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Patch level : 2.2

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Files correlati     :
Ricompilazione Demo : [ ]
Commento            :
Migliorata ed elegantita gestione cache delle unita' di misura


git-svn-id: svn://10.65.10.50/trunk@13425 c028cbd2-c16b-5b4b-a496-9718f37d4682
This commit is contained in:
guy 2005-10-17 10:10:18 +00:00
parent 2dedf5f983
commit 18cb466b6b
1 changed files with 40 additions and 18 deletions
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58
db/dblib.cpp
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@ -13,31 +13,53 @@
#include "../mg/rmovmag.h"
#include "../include/rdoc.h"
///////////////////////////////////////////////////////////
// Cache fattori di conversione
///////////////////////////////////////////////////////////
class TConversionCache : public TCache
{
TLocalisamfile _umart;
private:
virtual TObject* key2obj(const char* key);
public:
TConversionCache();
};
TObject* TConversionCache::key2obj(const char* key)
{
TToken_string str = key;
_umart.put(UMART_CODART, str.get(0));
_umart.put(UMART_UM, str.get());
_umart.setkey(2);
real num;
if (_umart.read() == NOERR)
num = _umart.get_real(UMART_FC);
else
num = UNO; // Should never happen
return new fraction(num, UNO);
}
TConversionCache::TConversionCache()
: _umart(LF_UMART)
{ }
///////////////////////////////////////////////////////////
// TQuantita'
///////////////////////////////////////////////////////////
const fraction& TQuantita::get_factor(const TCodice_um& um) const
{
static TAssoc_array factors;
static TConversionCache* factors = NULL;
if (factors == NULL)
factors = new TConversionCache;
TString80 code;
code << _articolo << '|' << (um.empty() ? _um : um);
fraction* conv = (fraction*)factors.objptr(code);
if (conv == NULL)
{
TLocalisamfile umart(LF_UMART);
umart.setkey(2);
umart.put(UMART_CODART, _articolo);
umart.put(UMART_UM, um.empty() ? _um : um);
if (umart.read() == NOERR)
conv = new fraction(umart.get_real(UMART_FC), UNO);
else
conv = new fraction(1,1);
factors.add(code, conv);
}
code << _articolo << '|' << (um.blank() ? _um : um);
const fraction* conv = (const fraction*)factors->objptr(code);
return *conv;
}
@ -91,7 +113,7 @@ void TQuantita::convert(real& val, const TCodice_um& from_um, const TCodice_um&
{
const fraction& mul = get_factor(from_um);
const fraction& div = get_factor(to_um);
val = fraction(val, UNO) * mul / div;
val = mul / div * fraction(val, UNO);
TArticolo::round_um(val, to_um);
}
}