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Don't fetch more than needed if exhausted

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This commit is contained in:
Evan Prodromou 2012-03-21 12:21:36 -04:00
parent 0238aa9d19
commit 9b0279c2d5
1 changed files with 8 additions and 2 deletions
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10
lib/filteringnoticestream.php
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@ -70,9 +70,11 @@ abstract class FilteringNoticeStream extends NoticeStream
// or we get nothing from upstream.
$results = null;
$round = 0;
do {
common_debug(get_class($this) . ": ($offset, $limit) fetching $askFor notices starting at $startAt");
common_debug(get_class($this) . ": ($offset, $limit) Round $round: fetching $askFor notices starting at $startAt");
$raw = $this->upstream->getNotices($startAt, $askFor, $sinceId, $maxId);
@ -101,13 +103,17 @@ abstract class FilteringNoticeStream extends NoticeStream
$hits = count($filtered);
$lastAsk = $askFor;
if ($hits === 0) {
$askFor = max(min(2 * $askFor, NOTICES_PER_PAGE * 50), NOTICES_PER_PAGE);
} else {
$askFor = max(min((($total - $hits)*$startAt)/$hits, NOTICES_PER_PAGE * 50), NOTICES_PER_PAGE);
}
} while (count($filtered) < $total && $results !== 0);
common_debug(get_class($this) . ": ($offset, $limit) Round $round hits is $hits, results = $results.");
} while (count($filtered) < $total && $results >= $lastAsk);
return new ArrayWrapper(array_slice($filtered, $offset, $limit));
}