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authorJoas Schilling <nickvergessen@gmx.de>2012-12-20 22:51:38 +0100
committerJoas Schilling <nickvergessen@gmx.de>2012-12-20 22:51:38 +0100
commite34b8ed094affdaedbf457406c98b29c125e5d8b (patch)
tree7cc51ba4ead71cb48a76747770edf622f8fe85f9 /phpBB/includes/functions_database_helper.php
parent70a409d4b5411bf9e50a70d1cf3855b686304bbe (diff)
parentd11829567603e6ac37170b919efc4659b2be20cb (diff)
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Merge branch 'develop' of https://github.com/phpbb/phpbb3 into feature/softdelete-1-permission-rebase
* 'develop' of https://github.com/phpbb/phpbb3: (544 commits) [feature/events] Fix improperly named event in documentation [feature/events] Fix alphabetization of events [feature/events] Put events in alphabetical order [feature/events] Make EVENTS.md lowercase [ticket/11285] Use more granularity in dependency checks in compress test [ticket/10880] The m_approve permisson no longer implies f_noapprove. [ticket/10803] Show failure message until user dismisses it [ticket/10954] Add missing semi-colon [ticket/10954] Make sure to mark subforums unread and add small fixes [feature/events] Use ` to escape HTML tags in markdown [feature/events] Remove HTML tags from markdown so they don't get parsed [ticket/10954] Miscellaneous coding fixes [feature/events] Remove extraneous space [feature/events] Add markdown template event documentation file [feature/events] forumlist_body_last_post_title_after -> _prepend (subsilver2) [feature/events] Fix overall_footer_end -> overall_footer_after (subsilver2) [feature/events] Fix typo in event name [ticket/10763] Use self when calling get_extension() in filespec class [feature/events] Fix more subsilver2 events [feature/events] Fix some subsilver2 events ... Conflicts: phpBB/install/database_update.php phpBB/posting.php
Diffstat (limited to 'phpBB/includes/functions_database_helper.php')
-rw-r--r--phpBB/includes/functions_database_helper.php206
1 files changed, 206 insertions, 0 deletions
diff --git a/phpBB/includes/functions_database_helper.php b/phpBB/includes/functions_database_helper.php
new file mode 100644
index 0000000000..1b508e6a02
--- /dev/null
+++ b/phpBB/includes/functions_database_helper.php
@@ -0,0 +1,206 @@
+<?php
+/**
+*
+* @package phpBB3
+* @copyright (c) 2012 phpBB Group
+* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
+*
+*/
+
+/**
+* @ignore
+*/
+if (!defined('IN_PHPBB'))
+{
+ exit;
+}
+
+/**
+* Updates rows in given table from a set of values to a new value.
+* If this results in rows violating uniqueness constraints, the duplicate
+* rows are eliminated.
+*
+* The only supported table is bookmarks.
+*
+* @param phpbb_db_driver $db Database object
+* @param string $table Table on which to perform the update
+* @param string $column Column whose values to change
+* @param array $from_values An array of values that should be changed
+* @param int $to_value The new value
+* @return null
+*/
+function phpbb_update_rows_avoiding_duplicates(phpbb_db_driver $db, $table, $column, $from_values, $to_value)
+{
+ $sql = "SELECT $column, user_id
+ FROM $table
+ WHERE " . $db->sql_in_set($column, $from_values);
+ $result = $db->sql_query($sql);
+
+ $old_user_ids = array();
+ while ($row = $db->sql_fetchrow($result))
+ {
+ $old_user_ids[$row[$column]][] = (int) $row['user_id'];
+ }
+ $db->sql_freeresult($result);
+
+ $sql = "SELECT $column, user_id
+ FROM $table
+ WHERE $column = " . (int) $to_value;
+ $result = $db->sql_query($sql);
+
+ $new_user_ids = array();
+ while ($row = $db->sql_fetchrow($result))
+ {
+ $new_user_ids[$row[$column]][] = (int) $row['user_id'];
+ }
+ $db->sql_freeresult($result);
+
+ $queries = array();
+ foreach ($from_values as $from_value)
+ {
+ if (!isset($old_user_ids[$from_value]))
+ {
+ continue;
+ }
+ if (empty($new_user_ids))
+ {
+ $sql = "UPDATE $table
+ SET $column = " . (int) $to_value . "
+ WHERE $column = '" . $db->sql_escape($from_value) . "'";
+ $queries[] = $sql;
+ }
+ else
+ {
+ $different_user_ids = array_diff($old_user_ids[$from_value], $new_user_ids[$to_value]);
+ if (!empty($different_user_ids))
+ {
+ $sql = "UPDATE $table
+ SET $column = " . (int) $to_value . "
+ WHERE $column = '" . $db->sql_escape($from_value) . "'
+ AND " . $db->sql_in_set('user_id', $different_user_ids);
+ $queries[] = $sql;
+ }
+ }
+ }
+
+ if (!empty($queries))
+ {
+ $db->sql_transaction('begin');
+
+ foreach ($queries as $sql)
+ {
+ $db->sql_query($sql);
+ }
+
+ $sql = "DELETE FROM $table
+ WHERE " . $db->sql_in_set($column, $from_values);
+ $db->sql_query($sql);
+
+ $db->sql_transaction('commit');
+ }
+}
+
+/**
+* Updates rows in given table from a set of values to a new value.
+* If this results in rows violating uniqueness constraints, the duplicate
+* rows are merged respecting notify_status (0 takes precedence over 1).
+*
+* The only supported table is topics_watch.
+*
+* @param phpbb_db_driver $db Database object
+* @param string $table Table on which to perform the update
+* @param string $column Column whose values to change
+* @param array $from_values An array of values that should be changed
+* @param int $to_value The new value
+* @return null
+*/
+function phpbb_update_rows_avoiding_duplicates_notify_status(phpbb_db_driver $db, $table, $column, $from_values, $to_value)
+{
+ $sql = "SELECT $column, user_id, notify_status
+ FROM $table
+ WHERE " . $db->sql_in_set($column, $from_values);
+ $result = $db->sql_query($sql);
+
+ $old_user_ids = array();
+ while ($row = $db->sql_fetchrow($result))
+ {
+ $old_user_ids[(int) $row['notify_status']][$row[$column]][] = (int) $row['user_id'];
+ }
+ $db->sql_freeresult($result);
+
+ $sql = "SELECT $column, user_id
+ FROM $table
+ WHERE $column = " . (int) $to_value;
+ $result = $db->sql_query($sql);
+
+ $new_user_ids = array();
+ while ($row = $db->sql_fetchrow($result))
+ {
+ $new_user_ids[$row[$column]][] = (int) $row['user_id'];
+ }
+ $db->sql_freeresult($result);
+
+ $queries = array();
+ $extra_updates = array(
+ 0 => 'notify_status = 0',
+ 1 => '',
+ );
+ foreach ($from_values as $from_value)
+ {
+ foreach ($extra_updates as $notify_status => $extra_update)
+ {
+ if (!isset($old_user_ids[$notify_status][$from_value]))
+ {
+ continue;
+ }
+ if (empty($new_user_ids))
+ {
+ $sql = "UPDATE $table
+ SET $column = " . (int) $to_value . "
+ WHERE $column = '" . $db->sql_escape($from_value) . "'";
+ $queries[] = $sql;
+ }
+ else
+ {
+ $different_user_ids = array_diff($old_user_ids[$notify_status][$from_value], $new_user_ids[$to_value]);
+ if (!empty($different_user_ids))
+ {
+ $sql = "UPDATE $table
+ SET $column = " . (int) $to_value . "
+ WHERE $column = '" . $db->sql_escape($from_value) . "'
+ AND " . $db->sql_in_set('user_id', $different_user_ids);
+ $queries[] = $sql;
+ }
+
+ if ($extra_update)
+ {
+ $same_user_ids = array_diff($old_user_ids[$notify_status][$from_value], $different_user_ids);
+ if (!empty($same_user_ids))
+ {
+ $sql = "UPDATE $table
+ SET $extra_update
+ WHERE $column = '" . (int) $to_value . "'
+ AND " . $db->sql_in_set('user_id', $same_user_ids);
+ $queries[] = $sql;
+ }
+ }
+ }
+ }
+ }
+
+ if (!empty($queries))
+ {
+ $db->sql_transaction('begin');
+
+ foreach ($queries as $sql)
+ {
+ $db->sql_query($sql);
+ }
+
+ $sql = "DELETE FROM $table
+ WHERE " . $db->sql_in_set($column, $from_values);
+ $db->sql_query($sql);
+
+ $db->sql_transaction('commit');
+ }
+}
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