From cb08efb14147370c77500a221fccfa22531488e1 Mon Sep 17 00:00:00 2001
From: monishdeb <monish.deb@webaccessglobal.com>
Date: Mon, 2 Feb 2015 18:13:07 +0530
Subject: [PATCH] CRM-15728, query improvement

----------------------------------------
* CRM-15728: Improve Scheduled Reminders for membership renewals
  https://issues.civicrm.org/jira/browse/CRM-15728
---
 CRM/Core/BAO/ActionSchedule.php               | 23 ++++---------------
 .../CRM/Core/BAO/ActionScheduleTest.php       |  5 ----
 2 files changed, 4 insertions(+), 24 deletions(-)

diff --git a/CRM/Core/BAO/ActionSchedule.php b/CRM/Core/BAO/ActionSchedule.php
index 3786a5409f..458618cce6 100755
--- a/CRM/Core/BAO/ActionSchedule.php
+++ b/CRM/Core/BAO/ActionSchedule.php
@@ -1280,31 +1280,16 @@ INSERT INTO civicrm_action_log ({$selectColumns})
  LEFT JOIN {$reminderJoinClause}
 {$whereClause} {$limitWhereClause} {$notINClause} AND {$dateClause} AND
  reminder.action_date_time IS NOT NULL AND
- (reminder.reference_date IS NOT NULL AND reminder.reference_date != {$dateField})
-LIMIT 0,1
-";
-
-        // As per the usage of UNION clause above we always INSERT a new reminder if reference_date (RD)
-        // got outdated or mismatches to start_action_date criteria so we need to update RD with actual
-        // start_action_date of already sent reminder, so to prevent redeundancy in sending new reminder
-        // due to above INSERT-UNION query
-        $updateQuery = "UPDATE civicrm_action_log reminder
- INNER JOIN {$mapping->entity} e ON e.id = reminder.entity_id AND
- reminder.reference_date IS NOT NULL AND reminder.action_date_time IS NOT NULL
- INNER JOIN civicrm_action_log new_reminder ON
-   new_reminder.action_schedule_id = reminder.action_schedule_id AND
-   new_reminder.reference_date = {$dateField} AND
-   new_reminder.action_date_time IS NULL
- SET reminder.reference_date = {$dateField}
- WHERE reminder.action_schedule_id = %1 AND reminder.reference_date IS NOT NULL AND reminder.reference_date != {$dateField}
+ reminder.reference_date IS NOT NULL
+GROUP BY reminder.id, reminder.reference_date
+HAVING reminder.id = MAX(reminder.id) AND reminder.reference_date <> {$dateField}
 ";
       }
 
       CRM_Core_DAO::executeQuery($query, array(1 => array($actionSchedule->id, 'Integer')));
 
-      if (!empty($updateQuery)) {
+      if (!empty($referenceQuery)) {
         CRM_Core_DAO::executeQuery($referenceQuery, array(1 => array($actionSchedule->id, 'Integer')));
-        CRM_Core_DAO::executeQuery($updateQuery, array(1 => array($actionSchedule->id, 'Integer')));
       }
 
       $isSendToAdditionalContacts = (!is_null($limitTo) && $limitTo == 0 && (!empty($addGroup) || !empty($addWhere))) ? TRUE : FALSE;
diff --git a/tests/phpunit/CRM/Core/BAO/ActionScheduleTest.php b/tests/phpunit/CRM/Core/BAO/ActionScheduleTest.php
index 3ff7705a1b..642b4b6bae 100755
--- a/tests/phpunit/CRM/Core/BAO/ActionScheduleTest.php
+++ b/tests/phpunit/CRM/Core/BAO/ActionScheduleTest.php
@@ -951,11 +951,6 @@ class CRM_Core_BAO_ActionScheduleTest extends CiviUnitTestCase {
         'recipients' => array(array('member@example.com')),
       ),
     ));
-
-    //To check whether the reference date is being changed to new join_date
-    $this->assertEquals('2012-03-29',
-      CRM_Core_DAO::getFieldValue('CRM_Core_DAO_ActionLog', $membership->contact_id, 'reference_date', 'contact_id', TRUE)
-    );
   }
 
   public function testMembershipOnMultipleReminder() {
-- 
2.25.1