Marc Mims > Net-Twitter-3.17001 > Net::Twitter::Role::AutoCursor

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Source   Latest Release: Net-Twitter-4.01005

NAME ^

Net::Twitter::Role::AutoCursor

SYNOPSIS ^

  use Net::Twitter;
  my $nt = Net::Twitter->new(
      traits => [qw/AutoCursor API::REST RetryOnError OAuth/],
      # additional ags...
  );

  # Get friends_ids or followers_ids without worrying about cursors
  my $ids = $nt->followers_ids;

  my $nt = Net::Twitter->new(
      traits => [
          qw/API::REST RetryOnError OAuth/
          AutoCursor => { max_calls => 32 },
          AutoCursor => {
              max_calls      => 4,
              force_cursor   => 1,
              array_accessor => 'users',
              methods        => [qw/friends followers/],
          },
      ],
      # additional args
  );

  # works with any Twitter call that takes a cursor parameter
  my $friends = $nt->friends;

DESCRIPTION ^

On 25-Mar-2011, Twitter announced a change to friends_ids and followers_ids API methods:

  [Soon] followers/ids and friends/ids is being updated to set the cursor to -1
  if it isn't supplied during the request. This changes the default response
  format

This will break a lot of existing code. The AutoCursor trait was created to help users transition to cursor based access for these methods.

With default parameters, the AutoCursor trait attempts a non-cursored call for friends_ids and followers_ids. If it detects a cursored response from Twitter, it continues to call the underlying Twitter API method, with the next cursor, until it has received all results or 16 calls have been made (yielding 80,000 results). It returns an ARRAY reference to the combined results.

If the cursor parameter is passed to friends_ids or followers_ids, Net::Twitter uses cursored access from the start, i.e., it does not attempt an initial non-cursored call.

The AutoCursor trait is parameterized, allowing it to work with any Twitter API method that expects cursors, returning combined results for up to the maximum number of calls specified.

AutoCursor can be applied multiple times to handle different sets of API methods.

PARAMETERS ^

max_calls

An integer specifying the maximum number of API calls to make. Default is 16.

max_calls can be overridden on a per-call basis by passing a max_calls argument to the API method.

force_cursor

If true, when the caller does not provide a cursor parameter, AutoCursor will add one with value -1. Default is 0.

array_accessor

The name of the HASH key used to access the ARRAY ref of results in the data structure returned by Twitter. Default is ids.

methods

A reference to an ARRAY containing the names of Twitter API methods to which AutoCursor will be applied.

AUTHOR ^

Marc Mims <marc@questright.com>

COPYRIGHT ^

Copyright (c) 2011 Marc Mims

LICENSE ^

This library is free software and may be distributed under the same terms as perl itself.

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