add_new_cvterm

my $pub_cv= $schema->resultset('Cv::Cv')->find_or_create( 
	{ name = 'publication' } );
    my ($journal_cvterm) = $schema->resultset('Cv::Cv')->find(
	{ name  => 'journal',
	  cv_id => $pub_cv->cv_id()
	} ) ;
    if (!$journal_cvterm) {
	my $pub_db= $schema->resultset('General::Db')->find_or_create( 
	    { name = 'null' } );
	my $pub_dbxref= $schema->resultset('General::Dbxref')->find_or_create( 
	    { name => 'null',
	      db_id => $pub_db->db_id(),
	    } );
	$journal_cvterm = $schema->resultset('Cv::Cvterm')->create(
	    { name      => 'journal' ,
	      cv_id     => $pub_cv->cv_id(),
	      dbxref_id => $pub_dbxref->dbxref_id()
	    });
    }