-sub get_balance_starting_date {
-
- # determine date from which the balance is calculated. The method is
- # configured in the client configuration.
-
- my $asofdate = shift;
- return unless $asofdate;
-
- $asofdate = $::locale->parse_date_to_object(\%::myconfig, $asofdate);
-
- my $form = $main::form;
- my $dbh = $::form->get_standard_dbh;
-
- my $startdate_method = $::instance_conf->get_balance_startdate_method;
-
- # We could use the following objects to determine the starting date for
- # calculating the balance from asofdate (the reference date for the balance):
- # * start_of_year - 1.1., no deviating fiscal year supported
- # * closed_to - all transactions since the books were last closed
- # * last_ob - all transactions since last opening balance transaction (usually 1.1.)
- # * mindate - all transactions in database
-
- my $start_of_year = $asofdate->clone();
- $start_of_year->set_day(1);
- $start_of_year->set_month(1);
-
- # closedto assumes that we only close the books at the end of a fiscal year,
- # never during the fiscal year. If this assumption is valid closedto should
- # also work for deviating fiscal years. But as the trial balance (SuSa)
- # doesn't yet deal with deviating fiscal years, and is useful to also close
- # the books after a month has been exported via DATEV, so this method of
- # determining the starting date isn't recommended and has been removed as
- # default.
- my ($closedto) = selectfirst_array_query($form, $dbh, 'SELECT closedto FROM defaults');
- if ($closedto) {
- $closedto = $::locale->parse_date_to_object(\%::myconfig, $closedto);
- $closedto->subtract(years => 1) while ($asofdate - $closedto)->is_negative;
- $closedto->add(days => 1);
- };
-
- my ($query, $startdate, $last_ob, $mindate);
- $query = qq|select max(transdate) from acc_trans where ob_transaction is true and transdate <= ?|;
- ($last_ob) = selectrow_query($::form, $dbh, $query, $::locale->format_date(\%::myconfig, $asofdate));
- $last_ob = $::locale->parse_date_to_object(\%::myconfig, $last_ob) if $last_ob;
-
- $query = qq|select min(transdate) from acc_trans|;
- ($mindate) = selectrow_query($::form, $dbh, $query);
- $mindate = $::locale->parse_date_to_object(\%::myconfig, $mindate);
-
- # the default method is to use all transactions ($mindate)
-
- if ( $startdate_method eq 'closed_to' and $closedto ) {
- # if no closedto is configured use default
- return $::locale->format_date(\%::myconfig, $closedto);
-
- } elsif ( $startdate_method eq 'start_of_year' ) {
-
- return $::locale->format_date(\%::myconfig, $start_of_year);
-
- } elsif ( $startdate_method eq 'all_transactions' ) {
-
- return $::locale->format_date(\%::myconfig, $mindate);
-
- } elsif ( $startdate_method eq 'last_ob_or_all_transactions' and $last_ob ) {
- # use default if there are no ob transactions
-
- return $::locale->format_date(\%::myconfig, $last_ob);
-
- } elsif ( $startdate_method eq 'last_ob_or_start_of_year' ) {
-
- if ( $last_ob ) {
- return $::locale->format_date(\%::myconfig, $last_ob);
- } else {
- return $::locale->format_date(\%::myconfig, $start_of_year);
- };
-
- } else {
- # default action, also used for closedto and last_ob_or_all_transactions if
- # there are no valid dates
-
- return $::locale->format_date(\%::myconfig, $mindate);
- };
-
-};
-