From 4fffb261dd9bb14b9015ae11e169ab57201a3503 Mon Sep 17 00:00:00 2001
From: Greg Sabino Mullane <greg@users.mediawiki.org>
Date: Mon, 30 Jul 2007 14:10:42 +0000
Subject: [PATCH] Add function to check if function-based indexes are supported
 by the backend DB.

---
 includes/Database.php         | 7 +++++++
 includes/DatabasePostgres.php | 3 +++
 2 files changed, 10 insertions(+)

diff --git a/includes/Database.php b/includes/Database.php
index bbf56e8706..ebb4b2541a 100644
--- a/includes/Database.php
+++ b/includes/Database.php
@@ -448,6 +448,13 @@ class Database {
 		return false;
 	}
 
+	/**
+	 * Returns true if this database can use functional indexes
+	 */
+	function functionalIndexes() {
+		return false;
+	}
+
 	/**#@+
 	 * Get function
 	 */
diff --git a/includes/DatabasePostgres.php b/includes/DatabasePostgres.php
index 947d5264f1..7f738a4046 100644
--- a/includes/DatabasePostgres.php
+++ b/includes/DatabasePostgres.php
@@ -105,6 +105,9 @@ class DatabasePostgres extends Database {
 	function searchableIPs() {
 		return true;
 	}
+	function functionalIndexes() {
+		return true;
+	}
 
 	static function newFromParams( $server, $user, $password, $dbName, $failFunction = false, $flags = 0)
 	{
-- 
2.20.1