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Manual Reference Pages  -  DATA::STREAM::BULK::DONEFLAG (3)

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NAME

Data::Stream::Bulk::DoneFlag - Implement the "is_done" method in terms of a flag

CONTENTS

VERSION

version 0.11

SYNOPSIS



        package Data::Stream::Bulk::Blah;
        use Moose;

        with qw(Data::Stream::Bulk::DoneFlag);

        sub get_more {
                if ( my @more = more() ) {
                        return \@more;
                } else {
                        return;
                }
        }



DESCRIPTION

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.

METHODS

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.

REQUIRED_METHODS

get_more Returns the next block of data as an array ref, or a false value if no items are left.

AUTHOR

Yuval Kogman <nothingmuch@woobling.org>

COPYRIGHT AND LICENSE

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.

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perl v5.20.3 DATA::STREAM::BULK::DONEFLAG (3) 2012-02-14

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