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Modifiche alla write_rewrite

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git-svn-id: svn://10.65.10.50/trunk@5070 c028cbd2-c16b-5b4b-a496-9718f37d4682
This commit is contained in:
alex 1997-08-18 16:03:20 +00:00
parent 7be232bb33
commit d4dbe18c39
2 changed files with 52 additions and 17 deletions

52
include/multirec.cpp

@ -87,16 +87,21 @@ int TMultiple_rectype::write_rewrite(TBaseisamfile & f, bool re) const
else
{
// write:
((TMultiple_rectype *)this)->renum_key();
TMultiple_rectype & myself = *(TMultiple_rectype *)this;
const bool to_complete = !myself.key_complete();
if (to_complete)
myself.renum();
myself.renum_key();
myself._nuovo |= to_complete;
if (_nuovo)
{
do
{
err = TRectype::write(f);
if (err == _isreinsert && ((TMultiple_rectype *)this)->renum())
((TMultiple_rectype *)this)->renum_key();
if (err == _isreinsert && myself.renum())
myself.renum_key();
} while (err == _isreinsert);
((TMultiple_rectype *)this)->_nuovo = (err != NOERR);
myself._nuovo = (err != NOERR);
}
else
{
@ -244,7 +249,34 @@ void TMultiple_rectype::synchronize_bodies()
}
}
// @mfunc Copia il multiple rectype r su quello corrente
TMultiple_rectype & TMultiple_rectype::copy(const TMultiple_rectype& r)
{
// copia..
TAuto_variable_rectype::operator=(r);
_files = r._files;
_nuovo=r._nuovo;
_nfiles=r._nfiles; // file delle righe
for (int i = _nfiles - 1; i >= 0; i--)
{
_logicnums[i] = r._logicnums[i];
_changed[i] = r._changed[i];
_autoload[i] = r._autoload[i];
}
_numfields=r._numfields;
return *this;
}
// @mfunc Copia il multiple rectype r su quello corrente
int TMultiple_rectype::loaded_rows(int logicnum) const
{
const int index = log2ind(logicnum);
TRecord_array * r = (TRecord_array *) ((TMultiple_rectype *) this)->_files.objptr(index);
if (_changed[index] || r == NULL)
return 0;
return r->rows();
}
int TMultiple_rectype::remove(TBaseisamfile & f) const
{
@ -319,17 +351,9 @@ TMultiple_rectype::TMultiple_rectype(const TRectype & rec)
// @mfunc costruttore di copia
TMultiple_rectype::TMultiple_rectype(const TMultiple_rectype& r)
:TAuto_variable_rectype(r), _files(r._files)
:TAuto_variable_rectype(r)
{
// copia..
_nuovo=r._nuovo;
_nfiles=r._nfiles; // file delle righe
for (int i = _nfiles - 1; i >= 0; i--)
{
_logicnums[i] = r._logicnums[i];
_changed[i] = r._changed[i];
_autoload[i] = r._autoload[i];
}
_numfields=r._numfields;
copy(r);
}

17
include/multirec.h

@ -39,8 +39,12 @@ class TMultiple_rectype : public TAuto_variable_rectype
protected:
const TArray & files() const { return _files;}
// @cmember Documento nuovo (non presente sul database).
bool nuovo() const { return _nuovo; }
// @cmember funzione per costruire la chiave delle righe
virtual void set_body_key(TRectype & rowrec);
// @cmember verifica se la chiave della testata e' completa
virtual bool key_complete() { return FALSE; }
// @cmember setta la chiave della testata ad un valore nuovo (next-key)
virtual bool renum() { return FALSE; }
// @cmember renumera le chiavi di tutti i corpi in base alla testata
@ -51,7 +55,7 @@ protected:
virtual void load_rows_file(int logicnum);
// @cmember Ritorna l'indice di <p _files> del numero logico passato
int log2ind(int logicnum) const;
// @cmember RIcerca la prima occorenza del corpo con fieldname uguale a s
// @cmember RIcerca la prima occorrenza del corpo con fieldname uguale a s
virtual int find(int logicnum, const char * fieldname, const char * s, int from = 0, bool reverse = FALSE) const ;
// @cmember Scrive/riscrive un corpo
virtual int write_rewrite(TBaseisamfile& f, bool re = FALSE) const;
@ -62,6 +66,12 @@ protected:
void add_file(int logicnum, const char * numfield);
// @cmember sincronizza tutti i body (li legge, se necessario) in seguito ad una lettura della testata
virtual void synchronize_bodies();
virtual TMultiple_rectype & copy(const TMultiple_rectype & r);
TObject* dup() const { return new TMultiple_rectype(*this); }
// @cmember restituisce il numero di record attualmente caricati nel corpo (da usare nella dirty fields)
int loaded_rows(int logicnum = 0) const;
public:
//***********************
// struttura
@ -77,9 +87,9 @@ public:
int rows(int logicnum = 0) const { return body(logicnum).rows(); }
// @cmember restituisce il record n-esimo del del corpo
virtual const TRecord_array & operator[](int logicnum) const { return (const TRecord_array &)((TMultiple_rectype *)this)->body(logicnum); }
const TRecord_array & operator[](int logicnum) const { return (const TRecord_array &)((TMultiple_rectype *)this)->body(logicnum); }
// @cmember restituisce il record n-esimo del del corpo
virtual TRecord_array & operator[](int logicnum) { return (TRecord_array &)body(logicnum); }
TRecord_array & operator[](int logicnum) { return (TRecord_array &)body(logicnum); }
// @cmember distrugge una riga del record array del corpo
bool destroy_row(int n, bool pack = FALSE, int logicnum = 0) { return body(logicnum).destroy_row(n, pack); }
@ -102,6 +112,7 @@ public:
virtual void set_fields(TAuto_variable_rectype & rec) {}
virtual void reset_fields(TAuto_variable_rectype & rec) { rec.remove_field(); }
virtual TMultiple_rectype & operator =(const TMultiple_rectype & r) { return copy(r);}
virtual TRectype & operator =(const TRectype & r);
virtual TRectype & operator =(const char * r);
virtual void zero(char c = '\0');