/* ==================================================================== * The Vovida Software License, Version 1.0  *  * Copyright (c) 2000 Vovida Networks, Inc.  All rights reserved. *  * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: *  * 1. Redistributions of source code must retain the above copyright *    notice, this list of conditions and the following disclaimer. *  * 2. Redistributions in binary form must reproduce the above copyright *    notice, this list of conditions and the following disclaimer in *    the documentation and/or other materials provided with the *    distribution. *  * 3. The names "VOCAL", "Vovida Open Communication Application Library", *    and "Vovida Open Communication Application Library (VOCAL)" must *    not be used to endorse or promote products derived from this *    software without prior written permission. For written *    permission, please contact vocal@vovida.org. * * 4. Products derived from this software may not be called "VOCAL", nor *    may "VOCAL" appear in their name, without prior written *    permission of Vovida Networks, Inc. *  * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND * NON-INFRINGEMENT ARE DISCLAIMED.  IN NO EVENT SHALL VOVIDA * NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES * IN EXCESS OF $1,000, NOR FOR ANY INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * DAMAGE. *  * ==================================================================== *  * This software consists of voluntary contributions made by Vovida * Networks, Inc. and many individuals on behalf of Vovida Networks, * Inc.  For more information on Vovida Networks, Inc., please see * <http://www.vovida.org/>. * */#ifndef DBCONNECTION_HXX#define DBCONNECTION_HXX#include <string>#include <vector>#include <map>#include "DBTypes.h"/**  * This is the base class from which each concrete database  * connection class derives.  *//// Forward declare DBResultsetclass DBResultset;/// DBConnection class- Abstract client interface classclass DBConnection{    public:        /// Constructor        DBConnection(){};        /// Destructor        virtual ~DBConnection(){};  /*   * The next functions provide a direct SQL interface to the database   */  /**    * Executes a 'SELECT' query.   * @param Sqlcmd string of SQL command    * @return resultset object   */     virtual DBResultset* DBSQLSelect (const string& Sqlcmd) = 0;    /**   * Executes a given SQL query.   * @param Sqlcmd string of SQL command    * @return boolean to tell is the query has failed   */  virtual bool DBSQLExec(const string& Sqlcmd) = 0;  /**    * Executes an 'INSERT' query.   * @param Sqlcmd string of SQL command    * @return boolean to tell is the query has failed   */  virtual bool DBSQLInsert(const string& Sqlcmd) = 0;    /**    * Executes an 'UPDATE' query.   * @param Sqlcmd string of SQL command    * @return boolean to tell is the query has failed   */      virtual bool DBSQLUpdate(const string& Sqlcmd) = 0;    /**    * Executes an 'DELETE' query.   * @param Sqlcmd string of SQL command    * @return boolean to tell is the query has failed   */     virtual bool DBSQLDelete(const string& Sqlcmd) = 0;  /**    * Checks the status of a connection.   * @return true if the connection is OK, false otherwise.   */   virtual bool checkDBCon() = 0;};#endif