X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=lib%2Fnoticestream.php;h=01c5ee4a72e56e970aec2db641f26daf63b3300d;hb=42545c662560e15e29cf620f6ed4f5e2c75b5647;hp=2b6e10f7b92c59d8581eddc4395a552833a3d99f;hpb=0b35ce7c370bbb6cb9d55bb2a4256f58cb1158f1;p=quix0rs-gnu-social.git

diff --git a/lib/noticestream.php b/lib/noticestream.php
index 2b6e10f7b9..01c5ee4a72 100644
--- a/lib/noticestream.php
+++ b/lib/noticestream.php
@@ -4,7 +4,7 @@
  * Copyright (C) 2011, StatusNet, Inc.
  *
  * A stream of notices
- * 
+ *
  * PHP version 5
  *
  * This program is free software: you can redistribute it and/or modify
@@ -44,146 +44,34 @@ if (!defined('STATUSNET')) {
  * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
  * @link      http://status.net/
  */
-
-class NoticeStream
+abstract class NoticeStream
 {
-    public $generator = null;
-    public $args      = null;
-    public $cachekey  = null;
-
-    function __construct($generator, $args, $cachekey)
-    {
-        $this->generator = $generator;
-        $this->args      = $args;
-        $this->cachekey  = $cachekey;
-    }
-
-    function getNotices($offset=0, $limit=20, $sinceId=0, $maxId=0)
-    {
-        $ids = $this->getNoticeIds($offset, $limit, $sinceId, $maxId);
-
-        $notices = $this->getStreamByIds($ids);
-
-        return $notices;
-    }
+    protected $selectVerbs   = null;    // must be set to array
+    protected $unselectVerbs = null;    // must be set to array
 
-    function getNoticeIds($offset=0, $limit=20, $sinceId=0, $maxId=0)
+    public function __construct()
     {
-        $cache = Cache::instance();
-
-        // We cache NOTICE_CACHE_WINDOW elements at the tip of the stream.
-        // If the cache won't be hit, just generate directly.
-
-        if (empty($cache) ||
-            $sinceId != 0 || $maxId != 0 ||
-            is_null($limit) ||
-            ($offset + $limit) > NOTICE_CACHE_WINDOW) {
-            return $this->generate($offset, $limit, $sinceId, $maxId);
+        if ($this->selectVerbs === null) {
+            $this->selectVerbs = array(ActivityVerb::POST, ActivityUtils::resolveUri(ActivityVerb::POST, true));
         }
-
-        // Check the cache to see if we have the stream.
-
-        $idkey = Cache::key($this->cachekey);
-
-        $idstr = $cache->get($idkey);
-
-        if ($idstr !== false) {
-            // Cache hit! Woohoo!
-            $window = explode(',', $idstr);
-            $ids = array_slice($window, $offset, $limit);
-            return $ids;
-        }
-
-        // Check the cache to see if we have a "last-known-good" version.
-        // The actual cache gets blown away when new notices are added, but
-        // the "last" value holds a lot of info. We might need to only generate
-        // a few at the "tip", which can bound our queries and save lots
-        // of time.
-
-        $laststr = $cache->get($idkey.';last');
-
-        if ($laststr !== false) {
-            $window = explode(',', $laststr);
-            $last_id = $window[0];
-            $new_ids = $this->generate(0, NOTICE_CACHE_WINDOW, $last_id, 0);
-
-            $new_window = array_merge($new_ids, $window);
-
-            $new_windowstr = implode(',', $new_window);
-
-            $result = $cache->set($idkey, $new_windowstr);
-            $result = $cache->set($idkey . ';last', $new_windowstr);
-
-            $ids = array_slice($new_window, $offset, $limit);
-
-            return $ids;
+        if ($this->unselectVerbs === null) {
+            $this->unselectVerbs = array(ActivityVerb::DELETE);
         }
-
-        // No cache hits :( Generate directly and stick the results
-        // into the cache. Note we generate the full cache window.
-
-        $window = $this->generate(0, NOTICE_CACHE_WINDOW, 0, 0);
-
-        $windowstr = implode(',', $window);
-
-        $result = $cache->set($idkey, $windowstr);
-        $result = $cache->set($idkey . ';last', $windowstr);
-
-        // Return just the slice that was requested
-
-        $ids = array_slice($window, $offset, $limit);
-
-        return $ids;
     }
 
-    function getStreamByIds($ids)
-    {
-        $cache = Cache::instance();
-
-        if (!empty($cache)) {
-            $notices = array();
-            foreach ($ids as $id) {
-                $n = Notice::staticGet('id', $id);
-                if (!empty($n)) {
-                    $notices[] = $n;
-                }
-            }
-            return new ArrayWrapper($notices);
-        } else {
-            $notice = new Notice();
-            if (empty($ids)) {
-                //if no IDs requested, just return the notice object
-                return $notice;
-            }
-            $notice->whereAdd('id in (' . implode(', ', $ids) . ')');
-
-            $notice->find();
-
-            $temp = array();
-
-            while ($notice->fetch()) {
-                $temp[$notice->id] = clone($notice);
-            }
+    abstract function getNoticeIds($offset, $limit, $since_id, $max_id);
 
-            $wrapped = array();
+    function getNotices($offset, $limit, $sinceId = null, $maxId = null)
+    {
+        $ids = $this->getNoticeIds($offset, $limit, $sinceId, $maxId);
 
-            foreach ($ids as $id) {
-                if (array_key_exists($id, $temp)) {
-                    $wrapped[] = $temp[$id];
-                }
-            }
+        $notices = self::getStreamByIds($ids);
 
-            return new ArrayWrapper($wrapped);
-        }
+        return $notices;
     }
 
-    function generate($offset, $limit, $sinceId, $maxId)
+    static function getStreamByIds($ids)
     {
-        $args = array_merge($this->args, array($offset,
-                                               $limit,
-                                               $sinceId,
-                                               $maxId));
-
-        return call_user_func_array($this->generator, $args);
+    	return Notice::multiGet('id', $ids);
     }
 }