src/shared/Database/QueryResult.h

   1 /*
   2  * Copyright (C) 2005-2010 MaNGOS <http://getmangos.com/>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19 #if !defined(QUERYRESULT_H)
  20 #define QUERYRESULT_H
  21
  22 class MANGOS_DLL_SPEC QueryResult
  23 {
  24     public:
  25         QueryResult(uint64 rowCount, uint32 fieldCount)
  26             : mFieldCount(fieldCount), mRowCount(rowCount) {}
  27
  28         virtual ~QueryResult() {}
  29
  30         virtual bool NextRow() = 0;
  31
  32         Field *Fetch() const { return mCurrentRow; }
  33
  34         const Field & operator [] (int index) const { return mCurrentRow[index]; }
  35
  36         uint32 GetFieldCount() const { return mFieldCount; }
  37         uint64 GetRowCount() const { return mRowCount; }
  38
  39     protected:
  40         Field *mCurrentRow;
  41         uint32 mFieldCount;
  42         uint64 mRowCount;
  43 };
  44
  45 typedef std::vector<std::string> QueryFieldNames;
  46
  47 class MANGOS_DLL_SPEC QueryNamedResult
  48 {
  49     public:
  50         explicit QueryNamedResult(QueryResult* query, QueryFieldNames const& names) : mQuery(query), mFieldNames(names) {}
  51         ~QueryNamedResult() { delete mQuery; }
  52
  53         // compatible interface with QueryResult
  54         bool NextRow() { return mQuery->NextRow(); }
  55         Field *Fetch() const { return mQuery->Fetch(); }
  56         uint32 GetFieldCount() const { return mQuery->GetFieldCount(); }
  57         uint64 GetRowCount() const { return mQuery->GetRowCount(); }
  58         Field const& operator[] (int index) const { return (*mQuery)[index]; }
  59
  60         // named access
  61         Field const& operator[] (const std::string &name) const { return mQuery->Fetch()[GetField_idx(name)]; }
  62         QueryFieldNames const& GetFieldNames() const { return mFieldNames; }
  63
  64         uint32 GetField_idx(const std::string &name) const
  65         {
  66             for(size_t idx = 0; idx < mFieldNames.size(); ++idx)
  67             {
  68                 if(mFieldNames[idx] == name)
  69                     return idx;
  70             }
  71             ASSERT(false && "unknown field name");
  72             return uint32(-1);
  73         }
  74
  75     protected:
  76         QueryResult *mQuery;
  77         QueryFieldNames mFieldNames;
  78 };
  79
  80 #endif