src/storage/Connection.cxx

   1 /***************************************************************************
   2  *   Copyright (C) 2007 by www.databasecache.com                           *
   3  *   Contact: praba_tuty@databasecache.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   ***************************************************************************/
  16 #include<SessionImpl.h>
  17 #include<Debug.h>
  18 #include<os.h>
  19 #include<Index.h>
  20 #include<Config.h>
  21 Connection::~Connection()
  22 {
  23     if (NULL != session) {
  24        session->rollback();
  25        //session->close();
  26        delete session;
  27        session = NULL;
  28     }
  29     Index::destroy();
  30 }
  31
  32 DbRetVal Connection::open(const char *username, const char *password)
  33 {
  34     if (username == NULL || password == NULL )
  35     {
  36         printError(ErrBadArg, "Username or password should not be NULL\n");
  37         return ErrBadArg;
  38     }
  39     if (strlen(username) > 64 || strlen(password) >64) return ErrBadArg;
  40     if (session == NULL) session = new SessionImpl();
  41     else
  42     {
  43        printError(ErrAlready, "User already logged in");
  44        return ErrAlready;
  45     }
  46     DbRetVal rv = session->open(username, password);
  47     if (rv != OK) { delete session; session = NULL; return rv; }
  48     rv = logger.startLogger(Conf::config.getLogFile());
  49     if (rv != OK) { delete session; session = NULL; return rv; }
  50     logFinest(logger, "User logged in %s",username);
  51     Index::init();
  52     return OK;
  53 }
  54
  55 DbRetVal Connection::close()
  56 {
  57     if (session == NULL) return ErrNoConnection;
  58     logFinest(logger, "User logged out");
  59     logger.stopLogger();
  60     session->rollback();
  61     delete session;  // this inturn calls session->close
  62     session = NULL;
  63     return OK;
  64 }
  65
  66 DatabaseManager* Connection::getDatabaseManager()
  67 {
  68     if (session == NULL) return NULL;
  69     return session->getDatabaseManager();
  70 }
  71
  72 UserManager* Connection::getUserManager()
  73 {
  74     if (session == NULL) return NULL;
  75     return session->getUserManager();
  76 }
  77
  78 DbRetVal Connection::startTransaction(IsolationLevel level)
  79 {
  80     if (session == NULL) return ErrNoConnection;
  81     if (level == WRITE_OSYNC) level = READ_REPEATABLE;
  82     return session->startTransaction(level);
  83 }
  84
  85
  86 DbRetVal Connection::commit()
  87 {
  88     if (session == NULL) return ErrNoConnection;
  89     return session->commit();
  90 }
  91
  92
  93 DbRetVal Connection::rollback()
  94 {
  95     if (session == NULL) return ErrNoConnection;
  96     return session->rollback();
  97 }