Candidate implementation of defered insertion

https://github.com/FreshRSS/FreshRSS/issues/530

1 files changed, 26 insertions, 0 deletions

diff --git a/app/Models/EntryDAOPGSQL.php b/app/Models/EntryDAOPGSQL.php
index b96a62ebc..b25993c47 100644
--- a/app/Models/EntryDAOPGSQL.php
+++ b/app/Models/EntryDAOPGSQL.php
@@ -11,6 +11,11 @@ class FreshRSS_EntryDAOPGSQL extends FreshRSS_EntryDAOSQLite {
 	}
 
 	protected function autoUpdateDb($errorInfo) {
+		if (isset($errorInfo[0])) { 
+			if ($errorInfo[0] === '42P01' && stripos($errorInfo[2], 'entrytmp') !== false) {	//undefined_table
+				return $this->createEntryTempTable();
+			}
+		}
 		return false;
 	}
 
@@ -18,6 +23,27 @@ class FreshRSS_EntryDAOPGSQL extends FreshRSS_EntryDAOSQLite {
 		return false;
 	}
 
+	public function commitNewEntries() {
+		$sql = 'DO $$
+DECLARE
+maxrank bigint := (SELECT MAX(id) FROM `' . $this->prefix . 'entrytmp`);
+rank bigint := (SELECT maxrank - COUNT(*) FROM `' . $this->prefix . 'entrytmp`);
+BEGIN
+	INSERT INTO `' . $this->prefix . 'entry` (id, guid, title, author, content, link, date, `lastSeen`, hash, is_read, is_favorite, id_feed, tags)
+		(SELECT rank + row_number() OVER(ORDER BY date) AS id, guid, title, author, content, link, date, `lastSeen`, hash, is_read, is_favorite, id_feed, tags FROM `' . $this->prefix . 'entrytmp` ORDER BY date);
+	DELETE FROM `' . $this->prefix . 'entrytmp` WHERE id <= maxrank;
+END $$;';
+		$hadTransaction = $this->bd->inTransaction();
+		if (!$hadTransaction) {
+			$this->bd->beginTransaction();
+		}
+		$result = $this->bd->exec($sql) !== false;
+		if (!$hadTransaction) {
+			$this->bd->commit();
+		}
+		return $result;
+	}
+
 	public function size($all = true) {
 		$db = FreshRSS_Context::$system_conf->db;
 		$sql = 'SELECT pg_size_pretty(pg_database_size(?))';