))
if (!wxStricmp(colName, colDefs[colNo].ColName))
break;
}
if (i < noCols)
if (colNo < noCols)
{
colDefs[i].Null = set;
colDefs[colNo].Null = set;
if (set) // Blank out the values in the member variable
ClearMemberVar(i,FALSE); // Must call with FALSE, or infinite recursion will happen
{
colDefs[colNo].CbValue = SQL_NULL_DATA; // SF PATCH#766404
ClearMemberVar(colNo,FALSE); // Must call with FALSE, or infinite recursion will happen
}
return(TRUE);
}
else
@ -2600,7 +2619,7 @@ void wxDbTable::SetRowMode(const rowmode_t rowmode)
SetCursor(hstmtDefault);
break;
default:
assert(0);
wxASSERT(0);
}
} // wxDbTable::SetRowMode()
@ -2656,14 +2675,6 @@ wxVariant wxDbTable::GetCol(const int colNo) const
} // wxDbTable::GetCol()
void csstrncpyt(char *s, const char *t, int n)
{
while ( (*s++ = *t++) != '\0' && --n )
;
*s = '\0';
}
void wxDbTable::SetCol(const int colNo, const wxVariant val)
{
//FIXME: Add proper wxDateTime support to wxVariant..