include/SqlGwConnection.h

   1 /***************************************************************************
   2  *   Copyright (C) 2007 by Prabakaran Thirumalai   *
   3  *   praba_tuty@yahoo.com   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifndef SQLGWCONNECTION_H
  21 #define SQLGWCONNECTION_H
  22 #include<CSql.h>
  23 #include<AbsSqlConnection.h>
  24 #include<AbsSqlConnection.h>
  25 #include<SqlFactory.h>
  26 #include<Network.h>
  27
  28 //List Contains MultiDsn Elements
  29 struct MultiDSN
  30 {
  31    char dsn[IDENTIFIER_LENGTH];
  32    AbsSqlConnection *adapter;
  33    struct MultiDSN *next;
  34    bool isConnected;
  35    bool toCommit;
  36 };
  37
  38 enum GwHandler
  39 {
  40     NoHandler =0,
  41     CSqlHandler = 1,
  42     AdapterHandler =2,
  43     CSqlAndAdapterHandler =3
  44 };
  45
  46 class SqlGwConnection : public AbsSqlConnection
  47 {
  48     Connection dummyConn;
  49     AbsSqlConnection *adapter;
  50    // struct MultiDSN *multiAdapter;
  51     bool isCSqlConnected;
  52     bool isAdapterConnected;
  53     char username[IDENTIFIER_LENGTH];
  54     char password[IDENTIFIER_LENGTH];
  55
  56     public:
  57     static List cacheList;
  58     //Head of MultiDsn List
  59     struct MultiDSN *multi_adapter_head;
  60     int noOfCon;
  61     GwHandler txnHdlr;
  62     TransSyncMode mode;
  63     SqlGwConnection(){innerConn = NULL; mode = OSYNC; multi_adapter_head = NULL; noOfCon = 0; }
  64     ~SqlGwConnection();
  65
  66     bool isTableCached(char *name);
  67     void setTxnHandler(GwHandler hdlr) { txnHdlr = hdlr; }
  68     GwHandler getTxnHandler() { return txnHdlr; }
  69
  70     DbRetVal connect (char *user, char * pass);
  71
  72     DbRetVal disconnect();
  73
  74     DbRetVal commit();
  75
  76     DbRetVal rollback();
  77
  78     DbRetVal beginTrans (IsolationLevel isoLevel, TransSyncMode mode = OSYNC);
  79
  80     friend class SqlFactory;
  81     bool isCsqlConnected(){ return isCSqlConnected;}
  82     bool isAdptConnected(){ return isAdapterConnected;}
  83     DbRetVal createAdapters(SqlGwConnection *gateway);
  84     void setAdapter(AbsSqlConnection *conn, char *dsn);
  85     AbsSqlConnection* getAdapterConnection(char *dsn);
  86
  87     DbRetVal connectCSqlIfNotConnected();
  88     DbRetVal connectAdapterIfNotConnected();
  89     DbRetVal populateCachedTableList();
  90     //Note::forced to implement this as it is pure virtual in base class
  91     Connection& getConnObject(){  return dummyConn; }
  92 };
  93
  94 #endif