php - Google Glass Mirror Service: list timeline items and paging -

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i'm trying paginate timeline items can returned in mirror service (i'm using php quickstart example can found here )

from google_mirrorservice.php file, can read:

/**  * retrieves list of timeline items authenticated user.  * (timeline.list)  *  * @param array $optparams optional parameters.  *  * @opt_param string bundleid if provided, items given bundleid returned.  * @opt_param bool includedeleted if true, tombstone records deleted items returned.  * @opt_param string maxresults maximum number of items include in response, used paging.  * @opt_param string orderby controls order in timeline items returned.  * @opt_param string pagetoken token page of results return.  * @opt_param bool pinnedonly if true, pinned items returned.  * @opt_param string sourceitemid if provided, items given sourceitemid returned.  * @return google_timelinelistresponse  */ public function listtimeline($optparams = array()) {   $params = array();   $params = array_merge($params, $optparams);   $data = $this->__call('list', array($params));   if ($this->useobjects()) {     return new google_timelinelistresponse($data);   } else {     return $data;   } }

the params same can found here, more or less same description.

from description, understand maxresults 'page size', , pagetoken 'page number'. right first param, not second: seems ignored in request.

so, questions are:

1) pagetoken for?

2) how can paginate timeline items? e.g. getting results 10 19, instead 0 9 only.

the timeline.list endpoint doesn't support random access of timeline, support iterating on timeline items available result query. if specify maxresults, no more many results sent back. results sent include array of items , nextpagetoken attribute.

if need go next page of results, include pagetoken parameter set result of nextpagetoken attribute previous call.

see https://developers.google.com/glass/v1/reference/timeline/list example of doing paginated query.

update:

to clear (and answer question in comment), nextpagetoken should treated opaque - has no meaning except pass server next page.

similarly, there no previouspagetoken or other way set next bundle want is. in general, these more rare anyway. 1 doesn't need manually flip between pages of results on server - , google's server doesn't overwhelmed if there tons of results on query.


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