I would simply use whatever Moose allows as getters and setters and use the setter to store the filehandle:

sub openHandler {
    open my $fh, '<', $filename or die "$filename: $!";
    $self->set_filehandle($fh);
};

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In reply to Re^5: Moose reading file line by line by Corion
in thread Moose reading big file line by line by learning.moose

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