Data::Stream::Bulk::Callback - Callback based bulk iterator

    Data::Stream::Bulk::Callback->new(
        callback => sub {
            if ( @more_items = get_some() ) {
                return \@more_items;
            } else {
                return; # done
            }
        },
    }

This class provides a callback based implementation of Data::Stream::Bulk.

The subroutine that is called when more items are needed.

Should return an array reference for the next block, or a false value if there is nothing left.

See Data::Stream::Bulk::DoneFlag.

Reinvokes callback.

Yuval Kogman <nothingmuch@woobling.org>

This software is copyright (c) 2010 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.