WSJT-X/models/FoxLog.cpp
Bill Somerville b8e4517718 Improve performance of Fox and contest log view windows
This include inverting  the order of table view rows  so the newest is
at the top, without that the Qt MVC interactions when using a database
table based model is too slow and complex to manage.

The table views  now have sort by column capability  in the normal way
(click column  header to  reverse sort order)  for timely  logging and
non-disruption  of  Tx  starts  the  log  view  should  be  sorted  in
descending time order and scrolled to the last row added. Without that
Fox and  contest logging will work  but serious delays may  be invoked
that disrupt operation.
2018-12-06 05:41:16 +00:00

145 lines
4.1 KiB
C++

#include "FoxLog.hpp"
#include <stdexcept>
#include <utility>
#include <QString>
#include <QDateTime>
#include <QSqlDatabase>
#include <QSqlTableModel>
#include <QSqlRecord>
#include <QSqlError>
#include <QSqlQuery>
#include <QDebug>
#include "qt_db_helpers.hpp"
#include "pimpl_impl.hpp"
class FoxLog::impl final
: public QSqlTableModel
{
public:
impl ();
QSqlQuery mutable dupe_query_;
};
FoxLog::impl::impl ()
{
if (!database ().tables ().contains ("fox_log"))
{
QSqlQuery query;
SQL_error_check (query, static_cast<bool (QSqlQuery::*) (QString const&)> (&QSqlQuery::exec),
"CREATE TABLE fox_log ("
" id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,"
" \"when\" DATETIME NOT NULL,"
" call VARCHAR(20) NOT NULL,"
" grid VARCHAR(4),"
" report_sent VARCHAR(3),"
" report_rcvd VARCHAR(3),"
" band VARCHAR(6) NOT NULL,"
" CONSTRAINT no_dupes UNIQUE (call, band)"
")");
}
SQL_error_check (dupe_query_, &QSqlQuery::prepare,
"SELECT COUNT(*) FROM fox_log WHERE call = :call AND band = :band");
setEditStrategy (QSqlTableModel::OnFieldChange);
setTable ("fox_log");
setHeaderData (fieldIndex ("when"), Qt::Horizontal, tr ("Date & Time(UTC)"));
setHeaderData (fieldIndex ("call"), Qt::Horizontal, tr ("Call"));
setHeaderData (fieldIndex ("grid"), Qt::Horizontal, tr ("Grid"));
setHeaderData (fieldIndex ("report_sent"), Qt::Horizontal, tr ("Sent"));
setHeaderData (fieldIndex ("report_rcvd"), Qt::Horizontal, tr ("Rcvd"));
setHeaderData (fieldIndex ("band"), Qt::Horizontal, tr ("Band"));
// This descending order by time is important, it makes the view
// place the latest row at the top, without this the model/view
// interactions are both sluggish and unhelpful.
setSort (fieldIndex ("when"), Qt::DescendingOrder);
SQL_error_check (*this, &QSqlTableModel::select);
}
FoxLog::FoxLog ()
{
}
FoxLog::~FoxLog ()
{
}
QSqlTableModel * FoxLog::model ()
{
return &*m_;
}
namespace
{
void set_value_maybe_null (QSqlRecord& record, QString const& name, QString const& value)
{
if (value.size ())
{
record.setValue (name, value);
}
else
{
record.setNull (name);
}
}
}
bool FoxLog::add_QSO (QDateTime const& when, QString const& call, QString const& grid
, QString const& report_sent, QString const& report_received
, QString const& band)
{
auto record = m_->record ();
if (!when.isNull ())
{
record.setValue ("when", when.toMSecsSinceEpoch () / 1000);
}
else
{
record.setNull ("when");
}
set_value_maybe_null (record, "call", call);
set_value_maybe_null (record, "grid", grid);
set_value_maybe_null (record, "report_sent", report_sent);
set_value_maybe_null (record, "report_rcvd", report_received);
set_value_maybe_null (record, "band", band);
if (m_->isDirty ())
{
m_->revert (); // discard any uncommitted changes
}
m_->setEditStrategy (QSqlTableModel::OnManualSubmit);
ConditionalTransaction transaction {*m_};
auto ok = m_->insertRecord (-1, record);
if (ok)
{
ok = transaction.submit (false);
}
m_->setEditStrategy (QSqlTableModel::OnFieldChange);
return ok;
}
bool FoxLog::dupe (QString const& call, QString const& band) const
{
m_->dupe_query_.bindValue (":call", call);
m_->dupe_query_.bindValue (":band", band);
SQL_error_check (m_->dupe_query_, static_cast<bool (QSqlQuery::*) ()> (&QSqlQuery::exec));
m_->dupe_query_.next ();
return m_->dupe_query_.value (0).toInt ();
}
void FoxLog::reset ()
{
if (m_->rowCount ())
{
m_->setEditStrategy (QSqlTableModel::OnManualSubmit);
ConditionalTransaction transaction {*m_};
SQL_error_check (*m_, &QSqlTableModel::removeRows, 0, m_->rowCount (), QModelIndex {});
transaction.submit ();
m_->select (); // to refresh views
m_->setEditStrategy (QSqlTableModel::OnFieldChange);
}
}