$reserve{'constrainttypea'} = ( $res->{'constrainttype'} eq 'a' );
$reserve{'constrainttypeo'} = ( $res->{'constrainttype'} eq 'o' );
$reserve{'voldesc'} = $res->{'volumeddesc'};
$reserve{'ccode'} = $res->{'ccode'};
$reserve{'barcode'} = $res->{'barcode'};
$reserve{'priority'} = $res->{'priority'};
$reserve{'constrainttypea'} = ( $res->{'constrainttype'} eq 'a' );
$reserve{'constrainttypeo'} = ( $res->{'constrainttype'} eq 'o' );
$reserve{'voldesc'} = $res->{'volumeddesc'};
$reserve{'ccode'} = $res->{'ccode'};
$reserve{'barcode'} = $res->{'barcode'};
$reserve{'priority'} = $res->{'priority'};