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Cleaned up the API for class/structure/function names to follow the wxWindows conventions (mostly prefixing wx to all of them). Backward compatability is maintained by keeping the old names calling the new functions, or typedef-ing the old names to the new names. The old names can be totally disabled at the end of the file by changing the #if 1 block that surrounds the old names

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Added a wxDbCreateDataSource() function, though it only works under MSW using VC6, because the API is not available with iODBC.  To use this, it requires linking in odbccp32.lib and #including odbcinst.h in db.h.  This function is disabled with #if 0 for now.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6767 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
George Tasker
2000-03-16 19:00:24 +00:00
parent 4a8fc2c8b3
commit fdc0367851
2 changed files with 235 additions and 79 deletions
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104
include/wx/db.h
View File

@@ -55,6 +55,12 @@
extern "C" {
#include "wx/isql.h"
#include "wx/isqlext.h"
// If you use the wxCreateDataSource() function with MSW/VC6,
// you cannot use the iODBC headers, you must use the VC headers,
// plus the odbcinst.h header
//#include "sql.h"
//#include "sqlext.h"
//#include "odbcinst.h"
}
#else // version == 1
extern "C" {
@@ -129,7 +135,7 @@ const int DB_GRANT_DELETE = 8;
const int DB_GRANT_ALL = DB_GRANT_SELECT | DB_GRANT_INSERT | DB_GRANT_UPDATE | DB_GRANT_DELETE;
// ODBC Error codes (derived from ODBC SqlState codes)
enum ODBC_ERRORS
enum wxODBC_ERRORS
{
DB_FAILURE = 0,
DB_SUCCESS = 1,
@@ -226,7 +232,7 @@ enum ODBC_ERRORS
};
struct DbStuff
struct wxDbConnectInf
{
HENV Henv;
char Dsn[SQL_MAX_DSN_LENGTH+1]; // Data Source Name
@@ -240,8 +246,7 @@ struct DbStuff
char defaultDir[DB_PATH_MAX]; // Directory that db file resides in
};
typedef struct
struct wxSqlTypeInfo
{
char TypeName[DB_TYPE_NAME_LEN];
int FsqlType;
@@ -249,7 +254,7 @@ typedef struct
short CaseSensitive;
// short MinimumScale;
short MaximumScale;
} SqlTypeInfo;
};
class WXDLLEXPORT wxColFor
@@ -316,17 +321,16 @@ public:
};
enum sqlLog
enum wxSqlLogState
{
sqlLogOFF,
sqlLogON
};
// These are the databases currently tested and working with these classes
// See the comments in wxDB::Dbms() for exceptions/issues with
// each of these database engines
enum dbms
enum wxDBMS
{
dbmsUNIDENTIFIED,
dbmsORACLE,
@@ -341,9 +345,6 @@ enum dbms
};
typedef enum dbms DBMS;
// The wxDB::errorList is copied to this variable when the wxDB object
// is closed. This way, the error list is still available after the
// database object is closed. This is necessary if the database
@@ -354,28 +355,20 @@ typedef enum dbms DBMS;
extern char DBerrorList[DB_MAX_ERROR_HISTORY][DB_MAX_ERROR_MSG_LEN];
// Backward compability for Remstar classes. This
// will eventually go away, so the wxColXxxx classes
// should be used
typedef wxColInf CcolInf;
class WXDLLEXPORT wxDB
{
private:
// Private data
bool dbIsOpen;
char *dsn; // Data source name
char *uid; // User ID
char *authStr; // Authorization string (password)
FILE *fpSqlLog; // Sql Log file pointer
enum sqlLog sqlLogState; // On or Off
wxSqlLogState sqlLogState; // On or Off
bool fwdOnlyCursors;
// Private member functions
bool getDbInfo(void);
bool getDataTypeInfo(SWORD fSqlType, SqlTypeInfo &structSQLTypeInfo);
bool getDataTypeInfo(SWORD fSqlType, wxSqlTypeInfo &structSQLTypeInfo);
bool setConnectionOptions(void);
void logError(const char *errMsg, const char *SQLState);
@@ -440,7 +433,7 @@ public:
// SQLGetTypeInfo() function. The key piece of inf. is the
// type name the data source uses for each logical data type.
// e.g. VARCHAR; Oracle calls it VARCHAR2.
SqlTypeInfo typeInfVarchar, typeInfInteger, typeInfFloat, typeInfDate;
wxSqlTypeInfo typeInfVarchar, typeInfInteger, typeInfFloat, typeInfDate;
// Public member functions
wxDB(HENV &aHenv, bool FwdOnlyCursors=(bool)TRUE);
@@ -474,57 +467,92 @@ public:
HSTMT GetHSTMT(void) {return hstmt;}
bool TableExists(const char *tableName, const char *userID=NULL, const char *path=NULL); // Table name can refer to a table, view, alias or synonym
void LogError(const char *errMsg, const char *SQLState = 0) {logError(errMsg, SQLState);}
bool SqlLog(enum sqlLog state, const char *filename = SQL_LOG_FILENAME, bool append = FALSE);
bool SqlLog(wxSqlLogState state, const char *filename = SQL_LOG_FILENAME, bool append = FALSE);
bool WriteSqlLog(const char *logMsg);
DBMS Dbms(void);
wxDBMS Dbms(void);
bool FwdOnlyCursors(void) {return fwdOnlyCursors;}
}; // wxDB
// This structure forms a node in a linked list. The linked list of "DbList" objects
// keeps track of allocated database connections. This allows the application to
// open more than one database connection through ODBC for multiple transaction support
// or for multiple database support.
struct DbList
struct wxDbList
{
DbList *PtrPrev; // Pointer to previous item in the list
wxDbList *PtrPrev; // Pointer to previous item in the list
char Dsn[SQL_MAX_DSN_LENGTH+1]; // Data Source Name
wxDB *PtrDb; // Pointer to the wxDB object
bool Free; // Is item free or in use?
DbList *PtrNext; // Pointer to next item in the list
wxDbList *PtrNext; // Pointer to next item in the list
};
#ifdef __WXDEBUG__
#include "wx/object.h"
class CstructTablesInUse : public wxObject
class wxTablesInUse : public wxObject
{
public:
const char *tableName;
ULONG tableID;
class wxDB *pDb;
}; // CstructTablesInUse
}; // wxTablesInUse
#endif
// The following routines allow a user to get new database connections, free them
// for other code segments to use, or close all of them when the application has
// completed.
wxDB WXDLLEXPORT *GetDbConnection(DbStuff *pDbStuff, bool FwdOnlyCursors=(bool)wxODBC_FWD_ONLY_CURSORS);
bool WXDLLEXPORT FreeDbConnection(wxDB *pDb);
void WXDLLEXPORT CloseDbConnections(void);
int WXDLLEXPORT NumberDbConnectionsInUse(void);
wxDB WXDLLEXPORT *wxDbGetConnection(wxDbConnectInf *pDbConfig, bool FwdOnlyCursors=(bool)wxODBC_FWD_ONLY_CURSORS);
bool WXDLLEXPORT wxDbFreeConnection(wxDB *pDb);
void WXDLLEXPORT wxDbCloseConnections(void);
int WXDLLEXPORT wxDbNumberConnectionsInUse(void);
// This function sets the sql log state for all open wxDB objects
bool SqlLog(enum sqlLog state, const char *filename = SQL_LOG_FILENAME);
bool wxDbSqlLog(wxSqlLogState state, const char *filename = SQL_LOG_FILENAME);
#if 0
// MSW/VC6 ONLY!!! Experimental
int WXDLLEXPORT wxDbCreateDataSource(const char *driverName, const char *dsn, const char *description="",
bool sysDSN=FALSE, const char *defDir="", wxWindow *parent=NULL);
#endif
// This routine allows you to query a driver manager
// for a list of available datasources. Call this routine
// the first time using SQL_FETCH_FIRST. Continue to call it
// using SQL_FETCH_NEXT until you've exhausted the list.
bool WXDLLEXPORT GetDataSource(HENV henv, char *Dsn, SWORD DsnMax, char *DsDesc, SWORD DsDescMax,
bool WXDLLEXPORT wxDbGetDataSource(HENV henv, char *Dsn, SWORD DsnMax, char *DsDesc, SWORD DsDescMax,
UWORD direction = SQL_FETCH_NEXT);
// Change this to 0 to remove use of all deprecated functions
#if 1
//#################################################################################
//############### DEPRECATED functions for backward compatability #################
//#################################################################################
// Backward compability structures/classes. This will eventually go away
typedef wxColInf CcolInf;
typedef wxSqlTypeInfo SqlTypeInfo;
typedef enum wxSqlLogState sqlLog;
typedef enum wxDBMS dbms;
typedef enum wxDBMS DBMS;
typedef wxODBC_ERRORS ODBC_ERRORS;
typedef wxDbConnectInf DbStuff;
typedef wxDbList DbList;
typedef wxTablesInUse CstructTablesInUse;
// Deprecated function names that are replaced by the function names listed above
wxDB WXDLLEXPORT *GetDbConnection(DbStuff *pDbStuff, bool FwdOnlyCursors=(bool)wxODBC_FWD_ONLY_CURSORS);
bool WXDLLEXPORT FreeDbConnection(wxDB *pDb);
void WXDLLEXPORT CloseDbConnections(void);
int WXDLLEXPORT NumberDbConnectionsInUse(void);
bool SqlLog(sqlLog state, const char *filename = SQL_LOG_FILENAME);
bool WXDLLEXPORT GetDataSource(HENV henv, char *Dsn, SWORD DsnMax, char *DsDesc, SWORD DsDescMax,
UWORD direction = SQL_FETCH_NEXT);
#endif // Deprecated structures/classes/functions
#endif

202
src/common/db.cpp
View File

@@ -92,7 +92,7 @@
#include "wx/db.h"
#endif
DbList WXDLLEXPORT *PtrBegDbList = 0;
wxDbList WXDLLEXPORT *PtrBegDbList = 0;
char const *SQL_LOG_FILENAME = "sqllog.txt";
char const *SQL_CATALOG_FILENAME = "catalog.txt";
@@ -102,7 +102,7 @@ char const *SQL_CATALOG_FILENAME = "catalog.txt";
#endif
// SQL Log defaults to be used by GetDbConnection
enum sqlLog SQLLOGstate = sqlLogOFF;
wxSqlLogState SQLLOGstate = sqlLogOFF;
//char SQLLOGfn[DB_PATH_MAX+1] = SQL_LOG_FILENAME;
char *SQLLOGfn = (char*) SQL_LOG_FILENAME;
@@ -795,13 +795,13 @@ bool wxDB::getDbInfo(void)
/********** wxDB::getDataTypeInfo() **********/
bool wxDB::getDataTypeInfo(SWORD fSqlType, SqlTypeInfo &structSQLTypeInfo)
bool wxDB::getDataTypeInfo(SWORD fSqlType, wxSqlTypeInfo &structSQLTypeInfo)
{
/*
* fSqlType will be something like SQL_VARCHAR. This parameter determines
* the data type inf. is gathered for.
*
* SqlTypeInfo is a structure that is filled in with data type information,
* wxSqlTypeInfo is a structure that is filled in with data type information,
*/
RETCODE retcode;
SDWORD cbRet;
@@ -887,13 +887,13 @@ void wxDB::Close(void)
assert(nTables == 0);
#ifdef __WXDEBUG__
CstructTablesInUse *tiu;
wxTablesInUse *tiu;
wxNode *pNode;
pNode = TablesInUse.First();
wxString s,s2;
while (pNode)
{
tiu = (CstructTablesInUse *)pNode->Data();
tiu = (wxTablesInUse *)pNode->Data();
if (tiu->pDb == this)
{
s.sprintf("(%-20s) tableID:[%6lu] pDb:[%p]", tiu->tableName,tiu->tableID,tiu->pDb);
@@ -2363,7 +2363,7 @@ bool wxDB::TableExists(const char *tableName, const char *userID, const char *ta
/********** wxDB::SqlLog() **********/
bool wxDB::SqlLog(enum sqlLog state, const char *filename, bool append)
bool wxDB::SqlLog(wxSqlLogState state, const char *filename, bool append)
{
assert(state == sqlLogON || state == sqlLogOFF);
assert(state == sqlLogOFF || filename);
@@ -2411,7 +2411,7 @@ bool wxDB::WriteSqlLog(const char *logMsg)
/********** wxDB::Dbms() **********/
DBMS wxDB::Dbms(void)
wxDBMS wxDB::Dbms(void)
/*
* Be aware that not all database engines use the exact same syntax, and not
* every ODBC compliant database is compliant to the same level of compliancy.
@@ -2490,10 +2490,10 @@ DBMS wxDB::Dbms(void)
} // wxDB::Dbms()
/********** GetDbConnection() **********/
wxDB WXDLLEXPORT *GetDbConnection(DbStuff *pDbStuff, bool FwdOnlyCursors)
/********** wxDbGetConnection() **********/
wxDB WXDLLEXPORT *wxDbGetConnection(wxDbConnectInf *pDbConfig, bool FwdOnlyCursors)
{
DbList *pList;
wxDbList *pList;
// Scan the linked list searching for an available database connection
// that's already been opened but is currently not in use.
@@ -2501,7 +2501,7 @@ wxDB WXDLLEXPORT *GetDbConnection(DbStuff *pDbStuff, bool FwdOnlyCursors)
{
// The database connection must be for the same datasource
// name and must currently not be in use.
if (pList->Free && (! wxStrcmp(pDbStuff->Dsn, pList->Dsn))) // Found a free connection
if (pList->Free && (! wxStrcmp(pDbConfig->Dsn, pList->Dsn))) // Found a free connection
{
pList->Free = FALSE;
return(pList->PtrDb);
@@ -2515,25 +2515,25 @@ wxDB WXDLLEXPORT *GetDbConnection(DbStuff *pDbStuff, bool FwdOnlyCursors)
// Find the end of the list
for (pList = PtrBegDbList; pList->PtrNext; pList = pList->PtrNext);
// Append a new list item
pList->PtrNext = new DbList;
pList->PtrNext = new wxDbList;
pList->PtrNext->PtrPrev = pList;
pList = pList->PtrNext;
}
else // Empty list
{
// Create the first node on the list
pList = PtrBegDbList = new DbList;
pList = PtrBegDbList = new wxDbList;
pList->PtrPrev = 0;
}
// Initialize new node in the linked list
pList->PtrNext = 0;
pList->Free = FALSE;
wxStrcpy(pList->Dsn, pDbStuff->Dsn);
pList->PtrDb = new wxDB(pDbStuff->Henv,FwdOnlyCursors);
wxStrcpy(pList->Dsn, pDbConfig->Dsn);
pList->PtrDb = new wxDB(pDbConfig->Henv,FwdOnlyCursors);
// Connect to the datasource
if (pList->PtrDb->Open(pDbStuff->Dsn, pDbStuff->Uid, pDbStuff->AuthStr))
if (pList->PtrDb->Open(pDbConfig->Dsn, pDbConfig->Uid, pDbConfig->AuthStr))
{
pList->PtrDb->SqlLog(SQLLOGstate,SQLLOGfn,TRUE);
return(pList->PtrDb);
@@ -2551,13 +2551,13 @@ wxDB WXDLLEXPORT *GetDbConnection(DbStuff *pDbStuff, bool FwdOnlyCursors)
return(0);
}
} // GetDbConnection()
} // wxDbGetConnection()
/********** FreeDbConnection() **********/
bool WXDLLEXPORT FreeDbConnection(wxDB *pDb)
/********** wxDbFreeConnection() **********/
bool WXDLLEXPORT wxDbFreeConnection(wxDB *pDb)
{
DbList *pList;
wxDbList *pList;
// Scan the linked list searching for the database connection
for (pList = PtrBegDbList; pList; pList = pList->PtrNext)
@@ -2569,13 +2569,13 @@ bool WXDLLEXPORT FreeDbConnection(wxDB *pDb)
// Never found the database object, return failure
return(FALSE);
} // FreeDbConnection()
} // wxDbFreeConnection()
/********** CloseDbConnections() **********/
void WXDLLEXPORT CloseDbConnections(void)
/********** wxDbCloseConnections() **********/
void WXDLLEXPORT wxDbCloseConnections(void)
{
DbList *pList, *pNext;
wxDbList *pList, *pNext;
// Traverse the linked list closing database connections and freeing memory as I go.
for (pList = PtrBegDbList; pList; pList = pNext)
@@ -2590,13 +2590,13 @@ void WXDLLEXPORT CloseDbConnections(void)
// Mark the list as empty
PtrBegDbList = 0;
} // CloseDbConnections()
} // wxDbCloseConnections()
/********** NumberDbConnectionsInUse() **********/
int WXDLLEXPORT NumberDbConnectionsInUse(void)
/********** wxDbNumberConnectionsInUse() **********/
int WXDLLEXPORT wxDbConnectionsInUse(void)
{
DbList *pList;
wxDbList *pList;
int cnt = 0;
// Scan the linked list counting db connections that are currently in use
@@ -2608,14 +2608,14 @@ int WXDLLEXPORT NumberDbConnectionsInUse(void)
return(cnt);
} // NumberDbConnectionsInUse()
} // wxDbConnectionsInUse()
/********** SqlLog() **********/
bool SqlLog(enum sqlLog state, char *filename)
/********** wxDbSqlLog() **********/
bool wxDbSqlLog(wxSqlLogState state, char *filename)
{
bool append = FALSE;
DbList *pList;
wxDbList *pList;
for (pList = PtrBegDbList; pList; pList = pList->PtrNext)
{
@@ -2629,11 +2629,92 @@ bool SqlLog(enum sqlLog state, char *filename)
return(TRUE);
} // SqlLog()
} // wxDbSqlLog()
/********** GetDataSource() **********/
bool GetDataSource(HENV henv, char *Dsn, SWORD DsnMax, char *DsDesc, SWORD DsDescMax,
#if 0
/********** wxDbCreateDataSource() **********/
int wxDbCreateDataSource(const char *driverName, const char *dsn, const char *description,
bool sysDSN, const char *defDir, wxWindow *parent)
/*
* !!!! ONLY FUNCTIONAL UNDER MSW with VC6 !!!!
* Very rudimentary creation of an ODBC data source.
*/
{
int result = FALSE;
#ifdef __WXMSW__
int dsnLocation;
wxString setupStr;
if (sysDSN)
dsnLocation = ODBC_ADD_SYS_DSN;
else
dsnLocation = ODBC_ADD_DSN;
// NOTE: The decimal 2 is an invalid character in all keyword pairs
// so that is why I used it, as wxString does not deal well with
// embedded nulls in strings
setupStr.sprintf("DSN=%s%cDescription=%s%cDefaultDir=%s%c",dsn,2,description,2,defDir,2);
// Replace the separator from above with the '\0' seperator needed
// by the SQLConfigDataSource() function
int k;
do
{
k = setupStr.Find((wxChar)2,TRUE);
if (k != wxNOT_FOUND)
setupStr[(UINT)k] = '\0';
}
while (k != wxNOT_FOUND);
result = SQLConfigDataSource((HWND)parent->GetHWND(), dsnLocation,
driverName, setupStr.GetData());
if (!result)
{
// check for errors caused by ConfigDSN based functions
DWORD retcode = 0;
WORD cb;
wxChar errMsg[500+1];
errMsg[0] = '\0';
SQLInstallerError(1,&retcode,errMsg,500,&cb);
if (retcode)
{
// logError(errMsg, sqlState);
// if (!silent)
// {
#ifdef DBDEBUG_CONSOLE
// When run in console mode, use standard out to display errors.
cout << errMsg << endl;
cout << "Press any key to continue..." << endl;
getchar();
#endif // DBDEBUG_CONSOLE
// }
#ifdef __WXDEBUG__
wxLogDebug(errMsg,"DEBUG MESSAGE");
#endif // __WXDEBUG__
}
}
else
result = TRUE;
#else // __WXMSW__
#ifdef __WXDEBUG__
wxLogDebug("wxDbCreateDataSource() not available except under MSW","DEBUG MESSAGE");
#endif
#endif // __WXMSW__
return result;
} // wxDbCreateDataSource()
#endif
/********** wxDbGetDataSource() **********/
bool wxDbGetDataSource(HENV henv, char *Dsn, SWORD DsnMax, char *DsDesc, SWORD DsDescMax,
UWORD direction)
/*
* Dsn and DsDesc will contain the data source name and data source
@@ -2648,7 +2729,54 @@ bool GetDataSource(HENV henv, char *Dsn, SWORD DsnMax, char *DsDesc, SWORD DsDes
else
return(FALSE);
} // GetDataSource()
} // wxDbGetDataSource()
// Change this to 0 to remove use of all deprecated functions
#if 1
/********************************************************************
********************************************************************
*
* The following functions are all DEPRECATED and are included for
* backward compatability reasons only
*
********************************************************************
********************************************************************/
bool SqlLog(sqlLog state, char *filename)
{
return wxDbSqlLog((enum wxSqlLogState)state, filename);
}
/***** DEPRECATED: use wxGetDataSource() *****/
bool GetDataSource(HENV henv, char *Dsn, SWORD DsnMax, char *DsDesc, SWORD DsDescMax,
UWORD direction)
{
return wxDbGetDataSource(henv, Dsn, DsnMax, DsDesc, DsDescMax, direction);
}
/***** DEPRECATED: use wxDbGetConnection() *****/
wxDB WXDLLEXPORT *GetDbConnection(DbStuff *pDbStuff, bool FwdOnlyCursors)
{
return wxDbGetConnection((wxDbConnectInf *)pDbStuff, FwdOnlyCursors);
}
/***** DEPRECATED: use wxDbFreeConnection() *****/
bool WXDLLEXPORT FreeDbConnection(wxDB *pDb)
{
return wxDbFreeConnection(pDb);
}
/***** DEPRECATED: use wxDbCloseConnections() *****/
void WXDLLEXPORT CloseDbConnections(void)
{
wxDbCloseConnections();
}
/***** DEPRECATED: use wxDbConnectionsInUse() *****/
int WXDLLEXPORT NumberDbConnectionsInUse(void)
{
return wxDbConnectionsInUse();
}
#endif
#endif
// wxUSE_ODBC