void guaranteeRange(int rowIndex)
{
if (!dataByRowIndex.contains(rowIndex))
{
int pageStart = (rowIndex / pageSize) * pageSize;
qDebug() << "Fetching " << pageSize << " items starting from " << pageStart;
static const QString stmt(
"\nSELECT"
"\n Events.*,"
"\n PhoneNumbers.LineIdentification AS PhoneNumberIDRepresentation"
"\nFROM"
"\n Events"
""
"\n LEFT JOIN"
"\n PhoneNumbers"
"\n ON"
"\n PhoneNumbers.ID = Events.PhoneNumberID"
"\n%1"
"\nORDER BY"
"\n Events.TimeStamp DESC"
"\nLIMIT :pageSize"
"\nOFFSET :pageStart");
QString whereClause;
Database::SqlParameters params;
makeWhereClause(&whereClause, ¶ms);
QString selectStmt = stmt.arg(whereClause);
params.insert(":pageSize", pageSize);
params.insert(":pageStart", pageStart);
QScopedPointer< SqlCursor > cursor(db->select(selectStmt, params));
QStringList columns = cursor->columns();
for (int i = 0; cursor->next(); i++)
{
QHash< QString, QVariant > record;
for (int j = 0; j < columns.size(); j++)
record.insert(columns[j], cursor->value(columns[j]));
dataByRowIndex.insert(pageStart + i, record);
oidToRowIndex.insert(record.value("ID").toInt(), pageStart + i);
}
}
}
bool PhoneNumbersTableModel::contains(const QString& lineIdentification)
{
static QString stmt(
"SELECT ID FROM PhoneNumbers WHERE LineIdentification = :lineIdentificaiton");
Database::SqlParameters params;
params.insert(QLatin1String(":lineIdentification"), lineIdentification);
QScopedPointer< SqlCursor > cursor(d->db->select(stmt, params));
return cursor->next();
}
int PhoneNumbersTableModel::getIdByLineIdentification(const QString& lineIdentification)
{
qDebug();
int id = -1;
static QString selectStatement(
"SELECT ID FROM PhoneNumbers WHERE LineIdentification = :lineIdentification");
Database::SqlParameters params;
params.insert(QLatin1String(":lineIdentification"), lineIdentification);
QScopedPointer< SqlCursor > cursor(d->db->select(selectStatement, params));
// TODO: process errors when selecting from DB
if (cursor.isNull())
{
qCritical() << QLatin1String(": unable to retrieve PhoneNumbers.ID for ") <<
lineIdentification;
}
// phone number was already contacted
else if (cursor->next())
{
id = cursor->value(QLatin1String("ID")).toInt();
}
// no data found - insert new row into PhoneNumbers and return its id
else
{
static QString insertStatement(
"INSERT INTO PhoneNumbers(LineIdentification) VALUES(:lineIdentification)");
Database::SqlParameters params;
params.insert(":lineIdentification", lineIdentification);
id = d->db->insert(insertStatement, params);
}
return id;
}