src/sqlnetwork/SqlNwConnection.cxx

   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 #include <SqlNwConnection.h>
  21 #include <Network.h>
  22 #include<os.h>
  23 #include <CSql.h>
  24
  25 DbRetVal SqlNwConnection::connect (char *user, char * pass)
  26 {
  27     DbRetVal rv = OK;
  28     if (isConnOpen) {
  29         printError(ErrAlready, "Connection is already open");
  30         return ErrAlready;
  31     }
  32     nwClient = new TCPClient();
  33     int bufsize = 2 * IDENTIFIER_LENGTH + sizeof(int);
  34     nwClient->setHost(hostname, port, 123);
  35     rv = nwClient->connect();
  36     if (rv != OK) {
  37         printError(rv, "Connection failed");
  38         return rv;
  39     }
  40     SqlPacketConnect *pkt = new SqlPacketConnect();
  41     pkt->setConnParam(user, pass, sqlApiImplType);
  42     pkt->setBufferSize(bufsize);
  43     char * buffer = (char *) malloc(bufsize);
  44     pkt->setBuffer(buffer);
  45     pkt->marshall();
  46     rv = send(SQL_NW_PKT_CONNECT, buffer, bufsize);
  47     if (rv != OK) {
  48         printError(rv, "Data could not be sent");
  49         return rv;
  50     }
  51     int response = 0;
  52     rv = nwClient->receive();
  53     ResponsePacket *rpkt = (ResponsePacket *) ((TCPClient *)nwClient)->respPkt;
  54     char *ptr = (char *) &rpkt->retVal;
  55     if (*ptr != 1) {
  56         printError(ErrPeerResponse, "%s", rpkt->errorString);
  57         nwClient->disconnect();
  58         delete nwClient;
  59         delete pkt;
  60         return ErrPeerResponse;
  61     }
  62     isConnOpen = true;
  63     delete pkt;
  64     return rv;
  65 }
  66 DbRetVal SqlNwConnection::disconnect()
  67 {
  68     DbRetVal rv = OK;
  69     if (! isConnOpen) {
  70         printError(ErrNoConnection, "No connection present");
  71         return ErrNoConnection;
  72     }
  73     rv = nwClient->disconnect();
  74     isConnOpen=false;
  75     delete nwClient;
  76     return rv;
  77 }
  78
  79 DbRetVal SqlNwConnection::beginTrans(IsolationLevel isoLevel, TransSyncMode mode)
  80 {
  81    if (! isConnOpen) {
  82         printError(ErrNoConnection, "No connection present");
  83         return ErrNoConnection;
  84     }
  85     return OK;
  86 }
  87
  88 DbRetVal SqlNwConnection::commit()
  89 {
  90     if (! isConnOpen) {
  91         printError(ErrNoConnection, "No connection present");
  92         return ErrNoConnection;
  93     }
  94     DbRetVal rv = OK;
  95     rv = nwClient->send(SQL_NW_PKT_COMMIT, NULL, 0);
  96     int response = 0;
  97     return nwClient->receive();
  98 }
  99
 100 DbRetVal SqlNwConnection::rollback()
 101 {
 102     if (! isConnOpen) {
 103         printError(ErrNoConnection, "No connection present");
 104         return ErrNoConnection;
 105     }
 106     DbRetVal rv = OK;
 107     rv = nwClient->send(SQL_NW_PKT_ROLLBACK, NULL, 0);
 108     int response = 0;
 109     return nwClient->receive();
 110 }
 111