projects / wxWidgets.git / blame
| Commit | Line | Data |
|---|---|---|
| 1a6944fd RR |
1 | #ifndef _HENV_H |
| 2 | #define _HENV_H | |
| 3 | ||
| 4 | # include <../iodbc/config.h> | |
| 5 | # include <../iodbc/dlproc.h> | |
| 6 | ||
| 7 | # include <../iodbc/isql.h> | |
| 8 | # include <../iodbc/isqlext.h> | |
| 9 | ||
| 10 | enum { | |
| 11 | #if (ODBCVER >= 0x0300) | |
| 12 | en_AllocHandle = SQL_API_SQLALLOCHANDLE, | |
| 13 | en_FreeHandle = SQL_API_SQLFREEHANDLE, | |
| 14 | #endif | |
| 15 | en_AllocEnv = SQL_API_SQLALLOCENV, | |
| 16 | en_AllocConnect = SQL_API_SQLALLOCCONNECT, | |
| 17 | en_Connect = SQL_API_SQLCONNECT, | |
| 18 | en_DriverConnect = SQL_API_SQLDRIVERCONNECT, | |
| 19 | en_BrowseConnect = SQL_API_SQLBROWSECONNECT, | |
| 20 | ||
| 21 | en_DataSources = SQL_API_SQLDATASOURCES, | |
| 22 | en_Drivers = SQL_API_SQLDRIVERS, | |
| 23 | en_GetInfo = SQL_API_SQLGETINFO, | |
| 24 | en_GetFunctions = SQL_API_SQLGETFUNCTIONS, | |
| 25 | en_GetTypeInfo = SQL_API_SQLGETTYPEINFO, | |
| 26 | ||
| 27 | en_SetConnectOption = SQL_API_SQLSETCONNECTOPTION, | |
| 28 | en_GetConnectOption = SQL_API_SQLGETCONNECTOPTION, | |
| 29 | en_SetStmtOption = SQL_API_SQLSETSTMTOPTION, | |
| 30 | en_GetStmtOption = SQL_API_SQLGETSTMTOPTION, | |
| 31 | ||
| 32 | en_AllocStmt = SQL_API_SQLALLOCSTMT, | |
| 33 | en_Prepare = SQL_API_SQLPREPARE, | |
| 34 | en_BindParameter = SQL_API_SQLBINDPARAMETER, | |
| 35 | en_ParamOptions = SQL_API_SQLPARAMOPTIONS, | |
| 36 | en_GetCursorName = SQL_API_SQLGETCURSORNAME, | |
| 37 | en_SetCursorName = SQL_API_SQLSETCURSORNAME, | |
| 38 | en_SetScrollOptions = SQL_API_SQLSETSCROLLOPTIONS, | |
| 39 | en_SetParam = SQL_API_SQLSETPARAM, | |
| 40 | ||
| 41 | en_Execute = SQL_API_SQLEXECUTE, | |
| 42 | en_ExecDirect = SQL_API_SQLEXECDIRECT, | |
| 43 | en_NativeSql = SQL_API_SQLNATIVESQL, | |
| 44 | en_DescribeParam = SQL_API_SQLDESCRIBEPARAM, | |
| 45 | en_NumParams = SQL_API_SQLNUMPARAMS, | |
| 46 | en_ParamData = SQL_API_SQLPARAMDATA, | |
| 47 | en_PutData = SQL_API_SQLPUTDATA, | |
| 48 | ||
| 49 | en_RowCount = SQL_API_SQLROWCOUNT, | |
| 50 | en_NumResultCols = SQL_API_SQLNUMRESULTCOLS, | |
| 51 | en_DescribeCol = SQL_API_SQLDESCRIBECOL, | |
| 52 | en_ColAttributes = SQL_API_SQLCOLATTRIBUTES, | |
| 53 | en_BindCol = SQL_API_SQLBINDCOL, | |
| 54 | en_Fetch = SQL_API_SQLFETCH, | |
| 55 | en_ExtendedFetch = SQL_API_SQLEXTENDEDFETCH, | |
| 56 | en_GetData = SQL_API_SQLGETDATA, | |
| 57 | en_SetPos = SQL_API_SQLSETPOS, | |
| 58 | en_MoreResults = SQL_API_SQLMORERESULTS, | |
| 59 | en_Error = SQL_API_SQLERROR, | |
| 60 | ||
| 61 | en_ColumnPrivileges = SQL_API_SQLCOLUMNPRIVILEGES, | |
| 62 | en_Columns = SQL_API_SQLCOLUMNS, | |
| 63 | en_ForeignKeys = SQL_API_SQLFOREIGNKEYS, | |
| 64 | en_PrimaryKeys = SQL_API_SQLPRIMARYKEYS, | |
| 65 | en_ProcedureColumns = SQL_API_SQLPROCEDURECOLUMNS, | |
| 66 | en_Procedures = SQL_API_SQLPROCEDURES, | |
| 67 | en_SpecialColumns = SQL_API_SQLSPECIALCOLUMNS, | |
| 68 | en_Statistics = SQL_API_SQLSTATISTICS, | |
| 69 | en_TablePrivileges = SQL_API_SQLTABLEPRIVILEGES, | |
| 70 | en_Tables = SQL_API_SQLTABLES, | |
| 71 | ||
| 72 | en_FreeStmt = SQL_API_SQLFREESTMT, | |
| 73 | en_Cancel = SQL_API_SQLCANCEL, | |
| 74 | en_Transact = SQL_API_SQLTRANSACT, | |
| 75 | ||
| 76 | en_Disconnect = SQL_API_SQLDISCONNECT, | |
| 77 | en_FreeConnect = SQL_API_SQLFREECONNECT, | |
| 78 | en_FreeEnv = SQL_API_SQLFREEENV, | |
| 79 | ||
| 80 | en_NullProc = SYSERR | |
| 81 | }; | |
| 82 | ||
| 83 | typedef struct { | |
| 84 | int type; /* must be 1st field */ | |
| 85 | ||
| 86 | HENV henv; /* driver's env list */ | |
| 87 | HDBC hdbc; /* driver's dbc list */ | |
| 88 | HERR herr; /* err list */ | |
| 89 | int state; | |
| 90 | } GENV_t; | |
| 91 | ||
| 92 | typedef struct { | |
| 93 | HENV next; /* next attached env handle */ | |
| 94 | int refcount; /* Driver's bookkeeping reference count */ | |
| 95 | HPROC dllproc_tab[SQL_EXT_API_LAST + 1]; /* driver api calls */ | |
| 96 | ||
| 97 | HENV dhenv; /* driver env handle */ | |
| 98 | HDLL hdll; /* drvier share library handle */ | |
| 99 | } ENV_t; | |
| 100 | ||
| 101 | /* Note: | |
| 102 | * | |
| 103 | * - ODBC applications only know about global environment handle, | |
| 104 | * a void pointer points to a GENV_t object. There is only one | |
| 105 | * this object per process(however, to make the library reentrant, | |
| 106 | * we still keep this object on heap). Applications only know | |
| 107 | * address of this object and needn't care about its detail. | |
| 108 | * | |
| 109 | * - ODBC driver manager knows about instance environment handles, | |
| 110 | * void pointers point to ENV_t objects. There are maybe more | |
| 111 | * than one this kind of objects per process. However, multiple | |
| 112 | * connections to a same data source(i.e. call same share library) | |
| 113 | * will share one instance environment object. | |
| 114 | * | |
| 115 | * - ODBC drvier manager knows about their own environemnt handle, | |
| 116 | * a void pointer point to a driver defined object. Every driver | |
| 117 | * keeps one of its own environment object and driver manager | |
| 118 | * keeps address of it by the 'dhenv' field in the instance | |
| 119 | * environment object without care about its detail. | |
| 120 | * | |
| 121 | * - Applications can get driver's environment object handle by | |
| 122 | * SQLGetInfo() with fInfoType equals to SQL_DRIVER_HENV | |
| 123 | */ | |
| 124 | ||
| 125 | #endif |