From 9251b26fe822e9d61d399ec181f6a823d6b27382 Mon Sep 17 00:00:00 2001
From: toyomoyo <toyomoyo>
Date: Fri, 23 Mar 2007 07:21:27 +0000
Subject: [PATCH] merged fix for MDL-9016, clear context cache after
 remove_course_contents()

---
 lib/accesslib.php | 9 +++++++++
 lib/moodlelib.php | 7 ++++++-
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/lib/accesslib.php b/lib/accesslib.php
index 9f4c2eebe6..6a9648f4f7 100755
--- a/lib/accesslib.php
+++ b/lib/accesslib.php
@@ -1792,6 +1792,15 @@ function get_context_instance($contextlevel=NULL, $instance=0) {
     static $allowed_contexts = array(CONTEXT_SYSTEM, CONTEXT_PERSONAL, CONTEXT_USER, CONTEXT_COURSECAT, CONTEXT_COURSE, CONTEXT_GROUP, CONTEXT_MODULE, CONTEXT_BLOCK);
 
     // Yu: Separating site and site course context - removed CONTEXT_COURSE override when SITEID
+    
+    // fix for MDL-9016
+    if ($contextlevel == 'clearcache') {
+        // Clear ALL cache
+        $context_cache = array();
+        $context_cache_id = array();
+        $CONTEXT = '';       
+        return false;
+    }
 
 /// If no level is supplied then return the current global context if there is one
     if (empty($contextlevel)) {
diff --git a/lib/moodlelib.php b/lib/moodlelib.php
index d8cc0bf7f4..dced08052d 100644
--- a/lib/moodlelib.php
+++ b/lib/moodlelib.php
@@ -3076,7 +3076,12 @@ function remove_course_contents($courseid, $showfeedback=true) {
     if ($courseid != SITEID) {
         delete_context(CONTEXT_COURSE, $course->id);
     }
-
+    
+    // fix for MDL-9016
+    // clear the cache because the course context is deleted, and
+    // we don't want to write assignment, overrides and context_rel table
+    // with this old context id!
+    get_context_instance('clearcache');
     return $result;
 }
 
-- 
2.39.5