Drizzled Public API Documentation

catalog.cc
00001 /* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
00002  *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
00003  *
00004  *  Copyright (C) 2010 Brian Aker
00005  *
00006  *  This program is free software; you can redistribute it and/or modify
00007  *  it under the terms of the GNU General Public License as published by
00008  *  the Free Software Foundation; either version 2 of the License, or
00009  *  (at your option) any later version.
00010  *
00011  *  This program is distributed in the hope that it will be useful,
00012  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  *  GNU General Public License for more details.
00015  *
00016  *  You should have received a copy of the GNU General Public License
00017  *  along with this program; if not, write to the Free Software
00018  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
00019  */
00020 
00021 #include <config.h>
00022 
00023 #include <assert.h>
00024 
00025 #include <drizzled/identifier.h>
00026 #include <drizzled/session.h>
00027 #include <drizzled/internal/my_sys.h>
00028 
00029 #include <drizzled/util/tablename_to_filename.h>
00030 #include <drizzled/util/backtrace.h>
00031 
00032 #include <algorithm>
00033 #include <sstream>
00034 #include <cstdio>
00035 
00036 #include <boost/algorithm/string/compare.hpp>
00037 
00038 using namespace std;
00039 
00040 namespace drizzled
00041 {
00042 
00043 namespace identifier
00044 {
00045 
00046 static void build_schema_filename(string &path, const string &name_arg)
00047 {
00048   path.append("../");
00049   bool conversion_error= false;
00050 
00051   conversion_error= util::tablename_to_filename(name_arg, path);
00052   if (conversion_error)
00053   {
00054     errmsg_printf(error::ERROR,
00055                   _("Catalog name cannot be encoded and fit within filesystem "
00056                     "name length restrictions."));
00057   }
00058 }
00059 
00060 Catalog::Catalog(const std::string &name_arg) :
00061   _name(name_arg)
00062 { 
00063   init();
00064 }
00065 
00066 Catalog::Catalog(const drizzled::LEX_STRING &name_arg) :
00067   _name(name_arg.str, name_arg.length)
00068 {
00069   init();
00070 }
00071 
00072 void  Catalog::init()
00073 { 
00074   assert(not _name.empty());
00075 
00076   build_schema_filename(path, _name);
00077   assert(path.length()); // TODO throw exception, this is a possibility
00078 
00079   util::insensitive_hash hasher;
00080   hash_value= hasher(path);
00081 }
00082 
00083 const std::string &Catalog::getPath() const
00084 {
00085   return path;
00086 }
00087 
00088 bool Catalog::compare(const std::string &arg) const
00089 {
00090   return boost::iequals(arg, _name);
00091 }
00092 
00093 bool Catalog::isValid() const
00094 {
00095   if (_name.empty())
00096     return false;
00097 
00098   if (_name.size() > NAME_LEN)
00099     return false;
00100 
00101   if (_name.at(_name.length() -1) == ' ')
00102     return false;
00103 
00104   const CHARSET_INFO * const cs= &my_charset_utf8mb4_general_ci;
00105 
00106   int well_formed_error;
00107   uint32_t res= cs->cset->well_formed_len(cs, _name.c_str(), _name.c_str() + _name.length(),
00108                                           NAME_CHAR_LEN, &well_formed_error);
00109 
00110   if (well_formed_error)
00111   {
00112     my_error(ER_INVALID_CHARACTER_STRING, MYF(0), "identifier", _name.c_str());
00113     return false;
00114   }
00115 
00116   if (_name.length() != res)
00117     return false;
00118 
00119   return true;
00120 }
00121 
00122 std::size_t hash_value(Catalog const& b)
00123 {
00124   return b.getHashValue();
00125 }
00126 
00127 void Catalog::getSQLPath(std::string &sql_path) const
00128 {
00129   sql_path= _name;
00130 }
00131 
00132 
00133 
00134 } /* namespace identifier */
00135 } /* namespace drizzled */