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Added support for dBase, PostGres, MySQL, Access, MS SQL Server.

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Added QUERY_ONLY data connection types.
SQL logging code addded.
Cleaned up handling compilation under both 1.6x and 2.x.
Added debug code to warn when connections were not released on program termination.
MS-VC6 corrections due to larger memory buffers required.
Parameter added to not require CreateView() and CreateTable() to drop the view or table first.
DropView() function added.
Database UserIDs can now be passed to functions that need them.
SQLUnbind() called where needed now to prevent resource leaks.
TableExists() function now handles dBase files.
Dbms() function added to determine which database the program is currently running against.
Comments have been added to the Dbms() function to indicate issues specific to different data sources.
Dynamic cursor support added (no longer creates 5-7 cursors for every wxTable instance).
wxTable dtor is now virtual.
Parameter added to not require CreateIndex() and CreateTable() to drop the view or table first.
DropIndex() and DropTable() functions added.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@3868 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
George Tasker
1999-10-07 14:19:57 +00:00
parent 9b64e79868
commit a2115c88f3
4 changed files with 1255 additions and 467 deletions
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190
include/wx/db.h
View File

@@ -5,13 +5,20 @@
// source such as opening and closing the data source.
// Author: Doug Card
// Modified by:
// Mods: Dec, 1998: Added support for SQL statement logging and database
// cataloging
// Mods: Dec, 1998:
// -Added support for SQL statement logging and database cataloging
// April, 1999
// -Added QUERY_ONLY mode support to reduce default number of cursors
// -Added additional SQL logging code
// -Added DEBUG-ONLY tracking of Ctable objects to detect orphaned DB connections
// -Set ODBC option to only read committed writes to the DB so all
// databases operate the same in that respect
//
// Created: 9.96
// RCS-ID: $Id$
// Copyright: (c) 1996 Remstar International, Inc.
// Licence: wxWindows licence, plus:
// Notice: This class library and its intellectual design are free of charge for use,
// Notice: This class library and its intellectual design are free of charge for use,
// modification, enhancement, debugging under the following conditions:
// 1) These classes may only be used as part of the implementation of a
// wxWindows-based application
@@ -30,54 +37,85 @@
#ifndef DB_DOT_H
#define DB_DOT_H
#ifdef __GNUG__
#pragma interface "db.h"
// Use this line for wxWindows v1.x
//#include "wx_ver.h"
// Use this line for wxWindows v2.x
#include "wx/version.h"
#if wxMAJOR_VERSION == 2
#ifdef __GNUG__
#pragma interface "db.h"
#endif
#endif
#if defined(__WXMSW__) || defined(WIN32)
#if defined(wx_msw) || defined(__WXMSW__) || defined(WIN32)
#include <windows.h>
#endif
#ifdef _IODBC_
#if wxMAJOR_VERSION == 2
extern "C" {
#include "../../src/iodbc/isql.h"
#include "../../src/iodbc/isqlext.h"
}
#else // version == 1
extern "C" {
#include "iodbc.h"
#include "isqlext.h"
}
#endif
typedef float SFLOAT;
typedef double SDOUBLE;
typedef unsigned int UINT;
#define ULONG UDWORD
#else // msw
#define ODBCVER 0x0250
#include <sql.h>
#include <sqlext.h>
#endif
#ifdef __WXGTK__
extern "C" {
#include "../../src/iodbc/isql.h"
#include "../../src/iodbc/isqlext.h"
typedef float SFLOAT;
typedef double SDOUBLE;
typedef unsigned int UINT;
#define ULONG UDWORD
}
#else
#define ODBCVER 0x0250
#include <sql.h>
#include <sqlext.h>
#ifdef __UNIX__
# ifndef strnicmp
# define strnicmp strncasecmp
# endif
# ifndef stricmp
# define stricmp strcasecmp
# endif
#else
# include <io.h>
#endif
enum enumDummy {enumDum1};
#define SQL_C_BOOLEAN (sizeof(int) == 2 ? SQL_C_USHORT : SQL_C_ULONG)
#define SQL_C_ENUM (sizeof(enumDummy) == 2 ? SQL_C_USHORT : SQL_C_ULONG) //glt 2-21-97
#define SQL_C_BOOLEAN(datatype) (sizeof(datatype) == 1 ? SQL_C_UTINYINT : (sizeof(datatype) == 2 ? SQL_C_USHORT : SQL_C_ULONG))
// #define SQL_C_BOOLEAN (sizeof(Bool) == 2 ? SQL_C_USHORT : SQL_C_ULONG)
#define SQL_C_ENUM (sizeof(enumDummy) == 2 ? SQL_C_USHORT : SQL_C_ULONG)
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
const int DB_PATH_MAX = 254;
// Database Globals
const int DB_TYPE_NAME_LEN = 40;
const int DB_MAX_STATEMENT_LEN = 2048;
const int DB_MAX_WHERE_CLAUSE_LEN = 1024;
const int DB_MAX_ERROR_MSG_LEN = 512;
const int DB_MAX_ERROR_HISTORY = 5;
const int DB_MAX_STATEMENT_LEN = 2048;
const int DB_MAX_WHERE_CLAUSE_LEN = 1024;
const int DB_MAX_ERROR_MSG_LEN = 512;
const int DB_MAX_ERROR_HISTORY = 5;
const int DB_MAX_TABLE_NAME_LEN = 128;
const int DB_MAX_COLUMN_NAME_LEN = 128;
const int DB_DATA_TYPE_VARCHAR = 1;
const int DB_DATA_TYPE_INTEGER = 2;
const int DB_DATA_TYPE_VARCHAR = 1;
const int DB_DATA_TYPE_INTEGER = 2;
const int DB_DATA_TYPE_FLOAT = 3;
const int DB_DATA_TYPE_DATE = 4;
const int DB_DATA_TYPE_DATE = 4;
const int DB_SELECT_KEYFIELDS = 1;
const int DB_SELECT_WHERE = 2;
@@ -92,14 +130,7 @@ const int DB_DEL_WHERE = 2;
const int DB_DEL_MATCHING = 3;
const int DB_WHERE_KEYFIELDS = 1;
const int DB_WHERE_MATCHING = 2;
const int DB_CURSOR0 = 0;
const int DB_CURSOR1 = 1;
const int DB_CURSOR2 = 2;
//const int DB_CURSOR3 = 3;
//const int DB_CURSOR4 = 4;
//const int DB_CURSOR5 = 5;
const int DB_WHERE_MATCHING = 2;
const int DB_GRANT_SELECT = 1;
const int DB_GRANT_INSERT = 2;
@@ -110,8 +141,8 @@ const int DB_GRANT_ALL = DB_GRANT_SELECT | DB_GRANT_INSERT | DB_GRANT_UPDA
// ODBC Error codes (derived from ODBC SqlState codes)
enum ODBC_ERRORS
{
DB_FAILURE = 0,
DB_SUCCESS = 1,
DB_FAILURE = 0,
DB_SUCCESS = 1,
DB_ERR_NOT_IN_USE,
DB_ERR_GENERAL_WARNING, // SqlState = '01000'
DB_ERR_DISCONNECT_ERROR, // SqlState = '01002'
@@ -207,9 +238,15 @@ enum ODBC_ERRORS
struct DbStuff
{
HENV Henv;
char Dsn[SQL_MAX_DSN_LENGTH+1]; // Data Source Name
char Uid[20]; // User ID
char AuthStr[20]; // Authorization string (password)
char Dsn[SQL_MAX_DSN_LENGTH+1]; // Data Source Name
char Uid[20+1]; // User ID
char AuthStr[20+1]; // Authorization string (password)
char description[SQL_MAX_DSN_LENGTH+1]; // Not sure what the max length is
char fileType[SQL_MAX_DSN_LENGTH+1]; // Not sure what the max length is
// Optionals needed for some databases like dBase
char defaultDir[DB_PATH_MAX]; // Directory that db file resides in
};
typedef struct
@@ -236,6 +273,30 @@ enum sqlLog
sqlLogON
};
enum dbms
{
dbmsUNIDENTIFIED,
dbmsORACLE,
dbmsSYBASE_ASA, // Adaptive Server Anywhere
dbmsSYBASE_ASE, // Adaptive Server Enterprise
dbmsMS_SQL_SERVER,
dbmsMY_SQL,
dbmsPOSTGRES,
dbmsACCESS,
dbmsDBASE
};
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
// connection fails so the calling application can show the operator
// why the connection failed. Note: as each wxDB object is closed, it
// will overwrite the errors of the previously destroyed wxDB object in
// this variable.
extern char DBerrorList[DB_MAX_ERROR_HISTORY][DB_MAX_ERROR_MSG_LEN];
class WXDLLEXPORT wxDB
{
private:
@@ -261,7 +322,7 @@ public:
struct
{
char dbmsName[40]; // Name of the dbms product
char dbmsVer[40]; // Version # of the dbms product
char dbmsVer[64]; // Version # of the dbms product
char driverName[40]; // Driver name
char odbcVer[60]; // ODBC version of the driver
char drvMgrOdbcVer[60]; // ODBC version of the driver manager
@@ -308,6 +369,9 @@ public:
//Error reporting mode
bool silent;
// Number of Ctable objects connected to this db object
unsigned int nTables;
// Inf. about logical data types VARCHAR, INTEGER, FLOAT and DATE.
// This inf. is obtained from the ODBC driver by use of the
// SQLGetTypeInfo() function. The key piece of inf. is the
@@ -324,24 +388,28 @@ public:
bool DispAllErrors(HENV aHenv, HDBC aHdbc = SQL_NULL_HDBC, HSTMT aHstmt = SQL_NULL_HSTMT);
bool GetNextError(HENV aHenv, HDBC aHdbc = SQL_NULL_HDBC, HSTMT aHstmt = SQL_NULL_HSTMT);
void DispNextError(void);
bool CreateView(char *viewName, char *colList, char *pSqlStmt);
bool CreateView(char *viewName, char *colList, char *pSqlStmt, bool attemptDrop=TRUE);
bool DropView(char *viewName);
bool ExecSql(char *pSqlStmt);
bool GetNext(void);
bool GetData(UWORD colNo, SWORD cType, PTR pData, SDWORD maxLen, SDWORD FAR *cbReturned);
bool Grant(int privileges, char *tableName, char *userList = "PUBLIC");
int TranslateSqlState(char *SQLState);
bool Catalog(char *userID, char *fileName = "Catalog.txt");
CcolInf *GetColumns(char *tableName[]);
CcolInf *GetColumns(char *tableName[], char *userID=NULL);
char *GetDatabaseName(void) {return dbInf.dbmsName;}
char *GetDataSource(void) {return dsn;}
char *GetUsername(void) {return uid;}
char *GetPassword(void) {return authStr;}
char *GetUsername(void) {return uid;}
char *GetPassword(void) {return authStr;}
bool IsOpen(void) {return dbIsOpen;}
HENV GetHENV(void) {return henv;}
HDBC GetHDBC(void) {return hdbc;}
HSTMT GetHSTMT(void) {return hstmt;}
bool TableExists(char *tableName); // Table name can refer to a table, view, alias or synonym
HSTMT GetHSTMT(void) {return hstmt;}
bool TableExists(char *tableName, char *userID=NULL, char *path=NULL); // Table name can refer to a table, view, alias or synonym
void LogError(char *errMsg, char *SQLState = 0) {logError(errMsg, SQLState);}
bool SqlLog(enum sqlLog state, char *filename = "sqllog.txt", bool append = FALSE);
bool WriteSqlLog(char *logMsg);
DBMS Dbms(void);
}; // wxDB
@@ -359,6 +427,17 @@ struct DbList
DbList *PtrNext; // Pointer to next item in the list
};
#if __WXDEBUG__ > 0
class CstructTablesInUse : public wxObject
{
public:
const char *tableName;
ULONG tableID;
class wxDB *pDb;
}; // CstructTablesInUse
#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.
@@ -368,6 +447,9 @@ bool WXDLLEXPORT FreeDbConnection(wxDB *pDb);
void WXDLLEXPORT CloseDbConnections(void);
int WXDLLEXPORT NumberDbConnectionsInUse(void);
// This function sets the sql log state for all open wxDB objects
bool SqlLog(enum sqlLog state, char *filename = "sqllog.txt");
// 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