demos/dbbrowse/browsedb.h

   1 //----------------------------------------------------------------------------------------
   2 // Name:        browsedb.h
   3 // Purpose:     a wxDB class
   4 // Author:      Mark Johnson, mj10777@gmx.net
   5 // Modified by:
   6 // Created:     19991127.mj10777
   7 // Copyright:   (c) Mark Johnson
   8 // Licence:     wxWindows license
   9 // RCS-ID:      $Id$
  10 //----------------------------------------------------------------------------------------
  11 //-- Zu tun in browsedb.h
  12 //----------------------------------------------------------------------------------------
  13 //-- 1)
  14 //----------------------------------------------------------------------------------------
  15 // Global structure for holding ODBC connection information
  16 //----------------------------------------------------------------------------------------
  17 extern struct DbStuff DbConnectInf;
  18 class MainDoc;
  19 //----------------------------------------------------------------------------------------
  20 class BrowserDB
  21 {
  22  public:
  23  //---------------------------------------------------------------------------------------
  24  // Pointer to the main database connection used in the program.  This
  25  // pointer would normally be used for doing things as database lookups
  26  // for user login names and passwords, getting workstation settings, etc.
  27  // ---> IMPORTANT <---
  28  //
  29  //  For each database object created which uses this wxDB pointer
  30  //    connection to the database, when a CommitTrans() or RollBackTrans()
  31  //    will commit or rollback EVERY object which uses this wxDB pointer.
  32  //
  33  //    To allow each table object (those derived from wxTable) to be
  34  //    individually committed or rolled back, you MUST use a different
  35  //    instance of wxDB in the constructor of the table.  Doing so creates
  36  //  more overhead, and will use more database connections (some DBs have
  37  //    connection limits...), so use connections sparringly.
  38  //
  39  //  It is recommended that one "main" database connection be created for
  40  //  the entire program to use for READ-ONLY database accesses, but for each
  41  //  table object which will do a CommitTrans() or RollbackTrans() that a
  42  // new wxDB object be created and used for it.
  43  //---------------------------------------------------------------------------------------
  44   wxDB*          db_BrowserDB;
  45   wxDbInf*       ct_BrowserDB;
  46   wxColInf*      cl_BrowserDB;
  47   wxString       ODBCSource, UserName, Password;
  48   MainDoc *pDoc;
  49  //---------------------------------------------------------------------------------------
  50   wxString       Temp0, Temp1, Temp2, Temp3, Temp4, Temp5;
  51   wxString       ODBCText;
  52   wxTextCtrl*    p_LogWindow;
  53   wxString       s_SqlTyp[25];
  54   int            i_SqlTyp[25];
  55   wxString       s_dbTyp[5];
  56   int            i_dbTyp[5];
  57   int            i_Which;
  58   int            i_Records;
  59   int            i_Cols;
  60  //---------------------------------------------------------------------------------------
  61   BrowserDB();
  62   ~BrowserDB();
  63   void Zeiger_auf_NULL(int Art);
  64   bool Initialize(int Quite);
  65  //---------------------------------------------------------------------------------------
  66   bool           OnStartDB(int Quite);
  67   bool           OnCloseDB(int Quite);
  68   bool           OnSelect(wxString tb_Name,int Quite);
  69   bool           OnExecSql(wxString SQLStmt,int Quite);
  70   bool           OnGetNext(int Cols,int Quite);
  71   wxDbInf*       OnGetCatalog(int Quite);
  72   wxColInf*      OnGetColumns(char *tableName, int numCols,int Quite);
  73   void           OnFillSqlTyp();
  74   void           OnFilldbTyp();
  75  //---------------------------------------------------------------------------------------
  76 };  // BrowserDB class definition
  77 //----------------------------------------------------------------------------------------