- function stream($user_id, $offset, $limit, $since_id, $max_id, $own=false)
- {
- $inbox = Inbox::staticGet('user_id', $user_id);
-
- if (empty($inbox)) {
- $inbox = Inbox::fromNoticeInbox($user_id);
- if (empty($inbox)) {
- return array();
- } else {
- $inbox->encache();
- }
- }
-
- $ids = $inbox->unpack();
-
- if (!empty($since_id)) {
- $newids = array();
- foreach ($ids as $id) {
- if ($id > $since_id) {
- $newids[] = $id;
- }
- }
- $ids = $newids;
- }
-
- if (!empty($max_id)) {
- $newids = array();
- foreach ($ids as $id) {
- if ($id <= $max_id) {
- $newids[] = $id;
- }
- }
- $ids = $newids;
- }
-
- $ids = array_slice($ids, $offset, $limit);
-
- return $ids;
- }
-
- /**
- * Wrapper for Inbox::stream() and Notice::getStreamByIds() returning
- * additional items up to the limit if we were short due to deleted
- * notices still being listed in the inbox.
- *
- * The fast path (when no items are deleted) should be just as fast; the
- * offset parameter is applied *before* lookups for maximum efficiency.
- *
- * This means offset-based paging may show duplicates, but similar behavior
- * already exists when new notices are posted between page views, so we
- * think people will be ok with this until id-based paging is introduced
- * to the user interface.
- *
- * @param int $user_id
- * @param int $offset skip past the most recent N notices (after since_id checks)
- * @param int $limit
- * @param mixed $since_id return only notices after but not including this id
- * @param mixed $max_id return only notices up to and including this id
- * @param mixed $own ignored?
- * @return array of Notice objects
- *
- * @todo consider repacking the inbox when this happens?
- * @fixme reimplement $own if we need it?
- */
- function streamNotices($user_id, $offset, $limit, $since_id, $max_id, $own=false)
- {
- $ids = self::stream($user_id, $offset, self::MAX_NOTICES, $since_id, $max_id, $own);
-
- // Do a bulk lookup for the first $limit items
- // Fast path when nothing's deleted.
- $firstChunk = array_slice($ids, 0, $limit);
- $notices = Notice::getStreamByIds($firstChunk);
-
- $wanted = count($firstChunk); // raw entry count in the inbox up to our $limit
- if ($notices->N >= $wanted) {
- return $notices;
- }
-
- // There were deleted notices, we'll need to look for more.
- assert($notices instanceof ArrayWrapper);
- $items = $notices->_items;
- $remainder = array_slice($ids, $limit);
-
- while (count($items) < $wanted && count($remainder) > 0) {
- $notice = Notice::staticGet(array_shift($remainder));
- if ($notice) {
- $items[] = $notice;
- } else {
- }
- }
- return new ArrayWrapper($items);
- }
-