77 lines
1.2 KiB
C++
77 lines
1.2 KiB
C++
|
#ifndef _DATABASE_TO_MEM_CACHE_HPP_
|
||
|
|
#define _DATABASE_TO_MEM_CACHE_HPP_
|
||
|
|
|
||
|
|
#include <glob/GlobMem.h>
|
||
|
|
|
||
|
|
template <class T,typename S> class DB2Mem
|
||
|
|
{
|
||
|
|
private:
|
||
|
|
long* p_size;
|
||
|
|
S* p_ptr;
|
||
|
|
public:
|
||
|
|
DB2Mem(const string& tableName)
|
||
|
|
{
|
||
|
|
char* ptr = (char*)GlobMem::GetInstancePtr()->GetTablePtr(tableName);
|
||
|
|
if(ptr == NULL)
|
||
|
|
{
|
||
|
|
p_ptr = NULL;
|
||
|
|
p_size = NULL;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
p_size = (long*)ptr;
|
||
|
|
p_ptr = (S*)(ptr + sizeof(long));
|
||
|
|
}
|
||
|
|
~DB2Mem()
|
||
|
|
{
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
public:
|
||
|
|
|
||
|
|
S* operator()(void)
|
||
|
|
{
|
||
|
|
return p_ptr;
|
||
|
|
};
|
||
|
|
|
||
|
|
S* operator[](int i)
|
||
|
|
{
|
||
|
|
if(p_ptr == NULL) return NULL;
|
||
|
|
return p_ptr+i;
|
||
|
|
};
|
||
|
|
|
||
|
|
long count(void)
|
||
|
|
{
|
||
|
|
if(p_size == NULL)return 0;
|
||
|
|
return *p_size;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/* Read DB Table Data to memory */
|
||
|
|
int readDB(char* dbwhere = NULL,char* order = NULL)
|
||
|
|
{
|
||
|
|
if( p_ptr == NULL ) {
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
*p_size = 0;
|
||
|
|
|
||
|
|
T tb;
|
||
|
|
char* dbMsg = tb.openSetDB(dbwhere,order);
|
||
|
|
if( dbMsg != NULL)
|
||
|
|
{
|
||
|
|
tb.closeSetDB();
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
while( ( dbMsg = tb.getSetDB()) == NULL )
|
||
|
|
{
|
||
|
|
tb.fillStructure();
|
||
|
|
memcpy(p_ptr+*p_size,&tb.structTable,sizeof(S));
|
||
|
|
*p_size = *p_size+1;
|
||
|
|
}
|
||
|
|
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif
|