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Derivazione di TRecarray da TObject con TAssoc_array contenuto all'interno.

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Modifiche in preparazione alla classe TRWcache


git-svn-id: svn://10.65.10.50/trunk@5280 c028cbd2-c16b-5b4b-a496-9718f37d4682
This commit is contained in:
augusto 1997-09-26 10:18:05 +00:00
parent 2840b79430
commit 027467de50
2 changed files with 56 additions and 24 deletions
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52
include/recarray.cpp
View File

@ -448,7 +448,7 @@ void TFile_cache::test_firm()
if (cur_firm != _last_firm)
{
_last_firm = cur_firm;
destroy();
_cache.destroy();
}
}
}
@ -457,11 +457,11 @@ const TObject& TFile_cache::query(const char* code)
{
test_firm();
_error = NOERR;
_code = code;
TObject* obj = objptr(_code);
TObject* obj = _cache.objptr(_code);
if (obj == NULL)
{
int err = ~NOERR;
TRectype& curr = _file->curr();
if (_code.not_empty())
{
@ -475,20 +475,34 @@ const TObject& TFile_cache::query(const char* code)
if (val)
curr.put(rf.Name, val);
else
NFCHECK("Valore del campo chiave %s non specificato per il decoder", rf.Name);
NFCHECK("Valore del campo chiave %s non specificato per la cache", rf.Name);
}
_file->setkey(_key);
err = _file->read();
_error = _file->read();
} else
_error = _iskeyerr;
switch (_error)
{
case NOERR:
break;
case _iskeynotfound:
case _iseof:
case _isemptyfile:
default:
curr.zero();
}
if (err != NOERR)
curr.zero();
obj = rec2obj(curr);
add(_code, obj);
_cache.add(_code, obj);
}
return *obj;
}
int TFile_cache::io_result()
{
return _error;
}
int TFile_cache::fill()
{
test_firm();
@ -509,12 +523,19 @@ int TFile_cache::fill()
_code.add(val);
}
TObject* obj = rec2obj(curr);
add(_code, obj);
_cache.add(_code, obj);
}
return items();
return _cache.items();
}
TLocalisamfile & TFile_cache::file()
{
if (!_file)
init_file();
return *_file;
}
///////////////////////////////////////////////////////////
// TDecoder
///////////////////////////////////////////////////////////
@ -563,15 +584,14 @@ TObject* TRecord_cache::rec2obj(const TRectype& curr) const
return new TRectype(curr);
}
const TString& TRecord_cache::get(const char* key, const char* field)
{
const TRectype& rec = (const TRectype&)query(key);
return rec.get(field);
}
const TRectype& TRecord_cache::get(const char* key)
{
const TRectype& rec = (const TRectype&)query(key);
return rec;
}
const TString& TRecord_cache::get(const char* key, const char* field)
{
return get(key).get(field);
}

28
include/recarray.h
View File

@ -142,24 +142,34 @@ public:
// TFile_cache
///////////////////////////////////////////////////////////
class TFile_cache : private TAssoc_array
class TFile_cache : public TObject
{
TToken_string _code;
TLocalisamfile* _file;
int _key;
long _last_firm;
int _error;
private:
protected:
TAssoc_array _cache;
protected:
void init_file();
void test_firm();
protected:
const TObject& query(const char* chiave);
virtual TObject* rec2obj(const TRectype& rec) const pure;
TLocalisamfile & file();
public:
int io_result();
const int key_number() const
{return _key;}
long items()
{return _cache.items();}
int fill();
TFile_cache(int num, int key = 1);
TFile_cache(const char* table, int key = 1);
virtual ~TFile_cache();
@ -170,7 +180,7 @@ class TDecoder : public TFile_cache
TString16 _outf;
protected:
TObject* rec2obj(const TRectype& rec) const;
virtual TObject* rec2obj(const TRectype& rec) const;
public:
const TString& decode(const char* code);
@ -184,11 +194,13 @@ public:
class TRecord_cache : public TFile_cache
{
protected:
TObject* rec2obj(const TRectype& rec) const;
virtual TObject* rec2obj(const TRectype& rec) const;
public:
// @cmember ritorna il campo (chiama get(chiave))
const TString& get(const char* chiave, const char* campo);
const TRectype& get(const char* chiave);
// @cmember ritorna il record con una determinata chiave
virtual const TRectype& get(const char* chiave);
TRecord_cache(int num, int key = 1);
TRecord_cache(const char* table, int key = 1);