src/shared/Database/SQLStorageImpl.h

   1 /*
   2  * Copyright (C) 2005-2009 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 #include "ProgressBar.h"
  20 #include "Log.h"
  21 #include "dbcfile.h"
  22
  23 template<class T>
  24 template<class S, class D>
  25 void SQLStorageLoaderBase<T>::convert(uint32 field_pos, S src, D &dst)
  26 {
  27     dst = D(src);
  28 }
  29
  30 template<class T>
  31 void SQLStorageLoaderBase<T>::convert_str_to_str(uint32 field_pos, char *src, char *&dst)
  32 {
  33     if(!src)
  34     {
  35         dst = new char[1];
  36         *dst = 0;
  37     }
  38     else
  39     {
  40         uint32 l = strlen(src) + 1;
  41         dst = new char[l];
  42         memcpy(dst, src, l);
  43     }
  44 }
  45
  46 template<class T>
  47 template<class S>
  48 void SQLStorageLoaderBase<T>::convert_to_str(uint32 field_pos, S src, char * & dst)
  49 {
  50     dst = new char[1];
  51     *dst = 0;
  52 }
  53
  54 template<class T>
  55 template<class D>
  56 void SQLStorageLoaderBase<T>::convert_from_str(uint32 field_pos, char * src, D& dst)
  57 {
  58     dst = 0;
  59 }
  60
  61 template<class T>
  62 template<class V>
  63 void SQLStorageLoaderBase<T>::storeValue(V value, SQLStorage &store, char *p, int x, uint32 &offset)
  64 {
  65     T * subclass = (static_cast<T*>(this));
  66     switch(store.dst_format[x])
  67     {
  68         case FT_LOGIC:
  69             subclass->convert(x, value, *((bool*)(&p[offset])) );
  70             offset+=sizeof(bool);
  71             break;
  72         case FT_BYTE:
  73             subclass->convert(x, value, *((char*)(&p[offset])) );
  74             offset+=sizeof(char);
  75             break;
  76         case FT_INT:
  77             subclass->convert(x, value, *((uint32*)(&p[offset])) );
  78             offset+=sizeof(uint32);
  79             break;
  80         case FT_FLOAT:
  81             subclass->convert(x, value, *((float*)(&p[offset])) );
  82             offset+=sizeof(float);
  83             break;
  84         case FT_STRING:
  85             subclass->convert_to_str(x, value, *((char**)(&p[offset])) );
  86             offset+=sizeof(char*);
  87             break;
  88     }
  89 }
  90
  91 template<class T>
  92 void SQLStorageLoaderBase<T>::storeValue(char * value, SQLStorage &store, char *p, int x, uint32 &offset)
  93 {
  94     T * subclass = (static_cast<T*>(this));
  95     switch(store.dst_format[x])
  96     {
  97         case FT_LOGIC:
  98             subclass->convert_from_str(x, value, *((bool*)(&p[offset])) );
  99             offset+=sizeof(bool);
 100             break;
 101         case FT_BYTE:
 102             subclass->convert_from_str(x, value, *((char*)(&p[offset])) );
 103             offset+=sizeof(char);
 104             break;
 105         case FT_INT:
 106             subclass->convert_from_str(x, value, *((uint32*)(&p[offset])) );
 107             offset+=sizeof(uint32);
 108             break;
 109         case FT_FLOAT:
 110             subclass->convert_from_str(x, value, *((float*)(&p[offset])) );
 111             offset+=sizeof(float);
 112             break;
 113         case FT_STRING:
 114             subclass->convert_str_to_str(x, value, *((char**)(&p[offset])) );
 115             offset+=sizeof(char*);
 116             break;
 117     }
 118 }
 119
 120 template<class T>
 121 void SQLStorageLoaderBase<T>::Load(SQLStorage &store)
 122 {
 123     uint32 maxi;
 124     Field *fields;
 125     QueryResult *result  = WorldDatabase.PQuery("SELECT MAX(%s) FROM %s", store.entry_field, store.table);
 126     if(!result)
 127     {
 128         sLog.outError("Error loading %s table (not exist?)\n", store.table);
 129         exit(1);                                            // Stop server at loading non exited table or not accessable table
 130     }
 131
 132     maxi = (*result)[0].GetUInt32()+1;
 133     delete result;
 134
 135     result = WorldDatabase.PQuery("SELECT COUNT(*) FROM %s", store.table);
 136     if(result)
 137     {
 138         fields = result->Fetch();
 139         store.RecordCount = fields[0].GetUInt32();
 140         delete result;
 141     }
 142     else
 143         store.RecordCount = 0;
 144
 145     result = WorldDatabase.PQuery("SELECT * FROM %s", store.table);
 146
 147     if(!result)
 148     {
 149         sLog.outError("%s table is empty!\n", store.table);
 150         store.RecordCount = 0;
 151         return;
 152     }
 153
 154     uint32 recordsize = 0;
 155     uint32 offset = 0;
 156
 157     if(store.iNumFields != result->GetFieldCount())
 158     {
 159         store.RecordCount = 0;
 160         sLog.outError("Error in %s table, probably sql file format was updated (there should be %d fields in sql).\n", store.table, store.iNumFields);
 161         delete result;
 162         exit(1);                                            // Stop server at loading broken or non-compatible table.
 163     }
 164
 165     //get struct size
 166     uint32 sc=0;
 167     uint32 bo=0;
 168     uint32 bb=0;
 169     for(uint32 x=0; x< store.iNumFields; x++)
 170         if(store.dst_format[x]==FT_STRING)
 171             ++sc;
 172         else if (store.dst_format[x]==FT_LOGIC)
 173             ++bo;
 174         else if (store.dst_format[x]==FT_BYTE)
 175             ++bb;
 176     recordsize=(store.iNumFields-sc-bo-bb)*4+sc*sizeof(char*)+bo*sizeof(bool)+bb*sizeof(char);
 177
 178     char** newIndex=new char*[maxi];
 179     memset(newIndex,0,maxi*sizeof(char*));
 180
 181     char * _data= new char[store.RecordCount *recordsize];
 182     uint32 count=0;
 183     barGoLink bar( store.RecordCount );
 184     do
 185     {
 186         fields = result->Fetch();
 187         bar.step();
 188         char *p=(char*)&_data[recordsize*count];
 189         newIndex[fields[0].GetUInt32()]=p;
 190
 191         offset=0;
 192         for(uint32 x = 0; x < store.iNumFields; x++)
 193             switch(store.src_format[x])
 194             {
 195                 case FT_LOGIC:
 196                     storeValue((bool)(fields[x].GetUInt32() > 0), store, p, x, offset); break;
 197                 case FT_BYTE:
 198                     storeValue((char)fields[x].GetUInt8(), store, p, x, offset); break;
 199                 case FT_INT:
 200                     storeValue((uint32)fields[x].GetUInt32(), store, p, x, offset); break;
 201                 case FT_FLOAT:
 202                     storeValue((float)fields[x].GetFloat(), store, p, x, offset); break;
 203                 case FT_STRING:
 204                     storeValue((char*)fields[x].GetString(), store, p, x, offset); break;
 205             }
 206         ++count;
 207     }while( result->NextRow() );
 208
 209     delete result;
 210
 211     store.pIndex = newIndex;
 212     store.MaxEntry = maxi;
 213     store.data = _data;
 214 }