Avu metadata, uploaded to iRODS, does not have 'units' field when it is set to '0' or empty string

[marcomoscasgr]

After uploading avu metadata to iRODS with 'units' set to '0' or empty string, the 'units' field is not found by get_avu function from the iRODS API. The value of units is evaluated to false in the following code parts, skipping the 'units' key creation:

perl-irods-wrap/lib/WTSI/NPG/iRODS/BatonClient.pm

Lines 821 to 830 in 3f4d0ef

	my $spec = {operation => 'metamod',
	arguments => $args,
	target => {collection => $collection,
	avus => [{attribute => $attribute,
	value => $value}]}};
	if ($units) {
	$spec->{target}->{avus}->[0]->{units} = $units;
	}

perl-irods-wrap/lib/WTSI/NPG/iRODS/BatonClient.pm

Lines 858 to 868 in 3f4d0ef

	my $spec = {operation => 'metamod',
	arguments => $args,
	target => {collection => $collection,
	data_object => $data_name,
	avus => [{attribute => $attribute,
	value => $value}]}};
	if ($units) {
	$spec->{target}->{avus}->[0]->{units} = $units;
	}