+package RecordLinks;
+
+use SL::Common;
+use SL::DBUtils;
+
+sub create_links {
+ $main::lxdebug->enter_sub();
+
+ my $self = shift;
+ my %params = @_;
+
+ Common::check_params(\%params, qw(links));
+
+ if (!scalar @{ $params{links} }) {
+ $main::lxdebug->leave_sub();
+ return;
+ }
+
+ my $myconfig = \%main::myconfig;
+ my $form = $main::form;
+
+ my $dbh = $params{dbh} || $form->get_standard_dbh($myconfig);
+
+ my $query = qq|INSERT INTO record_links (from_table, from_id, to_table, to_id) VALUES (?, ?, ?, ?)|;
+ my $sth = prepare_query($form, $dbh, $query);
+
+ foreach my $link (@{ $params{links} }) {
+ next if ('HASH' ne ref $link);
+ next if (!$link->{from_table} || !$link->{from_id} || !$link->{to_table} || !$link->{to_id});
+
+ do_statement($form, $sth, $query, $link->{from_table}, conv_i($link->{from_id}), $link->{to_table}, conv_i($link->{to_id}));
+ }
+
+ $dbh->commit() unless ($params{dbh});
+
+ $main::lxdebug->leave_sub();
+}
+
+sub get_links {
+ $main::lxdebug->enter_sub();
+
+ my $self = shift;
+ my %params = @_;
+
+ Common::check_params(\%params, [ qw(from_table from_id to_table to_id) ]);
+
+ my $myconfig = \%main::myconfig;
+ my $form = $main::form;
+
+ my $dbh = $params{dbh} || $form->get_standard_dbh($myconfig);
+
+ my @conditions = ();
+ my @values = ();
+
+ foreach my $col (qw(from_table from_id to_table to_id)) {
+ next unless ($params{$col});
+
+ if ('ARRAY' eq ref $params{$col}) {
+ push @conditions, "$col IN (" . join(', ', ('?') x scalar(@{ $params{$col} })) . ")";
+ push @values, $col =~ m/table/ ? @{ $params{$col} } : map { conv_i($_) } @{ $params{$col} };
+
+ } else {
+ push @conditions, "$col = ?";
+ push @values, $col =~ m/table/ ? $params{$col} : conv_i($params{$col});
+ }
+ }
+
+ my $query = qq|SELECT from_table, from_id, to_table, to_id
+ FROM record_links|;
+
+ if (scalar @conditions) {
+ $query .= qq| WHERE | . join(' AND ', map { "($_)" } @conditions);
+ }
+
+ my $links = selectall_hashref_query($form, $dbh, $query, @values);
+
+ $main::lxdebug->leave_sub();
+
+ return wantarray ? @{ $links } : $links;
+}
+
+1;