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Aggiunti metodi ai Trecord_array

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git-svn-id: svn://10.65.10.50/trunk@1249 c028cbd2-c16b-5b4b-a496-9718f37d4682
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guy 1995-04-14 12:14:16 +00:00
parent d87a2cfd29
commit 1f56500d97
1 changed files with 22 additions and 19 deletions
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41
include/relation.h
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@ -1,4 +1,4 @@
/* $Id: relation.h,v 1.13 1995-04-10 15:27:53 guy Exp $ */ /* $Id: relation.h,v 1.14 1995-04-14 12:14:16 guy Exp $ */
// join.h // join.h
// fv 12/8/93 // fv 12/8/93
// join class for isam files // join class for isam files
@ -148,31 +148,34 @@ public:
class TRecord_array : private TArray class TRecord_array : private TArray
{ {
int _file; int _file; // Numero logico del file principale
TString16 _num; TString16 _num; // Nome del campo col numero di riga
private: private:
int rec2row(const TRectype& r) const; int rec2row(const TRectype& r) const; // Estrae il numero riga di un record
const TRectype& key() const { return (const TRectype&)operator[](0); } const TRectype& key() const { return (const TRectype&)operator[](0); }
protected:
virtual bool destroy_row(int n);
public: public:
int rows() const { return items()-1; } int rows() const { return items()-1; } // Numero di righe presenti
int last_row() const { return last(); } int last_row() const { return last(); } // Ultima riga
const TRectype& row(int r) const const TRectype& row(int r) const // Ennesima riga costante
{ CHECKD(r > 0, "Bad record number ", r); return (TRectype&)operator[](r); } { CHECKD(r > 0, "Bad record number ", r); return (const TRectype&)operator[](r); }
virtual int add_row(const TRectype& r); TRectype& row(int r, bool create); // Ennesima riga
virtual bool destroy_row(const TRectype& r) { return destroy_row(rec2row(r)); }
void destroy_rows();
virtual bool read(const TRectype& r); virtual int add_row(const TRectype& r); // Aggiungi/cambia una riga
virtual bool write(bool re = FALSE); virtual bool destroy_row(int n, bool pack = FALSE); // Cancella una riga
virtual bool rewrite() { return write(TRUE); } virtual bool destroy_row(const TRectype& r, bool pack = FALSE) { return destroy_row(rec2row(r), pack); }
virtual bool remove(); void destroy_rows(); // Cancella tutte le righe
bool renum_key(const char* field, const TString& num);
bool renum_key(const char* field, long num); // Rinumera campo chiave in seguito a reinsert
virtual int read(const TRectype& r); // Leggi tutto l'array da file
virtual int write(bool re = FALSE); // Aggiorna il file
virtual int rewrite() { return write(TRUE); }
virtual int remove(); // Cancella tutti i record dal file
TRecord_array(const TRectype& r, const char* numfield); TRecord_array(const TRectype& r, const char* numfield);
TRecord_array(int logicnum, const char* numfield); TRecord_array(int logicnum, const char* numfield);
@ -268,7 +271,7 @@ public:
void save_status () { _if->save_status(); } void save_status () { _if->save_status(); }
void restore_status () { _if->restore_status(); } void restore_status () { _if->restore_status(); }
TCursor(TRelation* f, const char* filter = "", int key = 1, TRectype* from = NULL, TRectype* to = NULL); TCursor(TRelation* f, const char* filter = "", int key = 1, const TRectype* from = NULL, const TRectype* to = NULL);
virtual ~TCursor(); virtual ~TCursor();
}; };