X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/1fc5dd6f8eb590992150b3998266fb50dfaab227..32db328c7a66ab2c479e1b9dc567b74e0f23257e:/include/wx/db.h diff --git a/include/wx/db.h b/include/wx/db.h index 25edff65da..f9054e0558 100644 --- a/include/wx/db.h +++ b/include/wx/db.h @@ -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 @@ -30,71 +37,124 @@ #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 #endif -#define ODBCVER 0x0250 -#include -#include +#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 +#elif defined(__WXMAC__) + 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 // msw + #define ODBCVER 0x0250 + #include + #include +#endif + +#ifdef __UNIX__ +/* +# ifndef strnicmp +# define strnicmp strncasecmp +# endif +# ifndef stricmp +# define stricmp strcasecmp +# endif +*/ +#elif defined(__WXMAC__) +#else +# include +#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 DB_TYPE_NAME_LEN = 40; -const DB_MAX_STATEMENT_LEN = 2048; -const DB_MAX_WHERE_CLAUSE_LEN = 1024; -const DB_MAX_ERROR_MSG_LEN = 512; -const DB_MAX_ERROR_HISTORY = 5; -const DB_MAX_TABLE_NAME_LEN = 128; -const DB_MAX_COLUMN_NAME_LEN = 128; - -const DB_DATA_TYPE_VARCHAR = 1; -const DB_DATA_TYPE_INTEGER = 2; -const DB_DATA_TYPE_FLOAT = 3; -const DB_DATA_TYPE_DATE = 4; - -const DB_SELECT_KEYFIELDS = 1; -const DB_SELECT_WHERE = 2; -const DB_SELECT_MATCHING = 3; -const DB_SELECT_STATEMENT = 4; - -const DB_UPD_KEYFIELDS = 1; -const DB_UPD_WHERE = 2; - -const DB_DEL_KEYFIELDS = 1; -const DB_DEL_WHERE = 2; -const DB_DEL_MATCHING = 3; - -const DB_WHERE_KEYFIELDS = 1; -const DB_WHERE_MATCHING = 2; - -const DB_CURSOR0 = 0; -const DB_CURSOR1 = 1; -const DB_CURSOR2 = 2; -//const DB_CURSOR3 = 3; -//const DB_CURSOR4 = 4; -//const DB_CURSOR5 = 5; - -const DB_GRANT_SELECT = 1; -const DB_GRANT_INSERT = 2; -const DB_GRANT_UPDATE = 4; -const DB_GRANT_DELETE = 8; -const DB_GRANT_ALL = DB_GRANT_SELECT | DB_GRANT_INSERT | DB_GRANT_UPDATE | DB_GRANT_DELETE; +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_FAILURE = 0, + DB_SUCCESS = 1, DB_ERR_NOT_IN_USE, DB_ERR_GENERAL_WARNING, // SqlState = '01000' DB_ERR_DISCONNECT_ERROR, // SqlState = '01002' @@ -190,9 +250,15 @@ 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 @@ -205,7 +271,7 @@ typedef struct short MaximumScale; } SqlTypeInfo; -class CcolInf +class WXDLLEXPORT CcolInf { public: char tableName[DB_MAX_TABLE_NAME_LEN+1]; @@ -219,7 +285,32 @@ enum sqlLog sqlLogON }; -class wxDB +enum dbms +{ + dbmsUNIDENTIFIED, + dbmsORACLE, + dbmsSYBASE_ASA, // Adaptive Server Anywhere + dbmsSYBASE_ASE, // Adaptive Server Enterprise + dbmsMS_SQL_SERVER, + dbmsMY_SQL, + dbmsPOSTGRES, + dbmsACCESS, + dbmsDBASE, + dbmsINFORMIX +}; + +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: @@ -235,7 +326,9 @@ private: bool getDbInfo(void); bool getDataTypeInfo(SWORD fSqlType, SqlTypeInfo &structSQLTypeInfo); bool setConnectionOptions(void); - void logError(char *errMsg, char *SQLState); + void logError(const char *errMsg, const char *SQLState); + + bool fwdOnlyCursors; public: @@ -244,12 +337,12 @@ public: struct { char dbmsName[40]; // Name of the dbms product - char dbmsVer[20]; // Version # of the dbms product + char dbmsVer[64]; // Version # of the dbms product char driverName[40]; // Driver name - char odbcVer[20]; // ODBC version of the driver - char drvMgrOdbcVer[20]; // ODBC version of the driver manager - char driverVer[40]; // Driver version - char serverName[40]; // Server Name, typically a connect string + 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 @@ -291,6 +384,9 @@ 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 @@ -299,7 +395,7 @@ public: SqlTypeInfo typeInfVarchar, typeInfInteger, typeInfFloat, typeInfDate; // Public member functions - wxDB(HENV &aHenv); + wxDB(HENV &aHenv, bool FwdOnlyCursors=(bool)TRUE); bool Open(char *Dsn, char *Uid, char *AuthStr); // Data Source Name, User ID, Password void Close(void); bool CommitTrans(void); @@ -307,24 +403,29 @@ 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 ExecSql(char *pSqlStmt); - 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[]); + bool CreateView(const char *viewName, const char *colList, const char *pSqlStmt, bool attemptDrop=TRUE); + bool DropView(const char *viewName); + bool ExecSql(const char *pSqlStmt); + bool GetNext(void); + bool GetData(UWORD colNo, SWORD cType, PTR pData, SDWORD maxLen, SDWORD FAR *cbReturned); + bool Grant(int privileges, const char *tableName, const char *userList = "PUBLIC"); + int TranslateSqlState(const char *SQLState); + bool Catalog(const char *userID, const char *fileName = "Catalog.txt"); + CcolInf *GetColumns(char *tableName[], const 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 - 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); + 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 = "sqllog.txt", bool append = FALSE); + bool WriteSqlLog(const char *logMsg); + DBMS Dbms(void); + bool FwdOnlyCursors(void) {return fwdOnlyCursors;} }; // wxDB @@ -342,20 +443,35 @@ struct DbList DbList *PtrNext; // Pointer to next item in the list }; + +#ifdef __WXDEBUG__ +#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 *GetDbConnection(DbStuff *pDbStuff); -bool FreeDbConnection(wxDB *pDb); -void CloseDbConnections(void); -int NumberDbConnectionsInUse(void); +wxDB WXDLLEXPORT *GetDbConnection(DbStuff *pDbStuff, bool FwdOnlyCursors=(bool)TRUE); +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, const 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 GetDataSource(HENV henv, char *Dsn, SWORD DsnMax, char *DsDesc, SWORD DsDescMax, +bool WXDLLEXPORT GetDataSource(HENV henv, const char *Dsn, SWORD DsnMax, const char *DsDesc, SWORD DsDescMax, UWORD direction = SQL_FETCH_NEXT); #endif