From aa44ce6e9703ab15bb5270251358fb756a347f17 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Wed, 5 Jun 2013 18:54:26 +0200
Subject: Add optional argument to now() for simple interval calculations on
 SQL-side

---
 program/lib/Roundcube/rcube_db_pgsql.php | 21 ++++++++++++++++++---
 1 file changed, 18 insertions(+), 3 deletions(-)

(limited to 'program/lib/Roundcube/rcube_db_pgsql.php')

diff --git a/program/lib/Roundcube/rcube_db_pgsql.php b/program/lib/Roundcube/rcube_db_pgsql.php
index 90adf4bad..984dd57a1 100644
--- a/program/lib/Roundcube/rcube_db_pgsql.php
+++ b/program/lib/Roundcube/rcube_db_pgsql.php
@@ -75,9 +75,6 @@ class rcube_db_pgsql extends rcube_db
     /**
      * Return SQL statement to convert a field value into a unix timestamp
      *
-     * This method is deprecated and should not be used anymore due to limitations
-     * of timestamp functions in Mysql (year 2038 problem)
-     *
      * @param string $field Field name
      *
      * @return string SQL statement to use in query
@@ -88,6 +85,24 @@ class rcube_db_pgsql extends rcube_db
         return "EXTRACT (EPOCH FROM $field)";
     }
 
+    /**
+     * Return SQL function for current time and date
+     *
+     * @param int $interval Optional interval (in seconds) to add/subtract
+     *
+     * @return string SQL function to use in query
+     */
+    public function now($interval = 0)
+    {
+        if ($interval) {
+            $add = ' ' . ($interval > 0 ? '+' : '-') . " interval '";
+            $add .= $interval > 0 ? intval($interval) : intval($interval) * -1;
+            $add .= " seconds'";
+        }
+
+        return "now()" . $add;
+    }
+
     /**
      * Return SQL statement for case insensitive LIKE
      *
-- 
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