d194ddf23b
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4418 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
462 lines
18 KiB
C++
462 lines
18 KiB
C++
///////////////////////////////////////////////////////////////////////////////
|
|
// Name: db.h
|
|
// Purpose: Header file wxDB class. The wxDB class represents a connection
|
|
// to an ODBC data source. The wxDB class allows operations on the data
|
|
// 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
|
|
// 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,
|
|
// modification, enhancement, debugging under the following conditions:
|
|
// 1) These classes may only be used as part of the implementation of a
|
|
// wxWindows-based application
|
|
// 2) All enhancements and bug fixes are to be submitted back to the wxWindows
|
|
// user groups free of all charges for use with the wxWindows library.
|
|
// 3) These classes may not be distributed as part of any other class library,
|
|
// DLL, text (written or electronic), other than a complete distribution of
|
|
// the wxWindows GUI development toolkit.
|
|
//
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
/*
|
|
// SYNOPSIS START
|
|
// SYNOPSIS STOP
|
|
*/
|
|
|
|
#ifndef DB_DOT_H
|
|
#define DB_DOT_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(wx_msw) || defined(__WXMSW__) || defined(WIN32)
|
|
#include <windows.h>
|
|
#endif
|
|
|
|
#ifdef __UNIX__
|
|
#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 __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(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_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_FLOAT = 3;
|
|
const int DB_DATA_TYPE_DATE = 4;
|
|
|
|
const int DB_SELECT_KEYFIELDS = 1;
|
|
const int DB_SELECT_WHERE = 2;
|
|
const int DB_SELECT_MATCHING = 3;
|
|
const int DB_SELECT_STATEMENT = 4;
|
|
|
|
const int DB_UPD_KEYFIELDS = 1;
|
|
const int DB_UPD_WHERE = 2;
|
|
|
|
const int DB_DEL_KEYFIELDS = 1;
|
|
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_GRANT_SELECT = 1;
|
|
const int DB_GRANT_INSERT = 2;
|
|
const int DB_GRANT_UPDATE = 4;
|
|
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
|
|
{
|
|
DB_FAILURE = 0,
|
|
DB_SUCCESS = 1,
|
|
DB_ERR_NOT_IN_USE,
|
|
DB_ERR_GENERAL_WARNING, // SqlState = '01000'
|
|
DB_ERR_DISCONNECT_ERROR, // SqlState = '01002'
|
|
DB_ERR_DATA_TRUNCATED, // SqlState = '01004'
|
|
DB_ERR_PRIV_NOT_REVOKED, // SqlState = '01006'
|
|
DB_ERR_INVALID_CONN_STR_ATTR, // SqlState = '01S00'
|
|
DB_ERR_ERROR_IN_ROW, // SqlState = '01S01'
|
|
DB_ERR_OPTION_VALUE_CHANGED, // SqlState = '01S02'
|
|
DB_ERR_NO_ROWS_UPD_OR_DEL, // SqlState = '01S03'
|
|
DB_ERR_MULTI_ROWS_UPD_OR_DEL, // SqlState = '01S04'
|
|
DB_ERR_WRONG_NO_OF_PARAMS, // SqlState = '07001'
|
|
DB_ERR_DATA_TYPE_ATTR_VIOL, // SqlState = '07006'
|
|
DB_ERR_UNABLE_TO_CONNECT, // SqlState = '08001'
|
|
DB_ERR_CONNECTION_IN_USE, // SqlState = '08002'
|
|
DB_ERR_CONNECTION_NOT_OPEN, // SqlState = '08003'
|
|
DB_ERR_REJECTED_CONNECTION, // SqlState = '08004'
|
|
DB_ERR_CONN_FAIL_IN_TRANS, // SqlState = '08007'
|
|
DB_ERR_COMM_LINK_FAILURE, // SqlState = '08S01'
|
|
DB_ERR_INSERT_VALUE_LIST_MISMATCH, // SqlState = '21S01'
|
|
DB_ERR_DERIVED_TABLE_MISMATCH, // SqlState = '21S02'
|
|
DB_ERR_STRING_RIGHT_TRUNC, // SqlState = '22001'
|
|
DB_ERR_NUMERIC_VALUE_OUT_OF_RNG, // SqlState = '22003'
|
|
DB_ERR_ERROR_IN_ASSIGNMENT, // SqlState = '22005'
|
|
DB_ERR_DATETIME_FLD_OVERFLOW, // SqlState = '22008'
|
|
DB_ERR_DIVIDE_BY_ZERO, // SqlState = '22012'
|
|
DB_ERR_STR_DATA_LENGTH_MISMATCH, // SqlState = '22026'
|
|
DB_ERR_INTEGRITY_CONSTRAINT_VIOL, // SqlState = '23000'
|
|
DB_ERR_INVALID_CURSOR_STATE, // SqlState = '24000'
|
|
DB_ERR_INVALID_TRANS_STATE, // SqlState = '25000'
|
|
DB_ERR_INVALID_AUTH_SPEC, // SqlState = '28000'
|
|
DB_ERR_INVALID_CURSOR_NAME, // SqlState = '34000'
|
|
DB_ERR_SYNTAX_ERROR_OR_ACCESS_VIOL, // SqlState = '37000'
|
|
DB_ERR_DUPLICATE_CURSOR_NAME, // SqlState = '3C000'
|
|
DB_ERR_SERIALIZATION_FAILURE, // SqlState = '40001'
|
|
DB_ERR_SYNTAX_ERROR_OR_ACCESS_VIOL2, // SqlState = '42000'
|
|
DB_ERR_OPERATION_ABORTED, // SqlState = '70100'
|
|
DB_ERR_UNSUPPORTED_FUNCTION, // SqlState = 'IM001'
|
|
DB_ERR_NO_DATA_SOURCE, // SqlState = 'IM002'
|
|
DB_ERR_DRIVER_LOAD_ERROR, // SqlState = 'IM003'
|
|
DB_ERR_SQLALLOCENV_FAILED, // SqlState = 'IM004'
|
|
DB_ERR_SQLALLOCCONNECT_FAILED, // SqlState = 'IM005'
|
|
DB_ERR_SQLSETCONNECTOPTION_FAILED, // SqlState = 'IM006'
|
|
DB_ERR_NO_DATA_SOURCE_DLG_PROHIB, // SqlState = 'IM007'
|
|
DB_ERR_DIALOG_FAILED, // SqlState = 'IM008'
|
|
DB_ERR_UNABLE_TO_LOAD_TRANSLATION_DLL, // SqlState = 'IM009'
|
|
DB_ERR_DATA_SOURCE_NAME_TOO_LONG, // SqlState = 'IM010'
|
|
DB_ERR_DRIVER_NAME_TOO_LONG, // SqlState = 'IM011'
|
|
DB_ERR_DRIVER_KEYWORD_SYNTAX_ERROR, // SqlState = 'IM012'
|
|
DB_ERR_TRACE_FILE_ERROR, // SqlState = 'IM013'
|
|
DB_ERR_TABLE_OR_VIEW_ALREADY_EXISTS, // SqlState = 'S0001'
|
|
DB_ERR_TABLE_NOT_FOUND, // SqlState = 'S0002'
|
|
DB_ERR_INDEX_ALREADY_EXISTS, // SqlState = 'S0011'
|
|
DB_ERR_INDEX_NOT_FOUND, // SqlState = 'S0012'
|
|
DB_ERR_COLUMN_ALREADY_EXISTS, // SqlState = 'S0021'
|
|
DB_ERR_COLUMN_NOT_FOUND, // SqlState = 'S0022'
|
|
DB_ERR_NO_DEFAULT_FOR_COLUMN, // SqlState = 'S0023'
|
|
DB_ERR_GENERAL_ERROR, // SqlState = 'S1000'
|
|
DB_ERR_MEMORY_ALLOCATION_FAILURE, // SqlState = 'S1001'
|
|
DB_ERR_INVALID_COLUMN_NUMBER, // SqlState = 'S1002'
|
|
DB_ERR_PROGRAM_TYPE_OUT_OF_RANGE, // SqlState = 'S1003'
|
|
DB_ERR_SQL_DATA_TYPE_OUT_OF_RANGE, // SqlState = 'S1004'
|
|
DB_ERR_OPERATION_CANCELLED, // SqlState = 'S1008'
|
|
DB_ERR_INVALID_ARGUMENT_VALUE, // SqlState = 'S1009'
|
|
DB_ERR_FUNCTION_SEQUENCE_ERROR, // SqlState = 'S1010'
|
|
DB_ERR_OPERATION_INVALID_AT_THIS_TIME, // SqlState = 'S1011'
|
|
DB_ERR_INVALID_TRANS_OPERATION_CODE, // SqlState = 'S1012'
|
|
DB_ERR_NO_CURSOR_NAME_AVAIL, // SqlState = 'S1015'
|
|
DB_ERR_INVALID_STR_OR_BUF_LEN, // SqlState = 'S1090'
|
|
DB_ERR_DESCRIPTOR_TYPE_OUT_OF_RANGE, // SqlState = 'S1091'
|
|
DB_ERR_OPTION_TYPE_OUT_OF_RANGE, // SqlState = 'S1092'
|
|
DB_ERR_INVALID_PARAM_NO, // SqlState = 'S1093'
|
|
DB_ERR_INVALID_SCALE_VALUE, // SqlState = 'S1094'
|
|
DB_ERR_FUNCTION_TYPE_OUT_OF_RANGE, // SqlState = 'S1095'
|
|
DB_ERR_INF_TYPE_OUT_OF_RANGE, // SqlState = 'S1096'
|
|
DB_ERR_COLUMN_TYPE_OUT_OF_RANGE, // SqlState = 'S1097'
|
|
DB_ERR_SCOPE_TYPE_OUT_OF_RANGE, // SqlState = 'S1098'
|
|
DB_ERR_NULLABLE_TYPE_OUT_OF_RANGE, // SqlState = 'S1099'
|
|
DB_ERR_UNIQUENESS_OPTION_TYPE_OUT_OF_RANGE, // SqlState = 'S1100'
|
|
DB_ERR_ACCURACY_OPTION_TYPE_OUT_OF_RANGE, // SqlState = 'S1101'
|
|
DB_ERR_DIRECTION_OPTION_OUT_OF_RANGE, // SqlState = 'S1103'
|
|
DB_ERR_INVALID_PRECISION_VALUE, // SqlState = 'S1104'
|
|
DB_ERR_INVALID_PARAM_TYPE, // SqlState = 'S1105'
|
|
DB_ERR_FETCH_TYPE_OUT_OF_RANGE, // SqlState = 'S1106'
|
|
DB_ERR_ROW_VALUE_OUT_OF_RANGE, // SqlState = 'S1107'
|
|
DB_ERR_CONCURRENCY_OPTION_OUT_OF_RANGE, // SqlState = 'S1108'
|
|
DB_ERR_INVALID_CURSOR_POSITION, // SqlState = 'S1109'
|
|
DB_ERR_INVALID_DRIVER_COMPLETION, // SqlState = 'S1110'
|
|
DB_ERR_INVALID_BOOKMARK_VALUE, // SqlState = 'S1111'
|
|
DB_ERR_DRIVER_NOT_CAPABLE, // SqlState = 'S1C00'
|
|
DB_ERR_TIMEOUT_EXPIRED // SqlState = 'S1T00'
|
|
};
|
|
|
|
struct DbStuff
|
|
{
|
|
HENV Henv;
|
|
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
|
|
{
|
|
char TypeName[DB_TYPE_NAME_LEN];
|
|
int FsqlType;
|
|
long Precision;
|
|
short CaseSensitive;
|
|
// short MinimumScale;
|
|
short MaximumScale;
|
|
} SqlTypeInfo;
|
|
|
|
class WXDLLEXPORT CcolInf
|
|
{
|
|
public:
|
|
char tableName[DB_MAX_TABLE_NAME_LEN+1];
|
|
char colName[DB_MAX_COLUMN_NAME_LEN+1];
|
|
int sqlDataType;
|
|
};
|
|
|
|
enum sqlLog
|
|
{
|
|
sqlLogOFF,
|
|
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:
|
|
|
|
// 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
|
|
|
|
// Private member functions
|
|
bool getDbInfo(void);
|
|
bool getDataTypeInfo(SWORD fSqlType, SqlTypeInfo &structSQLTypeInfo);
|
|
bool setConnectionOptions(void);
|
|
void logError(char *errMsg, char *SQLState);
|
|
|
|
public:
|
|
|
|
// The following structure contains database information gathered from the
|
|
// datasource when the datasource is first opened.
|
|
struct
|
|
{
|
|
char dbmsName[40]; // Name 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
|
|
char driverVer[60]; // Driver version
|
|
char serverName[80]; // Server Name, typically a connect string
|
|
char databaseName[128]; // Database filename
|
|
char outerJoins[2]; // Indicates whether the data source supports outer joins
|
|
char procedureSupport[2]; // Indicates whether the data source supports stored procedures
|
|
UWORD maxConnections; // Maximum # of connections the data source supports
|
|
UWORD maxStmts; // Maximum # of HSTMTs per HDBC
|
|
UWORD apiConfLvl; // ODBC API conformance level
|
|
UWORD cliConfLvl; // Indicates whether the data source is SAG compliant
|
|
UWORD sqlConfLvl; // SQL conformance level
|
|
UWORD cursorCommitBehavior; // Indicates how cursors are affected by a db commit
|
|
UWORD cursorRollbackBehavior; // Indicates how cursors are affected by a db rollback
|
|
UWORD supportNotNullClause; // Indicates if data source supports NOT NULL clause
|
|
char supportIEF[2]; // Integrity Enhancement Facility (Referential Integrity)
|
|
UDWORD txnIsolation; // Default transaction isolation level supported by the driver
|
|
UDWORD txnIsolationOptions; // Transaction isolation level options available
|
|
UDWORD fetchDirections; // Fetch directions supported
|
|
UDWORD lockTypes; // Lock types supported in SQLSetPos
|
|
UDWORD posOperations; // Position operations supported in SQLSetPos
|
|
UDWORD posStmts; // Position statements supported
|
|
UDWORD scrollConcurrency; // Concurrency control options supported for scrollable cursors
|
|
UDWORD scrollOptions; // Scroll Options supported for scrollable cursors
|
|
UDWORD staticSensitivity; // Indicates if additions, deletions and updates can be detected
|
|
UWORD txnCapable; // Indicates if the data source supports transactions
|
|
UDWORD loginTimeout; // Number seconds to wait for a login request
|
|
} dbInf;
|
|
|
|
// ODBC handles
|
|
HENV henv; // ODBC Environment handle
|
|
HDBC hdbc; // ODBC DB Connection handle
|
|
HSTMT hstmt; // ODBC Statement handle
|
|
|
|
// ODBC Error Inf.
|
|
char sqlState[20];
|
|
SDWORD nativeError;
|
|
char errorMsg[SQL_MAX_MESSAGE_LENGTH];
|
|
SWORD cbErrorMsg;
|
|
char errorList[DB_MAX_ERROR_HISTORY][DB_MAX_ERROR_MSG_LEN];
|
|
int DB_STATUS;
|
|
|
|
//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
|
|
// type name the data source uses for each logical data type.
|
|
// e.g. VARCHAR; Oracle calls it VARCHAR2.
|
|
SqlTypeInfo typeInfVarchar, typeInfInteger, typeInfFloat, typeInfDate;
|
|
|
|
// Public member functions
|
|
wxDB(HENV &aHenv);
|
|
bool Open(char *Dsn, char *Uid, char *AuthStr); // Data Source Name, User ID, Password
|
|
void Close(void);
|
|
bool CommitTrans(void);
|
|
bool RollbackTrans(void);
|
|
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 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[], char *userID=NULL);
|
|
char *GetDatabaseName(void) {return dbInf.dbmsName;}
|
|
char *GetDataSource(void) {return dsn;}
|
|
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, 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
|
|
|
|
// 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
|
|
{
|
|
DbList *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
|
|
};
|
|
|
|
|
|
#if __WXDEBUG__ > 0
|
|
#include "wx/object.h"
|
|
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.
|
|
|
|
wxDB WXDLLEXPORT *GetDbConnection(DbStuff *pDbStuff);
|
|
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
|
|
// using SQL_FETCH_NEXT until you've exhausted the list.
|
|
bool WXDLLEXPORT GetDataSource(HENV henv, char *Dsn, SWORD DsnMax, char *DsDesc, SWORD DsDescMax,
|
|
UWORD direction = SQL_FETCH_NEXT);
|
|
|
|
#endif
|