| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| |
| // --------------------------------------------------------------------------------- |
| // |
| // File: GODBC32.CPP |
| // |
| // Author: Hongbin Ma |
| // |
| // Purpose: Entry point for the Kylin ODBC |
| // Contains the DllMain as entry point function |
| // Contains log initialization-deinitialization function |
| // Contains in commented form the deprecated functions |
| // Contains more details about the driver as comments |
| // Finally compiled into a DLL |
| // |
| // Note: The driver is supposed to be an ODBC 3.0 driver. |
| // If you're to study the code, |
| // Take a look at KylinODBC.h to learn about the prerequisites |
| // |
| // ---------------------------------------------------------------------------------- |
| #include "stdafx.h" |
| |
| #include <stdio.h> |
| |
| |
| // ------------------------- global variables ------------------------- |
| HINSTANCE ghInstDLL = 0; |
| Long gLogFile = -1; |
| Word gLogUsage = 0; |
| |
| |
| // ----------------------------------------------------------------------- |
| // DLL enrty point |
| // ----------------------------------------------------------------------- |
| |
| BOOL WINAPI DllMain ( HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved ) |
| { |
| // note |
| // key functions it needs to perform |
| // 1. initialize the log system if in debug mode |
| |
| // Perform actions based on the reason for calling. |
| switch ( fdwReason ) |
| { |
| case DLL_PROCESS_ATTACH : |
| // Initialize once for each new process. |
| // Return FALSE to fail DLL load. |
| OutputDebugString ( "Process Attached\n" ); // for DBMON |
| // start log |
| _ODBCLogStart (); |
| #ifdef _DEBUG |
| MessageBox ( GetDesktopWindow(), "Entry into driver DLL - PROCESS_ATTACH", "Kylin ODBC driver", MB_OK ); |
| #endif |
| break; |
| |
| case DLL_THREAD_ATTACH : |
| #ifdef _DEBUG |
| // start log |
| _ODBCLogStart (); |
| #endif |
| // log msg |
| OutputDebugString ( "Thread Attached\n" ); // for DBMON |
| // Do thread-specific initialization. |
| break; |
| |
| case DLL_THREAD_DETACH : |
| #ifdef _DEBUG |
| // stop log |
| _ODBCLogStop ( 0 ); |
| #endif |
| // Do thread-specific cleanup. |
| break; |
| |
| case DLL_PROCESS_DETACH : |
| #ifdef _DEBUG |
| // log msg |
| //__ODBCLOG(_ODBCLogMsg(LogLevel_DEBUG, "Thread de-tach")); |
| // stop log |
| _ODBCLogStop ( 1 ); |
| #endif |
| // Perform any necessary cleanup. |
| break; |
| } |
| |
| // check if instance has not been saved |
| if ( ghInstDLL == 0 ) |
| { |
| ghInstDLL = hinstDLL; |
| } |
| |
| return TRUE; // Successful DLL_PROCESS_ATTACH. |
| } |
| |
| |
| // ----------------------------------------------------------------------- |
| // Notes |
| // |
| // |
| // |
| // |
| // |
| // ----------------------------------------------------------------------- |
| |
| |
| // ----------------------------------------------------------------------- |
| // Modules |
| // |
| // driver.DEF - Exported function. Required by linker to export the |
| // functions. |
| // |
| // KO_ALLOC.CPP - Contains function for managing allocation and release |
| // of the three structures/handles - Environment, |
| // Connection and Statement. Statements r |
| // encapsulated inside connection while all connections |
| // inside environment. |
| // |
| // KO_ATTR.CPP - Contains the attribute/option set/get functions |
| // for environment, connection and statement |
| // also contains some other functions like setting of |
| // cursor name etc. |
| // |
| // KO_CONN.CPP - Contains the main connection functions more |
| // specifically SQLDriverConnect. |
| // |
| // KO_CTLG.CPP - Contains catalog functions |
| // Functions that allow collection of metadata/information |
| // about the database are termed as catalog functions. |
| // |
| // KO_DESC.CPP - Contains descriptor functions. |
| // As explained in the article, descriptors r the heart |
| // as far as driver design is concerned. Descriptors |
| // r essntially data structures to encapsulate one set/type of |
| // data associated with ODBC connection. |
| // |
| // KO_DIAG.CPP - Contains DIAG related functions. |
| // Contains debug/log related functions. |
| // The diagnostic functions work as per ODBC |
| // specification while the log functions |
| // are useful for debugging. |
| // |
| // KO_DTYPE.CPP - Contains functions related to data types as per ODBC. |
| // For defining the type of data ODBC uses three params |
| // Concise Type, Verbose Type and DateTime Interval. |
| // All of these r intertwined, setting one of these |
| // influences the other two. |
| // |
| // KO_EXEC.CPP - Contains function for executing queries. |
| // After a request is prepared by the caller |
| // control is passed to _SQLExecStmtFromReq in this |
| // file. Alse SQLExecDirect, SQLExecute, SQLPrepare |
| // r implemented in this file |
| // |
| // KO_FETCH.CPP - Contains function for fetching results. |
| // As explained in the article ODBC has a |
| // defined way in which the data is made available. |
| // Client specified the buffer, its size and return |
| // size placeholder. These are then used by the |
| // driver automatically when fetch funtions r |
| // called by the client |
| // |
| // KO_INFO.CPP - This file is dedicated to the single function SQLGetInfo. |
| // Almost all information about your driver, server |
| // and current state required by the client is obtained |
| // using this function. |
| // |
| // KO_PARAM.CPP - Functions for implementing paramterized queries. Not |
| // implemented in this sample. |
| // |
| // |
| // KO_UTILS.CPP - contains generic utility functions used across files/modules. |
| // Data conversion and copying functions w.r.t ODBC type params |
| // like its type, size, its size pointer, src data and src size etc. |
| // |
| // ----------------------------------------------------------------------- |
| |
| // ----------------------------------------------------------------------- |
| // Header Files |
| // |
| // KylinODBC.h - Main header file for driver |
| // |
| // SQL.H - Main ODBC file on Win32 |
| // |
| // SQLEXT.H - Main ODBC file on Win32 |
| // |
| // SQLTYPES.H - ODBC types |
| // |
| // ----------------------------------------------------------------------- |
| |
| |
| // ----------------------------------------------------------------------- |
| // ------------------------- deprecated functions ------------------------ |
| // ----------------------------------------------------------------------- |
| |
| |
| /********** |
| |
| RETCODE SQL_API SQLSetParam ( HSTMT arg0, UWORD arg1, SWORD arg2, SWORD arg3, UDWORD arg4, SWORD arg5, PTR arg6, UNALIGNED SDWORD * arg7) |
| { |
| // has been mapped to SQLBindParameter |
| // hence not exported |
| |
| _LogMessage("SQLSetParam called"); |
| return(SQL_SUCCESS); |
| } |
| |
| |
| |
| RETCODE SQL_API SQLError ( HENV arg0, HDBC arg1, HSTMT arg2, UCHAR * arg3, UNALIGNED SDWORD * arg4, UCHAR * arg5, SWORD arg6, UNALIGNED SWORD * arg7) |
| { |
| // has been mapped to SQLDiagRec |
| // hence not exported |
| |
| _LogMessage("SQLError called"); |
| |
| return(SQL_NO_DATA_FOUND); |
| } |
| |
| RETCODE SQL_API SQLTransact ( HENV arg0, HDBC arg1, UWORD arg2 ) |
| { |
| // has been mapped to SQLEndTran |
| // hence not exported |
| |
| _LogMessage("SQLTransact called"); |
| return(SQL_SUCCESS); |
| } |
| |
| |
| |
| RETCODE SQL_API SQLParamOptions (HSTMT arg0, |
| UDWORD arg1, |
| UNALIGNED UDWORD * arg2) |
| { |
| // has been mapped to SQLSetStmtAttr |
| // hence not exported |
| |
| _LogMessage("SQLParamOptions called"); |
| return(SQL_SUCCESS); |
| } |
| |
| |
| RETCODE SQL_API SQLSetScrollOptions (HSTMT arg0, |
| UWORD arg1, |
| SDWORD arg2, |
| UWORD arg3) |
| { |
| // has been mapped to SQLSetStmtAttr |
| // hence not exported |
| |
| _LogMessage("SQLSetScrollOptions called"); |
| return(SQL_SUCCESS); |
| } |
| |
| |
| RETCODE SQL_API SQLBindParam (SQLHSTMT arg0, |
| SQLUSMALLINT arg1, |
| SQLSMALLINT arg2, |
| SQLSMALLINT arg3, |
| SQLUINTEGER arg4, |
| SQLSMALLINT arg5, |
| SQLPOINTER arg6, |
| SQLINTEGER * arg7) |
| { |
| // has been mapped to SQLBindParameter |
| // hence not exported |
| |
| _LogMessage("SQLBindParam called"); |
| return(SQL_SUCCESS); |
| } |
| |
| |
| RETCODE SQL_API SQLSetConnectOption ( HDBC arg0, UWORD arg1, UDWORD arg2 ) |
| { |
| // has been mapped to SQLSetConnectAttr |
| // hence not exported |
| |
| _LogMessage("SQLSetConnectOption called\n"); |
| return(SQL_SUCCESS); |
| } |
| |
| ///// SQLGetConnectOption ///// |
| |
| RETCODE SQL_API SQLGetConnectOption ( HDBC arg0, UWORD arg1, PTR arg2 ) |
| { |
| // has been mapped to SQLGetConnectAttr |
| // hence not exported |
| |
| _LogMessage("SQLGetConnectOption called"); |
| return(SQL_SUCCESS); |
| } |
| |
| |
| ///// SQLGetStmtOption ///// |
| |
| RETCODE SQL_API SQLGetStmtOption ( HSTMT arg0, UWORD arg1, PTR arg2 ) |
| { |
| // has been mapped to SQLGetStmtAttr |
| // hence not exported |
| |
| _LogMessage("SQLGetStmtOption called"); |
| return(SQL_SUCCESS); |
| } |
| |
| |
| ///// SQLSetStmtOption ///// |
| |
| RETCODE SQL_API SQLSetStmtOption ( HSTMT arg0, UWORD arg1, UDWORD arg2 ) |
| { |
| // has been mapped to SQLSetStmtAttr |
| // hence not exported |
| |
| _LogMessage("SQLSetStmtOption called, Fld: %d, Value: %d", arg1, arg2 ); |
| return(SQL_SUCCESS); |
| } |
| |
| |
| |
| |
| RETCODE SQL_API SQLColAttributes ( HSTMT arg0, UWORD arg1, UWORD arg2, PTR arg3, SWORD arg4, UNALIGNED SWORD * arg5, UNALIGNED SDWORD * arg6 ) |
| { |
| // has been mapped to SQLColAttribute |
| // hence not exported |
| |
| _LogMessage("SQLColAttributes called - deprecated ????"); |
| return SQL_SUCCESS; |
| } |
| |
| //////////////// DRIVER MANAGER |
| |
| RETCODE SQL_API SQLDrivers (HENV arg0, |
| UWORD arg1, |
| UCHAR * arg2, |
| SWORD arg3, |
| SWORD * arg4, |
| UCHAR * arg5, |
| SWORD arg6, |
| SWORD * arg7) |
| { |
| // implemented solely only by driver manager |
| // hence not exported |
| |
| _LogMessage("SQLDrivers called"); |
| return(SQL_SUCCESS); |
| } |
| |
| |
| RETCODE SQL_API SQLDataSources (HENV arg0, UWORD arg1, UCHAR * arg2, SWORD arg3, SWORD * arg4, UCHAR * arg5, SWORD arg6, SWORD * arg7) |
| { |
| // implemented solely only by driver manager |
| // hence not exported |
| |
| _LogMessage("SQLDataSources called\n"); |
| return(SQL_SUCCESS); |
| } |
| |
| |
| ****************** */ |
| |
