Merge remote-tracking branch 'FreshRSS/master'

1 files changed, 733 insertions, 354 deletions

diff --git a/app/Models/EntryDAO.php b/app/Models/EntryDAO.php
index aaf4dcf6a..397471baa 100644
--- a/app/Models/EntryDAO.php
+++ b/app/Models/EntryDAO.php
@@ -1,453 +1,821 @@
 <?php
 
-class FreshRSS_EntryDAO extends Minz_ModelPdo {
-	public function addEntry ($valuesTmp) {
-		$sql = 'INSERT INTO `' . $this->prefix . 'entry`(id, guid, title, author, content_bin, link, date, is_read, is_favorite, id_feed, tags) '
-		     . 'VALUES(?, ?, ?, ?, COMPRESS(?), ?, ?, ?, ?, ?, ?)';
-		$stm = $this->bd->prepare ($sql);
-
-		$values = array (
-			$valuesTmp['id'],
-			substr($valuesTmp['guid'], 0, 760),
-			substr($valuesTmp['title'], 0, 255),
-			substr($valuesTmp['author'], 0, 255),
-			$valuesTmp['content'],
-			substr($valuesTmp['link'], 0, 1023),
-			$valuesTmp['date'],
-			$valuesTmp['is_read'] ? 1 : 0,
-			$valuesTmp['is_favorite'] ? 1 : 0,
-			$valuesTmp['id_feed'],
-			substr($valuesTmp['tags'], 0, 1023),
-		);
+class FreshRSS_EntryDAO extends Minz_ModelPdo implements FreshRSS_Searchable {
+
+	public function isCompressed() {
+		return parent::$sharedDbType === 'mysql';
+	}
+
+	public function hasNativeHex() {
+		return parent::$sharedDbType !== 'sqlite';
+	}
+
+	public function sqlHexDecode($x) {
+		return 'unhex(' . $x . ')';
+	}
+
+	public function sqlHexEncode($x) {
+		return 'hex(' . $x . ')';
+	}
+
+	protected function addColumn($name) {
+		Minz_Log::warning('FreshRSS_EntryDAO::addColumn: ' . $name);
+		$hasTransaction = false;
+		try {
+			$stm = null;
+			if ($name === 'lastSeen') {	//v1.1.1
+				if (!$this->bd->inTransaction()) {
+					$this->bd->beginTransaction();
+					$hasTransaction = true;
+				}
+				$stm = $this->bd->prepare('ALTER TABLE `' . $this->prefix . 'entry` ADD COLUMN `lastSeen` INT(11) DEFAULT 0');
+				if ($stm && $stm->execute()) {
+					$stm = $this->bd->prepare('CREATE INDEX entry_lastSeen_index ON `' . $this->prefix . 'entry`(`lastSeen`);');	//"IF NOT EXISTS" does not exist in MySQL 5.7
+					if ($stm && $stm->execute()) {
+						if ($hasTransaction) {
+							$this->bd->commit();
+						}
+						return true;
+					}
+				}
+				if ($hasTransaction) {
+					$this->bd->rollBack();
+				}
+			} elseif ($name === 'hash') {	//v1.1.1
+				$stm = $this->bd->prepare('ALTER TABLE `' . $this->prefix . 'entry` ADD COLUMN hash BINARY(16)');
+				return $stm && $stm->execute();
+			}
+		} catch (Exception $e) {
+			Minz_Log::error('FreshRSS_EntryDAO::addColumn error: ' . $e->getMessage());
+			if ($hasTransaction) {
+				$this->bd->rollBack();
+			}
+		}
+		return false;
+	}
+
+	private $triedUpdateToUtf8mb4 = false;
 
-		if ($stm && $stm->execute ($values)) {
+	protected function updateToUtf8mb4() {
+		if ($this->triedUpdateToUtf8mb4) {
+			return false;
+		}
+		$this->triedUpdateToUtf8mb4 = true;
+		$db = FreshRSS_Context::$system_conf->db;
+		if ($db['type'] === 'mysql') {
+			include_once(APP_PATH . '/SQL/install.sql.mysql.php');
+			if (defined('SQL_UPDATE_UTF8MB4')) {
+				Minz_Log::warning('Updating MySQL to UTF8MB4...');
+				$hadTransaction = $this->bd->inTransaction();
+				if ($hadTransaction) {
+					$this->bd->commit();
+				}
+				$ok = false;
+				try {
+					$sql = sprintf(SQL_UPDATE_UTF8MB4, $this->prefix, $db['base']);
+					$stm = $this->bd->prepare($sql);
+					$ok = $stm->execute();
+				} catch (Exception $e) {
+					Minz_Log::error('FreshRSS_EntryDAO::updateToUtf8mb4 error: ' . $e->getMessage());
+				}
+				if ($hadTransaction) {
+					$this->bd->beginTransaction();
+					//NB: Transaction not starting. Why? (tested on PHP 7.0.8-0ubuntu and MySQL 5.7.13-0ubuntu)
+				}
+				return $ok;
+			}
+		}
+		return false;
+	}
+
+	protected function autoUpdateDb($errorInfo) {
+		if (isset($errorInfo[0])) {
+			if ($errorInfo[0] === '42S22') {	//ER_BAD_FIELD_ERROR
+				//autoAddColumn
+				foreach (array('lastSeen', 'hash') as $column) {
+					if (stripos($errorInfo[2], $column) !== false) {
+						return $this->addColumn($column);
+					}
+				}
+			}
+		}
+		if (isset($errorInfo[1])) {
+			if ($errorInfo[1] == '1366') {	//ER_TRUNCATED_WRONG_VALUE_FOR_FIELD
+				return $this->updateToUtf8mb4();
+			}
+		}
+		return false;
+	}
+
+	private $addEntryPrepared = null;
+
+	public function addEntry($valuesTmp) {
+		if ($this->addEntryPrepared === null) {
+			$sql = 'INSERT INTO `' . $this->prefix . 'entry` (id, guid, title, author, '
+			     . ($this->isCompressed() ? 'content_bin' : 'content')
+			     . ', link, date, `lastSeen`, hash, is_read, is_favorite, id_feed, tags) '
+			     . 'VALUES(:id, :guid, :title, :author, '
+			     . ($this->isCompressed() ? 'COMPRESS(:content)' : ':content')
+			     . ', :link, :date, :last_seen, '
+			     . $this->sqlHexDecode(':hash')
+			     . ', :is_read, :is_favorite, :id_feed, :tags)';
+			$this->addEntryPrepared = $this->bd->prepare($sql);
+		}
+		$this->addEntryPrepared->bindParam(':id', $valuesTmp['id']);
+		$valuesTmp['guid'] = substr($valuesTmp['guid'], 0, 760);
+		$valuesTmp['guid'] = safe_ascii($valuesTmp['guid']);
+		$this->addEntryPrepared->bindParam(':guid', $valuesTmp['guid']);
+		$valuesTmp['title'] = substr($valuesTmp['title'], 0, 255);
+		$this->addEntryPrepared->bindParam(':title', $valuesTmp['title']);
+		$valuesTmp['author'] = substr($valuesTmp['author'], 0, 255);
+		$this->addEntryPrepared->bindParam(':author', $valuesTmp['author']);
+		$this->addEntryPrepared->bindParam(':content', $valuesTmp['content']);
+		$valuesTmp['link'] = substr($valuesTmp['link'], 0, 1023);
+		$valuesTmp['link'] = safe_ascii($valuesTmp['link']);
+		$this->addEntryPrepared->bindParam(':link', $valuesTmp['link']);
+		$this->addEntryPrepared->bindParam(':date', $valuesTmp['date'], PDO::PARAM_INT);
+		$valuesTmp['lastSeen'] = time();
+		$this->addEntryPrepared->bindParam(':last_seen', $valuesTmp['lastSeen'], PDO::PARAM_INT);
+		$valuesTmp['is_read'] = $valuesTmp['is_read'] ? 1 : 0;
+		$this->addEntryPrepared->bindParam(':is_read', $valuesTmp['is_read'], PDO::PARAM_INT);
+		$valuesTmp['is_favorite'] = $valuesTmp['is_favorite'] ? 1 : 0;
+		$this->addEntryPrepared->bindParam(':is_favorite', $valuesTmp['is_favorite'], PDO::PARAM_INT);
+		$this->addEntryPrepared->bindParam(':id_feed', $valuesTmp['id_feed'], PDO::PARAM_INT);
+		$valuesTmp['tags'] = substr($valuesTmp['tags'], 0, 1023);
+		$this->addEntryPrepared->bindParam(':tags', $valuesTmp['tags']);
+
+		if ($this->hasNativeHex()) {
+			$this->addEntryPrepared->bindParam(':hash', $valuesTmp['hash']);
+		} else {
+			$valuesTmp['hashBin'] = pack('H*', $valuesTmp['hash']);	//hex2bin() is PHP5.4+
+			$this->addEntryPrepared->bindParam(':hash', $valuesTmp['hashBin']);
+		}
+
+		if ($this->addEntryPrepared && $this->addEntryPrepared->execute()) {
 			return $this->bd->lastInsertId();
 		} else {
-			$info = $stm->errorInfo();
-			if ((int)($info[0] / 1000) !== 23) {	//Filter out "SQLSTATE Class code 23: Constraint Violation" because of expected duplicate entries
-				Minz_Log::record ('SQL error ' . $info[0] . ': ' . $info[1] . ' ' . $info[2]
-				. ' while adding entry in feed ' . $valuesTmp['id_feed'] . ' with title: ' . $valuesTmp['title'], Minz_Log::ERROR);
-			} /*else {
-				Minz_Log::record ('SQL error ' . $info[0] . ': ' . $info[1] . ' ' . $info[2]
-				. ' while adding entry in feed ' . $valuesTmp['id_feed'] . ' with title: ' . $valuesTmp['title'], Minz_Log::DEBUG);
-			}*/
+			$info = $this->addEntryPrepared == null ? array(0 => '', 1 => '', 2 => 'syntax error') : $this->addEntryPrepared->errorInfo();
+			if ($this->autoUpdateDb($info)) {
+				return $this->addEntry($valuesTmp);
+			} elseif ((int)($info[0] / 1000) !== 23) {	//Filter out "SQLSTATE Class code 23: Constraint Violation" because of expected duplicate entries
+				Minz_Log::error('SQL error addEntry: ' . $info[0] . ': ' . $info[1] . ' ' . $info[2]
+					. ' while adding entry in feed ' . $valuesTmp['id_feed'] . ' with title: ' . $valuesTmp['title']);
+			}
 			return false;
 		}
 	}
 
-	public function markFavorite ($id, $is_favorite = true) {
-		$sql = 'UPDATE `' . $this->prefix . 'entry` e '
-		     . 'SET e.is_favorite = ? '
-		     . 'WHERE e.id=?';
-		$values = array ($is_favorite ? 1 : 0, $id);
-		$stm = $this->bd->prepare ($sql);
-		if ($stm && $stm->execute ($values)) {
-			return $stm->rowCount();
+	private $updateEntryPrepared = null;
+
+	public function updateEntry($valuesTmp) {
+		if (!isset($valuesTmp['is_read'])) {
+			$valuesTmp['is_read'] = null;
+		}
+
+		if ($this->updateEntryPrepared === null) {
+			$sql = 'UPDATE `' . $this->prefix . 'entry` '
+			     . 'SET title=:title, author=:author, '
+			     . ($this->isCompressed() ? 'content_bin=COMPRESS(:content)' : 'content=:content')
+			     . ', link=:link, date=:date, `lastSeen`=:last_seen, '
+			     . 'hash=' . $this->sqlHexDecode(':hash')
+			     . ', ' . ($valuesTmp['is_read'] === null ? '' : 'is_read=:is_read, ')
+			     . 'tags=:tags '
+			     . 'WHERE id_feed=:id_feed AND guid=:guid';
+			$this->updateEntryPrepared = $this->bd->prepare($sql);
+		}
+
+		$valuesTmp['guid'] = substr($valuesTmp['guid'], 0, 760);
+		$this->updateEntryPrepared->bindParam(':guid', $valuesTmp['guid']);
+		$valuesTmp['title'] = substr($valuesTmp['title'], 0, 255);
+		$this->updateEntryPrepared->bindParam(':title', $valuesTmp['title']);
+		$valuesTmp['author'] = substr($valuesTmp['author'], 0, 255);
+		$this->updateEntryPrepared->bindParam(':author', $valuesTmp['author']);
+		$this->updateEntryPrepared->bindParam(':content', $valuesTmp['content']);
+		$valuesTmp['link'] = substr($valuesTmp['link'], 0, 1023);
+		$valuesTmp['link'] = safe_ascii($valuesTmp['link']);
+		$this->updateEntryPrepared->bindParam(':link', $valuesTmp['link']);
+		$this->updateEntryPrepared->bindParam(':date', $valuesTmp['date'], PDO::PARAM_INT);
+		$valuesTmp['lastSeen'] = time();
+		$this->updateEntryPrepared->bindParam(':last_seen', $valuesTmp['lastSeen'], PDO::PARAM_INT);
+		if ($valuesTmp['is_read'] !== null) {
+			$this->updateEntryPrepared->bindValue(':is_read', $valuesTmp['is_read'] ? 1 : 0, PDO::PARAM_INT);
+		}
+		$this->updateEntryPrepared->bindParam(':id_feed', $valuesTmp['id_feed'], PDO::PARAM_INT);
+		$valuesTmp['tags'] = substr($valuesTmp['tags'], 0, 1023);
+		$this->updateEntryPrepared->bindParam(':tags', $valuesTmp['tags']);
+
+		if ($this->hasNativeHex()) {
+			$this->updateEntryPrepared->bindParam(':hash', $valuesTmp['hash']);
+		} else {
+			$valuesTmp['hashBin'] = pack('H*', $valuesTmp['hash']);	//hex2bin() is PHP5.4+
+			$this->updateEntryPrepared->bindParam(':hash', $valuesTmp['hashBin']);
+		}
+
+		if ($this->updateEntryPrepared && $this->updateEntryPrepared->execute()) {
+			return $this->bd->lastInsertId();
 		} else {
-			$info = $stm->errorInfo();
-			Minz_Log::record ('SQL error : ' . $info[2], Minz_Log::ERROR);
+			$info = $this->updateEntryPrepared == null ? array(0 => '', 1 => '', 2 => 'syntax error') : $this->updateEntryPrepared->errorInfo();
+			if ($this->autoUpdateDb($info)) {
+				return $this->updateEntry($valuesTmp);
+			}
+			Minz_Log::error('SQL error updateEntry: ' . $info[0] . ': ' . $info[1] . ' ' . $info[2]
+				. ' while updating entry with GUID ' . $valuesTmp['guid'] . ' in feed ' . $valuesTmp['id_feed']);
 			return false;
 		}
 	}
-	public function markRead ($id, $is_read = true) {
-		$sql = 'UPDATE `' . $this->prefix . 'entry` e INNER JOIN `' . $this->prefix . 'feed` f ON e.id_feed = f.id '
-		     . 'SET e.is_read = ?,'
-		     . 'f.cache_nbUnreads=f.cache_nbUnreads' . ($is_read ? '-' : '+') . '1 '
-		     . 'WHERE e.id=?';
-		$values = array ($is_read ? 1 : 0, $id);
-		$stm = $this->bd->prepare ($sql);
-		if ($stm && $stm->execute ($values)) {
+
+	/**
+	 * Toggle favorite marker on one or more article
+	 *
+	 * @todo simplify the query by removing the str_repeat. I am pretty sure
+	 * there is an other way to do that.
+	 *
+	 * @param integer|array $ids
+	 * @param boolean $is_favorite
+	 * @return false|integer
+	 */
+	public function markFavorite($ids, $is_favorite = true) {
+		if (!is_array($ids)) {
+			$ids = array($ids);
+		}
+		if (count($ids) < 1) {
+			return 0;
+		}
+		FreshRSS_UserDAO::touch();
+		$sql = 'UPDATE `' . $this->prefix . 'entry` '
+		     . 'SET is_favorite=? '
+		     . 'WHERE id IN (' . str_repeat('?,', count($ids) - 1). '?)';
+		$values = array($is_favorite ? 1 : 0);
+		$values = array_merge($values, $ids);
+		$stm = $this->bd->prepare($sql);
+		if ($stm && $stm->execute($values)) {
 			return $stm->rowCount();
 		} else {
-			$info = $stm->errorInfo();
-			Minz_Log::record ('SQL error : ' . $info[2], Minz_Log::ERROR);
+			$info = $stm == null ? array(2 => 'syntax error') : $stm->errorInfo();
+			Minz_Log::error('SQL error markFavorite: ' . $info[2]);
 			return false;
 		}
 	}
-	public function markReadEntries ($idMax = 0, $favorites = false) {
-		if ($idMax === 0) {
-			$sql = 'UPDATE `' . $this->prefix . 'entry` e INNER JOIN `' . $this->prefix . 'feed` f ON e.id_feed = f.id '
-			     . 'SET e.is_read = 1, f.cache_nbUnreads=0 '
-			     . 'WHERE e.is_read = 0 AND ';
-			if ($favorites) {
-				$sql .= 'e.is_favorite = 1';
-			} else {
-				$sql .= 'f.priority > 0';
-			}
-			$stm = $this->bd->prepare ($sql);
-			if ($stm && $stm->execute ()) {
-				return $stm->rowCount();
-			} else {
-				$info = $stm->errorInfo();
-				Minz_Log::record ('SQL error : ' . $info[2], Minz_Log::ERROR);
-				return false;
-			}
+
+	/**
+	 * Update the unread article cache held on every feed details.
+	 * Depending on the parameters, it updates the cache on one feed, on all
+	 * feeds from one category or on all feeds.
+	 *
+	 * @todo It can use the query builder refactoring to build that query
+	 *
+	 * @param false|integer $catId category ID
+	 * @param false|integer $feedId feed ID
+	 * @return boolean
+	 */
+	protected function updateCacheUnreads($catId = false, $feedId = false) {
+		$sql = 'UPDATE `' . $this->prefix . 'feed` f '
+		 . 'LEFT OUTER JOIN ('
+		 .	'SELECT e.id_feed, '
+		 .	'COUNT(*) AS nbUnreads '
+		 .	'FROM `' . $this->prefix . 'entry` e '
+		 .	'WHERE e.is_read=0 '
+		 .	'GROUP BY e.id_feed'
+		 . ') x ON x.id_feed=f.id '
+		 . 'SET f.`cache_nbUnreads`=COALESCE(x.nbUnreads, 0)';
+		$hasWhere = false;
+		$values = array();
+		if ($feedId !== false) {
+			$sql .= $hasWhere ? ' AND' : ' WHERE';
+			$hasWhere = true;
+			$sql .= ' f.id=?';
+			$values[] = $id;
+		}
+		if ($catId !== false) {
+			$sql .= $hasWhere ? ' AND' : ' WHERE';
+			$hasWhere = true;
+			$sql .= ' f.category=?';
+			$values[] = $catId;
+		}
+		$stm = $this->bd->prepare($sql);
+		if ($stm && $stm->execute($values)) {
+			return true;
 		} else {
-			$this->bd->beginTransaction ();
+			$info = $stm == null ? array(2 => 'syntax error') : $stm->errorInfo();
+			Minz_Log::error('SQL error updateCacheUnreads: ' . $info[2]);
+			return false;
+		}
+	}
 
-			$sql = 'UPDATE `' . $this->prefix . 'entry` e INNER JOIN `' . $this->prefix . 'feed` f ON e.id_feed = f.id '
-			     . 'SET e.is_read = 1 '
-			     . 'WHERE e.is_read = 0 AND e.id <= ? AND ';
-			if ($favorites) {
-				$sql .= 'e.is_favorite = 1';
-			} else {
-				$sql .= 'f.priority > 0';
+	/**
+	 * Toggle the read marker on one or more article.
+	 * Then the cache is updated.
+	 *
+	 * @todo change the way the query is build because it seems there is
+	 * unnecessary code in here. For instance, the part with the str_repeat.
+	 * @todo remove code duplication. It seems the code is basically the
+	 * same if it is an array or not.
+	 *
+	 * @param integer|array $ids
+	 * @param boolean $is_read
+	 * @return integer affected rows
+	 */
+	public function markRead($ids, $is_read = true) {
+		FreshRSS_UserDAO::touch();
+		if (is_array($ids)) {	//Many IDs at once (used by API)
+			if (count($ids) < 6) {	//Speed heuristics
+				$affected = 0;
+				foreach ($ids as $id) {
+					$affected += $this->markRead($id, $is_read);
+				}
+				return $affected;
 			}
-			$values = array ($idMax);
-			$stm = $this->bd->prepare ($sql);
-			if (!($stm && $stm->execute ($values))) {
-				$info = $stm->errorInfo();
-				Minz_Log::record ('SQL error : ' . $info[2], Minz_Log::ERROR);
-				$this->bd->rollBack ();
+
+			$sql = 'UPDATE `' . $this->prefix . 'entry` '
+				 . 'SET is_read=? '
+				 . 'WHERE id IN (' . str_repeat('?,', count($ids) - 1). '?)';
+			$values = array($is_read ? 1 : 0);
+			$values = array_merge($values, $ids);
+			$stm = $this->bd->prepare($sql);
+			if (!($stm && $stm->execute($values))) {
+				$info = $stm == null ? array(2 => 'syntax error') : $stm->errorInfo();
+				Minz_Log::error('SQL error markRead: ' . $info[2]);
 				return false;
 			}
 			$affected = $stm->rowCount();
-
-			if ($affected > 0) {
-				$sql = 'UPDATE `' . $this->prefix . 'feed` f '
-			     . 'LEFT OUTER JOIN ('
-			     .	'SELECT e.id_feed, '
-			     .	'COUNT(*) AS nbUnreads '
-			     .	'FROM `' . $this->prefix . 'entry` e '
-			     .	'WHERE e.is_read = 0 '
-			     .	'GROUP BY e.id_feed'
-			     . ') x ON x.id_feed=f.id '
-			     . 'SET f.cache_nbUnreads=COALESCE(x.nbUnreads, 0)';
-				$stm = $this->bd->prepare ($sql);
-				if (!($stm && $stm->execute ())) {
-					$info = $stm->errorInfo();
-					Minz_Log::record ('SQL error : ' . $info[2], Minz_Log::ERROR);
-					$this->bd->rollBack ();
-					return false;
-				}
+			if (($affected > 0) && (!$this->updateCacheUnreads(false, false))) {
+				return false;
 			}
-
-			$this->bd->commit ();
 			return $affected;
-		}
-	}
-	public function markReadCat ($id, $idMax = 0) {
-		if ($idMax === 0) {
-			$sql = 'UPDATE `' . $this->prefix . 'entry` e INNER JOIN `' . $this->prefix . 'feed` f ON e.id_feed = f.id '
-			     . 'SET e.is_read = 1, f.cache_nbUnreads=0 '
-			     . 'WHERE f.category = ? AND e.is_read = 0';
-			$values = array ($id);
-			$stm = $this->bd->prepare ($sql);
-			if ($stm && $stm->execute ($values)) {
+		} else {
+			$sql = 'UPDATE `' . $this->prefix . 'entry` e INNER JOIN `' . $this->prefix . 'feed` f ON e.id_feed=f.id '
+				 . 'SET e.is_read=?,'
+				 . 'f.`cache_nbUnreads`=f.`cache_nbUnreads`' . ($is_read ? '-' : '+') . '1 '
+				 . 'WHERE e.id=? AND e.is_read=?';
+			$values = array($is_read ? 1 : 0, $ids, $is_read ? 0 : 1);
+			$stm = $this->bd->prepare($sql);
+			if ($stm && $stm->execute($values)) {
 				return $stm->rowCount();
 			} else {
-				$info = $stm->errorInfo();
-				Minz_Log::record ('SQL error : ' . $info[2], Minz_Log::ERROR);
-				return false;
-			}
-		} else {
-			$this->bd->beginTransaction ();
-
-			$sql = 'UPDATE `' . $this->prefix . 'entry` e INNER JOIN `' . $this->prefix . 'feed` f ON e.id_feed = f.id '
-			     . 'SET e.is_read = 1 '
-			     . 'WHERE f.category = ? AND e.is_read = 0 AND e.id <= ?';
-			$values = array ($id, $idMax);
-			$stm = $this->bd->prepare ($sql);
-			if (!($stm && $stm->execute ($values))) {
-				$info = $stm->errorInfo();
-				Minz_Log::record ('SQL error : ' . $info[2], Minz_Log::ERROR);
-				$this->bd->rollBack ();
+				$info = $stm == null ? array(2 => 'syntax error') : $stm->errorInfo();
+				Minz_Log::error('SQL error markRead: ' . $info[2]);
 				return false;
 			}
-			$affected = $stm->rowCount();
+		}
+	}
 
-			if ($affected > 0) {
-				$sql = 'UPDATE `' . $this->prefix . 'feed` f '
-			     . 'LEFT OUTER JOIN ('
-			     .	'SELECT e.id_feed, '
-			     .	'COUNT(*) AS nbUnreads '
-			     .	'FROM `' . $this->prefix . 'entry` e '
-			     .	'WHERE e.is_read = 0 '
-			     .	'GROUP BY e.id_feed'
-			     . ') x ON x.id_feed=f.id '
-			     . 'SET f.cache_nbUnreads=COALESCE(x.nbUnreads, 0) '
-			     . 'WHERE f.category = ?';
-				$values = array ($id);
-				$stm = $this->bd->prepare ($sql);
-				if (!($stm && $stm->execute ($values))) {
-					$info = $stm->errorInfo();
-					Minz_Log::record ('SQL error : ' . $info[2], Minz_Log::ERROR);
-					$this->bd->rollBack ();
-					return false;
-				}
-			}
+	/**
+	 * Mark all entries as read depending on parameters.
+	 * If $onlyFavorites is true, it is used when the user mark as read in
+	 * the favorite pseudo-category.
+	 * If $priorityMin is greater than 0, it is used when the user mark as
+	 * read in the main feed pseudo-category.
+	 * Then the cache is updated.
+	 *
+	 * If $idMax equals 0, a deprecated debug message is logged
+	 *
+	 * @todo refactor this method along with markReadCat and markReadFeed
+	 * since they are all doing the same thing. I think we need to build a
+	 * tool to generate the query instead of having queries all over the
+	 * place. It will be reused also for the filtering making every thing
+	 * separated.
+	 *
+	 * @param integer $idMax fail safe article ID
+	 * @param boolean $onlyFavorites
+	 * @param integer $priorityMin
+	 * @return integer affected rows
+	 */
+	public function markReadEntries($idMax = 0, $onlyFavorites = false, $priorityMin = 0, $filter = null, $state = 0) {
+		FreshRSS_UserDAO::touch();
+		if ($idMax == 0) {
+			$idMax = time() . '000000';
+			Minz_Log::debug('Calling markReadEntries(0) is deprecated!');
+		}
 
-			$this->bd->commit ();
-			return $affected;
+		$sql = 'UPDATE `' . $this->prefix . 'entry` e INNER JOIN `' . $this->prefix . 'feed` f ON e.id_feed=f.id '
+			 . 'SET e.is_read=1 '
+			 . 'WHERE e.is_read=0 AND e.id <= ?';
+		if ($onlyFavorites) {
+			$sql .= ' AND e.is_favorite=1';
+		} elseif ($priorityMin >= 0) {
+			$sql .= ' AND f.priority > ' . intval($priorityMin);
+		}
+		$values = array($idMax);
+
+		list($searchValues, $search) = $this->sqlListEntriesWhere('e.', $filter, $state);
+
+		$stm = $this->bd->prepare($sql . $search);
+		if (!($stm && $stm->execute(array_merge($values, $searchValues)))) {
+			$info = $stm == null ? array(2 => 'syntax error') : $stm->errorInfo();
+			Minz_Log::error('SQL error markReadEntries: ' . $info[2]);
+			return false;
+		}
+		$affected = $stm->rowCount();
+		if (($affected > 0) && (!$this->updateCacheUnreads(false, false))) {
+			return false;
 		}
+		return $affected;
 	}
-	public function markReadFeed ($id, $idMax = 0) {
-		if ($idMax === 0) {
-			$sql = 'UPDATE `' . $this->prefix . 'entry` e INNER JOIN `' . $this->prefix . 'feed` f ON e.id_feed = f.id '
-			     . 'SET e.is_read = 1, f.cache_nbUnreads=0 '
-			     . 'WHERE f.id=? AND e.is_read = 0';
-			$values = array ($id);
-			$stm = $this->bd->prepare ($sql);
-			if ($stm && $stm->execute ($values)) {
-				return $stm->rowCount();
-			} else {
-				$info = $stm->errorInfo();
-				Minz_Log::record ('SQL error : ' . $info[2], Minz_Log::ERROR);
-				return false;
-			}
-		} else {
-			$this->bd->beginTransaction ();
-
-			$sql = 'UPDATE `' . $this->prefix . 'entry` e INNER JOIN `' . $this->prefix . 'feed` f ON e.id_feed = f.id '
-			     . 'SET e.is_read = 1 '
-			     . 'WHERE f.id=? AND e.is_read = 0 AND e.id <= ?';
-			$values = array ($id, $idMax);
-			$stm = $this->bd->prepare ($sql);
-			if (!($stm && $stm->execute ($values))) {
-				$info = $stm->errorInfo();
-				Minz_Log::record ('SQL error : ' . $info[2], Minz_Log::ERROR);
-				$this->bd->rollBack ();
-				return false;
-			}
-			$affected = $stm->rowCount();
 
-			if ($affected > 0) {
-				$sql = 'UPDATE `' . $this->prefix . 'feed` f '
-				     . 'SET f.cache_nbUnreads=f.cache_nbUnreads-' . $affected
-				     . ' WHERE f.id=?';
-				$values = array ($id);
-				$stm = $this->bd->prepare ($sql);
-				if (!($stm && $stm->execute ($values))) {
-					$info = $stm->errorInfo();
-					Minz_Log::record ('SQL error : ' . $info[2], Minz_Log::ERROR);
-					$this->bd->rollBack ();
-					return false;
-				}
-			}
+	/**
+	 * Mark all the articles in a category as read.
+	 * There is a fail safe to prevent to mark as read articles that are
+	 * loaded during the mark as read action. Then the cache is updated.
+	 *
+	 * If $idMax equals 0, a deprecated debug message is logged
+	 *
+	 * @param integer $id category ID
+	 * @param integer $idMax fail safe article ID
+	 * @return integer affected rows
+	 */
+	public function markReadCat($id, $idMax = 0, $filter = null, $state = 0) {
+		FreshRSS_UserDAO::touch();
+		if ($idMax == 0) {
+			$idMax = time() . '000000';
+			Minz_Log::debug('Calling markReadCat(0) is deprecated!');
+		}
 
-			$this->bd->commit ();
-			return $affected;
+		$sql = 'UPDATE `' . $this->prefix . 'entry` e INNER JOIN `' . $this->prefix . 'feed` f ON e.id_feed=f.id '
+			 . 'SET e.is_read=1 '
+			 . 'WHERE f.category=? AND e.is_read=0 AND e.id <= ?';
+		$values = array($id, $idMax);
+
+		list($searchValues, $search) = $this->sqlListEntriesWhere('e.', $filter, $state);
+
+		$stm = $this->bd->prepare($sql . $search);
+		if (!($stm && $stm->execute(array_merge($values, $searchValues)))) {
+			$info = $stm == null ? array(2 => 'syntax error') : $stm->errorInfo();
+			Minz_Log::error('SQL error markReadCat: ' . $info[2]);
+			return false;
+		}
+		$affected = $stm->rowCount();
+		if (($affected > 0) && (!$this->updateCacheUnreads($id, false))) {
+			return false;
+		}
+		return $affected;
+	}
+
+	/**
+	 * Mark all the articles in a feed as read.
+	 * There is a fail safe to prevent to mark as read articles that are
+	 * loaded during the mark as read action. Then the cache is updated.
+	 *
+	 * If $idMax equals 0, a deprecated debug message is logged
+	 *
+	 * @param integer $id_feed feed ID
+	 * @param integer $idMax fail safe article ID
+	 * @return integer affected rows
+	 */
+	public function markReadFeed($id_feed, $idMax = 0, $filter = null, $state = 0) {
+		FreshRSS_UserDAO::touch();
+		if ($idMax == 0) {
+			$idMax = time() . '000000';
+			Minz_Log::debug('Calling markReadFeed(0) is deprecated!');
+		}
+		$this->bd->beginTransaction();
+
+		$sql = 'UPDATE `' . $this->prefix . 'entry` '
+			 . 'SET is_read=1 '
+			 . 'WHERE id_feed=? AND is_read=0 AND id <= ?';
+		$values = array($id_feed, $idMax);
+
+		list($searchValues, $search) = $this->sqlListEntriesWhere('', $filter, $state);
+
+		$stm = $this->bd->prepare($sql . $search);
+		if (!($stm && $stm->execute(array_merge($values, $searchValues)))) {
+			$info = $stm == null ? array(2 => 'syntax error') : $stm->errorInfo();
+			Minz_Log::error('SQL error markReadFeed: ' . $info[2] . ' with SQL: ' . $sql . $search);
+			$this->bd->rollBack();
+			return false;
 		}
+		$affected = $stm->rowCount();
+
+		if ($affected > 0) {
+			$sql = 'UPDATE `' . $this->prefix . 'feed` '
+				 . 'SET `cache_nbUnreads`=`cache_nbUnreads`-' . $affected
+				 . ' WHERE id=?';
+			$values = array($id_feed);
+			$stm = $this->bd->prepare($sql);
+			if (!($stm && $stm->execute($values))) {
+				$info = $stm == null ? array(2 => 'syntax error') : $stm->errorInfo();
+				Minz_Log::error('SQL error markReadFeed cache: ' . $info[2]);
+				$this->bd->rollBack();
+				return false;
+			}
+		}
+
+		$this->bd->commit();
+		return $affected;
 	}
 
-	public function searchByGuid ($feed_id, $id) {
+	public function searchByGuid($id_feed, $guid) {
 		// un guid est unique pour un flux donné
-		$sql = 'SELECT id, guid, title, author, UNCOMPRESS(content_bin) AS content, link, date, is_read, is_favorite, id_feed, tags '
+		$sql = 'SELECT id, guid, title, author, '
+		     . ($this->isCompressed() ? 'UNCOMPRESS(content_bin) AS content' : 'content')
+		     . ', link, date, is_read, is_favorite, id_feed, tags '
 		     . 'FROM `' . $this->prefix . 'entry` WHERE id_feed=? AND guid=?';
-		$stm = $this->bd->prepare ($sql);
+		$stm = $this->bd->prepare($sql);
 
-		$values = array (
-			$feed_id,
-			$id
+		$values = array(
+			$id_feed,
+			$guid,
 		);
 
-		$stm->execute ($values);
-		$res = $stm->fetchAll (PDO::FETCH_ASSOC);
-		$entries = self::daoToEntry ($res);
-		return isset ($entries[0]) ? $entries[0] : false;
+		$stm->execute($values);
+		$res = $stm->fetchAll(PDO::FETCH_ASSOC);
+		$entries = self::daoToEntries($res);
+		return isset($entries[0]) ? $entries[0] : null;
 	}
 
-	public function searchById ($id) {
-		$sql = 'SELECT id, guid, title, author, UNCOMPRESS(content_bin) AS content, link, date, is_read, is_favorite, id_feed, tags '
+	public function searchById($id) {
+		$sql = 'SELECT id, guid, title, author, '
+		     . ($this->isCompressed() ? 'UNCOMPRESS(content_bin) AS content' : 'content')
+		     . ', link, date, is_read, is_favorite, id_feed, tags '
 		     . 'FROM `' . $this->prefix . 'entry` WHERE id=?';
-		$stm = $this->bd->prepare ($sql);
+		$stm = $this->bd->prepare($sql);
 
-		$values = array ($id);
+		$values = array($id);
 
-		$stm->execute ($values);
-		$res = $stm->fetchAll (PDO::FETCH_ASSOC);
-		$entries = self::daoToEntry ($res);
-		return isset ($entries[0]) ? $entries[0] : false;
+		$stm->execute($values);
+		$res = $stm->fetchAll(PDO::FETCH_ASSOC);
+		$entries = self::daoToEntries($res);
+		return isset($entries[0]) ? $entries[0] : null;
 	}
 
-	public function listWhere($type = 'a', $id = '', $state = 'all', $order = 'DESC', $limit = 1, $firstId = '', $filter = '', $date_min = 0, $keepHistoryDefault = 0) {
-		$where = '';
-		$joinFeed = false;
+	protected function sqlConcat($s1, $s2) {
+		return 'CONCAT(' . $s1 . ',' . $s2 . ')';	//MySQL
+	}
+
+	protected function sqlListEntriesWhere($alias = '', $filter = null, $state = FreshRSS_Entry::STATE_ALL, $order = 'DESC', $firstId = '', $date_min = 0) {
+		$search = ' ';
 		$values = array();
-		switch ($type) {
-			case 'a':
-				$where .= 'f.priority > 0 ';
-				$joinFeed = true;
-				break;
-			case 's':
-				$where .= 'e1.is_favorite = 1 ';
-				break;
-			case 'c':
-				$where .= 'f.category = ? ';
-				$values[] = intval($id);
-				$joinFeed = true;
-				break;
-			case 'f':
-				$where .= 'e1.id_feed = ? ';
-				$values[] = intval($id);
-				break;
-			default:
-				throw new FreshRSS_EntriesGetter_Exception ('Bad type in Entry->listByType: [' . $type . ']!');
+		if ($state & FreshRSS_Entry::STATE_NOT_READ) {
+			if (!($state & FreshRSS_Entry::STATE_READ)) {
+				$search .= 'AND ' . $alias . 'is_read=0 ';
+			}
 		}
-		switch ($state) {
-			case 'all':
-				break;
-			case 'not_read':
-				$where .= 'AND e1.is_read = 0 ';
-				break;
-			case 'read':
-				$where .= 'AND e1.is_read = 1 ';
-				break;
-			case 'favorite':
-				$where .= 'AND e1.is_favorite = 1 ';
-				break;
-			default:
-				throw new FreshRSS_EntriesGetter_Exception ('Bad state in Entry->listByType: [' . $state . ']!');
+		elseif ($state & FreshRSS_Entry::STATE_READ) {
+			$search .= 'AND ' . $alias . 'is_read=1 ';
+		}
+		if ($state & FreshRSS_Entry::STATE_FAVORITE) {
+			if (!($state & FreshRSS_Entry::STATE_NOT_FAVORITE)) {
+				$search .= 'AND ' . $alias . 'is_favorite=1 ';
+			}
 		}
+		elseif ($state & FreshRSS_Entry::STATE_NOT_FAVORITE) {
+			$search .= 'AND ' . $alias . 'is_favorite=0 ';
+		}
+
 		switch ($order) {
 			case 'DESC':
 			case 'ASC':
 				break;
 			default:
-				throw new FreshRSS_EntriesGetter_Exception ('Bad order in Entry->listByType: [' . $order . ']!');
+				throw new FreshRSS_EntriesGetter_Exception('Bad order in Entry->listByType: [' . $order . ']!');
 		}
+		/*if ($firstId === '' && parent::$sharedDbType === 'mysql') {
+			$firstId = $order === 'DESC' ? '9000000000'. '000000' : '0';	//MySQL optimization. TODO: check if this is needed again, after the filtering for old articles has been removed in 0.9-dev
+		}*/
 		if ($firstId !== '') {
-			$where .= 'AND e1.id ' . ($order === 'DESC' ? '<=' : '>=') . $firstId . ' ';
+			$search .= 'AND ' . $alias . 'id ' . ($order === 'DESC' ? '<=' : '>=') . $firstId . ' ';
 		}
-		if (($date_min > 0) && ($type !== 's')) {
-			$where .= 'AND (e1.id >= ' . $date_min . '000000 OR e1.is_read = 0 OR e1.is_favorite = 1 OR (f.keep_history <> 0';
-			if (intval($keepHistoryDefault) === 0) {
-				$where .= ' AND f.keep_history <> -2';	//default
-			}
-			$where .= ')) ';
-			$joinFeed = true;
+		if ($date_min > 0) {
+			$search .= 'AND ' . $alias . 'id >= ' . $date_min . '000000 ';
 		}
-		$search = '';
-		if ($filter !== '') {
-			$filter = trim($filter);
-			$filter = addcslashes($filter, '\\%_');
-			if (stripos($filter, 'intitle:') === 0) {
-				$filter = substr($filter, strlen('intitle:'));
-				$intitle = true;
-			} else {
-				$intitle = false;
+		if ($filter) {
+			if ($filter->getIntitle()) {
+				$search .= 'AND ' . $alias . 'title LIKE ? ';
+				$values[] = "%{$filter->getIntitle()}%";
 			}
-			if (stripos($filter, 'inurl:') === 0) {
-				$filter = substr($filter, strlen('inurl:'));
-				$inurl = true;
-			} else {
-				$inurl = false;
+			if ($filter->getInurl()) {
+				$search .= 'AND CONCAT(' . $alias . 'link, ' . $alias . 'guid) LIKE ? ';
+				$values[] = "%{$filter->getInurl()}%";
 			}
-			if (stripos($filter, 'author:') === 0) {
-				$filter = substr($filter, strlen('author:'));
-				$author = true;
-			} else {
-				$author = false;
+			if ($filter->getAuthor()) {
+				$search .= 'AND ' . $alias . 'author LIKE ? ';
+				$values[] = "%{$filter->getAuthor()}%";
 			}
-			$terms = array_unique(explode(' ', $filter));
-			sort($terms);	//Put #tags first
-			foreach ($terms as $word) {
-				$word = trim($word);
-				if (strlen($word) > 0) {
-					if ($intitle) {
-						$search .= 'AND e1.title LIKE ? ';
-						$values[] = '%' . $word .'%';
-					} elseif ($inurl) {
-						$search .= 'AND CONCAT(e1.link, e1.guid) LIKE ? ';
-						$values[] = '%' . $word .'%';
-					} elseif ($author) {
-						$search .= 'AND e1.author LIKE ? ';
-						$values[] = '%' . $word .'%';
-					} else {
-						if ($word[0] === '#' && isset($word[1])) {
-							$search .= 'AND e1.tags LIKE ? ';
-							$values[] = '%' . $word .'%';
-						} else {
-							$search .= 'AND CONCAT(e1.title, UNCOMPRESS(e1.content_bin)) LIKE ? ';
-							$values[] = '%' . $word .'%';
-						}
-					}
+			if ($filter->getMinDate()) {
+				$search .= 'AND ' . $alias . 'id >= ? ';
+				$values[] = "{$filter->getMinDate()}000000";
+			}
+			if ($filter->getMaxDate()) {
+				$search .= 'AND ' . $alias . 'id <= ? ';
+				$values[] = "{$filter->getMaxDate()}000000";
+			}
+			if ($filter->getMinPubdate()) {
+				$search .= 'AND ' . $alias . 'date >= ? ';
+				$values[] = $filter->getMinPubdate();
+			}
+			if ($filter->getMaxPubdate()) {
+				$search .= 'AND ' . $alias . 'date <= ? ';
+				$values[] = $filter->getMaxPubdate();
+			}
+			if ($filter->getTags()) {
+				$tags = $filter->getTags();
+				foreach ($tags as $tag) {
+					$search .= 'AND ' . $alias . 'tags LIKE ? ';
+					$values[] = "%{$tag}%";
 				}
 			}
+			if ($filter->getSearch()) {
+				$search_values = $filter->getSearch();
+				foreach ($search_values as $search_value) {
+					$search .= 'AND ' . $this->sqlconcat($alias . 'title', $this->isCompressed() ? 'UNCOMPRESS(' . $alias . 'content_bin)' : '' . $alias . 'content') . ' LIKE ? ';
+					$values[] = "%{$search_value}%";
+				}
+			}
+		}
+		return array($values, $search);
+	}
+
+	private function sqlListWhere($type = 'a', $id = '', $state = FreshRSS_Entry::STATE_ALL, $order = 'DESC', $limit = 1, $firstId = '', $filter = '', $date_min = 0) {
+		if (!$state) {
+			$state = FreshRSS_Entry::STATE_ALL;
+		}
+		$where = '';
+		$joinFeed = false;
+		$values = array();
+		switch ($type) {
+		case 'a':
+			$where .= 'f.priority > 0 ';
+			$joinFeed = true;
+			break;
+		case 's':	//Deprecated: use $state instead
+			$where .= 'e.is_favorite=1 ';
+			break;
+		case 'c':
+			$where .= 'f.category=? ';
+			$values[] = intval($id);
+			$joinFeed = true;
+			break;
+		case 'f':
+			$where .= 'e.id_feed=? ';
+			$values[] = intval($id);
+			break;
+		case 'A':
+			$where .= '1 ';
+			break;
+		default:
+			throw new FreshRSS_EntriesGetter_Exception('Bad type in Entry->listByType: [' . $type . ']!');
 		}
 
-		$sql = 'SELECT e.id, e.guid, e.title, e.author, UNCOMPRESS(e.content_bin) AS content, e.link, e.date, e.is_read, e.is_favorite, e.id_feed, e.tags '
-		     . 'FROM `' . $this->prefix . 'entry` e '
-		     . 'INNER JOIN (SELECT e1.id FROM `' . $this->prefix . 'entry` e1 '
-			     . ($joinFeed ? 'INNER JOIN `' . $this->prefix . 'feed` f ON e1.id_feed = f.id ' : '')
-			     . 'WHERE ' . $where
-			     . $search
-			     . 'ORDER BY e1.id ' . $order
-			     . ($limit > 0 ? ' LIMIT ' . $limit : '')	//TODO: See http://explainextended.com/2009/10/23/mysql-order-by-limit-performance-late-row-lookups/
-		     . ') e2 ON e2.id = e.id '
-		     . 'ORDER BY e.id ' . $order;
+		list($searchValues, $search) = $this->sqlListEntriesWhere('e.', $filter, $state, $order, $firstId, $date_min);
 
-		$stm = $this->bd->prepare ($sql);
-		$stm->execute ($values);
+		return array(array_merge($values, $searchValues),
+			'SELECT e.id FROM `' . $this->prefix . 'entry` e '
+			. ($joinFeed ? 'INNER JOIN `' . $this->prefix . 'feed` f ON e.id_feed=f.id ' : '')
+			. 'WHERE ' . $where
+			. $search
+			. 'ORDER BY e.id ' . $order
+			. ($limit > 0 ? ' LIMIT ' . $limit : ''));	//TODO: See http://explainextended.com/2009/10/23/mysql-order-by-limit-performance-late-row-lookups/
+	}
 
-		return self::daoToEntry ($stm->fetchAll (PDO::FETCH_ASSOC));
+	public function listWhereRaw($type = 'a', $id = '', $state = FreshRSS_Entry::STATE_ALL, $order = 'DESC', $limit = 1, $firstId = '', $filter = '', $date_min = 0) {
+		list($values, $sql) = $this->sqlListWhere($type, $id, $state, $order, $limit, $firstId, $filter, $date_min);
+
+		$sql = 'SELECT e0.id, e0.guid, e0.title, e0.author, '
+		     . ($this->isCompressed() ? 'UNCOMPRESS(content_bin) AS content' : 'content')
+		     . ', e0.link, e0.date, e0.is_read, e0.is_favorite, e0.id_feed, e0.tags '
+		     . 'FROM `' . $this->prefix . 'entry` e0 '
+		     . 'INNER JOIN ('
+		     . $sql
+		     . ') e2 ON e2.id=e0.id '
+		     . 'ORDER BY e0.id ' . $order;
+
+		$stm = $this->bd->prepare($sql);
+		$stm->execute($values);
+		return $stm;
 	}
 
-	public function listLastGuidsByFeed($id, $n) {
-		$sql = 'SELECT guid FROM `' . $this->prefix . 'entry` WHERE id_feed=? ORDER BY id DESC LIMIT ' . intval($n);
-		$stm = $this->bd->prepare ($sql);
-		$values = array ($id);
-		$stm->execute ($values);
-		return $stm->fetchAll (PDO::FETCH_COLUMN, 0);
+	public function listWhere($type = 'a', $id = '', $state = FreshRSS_Entry::STATE_ALL, $order = 'DESC', $limit = 1, $firstId = '', $filter = '', $date_min = 0) {
+		$stm = $this->listWhereRaw($type, $id, $state, $order, $limit, $firstId, $filter, $date_min);
+		return self::daoToEntries($stm->fetchAll(PDO::FETCH_ASSOC));
 	}
 
-	public function countUnreadRead () {
-		$sql = 'SELECT COUNT(e.id) AS count FROM `' . $this->prefix . 'entry` e INNER JOIN `' . $this->prefix . 'feed` f ON e.id_feed = f.id WHERE priority > 0'
-		     . ' UNION SELECT COUNT(e.id) AS count FROM `' . $this->prefix . 'entry` e INNER JOIN `' . $this->prefix . 'feed` f ON e.id_feed = f.id WHERE priority > 0 AND is_read = 0';
-		$stm = $this->bd->prepare ($sql);
-		$stm->execute ();
-		$res = $stm->fetchAll (PDO::FETCH_COLUMN, 0);
+	public function listIdsWhere($type = 'a', $id = '', $state = FreshRSS_Entry::STATE_ALL, $order = 'DESC', $limit = 1, $firstId = '', $filter = '', $date_min = 0) {	//For API
+		list($values, $sql) = $this->sqlListWhere($type, $id, $state, $order, $limit, $firstId, $filter, $date_min);
+
+		$stm = $this->bd->prepare($sql);
+		$stm->execute($values);
+
+		return $stm->fetchAll(PDO::FETCH_COLUMN, 0);
+	}
+
+	public function listHashForFeedGuids($id_feed, $guids) {
+		if (count($guids) < 1) {
+			return array();
+		}
+		$guids = array_unique($guids);
+		$sql = 'SELECT guid, ' . $this->sqlHexEncode('hash') . ' AS hex_hash FROM `' . $this->prefix . 'entry` WHERE id_feed=? AND guid IN (' . str_repeat('?,', count($guids) - 1). '?)';
+		$stm = $this->bd->prepare($sql);
+		$values = array($id_feed);
+		$values = array_merge($values, $guids);
+		if ($stm && $stm->execute($values)) {
+			$result = array();
+			$rows = $stm->fetchAll(PDO::FETCH_ASSOC);
+			foreach ($rows as $row) {
+				$result[$row['guid']] = $row['hex_hash'];
+			}
+			return $result;
+		} else {
+			$info = $stm == null ? array(0 => '', 1 => '', 2 => 'syntax error') : $stm->errorInfo();
+			if ($this->autoUpdateDb($info)) {
+				return $this->listHashForFeedGuids($id_feed, $guids);
+			}
+			Minz_Log::error('SQL error listHashForFeedGuids: ' . $info[0] . ': ' . $info[1] . ' ' . $info[2]
+				. ' while querying feed ' . $id_feed);
+			return false;
+		}
+	}
+
+	public function updateLastSeen($id_feed, $guids, $mtime = 0) {
+		if (count($guids) < 1) {
+			return 0;
+		}
+		$sql = 'UPDATE `' . $this->prefix . 'entry` SET `lastSeen`=? WHERE id_feed=? AND guid IN (' . str_repeat('?,', count($guids) - 1). '?)';
+		$stm = $this->bd->prepare($sql);
+		if ($mtime <= 0) {
+			$mtime = time();
+		}
+		$values = array($mtime, $id_feed);
+		$values = array_merge($values, $guids);
+		if ($stm && $stm->execute($values)) {
+			return $stm->rowCount();
+		} else {
+			$info = $stm == null ? array(0 => '', 1 => '', 2 => 'syntax error') : $stm->errorInfo();
+			if ($this->autoUpdateDb($info)) {
+				return $this->updateLastSeen($id_feed, $guids);
+			}
+			Minz_Log::error('SQL error updateLastSeen: ' . $info[0] . ': ' . $info[1] . ' ' . $info[2]
+				. ' while updating feed ' . $id_feed);
+			return false;
+		}
+	}
+
+	public function countUnreadRead() {
+		$sql = 'SELECT COUNT(e.id) AS count FROM `' . $this->prefix . 'entry` e INNER JOIN `' . $this->prefix . 'feed` f ON e.id_feed=f.id WHERE priority > 0'
+		     . ' UNION SELECT COUNT(e.id) AS count FROM `' . $this->prefix . 'entry` e INNER JOIN `' . $this->prefix . 'feed` f ON e.id_feed=f.id WHERE priority > 0 AND is_read=0';
+		$stm = $this->bd->prepare($sql);
+		$stm->execute();
+		$res = $stm->fetchAll(PDO::FETCH_COLUMN, 0);
 		$all = empty($res[0]) ? 0 : $res[0];
 		$unread = empty($res[1]) ? 0 : $res[1];
 		return array('all' => $all, 'unread' => $unread, 'read' => $all - $unread);
 	}
-	public function count ($minPriority = null) {
-		$sql = 'SELECT COUNT(e.id) AS count FROM `' . $this->prefix . 'entry` e INNER JOIN `' . $this->prefix . 'feed` f ON e.id_feed = f.id';
+	public function count($minPriority = null) {
+		$sql = 'SELECT COUNT(e.id) AS count FROM `' . $this->prefix . 'entry` e INNER JOIN `' . $this->prefix . 'feed` f ON e.id_feed=f.id';
 		if ($minPriority !== null) {
 			$sql = ' WHERE priority > ' . intval($minPriority);
 		}
-		$stm = $this->bd->prepare ($sql);
-		$stm->execute ();
-		$res = $stm->fetchAll (PDO::FETCH_COLUMN, 0);
+		$stm = $this->bd->prepare($sql);
+		$stm->execute();
+		$res = $stm->fetchAll(PDO::FETCH_COLUMN, 0);
 		return $res[0];
 	}
-	public function countNotRead ($minPriority = null) {
-		$sql = 'SELECT COUNT(e.id) AS count FROM `' . $this->prefix . 'entry` e INNER JOIN `' . $this->prefix . 'feed` f ON e.id_feed = f.id WHERE is_read = 0';
+	public function countNotRead($minPriority = null) {
+		$sql = 'SELECT COUNT(e.id) AS count FROM `' . $this->prefix . 'entry` e INNER JOIN `' . $this->prefix . 'feed` f ON e.id_feed=f.id WHERE is_read=0';
 		if ($minPriority !== null) {
 			$sql = ' AND priority > ' . intval($minPriority);
 		}
-		$stm = $this->bd->prepare ($sql);
-		$stm->execute ();
-		$res = $stm->fetchAll (PDO::FETCH_COLUMN, 0);
+		$stm = $this->bd->prepare($sql);
+		$stm->execute();
+		$res = $stm->fetchAll(PDO::FETCH_COLUMN, 0);
 		return $res[0];
 	}
 
-	public function countUnreadReadFavorites () {
-		$sql = 'SELECT COUNT(id) FROM `' . $this->prefix . 'entry` WHERE is_favorite=1'
-		     . ' UNION SELECT COUNT(id) FROM `' . $this->prefix . 'entry` WHERE is_favorite=1 AND is_read = 0';
-		$stm = $this->bd->prepare ($sql);
-		$stm->execute ();
-		$res = $stm->fetchAll (PDO::FETCH_COLUMN, 0);
+	public function countUnreadReadFavorites() {
+		$sql = 'SELECT c FROM ('
+		     .	'SELECT COUNT(id) AS c, 1 as o FROM `' . $this->prefix . 'entry` WHERE is_favorite=1 '
+		     .	'UNION SELECT COUNT(id) AS c, 2 AS o FROM `' . $this->prefix . 'entry` WHERE is_favorite=1 AND is_read=0'
+		     .	') u ORDER BY o';
+		$stm = $this->bd->prepare($sql);
+		$stm->execute();
+		$res = $stm->fetchAll(PDO::FETCH_COLUMN, 0);
 		$all = empty($res[0]) ? 0 : $res[0];
 		$unread = empty($res[1]) ? 0 : $res[1];
 		return array('all' => $all, 'unread' => $unread, 'read' => $all - $unread);
 	}
 
 	public function optimizeTable() {
-		$sql = 'OPTIMIZE TABLE `' . $this->prefix . 'entry`';
-		$stm = $this->bd->prepare ($sql);
-		$stm->execute ();
+		$sql = 'OPTIMIZE TABLE `' . $this->prefix . 'entry`';	//MySQL
+		$stm = $this->bd->prepare($sql);
+		if ($stm) {
+			return $stm->execute();
+		}
 	}
 
-	public static function daoToEntry ($listDAO) {
-		$list = array ();
-
-		if (!is_array ($listDAO)) {
-			$listDAO = array ($listDAO);
+	public function size($all = false) {
+		$db = FreshRSS_Context::$system_conf->db;
+		$sql = 'SELECT SUM(data_length + index_length) FROM information_schema.TABLES WHERE table_schema=?';	//MySQL
+		$values = array($db['base']);
+		if (!$all) {
+			$sql .= ' AND table_name LIKE ?';
+			$values[] = $this->prefix . '%';
 		}
+		$stm = $this->bd->prepare($sql);
+		$stm->execute($values);
+		$res = $stm->fetchAll(PDO::FETCH_COLUMN, 0);
+		return $res[0];
+	}
 
-		foreach ($listDAO as $key => $dao) {
-			$entry = new FreshRSS_Entry (
+	public static function daoToEntry($dao) {
+		$entry = new FreshRSS_Entry(
 				$dao['id_feed'],
 				$dao['guid'],
 				$dao['title'],
@@ -459,13 +827,24 @@ class FreshRSS_EntryDAO extends Minz_ModelPdo {
 				$dao['is_favorite'],
 				$dao['tags']
 			);
-			if (isset ($dao['id'])) {
-				$entry->_id ($dao['id']);
-			}
-			$list[] = $entry;
+		if (isset($dao['id'])) {
+			$entry->_id($dao['id']);
+		}
+		return $entry;
+	}
+
+	private static function daoToEntries($listDAO) {
+		$list = array();
+
+		if (!is_array($listDAO)) {
+			$listDAO = array($listDAO);
+		}
+
+		foreach ($listDAO as $key => $dao) {
+			$list[] = self::daoToEntry($dao);
 		}
 
-		unset ($listDAO);
+		unset($listDAO);
 
 		return $list;
 	}