move counter cache to a separate class

fix references to get_article_tags

1 files changed, 228 insertions, 0 deletions

diff --git a/classes/ccache.php b/classes/ccache.php
new file mode 100644
index 000000000..4efb96d97
--- /dev/null
+++ b/classes/ccache.php
@@ -0,0 +1,228 @@
+<?php
+class CCache {
+	/* function ccache_zero($feed_id, $owner_uid) {
+		db_query("UPDATE ttrss_counters_cache SET
+			value = 0, updated = NOW() WHERE
+			feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
+	} */
+
+	static function zero_all($owner_uid) {
+		db_query("UPDATE ttrss_counters_cache SET
+			value = 0 WHERE owner_uid = '$owner_uid'");
+
+		db_query("UPDATE ttrss_cat_counters_cache SET
+			value = 0 WHERE owner_uid = '$owner_uid'");
+	}
+
+	static function remove($feed_id, $owner_uid, $is_cat = false) {
+
+		if (!$is_cat) {
+			$table = "ttrss_counters_cache";
+		} else {
+			$table = "ttrss_cat_counters_cache";
+		}
+
+		db_query("DELETE FROM $table WHERE
+			feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
+
+	}
+
+	static function update_all($owner_uid) {
+
+		if (get_pref('ENABLE_FEED_CATS', $owner_uid)) {
+
+			$result = db_query("SELECT feed_id FROM ttrss_cat_counters_cache
+				WHERE feed_id > 0 AND owner_uid = '$owner_uid'");
+
+			while ($line = db_fetch_assoc($result)) {
+				CCache::update($line["feed_id"], $owner_uid, true);
+			}
+
+			/* We have to manually include category 0 */
+
+			CCache::update(0, $owner_uid, true);
+
+		} else {
+			$result = db_query("SELECT feed_id FROM ttrss_counters_cache
+				WHERE feed_id > 0 AND owner_uid = '$owner_uid'");
+
+			while ($line = db_fetch_assoc($result)) {
+				print CCache::update($line["feed_id"], $owner_uid);
+
+			}
+
+		}
+	}
+
+	static function find($feed_id, $owner_uid, $is_cat = false,
+						 $no_update = false) {
+
+		if (!is_numeric($feed_id)) return;
+
+		if (!$is_cat) {
+			$table = "ttrss_counters_cache";
+			/* if ($feed_id > 0) {
+				$tmp_result = db_query("SELECT owner_uid FROM ttrss_feeds
+					WHERE id = '$feed_id'");
+				$owner_uid = db_fetch_result($tmp_result, 0, "owner_uid");
+			} */
+		} else {
+			$table = "ttrss_cat_counters_cache";
+		}
+
+		if (DB_TYPE == "pgsql") {
+			$date_qpart = "updated > NOW() - INTERVAL '15 minutes'";
+		} else if (DB_TYPE == "mysql") {
+			$date_qpart = "updated > DATE_SUB(NOW(), INTERVAL 15 MINUTE)";
+		}
+
+		$result = db_query("SELECT value FROM $table
+			WHERE owner_uid = '$owner_uid' AND feed_id = '$feed_id'
+			LIMIT 1");
+
+		if (db_num_rows($result) == 1) {
+			return db_fetch_result($result, 0, "value");
+		} else {
+			if ($no_update) {
+				return -1;
+			} else {
+				return CCache::update($feed_id, $owner_uid, $is_cat);
+			}
+		}
+
+	}
+
+	static function update($feed_id, $owner_uid, $is_cat = false,
+						   $update_pcat = true, $pcat_fast = false) {
+
+		if (!is_numeric($feed_id)) return;
+
+		/* if (!$is_cat && $feed_id > 0) {
+			$tmp_result = db_query("SELECT owner_uid FROM ttrss_feeds
+				WHERE id = '$feed_id'");
+			$owner_uid = db_fetch_result($tmp_result, 0, "owner_uid");
+		} */
+
+		$prev_unread = CCache::find($feed_id, $owner_uid, $is_cat, true);
+
+		/* When updating a label, all we need to do is recalculate feed counters
+		 * because labels are not cached */
+
+		if ($feed_id < 0) {
+			CCache::update_all($owner_uid);
+			return;
+		}
+
+		if (!$is_cat) {
+			$table = "ttrss_counters_cache";
+		} else {
+			$table = "ttrss_cat_counters_cache";
+		}
+
+		if ($is_cat && $feed_id >= 0) {
+			if ($feed_id != 0) {
+				$cat_qpart = "cat_id = '$feed_id'";
+			} else {
+				$cat_qpart = "cat_id IS NULL";
+			}
+
+			/* Recalculate counters for child feeds */
+
+			if (!$pcat_fast) {
+				$result = db_query("SELECT id FROM ttrss_feeds
+						WHERE owner_uid = '$owner_uid' AND $cat_qpart");
+
+				while ($line = db_fetch_assoc($result)) {
+					CCache::update($line["id"], $owner_uid, false, false);
+				}
+			}
+
+			$result = db_query("SELECT SUM(value) AS sv
+				FROM ttrss_counters_cache, ttrss_feeds
+				WHERE id = feed_id AND $cat_qpart AND
+				ttrss_counters_cache.owner_uid = $owner_uid AND
+				ttrss_feeds.owner_uid = '$owner_uid'");
+
+			$unread = (int) db_fetch_result($result, 0, "sv");
+
+		} else {
+			$unread = (int) Feeds::getFeedArticles($feed_id, $is_cat, true, $owner_uid);
+		}
+
+		db_query("BEGIN");
+
+		$result = db_query("SELECT feed_id FROM $table
+			WHERE owner_uid = '$owner_uid' AND feed_id = '$feed_id' LIMIT 1");
+
+		if (db_num_rows($result) == 1) {
+			db_query("UPDATE $table SET
+				value = '$unread', updated = NOW() WHERE
+				feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
+
+		} else {
+			db_query("INSERT INTO $table
+				(feed_id, value, owner_uid, updated)
+				VALUES
+				($feed_id, $unread, $owner_uid, NOW())");
+		}
+
+		db_query("COMMIT");
+
+		if ($feed_id > 0 && $prev_unread != $unread) {
+
+			if (!$is_cat) {
+
+				/* Update parent category */
+
+				if ($update_pcat) {
+
+					$result = db_query("SELECT cat_id FROM ttrss_feeds
+						WHERE owner_uid = '$owner_uid' AND id = '$feed_id'");
+
+					$cat_id = (int) db_fetch_result($result, 0, "cat_id");
+
+					CCache::update($cat_id, $owner_uid, true, true, true);
+
+				}
+			}
+		} else if ($feed_id < 0) {
+			CCache::update_all($owner_uid);
+		}
+
+		return $unread;
+	}
+
+	/* function ccache_cleanup($owner_uid) {
+
+		if (DB_TYPE == "pgsql") {
+			db_query("DELETE FROM ttrss_counters_cache AS c1 WHERE
+				(SELECT count(*) FROM ttrss_counters_cache AS c2
+					WHERE c1.feed_id = c2.feed_id AND c2.owner_uid = c1.owner_uid) > 1
+					AND owner_uid = '$owner_uid'");
+
+			db_query("DELETE FROM ttrss_cat_counters_cache AS c1 WHERE
+				(SELECT count(*) FROM ttrss_cat_counters_cache AS c2
+					WHERE c1.feed_id = c2.feed_id AND c2.owner_uid = c1.owner_uid) > 1
+					AND owner_uid = '$owner_uid'");
+		} else {
+			db_query("DELETE c1 FROM
+					ttrss_counters_cache AS c1,
+					ttrss_counters_cache AS c2
+				WHERE
+					c1.owner_uid = '$owner_uid' AND
+					c1.owner_uid = c2.owner_uid AND
+					c1.feed_id = c2.feed_id");
+
+			db_query("DELETE c1 FROM
+					ttrss_cat_counters_cache AS c1,
+					ttrss_cat_counters_cache AS c2
+				WHERE
+					c1.owner_uid = '$owner_uid' AND
+					c1.owner_uid = c2.owner_uid AND
+					c1.feed_id = c2.feed_id");
+
+		}
+	} */
+
+
+}
\ No newline at end of file