MDL-63531 privacy: Update to comments provider to simplfy sql.

This updates the get_users_in_context_from_sql query to include
the context id to simplify the calls made from other components.

comment/classes/privacy/provider.php

@@ -235,17 +235,29 @@ class provider implements \core_privacy\local\metadata\provider, \core_privacy\l
      * @param   string      $alias An alias prefix to use for comment selects to avoid interference with your own sql.
      * @param   string      $component The component to check.
      * @param   string      $area The comment area to check.
+     * @param   int         $contextid The context id.
      * @param   string      $insql The SQL to use in a sub-select for the itemid query.
      * @param   array       $params The params required for the insql.
      */
     public static function get_users_in_context_from_sql(
-            userlist $userlist, string $alias, string $component, string $area, string $insql, $params) {
+                userlist $userlist, string $alias, string $component, string $area, int $contextid = null, string $insql = '',
+                array $params = []) {
+
+        if ($insql != '') {
+            $insql = "AND {$alias}.itemid {$insql}";
+        }
+        $contextsql = '';
+        if (isset($contextid)) {
+            $contextsql = "AND {$alias}.contextid = :{$alias}contextid";
+            $params["{$alias}contextid"] = $contextid;
+        }
+
         // Comment authors.
         $sql = "SELECT {$alias}.userid
                   FROM {comments} {$alias}
                  WHERE {$alias}.component = :{$alias}component
                    AND {$alias}.commentarea = :{$alias}commentarea
-                   AND {$alias}.itemid IN ({$insql})";
+                   $contextsql $insql";
 
         $params["{$alias}component"] = $component;
         $params["{$alias}commentarea"] = $area;

mod/assign/submission/comments/classes/privacy/provider.php

@@ -102,15 +102,8 @@ class provider implements metadataprovider,
         if ($context->contextlevel != CONTEXT_MODULE) {
             return;
         }
-        $sql = "SELECT userid
+        comments_provider::get_users_in_context_from_sql($userlist, 'c', 'assignsubmission_comments', 'submission_comments',
-                  FROM {comments}
+                $context->id);
-                 WHERE contextid = :contextid
-                   AND component = :component
-                   AND commentarea = :commentarea";
-        $userlist->add_from_sql('userid', $sql, [
-                'contextid' => $context->id,
-                'component' => 'assignsubmission_comments',
-                'commentarea' => 'submission_comments']);
     }
 
     /**

mod/data/classes/privacy/provider.php

@@ -162,22 +162,7 @@ class provider implements
         $userlist->add_from_sql('userid', $sql, $params);
 
         // Find users with comments.
-        $sql = "SELECT dr.id
+        \core_comment\privacy\provider::get_users_in_context_from_sql($userlist, 'com', 'mod_data', 'database_entry', $context->id);
-                  FROM {context} c
-                  JOIN {course_modules} cm ON cm.id = c.instanceid AND c.contextlevel = :contextlevel
-                  JOIN {modules} m ON m.id = cm.module AND m.name = :modname
-                  JOIN {data} d ON d.id = cm.instance
-                  JOIN {data_records} dr ON dr.dataid = d.id
-                 WHERE c.id = :contextid";
-
-        $params = [
-            'modname'       => 'data',
-            'contextid'     => $context->id,
-            'contextlevel'  => CONTEXT_MODULE,
-        ];
-
-        \core_comment\privacy\provider::get_users_in_context_from_sql(
-            $userlist, 'com', 'mod_data', 'database_entry', $sql, $params);
 
         // Find users with ratings.
         $sql = "SELECT dr.id

mod/glossary/classes/privacy/provider.php

@@ -136,22 +136,8 @@ class provider implements
         $userlist->add_from_sql('userid', $sql, $params);
 
         // Find users with glossary comments.
-        $sql = "SELECT ge.id
+        \core_comment\privacy\provider::get_users_in_context_from_sql($userlist, 'com', 'mod_glossary', 'glossary_entry',
-                  FROM {context} c
+                $context->id);
-                  JOIN {course_modules} cm ON cm.id = c.instanceid AND c.contextlevel = :contextlevel
-                  JOIN {modules} m ON m.id = cm.module AND m.name = :modname
-                  JOIN {glossary} g ON g.id = cm.instance
-                  JOIN {glossary_entries} ge ON ge.glossaryid = g.id
-                 WHERE c.id = :contextid";
-
-        $params = [
-            'contextid' => $context->id,
-            'contextlevel' => CONTEXT_MODULE,
-            'modname' => 'glossary',
-        ];
-
-        \core_comment\privacy\provider::get_users_in_context_from_sql(
-            $userlist, 'com', 'mod_glossary', 'glossary_entry', $sql, $params);
 
         // Find users with glossary ratings.
         $sql = "SELECT ge.id

mod/wiki/classes/privacy/provider.php

@@ -184,17 +184,7 @@ class provider implements
             WHERE ctx.id = :contextid";
 
         $userlist->add_from_sql('userid', $sql, $params);
-
+        \core_comment\privacy\provider::get_users_in_context_from_sql($userlist, 'com', 'mod_wiki', 'wiki_page', $context->id);
-        $sql = "
-          SELECT p.id
-            FROM {modules} m
-            JOIN {course_modules} cm ON cm.module = m.id AND m.name = :modname
-            JOIN {context} ctx ON ctx.instanceid = cm.id AND ctx.contextlevel = :contextlevel
-            JOIN {wiki_subwikis} s ON cm.instance = s.wikiid
-            JOIN {wiki_pages} p ON p.subwikiid = s.id
-            WHERE ctx.id = :contextid";
-
-        \core_comment\privacy\provider::get_users_in_context_from_sql($userlist, 'com', 'mod_wiki', 'wiki_page', $sql, $params);
     }
 
     /**