Exemplos de rtree_find_first em C++ (Cpp)

Exemplo n.º 1

Arquivo: rt_index.c Projeto: Belxjander/Asuna

int rtree_find_next(MI_INFO *info, uint keynr, uint search_flag)
{
  my_off_t root;
  uint nod_cmp_flag;
  MI_KEYDEF *keyinfo = info->s->keyinfo + keynr;
  /*
    At the moment index can only properly handle the
    MBR_INTERSECT, so we use it for all sorts of queries.
    TODO: better searsh for CONTAINS/WITHIN.
  */
  search_flag= nod_cmp_flag= MBR_INTERSECT;

  if (info->update & HA_STATE_DELETED)
    return rtree_find_first(info, keynr, info->lastkey, info->lastkey_length,
			    search_flag);

  if (!info->buff_used)
  {
    uchar *key= info->int_keypos;

    while (key < info->int_maxpos)
    {
      if (!rtree_key_cmp(keyinfo->seg, info->first_mbr_key, key, 
                         info->last_rkey_length, search_flag))
      {
        uchar *after_key = key + keyinfo->keylength;

        info->lastpos= _mi_dpos(info, 0, after_key);
        memcpy(info->lastkey, key, info->lastkey_length);

        if (after_key < info->int_maxpos)
	  info->int_keypos= after_key;
        else
	  info->buff_used= 1;
        return 0;
      }
      key+= keyinfo->keylength;
    }
  }
  if ((root = info->s->state.key_root[keynr]) == HA_OFFSET_ERROR)
  {
    my_errno= HA_ERR_END_OF_FILE;
    return -1;
  }
  
  /*
    TODO better search for CONTAINS/WITHIN.
    nod_cmp_flag= (((search_flag & (MBR_EQUAL | MBR_WITHIN)) ?
                    MBR_WITHIN : MBR_INTERSECT));
  */
  return rtree_find_req(info, keyinfo, search_flag, nod_cmp_flag, root, 0);
}

Exemplo n.º 2

Arquivo: rt_index.c Projeto: Abner-Sun/linux_mysql5.1_mini_pathChange

int rtree_find_next(MI_INFO *info, uint keynr, uint search_flag)
{
  my_off_t root;
  uint nod_cmp_flag;
  MI_KEYDEF *keyinfo = info->s->keyinfo + keynr;

  if (info->update & HA_STATE_DELETED)
    return rtree_find_first(info, keynr, info->lastkey, info->lastkey_length,
			    search_flag);

  if (!info->buff_used)
  {
    uchar *key= info->int_keypos;

    while (key < info->int_maxpos)
    {
      if (!rtree_key_cmp(keyinfo->seg, info->first_mbr_key, key, 
                         info->last_rkey_length, search_flag))
      {
        uchar *after_key = key + keyinfo->keylength;

        info->lastpos= _mi_dpos(info, 0, after_key);
        memcpy(info->lastkey, key, info->lastkey_length);

        if (after_key < info->int_maxpos)
	  info->int_keypos= after_key;
        else
	  info->buff_used= 1;
        return 0;
      }
      key+= keyinfo->keylength;
    }
  }
  if ((root = info->s->state.key_root[keynr]) == HA_OFFSET_ERROR)
  {
    my_errno= HA_ERR_END_OF_FILE;
    return -1;
  }
  
  nod_cmp_flag = ((search_flag & (MBR_EQUAL | MBR_WITHIN)) ? 
        MBR_WITHIN : MBR_INTERSECT);
  return rtree_find_req(info, keyinfo, search_flag, nod_cmp_flag, root, 0);
}