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[6827] Added an interface for defining custom SQLStorage loaders.

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This commit is contained in:
Wyk3d 2008-11-15 20:30:06 +02:00
parent b195eb87a9
commit 074bd3a08f
8 changed files with 294 additions and 136 deletions
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214
src/shared/Database/SQLStorageImpl.h Normal file
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/*
* Copyright (C) 2005-2008 MaNGOS <http://getmangos.com/>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "ProgressBar.h"
#include "Log.h"
#include "dbcfile.h"
template<class T>
template<class S, class D>
void SQLStorageLoaderBase<T>::convert(uint32 field_pos, S src, D &dst)
{
dst = D(src);
}
template<class T>
void SQLStorageLoaderBase<T>::convert_str_to_str(uint32 field_pos, char *src, char *&dst)
{
if(!src)
{
dst = new char[1];
*dst = 0;
}
else
{
uint32 l = strlen(src) + 1;
dst = new char[l];
memcpy(dst, src, l);
}
}
template<class T>
template<class S>
void SQLStorageLoaderBase<T>::convert_to_str(uint32 field_pos, S src, char * & dst)
{
dst = new char[1];
*dst = 0;
}
template<class T>
template<class D>
void SQLStorageLoaderBase<T>::convert_from_str(uint32 field_pos, char * src, D& dst)
{
dst = 0;
}
template<class T>
template<class V>
void SQLStorageLoaderBase<T>::storeValue(V value, SQLStorage &store, char *p, int x, uint32 &offset)
{
T * subclass = (static_cast<T*>(this));
switch(store.dst_format[x])
{
case FT_LOGIC:
subclass->convert(x, value, *((bool*)(&p[offset])) );
offset+=sizeof(bool);
break;
case FT_BYTE:
subclass->convert(x, value, *((char*)(&p[offset])) );
offset+=sizeof(char);
break;
case FT_INT:
subclass->convert(x, value, *((uint32*)(&p[offset])) );
offset+=sizeof(uint32);
break;
case FT_FLOAT:
subclass->convert(x, value, *((float*)(&p[offset])) );
offset+=sizeof(float);
break;
case FT_STRING:
subclass->convert_to_str(x, value, *((char**)(&p[offset])) );
offset+=sizeof(char*);
break;
}
}
template<class T>
void SQLStorageLoaderBase<T>::storeValue(char * value, SQLStorage &store, char *p, int x, uint32 &offset)
{
T * subclass = (static_cast<T*>(this));
switch(store.dst_format[x])
{
case FT_LOGIC:
subclass->convert_from_str(x, value, *((bool*)(&p[offset])) );
offset+=sizeof(bool);
break;
case FT_BYTE:
subclass->convert_from_str(x, value, *((char*)(&p[offset])) );
offset+=sizeof(char);
break;
case FT_INT:
subclass->convert_from_str(x, value, *((uint32*)(&p[offset])) );
offset+=sizeof(uint32);
break;
case FT_FLOAT:
subclass->convert_from_str(x, value, *((float*)(&p[offset])) );
offset+=sizeof(float);
break;
case FT_STRING:
subclass->convert_str_to_str(x, value, *((char**)(&p[offset])) );
offset+=sizeof(char*);
break;
}
}
template<class T>
void SQLStorageLoaderBase<T>::Load(SQLStorage &store)
{
uint32 maxi;
Field *fields;
QueryResult *result = WorldDatabase.PQuery("SELECT MAX(%s) FROM %s", store.entry_field, store.table);
if(!result)
{
sLog.outError("Error loading %s table (not exist?)\n", store.table);
exit(1); // Stop server at loading non exited table or not accessable table
}
maxi = (*result)[0].GetUInt32()+1;
delete result;
result = WorldDatabase.PQuery("SELECT COUNT(*) FROM %s", store.table);
if(result)
{
fields = result->Fetch();
store.RecordCount = fields[0].GetUInt32();
delete result;
}
else
store.RecordCount = 0;
result = WorldDatabase.PQuery("SELECT * FROM %s", store.table);
if(!result)
{
sLog.outError("%s table is empty!\n", store.table);
store.RecordCount = 0;
return;
}
uint32 recordsize = 0;
uint32 offset = 0;
if(store.iNumFields != result->GetFieldCount())
{
store.RecordCount = 0;
sLog.outError("Error in %s table, probably sql file format was updated (there should be %d fields in sql).\n", store.table, store.iNumFields);
delete result;
exit(1); // Stop server at loading broken or non-compatible table.
}
//get struct size
uint32 sc=0;
uint32 bo=0;
uint32 bb=0;
for(uint32 x=0; x< store.iNumFields; x++)
if(store.dst_format[x]==FT_STRING)
++sc;
else if (store.dst_format[x]==FT_LOGIC)
++bo;
else if (store.dst_format[x]==FT_BYTE)
++bb;
recordsize=(store.iNumFields-sc-bo-bb)*4+sc*sizeof(char*)+bo*sizeof(bool)+bb*sizeof(char);
char** newIndex=new char*[maxi];
memset(newIndex,0,maxi*sizeof(char*));
char * _data= new char[store.RecordCount *recordsize];
uint32 count=0;
barGoLink bar( store.RecordCount );
do
{
fields = result->Fetch();
bar.step();
char *p=(char*)&_data[recordsize*count];
newIndex[fields[0].GetUInt32()]=p;
offset=0;
for(uint32 x = 0; x < store.iNumFields; x++)
switch(store.src_format[x])
{
case FT_LOGIC:
storeValue((bool)(fields[x].GetUInt32() > 0), store, p, x, offset); break;
case FT_BYTE:
storeValue((char)fields[x].GetUInt8(), store, p, x, offset); break;
case FT_INT:
storeValue((uint32)fields[x].GetUInt32(), store, p, x, offset); break;
case FT_FLOAT:
storeValue((float)fields[x].GetFloat(), store, p, x, offset); break;
case FT_STRING:
storeValue((char*)fields[x].GetString(), store, p, x, offset); break;
}
++count;
}while( result->NextRow() );
delete result;
store.pIndex = newIndex;
store.MaxEntry = maxi;
store.data = _data;
}