base/mysql.cc

   1 /*
   2  * Copyright (c) 2003-2004 The Regents of The University of Michigan
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include <iostream>
  30
  31 #include "base/mysql.hh"
  32
  33 using namespace std;
  34
  35 namespace MySQL {
  36
  37 inline const char *
  38 charstar(const string &string)
  39 {
  40     return string.empty() ? NULL : string.c_str();
  41 }
  42
  43 ostream &
  44 operator<<(ostream &stream, const Error &error)
  45 {
  46     stream << error.string();
  47     return stream;
  48 }
  49
  50 /*
  51  * The connection class
  52  */
  53 Connection::Connection()
  54     : valid(false)
  55 {
  56 }
  57
  58 Connection::~Connection()
  59 {
  60     if (valid)
  61         close();
  62 }
  63
  64
  65 bool
  66 Connection::connect(const string &xhost, const string &xuser,
  67                     const string &xpasswd, const string &xdatabase)
  68 {
  69     if (connected())
  70         return error.set("Already Connected");
  71
  72     _host = xhost;
  73     _user = xuser;
  74     _passwd = xpasswd;
  75     _database = xdatabase;
  76
  77     error.clear();
  78
  79     mysql_init(&mysql);
  80     mysql_options(&mysql, MYSQL_OPT_COMPRESS, 0); // might want to be 1
  81     mysql_options(&mysql, MYSQL_READ_DEFAULT_GROUP, "odbc");
  82     if (!mysql_real_connect(&mysql, charstar(_host), charstar(_user),
  83                             charstar(_passwd), charstar(_database),
  84                             0, NULL, 0))
  85         return error.set(mysql_error(&mysql));
  86
  87     valid = true;
  88     return false;
  89 }
  90
  91 void
  92 Connection::close()
  93 {
  94     mysql_close(&mysql);
  95 }
  96
  97 /* namespace MySQL */ }