Data::Stream::Bulk::DoneFlag − Implement the "is_done" method in terms of a flag
version 0.11
package Data::Stream::Bulk::Blah; use Moose; with qw(Data::Stream::Bulk::DoneFlag); sub get_more { if ( my @more = more() ) { return \@more; } else { return; } }
This role implements the "Data::Stream::Bulk" core API in terms of one method ("get_more").
As a convenience it calls "finished" when the stream is exhausted, so that cleanup may be done.
This is used by classes like Data::Stream::Bulk::DBI, Data::Stream::Bulk::Callback.
is_done
Returns the state of the iterator.
next
As long as the iterator is not yet done, calls "get_more".
If "get_more" returned a false value instead of an array reference then "done" is set, "finished" is called, and this "next" does nothing on subsequent calls.
finished
A noop by default. Can be overridden if so desired.
get_more
Returns the next block of data as an array ref, or a false value if no items are left.
Yuval Kogman <nothingmuch AT woobling DOT org>
This software is copyright (c) 2012 by Yuval Kogman.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.