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Added what I think is full support for Null column values in the tables, partially based on submissions by Roger Gammans

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Added a parameters to wxDbTable::Open() to indicate whether Open() should check for table privileges or not.
wxDbTable::ClearMemberVar() added to set a single column to an initialized value
::ClearMemberVar() and ::ClearMemberVars() can now optionally set a column to be NULL via ::SetColNull()
::SetColNull() added as the primary function name for setting a column to be a NULL value, and ::SetNull() is deprecated
::SetColNull() now has a param to select whether a columns value is NULL or not.
::SetColNull() will now clear the column value in memory when setting the column to be NULL.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@8767 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
George Tasker
2000-11-22 00:18:45 +00:00
parent 3988b155d7
commit f02d4a64a1
2 changed files with 181 additions and 82 deletions
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15
include/wx/dbtable.h
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@@ -184,7 +184,7 @@ public:
const char *qryTblName = 0, bool qryOnly = !wxDB_QUERY_ONLY, const char *tblPath="");
virtual ~wxDbTable();
bool Open(void);
bool Open(bool checkPrivileges=FALSE);
bool CreateTable(bool attemptDrop=TRUE);
bool DropTable(void);
bool CreateIndex(const char * idxName, bool unique, int noIdxCols, wxDbIdxDef *pIdxDefs, bool attemptDrop=TRUE);
@@ -266,7 +266,8 @@ public:
#endif
bool CanSelectForUpdate(void);
bool CanUpdByROWID(void);
void ClearMemberVars(void);
void ClearMemberVar(int colNo, bool setToNull=FALSE);
void ClearMemberVars(bool setToNull=FALSE);
bool SetQueryTimeout(UDWORD nSeconds);
wxDbColDef *GetColDefs() { return colDefs; }
@@ -289,9 +290,13 @@ public:
int DB_STATUS(void) { return(pDb->DB_STATUS); }
bool IsColNull(int colNo);
bool SetNull(int colNo);
bool SetNull(const char *colName);
bool SetColNull(int colNo, bool set=TRUE);
bool SetColNull(const char *colName, bool set=TRUE);
#if wxODBC_BACKWARD_COMPATABILITY
// The following member functions are deprecated. You should use the SetColNull()
bool SetNull(int colNo, bool set=TRUE) { return (SetNull(colNo,set)); }
bool SetNull(const char *colName, bool set=TRUE) { return (SetNull(colName,set)); }
#endif
#ifdef __WXDEBUG__
ULONG GetTableID() { return tableID; }
#endif