+ ###
+ # parse refnum (advertising source)
+ ###
+
+ if ( exists($params->{'refnum'}) ) {
+ my @refnum;
+ if (ref $params->{'refnum'}) {
+ @refnum = @{ $params->{'refnum'} };
+ } else {
+ @refnum = ( $params->{'refnum'} );
+ }
+ my $in = join(',', grep /^\d+$/, @refnum);
+ push @where, "refnum IN($in)" if length $in;
+ }
+