Thanks Igor for your prompt response.
Since the call to the sqlite3_step function is inside the mySQLite3::read_*
class-function/method, I call the read_* method from Runner::read_tblName()
for each datum I need to retrieve. Now, in a while loop inside
Runner::read_tblName() I could call the mySQLite3::read_* for the data to be
retrieved, but instead of reading the next row of data, it keeps on reading
the same row again and again. Furthermore, I have no way to let
Runner::read_tblName 'know' that there is no more data, hence stopping the
while loop.
Obviously my problem is in design, but I don't have enough experience using
SQLite3 to come up with a better idea.
My question is, really, how do you, C++ programmers, have resolved this
issue? There must be a solution.
void Runner::read_tblName() {
.
sql_statement = "SELECT * FROM name";
//while(there is more data){
// I have no-way to report to this method that there is no more data in the
bank
// I could add a flag to the mySQLite3 class and have the while loop check
on its status,
// or a signal that would be trigger by the ending of the while loop.
db->setStmt(sql_statement);
int pos = 0;
data1 = db->read_int(pos);
db->setStmt(sql_statement);
pos = 1;
data2 = db->read_str(pos);
data3 = db->read_str(++pos);
data4 = db->read_str(++pos);
data5 = db->read_str(++pos);
Glib::ustring str;
str = apstr.format(data1);
str += " ";
str += data2;
str += ". ";
str += data3;
str += " ";
str += data4;
str += " ";
str += data5;
apex->setException(str, FILE, METHOD, LINE);
apex->Display();
// } <<<---
}
const int mySQLite3::read_int(int pos)
throw(somexception) {
rc = sqlite3_prepare_v2(db, SQLStatement.c_str(), -1, &mystmt, NULL);
if(rc != SQLITE_OK) {
try {
this->display(rc, FILE, METHOD, LINE);
} catch(somexception e) {
throw e;
}
} else {
counter++;
}
rc = sqlite3_step(mystmt);
if(rc == SQLITE_ROW ) {
apint = sqlite3_column_int(mystmt,pos);
}
try {
this->finalize();
} catch(somexception& e) {
throw e;
}
return apint;
}
const Glib::ustring& mySQLite3::read_str(const int pos)
throw(somexception) {
//if(pos == 0) {
rc = sqlite3_prepare_v2(db, this->SQLStatement.c_str(), -1, &mystmt,
NULL);
//}
if(rc != SQLITE_OK) {
try {
this->display(rc, FILE, METHOD, LINE);
} catch(somexception e) {
throw e;
}
} else {
counter++;
}
rc = sqlite3_step(mystmt);
if(rc == SQLITE_ROW ) {
apstr = (const char*)sqlite3_column_text(mystmt,pos);
}
try {
this->finalize();
} catch(somexception& e) {
throw e;
}
return apstr;
}
_______________________________________________
sqlite-users mailing list
[email protected]
http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
