MDL-30761 make it work under Oracle. To revisit after MDL-29765 is done.

diff --git a/lib/accesslib.php b/lib/accesslib.php
index 43fde86..b7c0c94 100644 (file)
--- a/lib/accesslib.php
+++ b/lib/accesslib.php
@@ -1604,7 +1604,9 @@ function role_assign($roleid, $userid, $contextid, $component = '', $itemid = 0,
         $timemodified = time();
     }
 
-/// Check for existing entry
+    // Check for existing entry
+    // TODO: Revisit this sql_empty() use once Oracle bindings are improved. MDL-29765
+    $component = ($component === '') ? $DB->sql_empty() : $component;
     $ras = $DB->get_records('role_assignments', array('roleid'=>$roleid, 'contextid'=>$context->id, 'userid'=>$userid, 'component'=>$component, 'itemid'=>$itemid), 'id');
 
     if ($ras) {
@@ -1717,6 +1719,10 @@ function role_unassign_all(array $params, $subcontexts = false, $includemanual =
         }
     }
 
+    // TODO: Revisit this sql_empty() use once Oracle bindings are improved. MDL-29765
+    if (isset($params['component'])) {
+        $params['component'] = ($params['component'] === '') ? $DB->sql_empty() : $params['component'];
+    }
     $ras = $DB->get_records('role_assignments', $params);
     foreach($ras as $ra) {
         $DB->delete_records('role_assignments', array('id'=>$ra->id));