code:
<?php

/**
 * Table Definition for group_inbox
 */
class Group_inbox extends Managed_DataObject
{
    ###START_AUTOCODE
    /* the code below is auto generated do not remove the above tag */

    public $__table = 'group_inbox';                     // table name
    public $group_id;                        // int(4)  primary_key not_null
    public $notice_id;                       // int(4)  primary_key not_null
    public $created;                         // datetime()   not_null default_0000-00-00%2000%3A00%3A00

    /* the code above is auto generated do not remove the tag below */
    ###END_AUTOCODE

    public static function schemaDef()
    {
        return array(
            'description' => 'Many-many table listing notices posted to a given group, or which groups a given notice was posted to.',
            'fields' => array(
                'group_id' => array('type' => 'int', 'not null' => true, 'description' => 'group receiving the message'),
                'notice_id' => array('type' => 'int', 'not null' => true, 'description' => 'notice received'),
                'created' => array('type' => 'datetime', 'not null' => true, 'default' => '0000-00-00 00:00:00', 'description' => 'date the notice was created'),
            ),
            'primary key' => array('group_id', 'notice_id'),
            'foreign keys' => array(
                'group_inbox_group_id_fkey' => array('user_group', array('group_id' => 'id')),
                'group_inbox_notice_id_fkey' => array('notice', array('notice_id' => 'id')),
            ),
            'indexes' => array(
                'group_inbox_created_idx' => array('created'),
                'group_inbox_notice_id_idx' => array('notice_id'),
                'group_inbox_group_id_created_notice_id_idx' => array('group_id', 'created', 'notice_id'),
            ),
        );
    }
}


code:
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social.  If not, see <http://www.gnu.org/licenses/>.

defined('GNUSOCIAL') || die();

/**
 * Table Definition for request_queue
 */
require_once INSTALLDIR.'/classes/Memcached_DataObject.php';

class Group_join_queue extends Managed_DataObject
{
    ###START_AUTOCODE
    /* the code below is auto generated do not remove the above tag */

    public $__table = 'group_join_queue';       // table name
    public $profile_id;
    public $group_id;
    public $created;

    /* the code above is auto generated do not remove the tag below */
    ###END_AUTOCODE

    public static function schemaDef()
    {
        return array(
            'description' => 'Holder for group join requests awaiting moderation.',
            'fields' => array(
                'profile_id' => array('type' => 'int', 'not null' => true, 'description' => 'remote or local profile making the request'),
                'group_id' => array('type' => 'int', 'not null' => true, 'description' => 'remote or local group to join, if any'),
                'created' => array('type' => 'datetime', 'not null' => true, 'default' => '0000-00-00 00:00:00', 'description' => 'date this record was created'),
            ),
            'primary key' => array('profile_id', 'group_id'),
            'indexes' => array(
                'group_join_queue_profile_id_created_idx' => array('profile_id', 'created'),
                'group_join_queue_group_id_created_idx' => array('group_id', 'created'),
            ),
            'foreign keys' => array(
                'group_join_queue_profile_id_fkey' => array('profile', array('profile_id' => 'id')),
                'group_join_queue_group_id_fkey' => array('user_group', array('group_id' => 'id')),
            )
        );
    }

    public static function saveNew(Profile $profile, User_group $group)
    {
        $rq = new Group_join_queue();
        $rq->profile_id = $profile->id;
        $rq->group_id = $group->id;
        $rq->created = common_sql_now();
        $rq->insert();
        return $rq;
    }

    public function getMember()
    {
        $member = Profile::getKV('id', $this->profile_id);

        if (empty($member)) {
            // TRANS: Exception thrown providing an invalid profile ID.
            // TRANS: %s is the invalid profile ID.
            throw new Exception(sprintf(_('Profile ID %s is invalid.'), $this->profile_id));
        }

        return $member;
    }

    public function getGroup()
    {
        $group  = User_group::getKV('id', $this->group_id);

        if (empty($group)) {
            // TRANS: Exception thrown providing an invalid group ID.
            // TRANS: %s is the invalid group ID.
            throw new Exception(sprintf(_('Group ID %s is invalid.'), $this->group_id));
        }

        return $group;
    }

    /**
     * Abort the pending group join...
     */
    public function abort()
    {
        $profile = $this->getMember();
        $group = $this->getGroup();

        if (Event::handle('StartCancelJoinGroup', array($profile, $group))) {
            $this->delete();
            Event::handle('EndCancelJoinGroup', array($profile, $group));
        }
    }

    /**
     * Complete a pending group join...
     *
     * @return Group_member object on success
     */
    public function complete()
    {
        $join = null;
        $profile = $this->getMember();
        $group = $this->getGroup();
        if (Event::handle('StartJoinGroup', array($profile, $group))) {
            $join = Group_member::join($group->id, $profile->id);
            $this->delete();
            Event::handle('EndJoinGroup', array($profile, $group));
        }
        if (!$join) {
            throw new Exception('Internal error: group join failed.');
        }
        $join->notify();
        return $join;
    }

    /**
     * Send notifications via email etc to group administrators about
     * this exciting new pending moderation queue item!
     */
    public function notify()
    {
        $joiner = Profile::getKV('id', $this->profile_id);
        $group = User_group::getKV('id', $this->group_id);
        mail_notify_group_join_pending($group, $joiner);
    }
}

repo_name: suraj/sloth

license: mit


code:
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social.  If not, see <http://www.gnu.org/licenses/>.

defined('GNUSOCIAL') || die();

/**
 * Table Definition for group_member
 */

class Group_member extends Managed_DataObject
{
    ###START_AUTOCODE
    /* the code below is auto generated do not remove the above tag */

    public $__table = 'group_member';                    // table name
    public $group_id;                        // int(4)  primary_key not_null
    public $profile_id;                      // int(4)  primary_key not_null
    public $is_admin;                        // bool    default_false
    public $uri;                             // varchar(191)   not 255 because utf8mb4 takes more space
    public $created;                         // datetime()   not_null default_0000-00-00%2000%3A00%3A00
    public $modified;                        // datetime()   not_null default_CURRENT_TIMESTAMP

    /* the code above is auto generated do not remove the tag below */
    ###END_AUTOCODE

    public static function schemaDef()
    {
        return array(
            'fields' => array(
                'group_id' => array('type' => 'int', 'not null' => true, 'description' => 'foreign key to user_group'),
                'profile_id' => array('type' => 'int', 'not null' => true, 'description' => 'foreign key to profile table'),
                'is_admin' => array('type' => 'bool', 'default' => false, 'description' => 'is this user an admin?'),
                'uri' => array('type' => 'varchar', 'length' => 191, 'description' => 'universal identifier'),
                'created' => array('type' => 'datetime', 'not null' => true, 'default' => '0000-00-00 00:00:00', 'description' => 'date this record was created'),
                'modified' => array('type' => 'datetime', 'not null' => true, 'default' => 'CURRENT_TIMESTAMP', 'description' => 'date this record was modified'),
            ),
            'primary key' => array('group_id', 'profile_id'),
            'unique keys' => array(
                'group_member_uri_key' => array('uri'),
            ),
            'foreign keys' => array(
                'group_member_group_id_fkey' => array('user_group', array('group_id' => 'id')),
                'group_member_profile_id_fkey' => array('profile', array('profile_id' => 'id')),
            ),
            'indexes' => array(
                // @fixme probably we want a (profile_id, created) index here?
                'group_member_profile_id_idx' => array('profile_id'),
                'group_member_created_idx' => array('created'),
                'group_member_profile_id_created_idx' => array('profile_id', 'created'),
                'group_member_group_id_created_idx' => array('group_id', 'created'),
            ),
        );
    }

    /**
     * Method to add a user to a group.
     * In most cases, you should call Profile->joinGroup() instead.
     *
     * @param integer $group_id   Group to add to
     * @param integer $profile_id Profile being added
     *
     * @return Group_member new membership object
     */

    public static function join($group_id, $profile_id)
    {
        $member = new Group_member();

        $member->group_id   = $group_id;
        $member->profile_id = $profile_id;
        $member->created    = common_sql_now();
        $member->uri        = self::newUri(
            Profile::getByID($profile_id),
            User_group::getByID($group_id),
            $member->created
        );

        $result = $member->insert();

        if (!$result) {
            common_log_db_error($member, 'INSERT', __FILE__);
            // TRANS: Exception thrown when joining a group fails.
            throw new Exception(_("Group join failed."));
        }

        return $member;
    }

    public static function leave($group_id, $profile_id)
    {
        $member = Group_member::pkeyGet(array('group_id' => $group_id,
                                              'profile_id' => $profile_id));

        if (empty($member)) {
            // TRANS: Exception thrown when trying to leave a group the user is not a member of.
            throw new Exception(_("Not part of group."));
        }

        $result = $member->delete();

        if (!$result) {
            common_log_db_error($member, 'INSERT', __FILE__);
            // TRANS: Exception thrown when trying to leave a group fails.
            throw new Exception(_("Group leave failed."));
        }

        return true;
    }

    public function getMember()
    {
        $member = Profile::getKV('id', $this->profile_id);

        if (empty($member)) {
            // TRANS: Exception thrown providing an invalid profile ID.
            // TRANS: %s is the invalid profile ID.
            throw new Exception(sprintf(_("Profile ID %s is invalid."), $this->profile_id));
        }

        return $member;
    }

    public function getGroup()
    {
        $group  = User_group::getKV('id', $this->group_id);

        if (empty($group)) {
            // TRANS: Exception thrown providing an invalid group ID.
            // TRANS: %s is the invalid group ID.
            throw new Exception(sprintf(_('Group ID %s is invalid.'), $this->group_id));
        }

        return $group;
    }

    /**
     * Get stream of memberships by member
     *
     * @param integer $memberId profile ID of the member to fetch for
     * @param integer $offset   offset from start of stream to get
     * @param integer $limit    number of memberships to get
     *
     * @return Group_member stream of memberships, use fetch() to iterate
     */

    public static function byMember($memberId, $offset = 0, $limit = GROUPS_PER_PAGE)
    {
        $membership = new Group_member();

        $membership->profile_id = $memberId;

        $membership->orderBy('created DESC');

        $membership->limit($offset, $limit);

        $membership->find();

        return $membership;
    }

    public function asActivity()
    {
        $member = $this->getMember();

        if (!$member) {
            throw new Exception("No such member: " . $this->profile_id);
        }

        $group  = $this->getGroup();

        if (!$group) {
            throw new Exception("No such group: " . $this->group_id);
        }

        $act = new Activity();

        $act->id = $this->getUri();

        $act->actor     = $member->asActivityObject();
        $act->verb      = ActivityVerb::JOIN;
        $act->objects[] = ActivityObject::fromGroup($group);

        $act->time  = strtotime($this->created);
        // TRANS: Activity title.
        $act->title = _("Join");

        // TRANS: Success message for subscribe to group attempt through OStatus.
        // TRANS: %1$s is the member name, %2$s is the subscribed group's name.
        $act->content = sprintf(
            _('%1$s has joined group %2$s.'),
            $member->getBestName(),
            $group->getBestName()
        );

        $url = common_local_url(
            'AtomPubShowMembership',
            [
                'profile' => $member->id,
                'group'   => $group->id,
            ]
        );

        $act->selfLink = $url;
        $act->editLink = $url;

        return $act;
    }

    /**
     * Send notifications via email etc to group administrators about
     * this exciting new membership!
     */
    public function notify()
    {
        mail_notify_group_join($this->getGroup(), $this->getMember());
    }

    public function getUri()
    {
        return $this->uri ?: self::newUri($this->getMember(), $this->getGroup()->getProfile(), $this->created);
    }
}


code:
<?php
/**
 * Table Definition for invitation
 */
require_once INSTALLDIR.'/classes/Memcached_DataObject.php';

class Invitation extends Managed_DataObject
{
    ###START_AUTOCODE
    /* the code below is auto generated do not remove the above tag */

    public $__table = 'invitation';                      // table name
    public $code;                            // varchar(32)  primary_key not_null
    public $user_id;                         // int(4)   not_null
    public $address;                         // varchar(191)  multiple_key not_null   not 255 because utf8mb4 takes more space
    public $address_type;                    // varchar(8)  multiple_key not_null
    public $registered_user_id;              // int(4)   not_null
    public $created;                         // datetime()   not_null default_0000-00-00%2000%3A00%3A00

    /* the code above is auto generated do not remove the tag below */
    ###END_AUTOCODE

    function convert($user)
    {
        $orig = clone($this);
        $this->registered_user_id = $user->id;
        return $this->update($orig);
    }

    public static function schemaDef()
    {
        return array(

            'fields' => array(
                'code' => array('type' => 'varchar', 'length' => 32, 'not null' => true, 'description' => 'random code for an invitation'),
                'user_id' => array('type' => 'int', 'not null' => true, 'description' => 'who sent the invitation'),
                'address' => array('type' => 'varchar', 'length' => 191, 'not null' => true, 'description' => 'invitation sent to'),
                'address_type' => array('type' => 'varchar', 'length' => 8, 'not null' => true, 'description' => 'address type ("email", "xmpp", "sms")'),
                'created' => array('type' => 'datetime', 'not null' => true, 'default' => '0000-00-00 00:00:00', 'description' => 'date this record was created'),
                'registered_user_id' => array('type' => 'int', 'not null' => false, 'description' => 'if the invitation is converted, who the new user is'),
            ),
            'primary key' => array('code'),
            'foreign keys' => array(
                'invitation_user_id_fkey' => array('user', array('user_id' => 'id')),
                'invitation_registered_user_id_fkey' => array('user', array('registered_user_id' => 'id')),
            ),
            'indexes' => array(
                'invitation_address_idx' => array('address', 'address_type'),
                'invitation_user_id_idx' => array('user_id'),
                'invitation_registered_user_id_idx' => array('registered_user_id'),
            ),
        );
    }
}


code:
<?php
/**
 * Table Definition for local_group
 */

class Local_group extends Managed_DataObject
{
    ###START_AUTOCODE
    /* the code below is auto generated do not remove the above tag */

    public $__table = 'local_group';                     // table name
    public $group_id;                        // int(4)  primary_key not_null
    public $nickname;                        // varchar(64)  unique_key
    public $created;                         // datetime()   not_null default_0000-00-00%2000%3A00%3A00
    public $modified;                        // datetime()   not_null default_CURRENT_TIMESTAMP

    /* the code above is auto generated do not remove the tag below */
    ###END_AUTOCODE

    public static function schemaDef()
    {
        return array(
            'description' => 'Record for a user group on the local site, with some additional info not in user_group',
            'fields' => array(
                'group_id' => array('type' => 'int', 'not null' => true, 'description' => 'group represented'),
                'nickname' => array('type' => 'varchar', 'length' => 64, 'description' => 'group represented'),
                'created' => array('type' => 'datetime', 'not null' => true, 'default' => '0000-00-00 00:00:00', 'description' => 'date this record was created'),
                'modified' => array('type' => 'datetime', 'not null' => true, 'default' => 'CURRENT_TIMESTAMP', 'description' => 'date this record was modified'),
            ),
            'primary key' => array('group_id'),
            'foreign keys' => array(
                'local_group_group_id_fkey' => array('user_group', array('group_id' => 'id')),
            ),
            'unique keys' => array(
                'local_group_nickname_key' => array('nickname'),
            ),
        );
    }

    public function getProfile()
    {
        return $this->getGroup()->getProfile();
    }

    public function getGroup()
    {
        $group = new User_group();
        $group->id = $this->group_id;
        $group->find(true);
        if (!$group instanceof User_group) {
            common_log(LOG_ERR, 'User_group does not exist for Local_group: '.$this->group_id);
            throw new NoSuchGroupException(array('id' => $this->group_id));
        }
        return $group;
    }

    function setNickname($nickname)
    {
        $this->decache();
        $qry = 'UPDATE local_group set nickname = "'.$this->escape($nickname).'" where group_id = ' . $this->group_id;

        $result = $this->query($qry);

        if ($result) {
            $this->nickname = $nickname;
            $this->fixupTimestamps();
            $this->encache();
        } else {
            common_log_db_error($local, 'UPDATE', __FILE__);
            // TRANS: Server exception thrown when updating a local group fails.
            throw new ServerException(_('Could not update local group.'));
        }

        return $result;
    }
}


code:
<?php
/*
 * StatusNet - the distributed open-source microblogging tool
 * Copyright (C) 2009, StatusNet, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.     See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.     If not, see <http://www.gnu.org/licenses/>.
 */

if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }

/**
 * Table Definition for location_namespace
 */

require_once INSTALLDIR.'/classes/Memcached_DataObject.php';

class Location_namespace extends Managed_DataObject
{
    ###START_AUTOCODE
    /* the code below is auto generated do not remove the above tag */

    public $__table = 'location_namespace';              // table name
    public $id;                              // int(4)  primary_key not_null
    public $description;                     // varchar(191)
    public $created;                         // datetime()   not_null default_0000-00-00%2000%3A00%3A00
    public $modified;                        // datetime()   not_null default_CURRENT_TIMESTAMP

    /* the code above is auto generated do not remove the tag below */
    ###END_AUTOCODE

    public static function schemaDef()
    {
        return array(
            'fields' => array(
                'id' => array('type' => 'int', 'not null' => true, 'description' => 'identity for this namespace'),
                'description' => array('type' => 'varchar', 'length' => 191, 'description' => 'description of the namespace'),
                'created' => array('type' => 'datetime', 'not null' => true, 'default' => '0000-00-00 00:00:00', 'description' => 'date the record was created'),
                'modified' => array('type' => 'datetime', 'not null' => true, 'default' => 'CURRENT_TIMESTAMP', 'description' => 'date this record was modified'),
            ),
            'primary key' => array('id'),
        );
    }
}


code:
<?php
/**
 * Table Definition for login_token
 *
 * StatusNet - the distributed open-source microblogging tool
 * Copyright (C) 2009, StatusNet, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }

require_once INSTALLDIR.'/classes/Memcached_DataObject.php';

class Login_token extends Managed_DataObject
{
    ###START_AUTOCODE
    /* the code below is auto generated do not remove the above tag */

    public $__table = 'login_token';         // table name
    public $user_id;                         // int(4)  primary_key not_null
    public $token;                           // char(32)  not_null
    public $created;                         // datetime()   not_null default_0000-00-00%2000%3A00%3A00
    public $modified;                        // datetime()   not_null default_CURRENT_TIMESTAMP

    /* the code above is auto generated do not remove the tag below */
    ###END_AUTOCODE

    public static function schemaDef()
    {
        return array(
            'fields' => array(
                'user_id' => array('type' => 'int', 'not null' => true, 'description' => 'user owning this token'),
                'token' => array('type' => 'char', 'length' => 32, 'not null' => true, 'description' => 'token useable for logging in'),
                'created' => array('type' => 'datetime', 'not null' => true, 'default' => '0000-00-00 00:00:00', 'description' => 'date this record was created'),
                'modified' => array('type' => 'datetime', 'not null' => true, 'default' => 'CURRENT_TIMESTAMP', 'description' => 'date this record was modified'),
            ),
            'primary key' => array('user_id'),
            'foreign keys' => array(
                'login_token_user_id_fkey' => array('user', array('user_id' => 'id')),
            ),
        );
    }

    const TIMEOUT = 120; // seconds after which to timeout the token

    function makeNew($user)
    {
        $login_token = Login_token::getKV('user_id', $user->id);

        if (!empty($login_token)) {
            $login_token->delete();
        }

        $login_token = new Login_token();

        $login_token->user_id = $user->id;
        $login_token->token   = common_random_hexstr(16);
        $login_token->created = common_sql_now();

        $result = $login_token->insert();

        if (!$result) {
            common_log_db_error($login_token, 'INSERT', __FILE__);
            // TRANS: Exception thrown when trying creating a login token failed.
            // TRANS: %s is the user nickname for which token creation failed.
            throw new Exception(sprintf(_('Could not create login token for %s'),
                                                 $user->nickname));
        }

        return $login_token;
    }
}


code:
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Wrapper for Memcached_DataObject which knows its own schema definition.
 * Builds its own damn settings from a schema definition.
 *
 * @package   GNUsocial
 * @author    Brion Vibber <brion@status.net>
 * @copyright 2010 Free Software Foundation, Inc http://www.fsf.org
 * @license   https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
 */

defined('GNUSOCIAL') || die();

abstract class Managed_DataObject extends Memcached_DataObject
{
    /**
     * The One True Thingy that must be defined and declared.
     */
    public static function schemaDef()
    {
        throw new MethodNotImplementedException(__METHOD__);
    }

    /**
     * Get an instance by key
     *
     * @param string $k Key to use to lookup (usually 'id' for this class)
     * @param mixed  $v Value to lookup
     *
     * @return get_called_class() object if found, or null for no hits
     *
     */
    public static function getKV($k, $v = null)
    {
        return parent::getClassKV(get_called_class(), $k, $v);
    }

    /**
     * Get an instance by compound key
     *
     * This is a utility method to get a single instance with a given set of
     * key-value pairs. Usually used for the primary key for a compound key; thus
     * the name.
     *
     * @param array $kv array of key-value mappings
     *
     * @return get_called_class() object if found, or null for no hits
     *
     */
    public static function pkeyGet(array $kv)
    {
        return parent::pkeyGetClass(get_called_class(), $kv);
    }

    public static function pkeyCols()
    {
        return parent::pkeyColsClass(get_called_class());
    }

    /**
     * Get multiple items from the database by key
     *
     * @param string  $keyCol    name of column for key
     * @param array   $keyVals   key values to fetch
     * @param boolean $skipNulls return only non-null results?
     *
     * @return array Array of objects, in order
     */
    public static function multiGet($keyCol, array $keyVals, $skipNulls = true)
    {
        return parent::multiGetClass(get_called_class(), $keyCol, $keyVals, $skipNulls);
    }

    /**
     * Get multiple items from the database by key
     *
     * @param string  $keyCol    name of column for key
     * @param array   $keyVals   key values to fetch
     * @param array   $otherCols Other columns to hold fixed
     *
     * @return array Array mapping $keyVals to objects, or null if not found
     */
    public static function pivotGet($keyCol, array $keyVals, array $otherCols = [])
    {
        return parent::pivotGetClass(get_called_class(), $keyCol, $keyVals, $otherCols);
    }

    /**
     * Get a multi-instance object
     *
     * This is a utility method to get multiple instances with a given set of
     * values for a specific column.
     *
     * @param string $keyCol  key column name
     * @param array  $keyVals array of key values
     *
     * @return get_called_class() object with multiple instances if found,
     *         Exception is thrown when no entries are found.
     *
     */
    public static function listFind($keyCol, array $keyVals)
    {
        return parent::listFindClass(get_called_class(), $keyCol, $keyVals);
    }

    /**
     * Get a multi-instance object separated into an array
     *
     * This is a utility method to get multiple instances with a given set of
     * values for a specific key column. Usually used for the primary key when
     * multiple values are desired. Result is an array.
     *
     * @param string $keyCol  key column name
     * @param array  $keyVals array of key values
     *
     * @return array with an get_called_class() object for each $keyVals entry
     *
     */
    public static function listGet($keyCol, array $keyVals)
    {
        return parent::listGetClass(get_called_class(), $keyCol, $keyVals);
    }

    /**
     * get/set an associative array of table columns
     *
     * @access public
     * @return array (associative)
     */
    public function table()
    {
        $table = static::schemaDef();
        return array_map(array($this, 'columnBitmap'), $table['fields']);
    }

    /**
     * get/set an  array of table primary keys
     *
     * Key info is pulled from the table definition array.
     *
     * @access private
     * @return array
     */
    public function keys()
    {
        return array_keys($this->keyTypes());
    }

    /**
     * Get a sequence key
     *
     * Returns the first serial column defined in the table, if any.
     *
     * @access private
     * @return array (column,use_native,sequence_name)
     */

    public function sequenceKey()
    {
        $table = static::schemaDef();
        foreach ($table['fields'] as $name => $column) {
            if ($column['type'] == 'serial') {
                // We have a serial/autoincrement column.
                // Declare it to be a native sequence!
                return array($name, true, false);
            }
        }

        // No sequence key on this table.
        return array(false, false, false);
    }

    /**
     * Return key definitions for DB_DataObject and Memcache_DataObject.
     *
     * DB_DataObject needs to know about keys that the table has; this function
     * defines them.
     *
     * @return array key definitions
     */

    public function keyTypes()
    {
        $table = static::schemaDef();
        $keys = array();

        if (!empty($table['unique keys'])) {
            foreach ($table['unique keys'] as $idx => $fields) {
                foreach ($fields as $name) {
                    $keys[$name] = 'U';
                }
            }
        }

        if (!empty($table['primary key'])) {
            foreach ($table['primary key'] as $name) {
                $keys[$name] = 'K';
            }
        }
        return $keys;
    }

    /**
     * Build the appropriate DB_DataObject bitfield map for this field.
     *
     * @param array $column
     * @return int
     */
    public function columnBitmap($column)
    {
        $type = $column['type'];

        // For quoting style...
        $intTypes = [
            'int',
            'float',
            'serial',
            'numeric'
        ];
        if (in_array($type, $intTypes)) {
            $style = DB_DATAOBJECT_INT;
        } else {
            $style = DB_DATAOBJECT_STR;
        }

        // Data type formatting style...
        $formatStyles = [
            'blob'      => DB_DATAOBJECT_BLOB,
            'text'      => DB_DATAOBJECT_TXT,
            'bool'      => DB_DATAOBJECT_BOOL,
            'date'      => DB_DATAOBJECT_DATE,
            'time'      => DB_DATAOBJECT_TIME,
            'datetime'  => DB_DATAOBJECT_DATE | DB_DATAOBJECT_TIME,
            'timestamp' => DB_DATAOBJECT_MYSQLTIMESTAMP,
        ];

        if (isset($formatStyles[$type])) {
            $style |= $formatStyles[$type];
        }

        // Nullable?
        if (!empty($column['not null'])) {
            $style |= DB_DATAOBJECT_NOTNULL;
        }

        return $style;
    }

    public function links()
    {
        $links = array();

        $table = static::schemaDef();

        foreach ($table['foreign keys'] as $keyname => $keydef) {
            if (count($keydef) == 2 && is_string($keydef[0]) && is_array($keydef[1]) && count($keydef[1]) == 1) {
                if (isset($keydef[1][0])) {
                    $links[$keydef[1][0]] = $keydef[0].':'.$keydef[1][1];
                }
            }
        }
        return $links;
    }

    /**
     * Return a list of all primary/unique keys / vals that will be used for
     * caching. This will understand compound unique keys, which
     * Memcached_DataObject doesn't have enough info to handle properly.
     *
     * @return array of strings
     * @throws MethodNotImplementedException
     * @throws ServerException
     */
    public function _allCacheKeys()
    {
        $table = static::schemaDef();
        $ckeys = array();

        if (!empty($table['unique keys'])) {
            $keyNames = $table['unique keys'];
            foreach ($keyNames as $idx => $fields) {
                $val = array();
                foreach ($fields as $name) {
                    $val[$name] = self::valueString($this->$name);
                }
                $ckeys[] = self::multicacheKey($this->tableName(), $val);
            }
        }

        if (!empty($table['primary key'])) {
            $fields = $table['primary key'];
            $val = array();
            foreach ($fields as $name) {
                $val[$name] = self::valueString($this->$name);
            }
            $ckeys[] = self::multicacheKey($this->tableName(), $val);
        }
        return $ckeys;
    }

    public function escapedTableName()
    {
        return common_database_tablename($this->tableName());
    }

    /**
     * Returns an object by looking at the primary key column(s).
     *
     * Will require all primary key columns to be defined in an associative array
     * and ignore any keys which are not part of the primary key.
     *
     * Will NOT accept NULL values as part of primary key.
     *
     * @param   array   $vals       Must match all primary key columns for the dataobject.
     *
     * @return  Managed_DataObject  of the get_called_class() type
     * @throws  NoResultException   if no object with that primary key
     */
    public static function getByPK(array $vals)
    {
        $classname = get_called_class();

        $pkey = static::pkeyCols();
        if (is_null($pkey)) {
            throw new ServerException("Failed to get primary key columns for class '{$classname}'");
        }

        $object = new $classname();
        foreach ($pkey as $col) {
            if (!array_key_exists($col, $vals)) {
                throw new ServerException("Missing primary key column '{$col}' for ".get_called_class()." among provided keys: ".implode(',', array_keys($vals)));
            } elseif (is_null($vals[$col])) {
                throw new ServerException("NULL values not allowed in getByPK for column '{$col}'");
            }
            $object->$col = $vals[$col];
        }
        if (!$object->find(true)) {
            throw new NoResultException($object);
        }
        return $object;
    }

    /**
     * Returns an object by looking at given unique key columns.
     *
     * Will NOT accept NULL values for a unique key column. Ignores non-key values.
     *
     * @param   array   $vals       All array keys which are set must be non-null.
     *
     * @return  Managed_DataObject  of the get_called_class() type
     * @throws  NoResultException   if no object with that primary key
     */
    public static function getByKeys(array $vals)
    {
        $classname = get_called_class();

        $object = new $classname();

        $keys = $object->keys();
        if (is_null($keys)) {
            throw new ServerException("Failed to get key columns for class '{$classname}'");
        }

        foreach ($keys as $col) {
            if (!array_key_exists($col, $vals)) {
                continue;
            } elseif (is_null($vals[$col])) {
                throw new ServerException("NULL values not allowed in getByKeys for column '{$col}'");
            }
            $object->$col = $vals[$col];
        }
        if (!$object->find(true)) {
            throw new NoResultException($object);
        }
        return $object;
    }

    public static function getByID($id)
    {
        if (!property_exists(get_called_class(), 'id')) {
            throw new ServerException('Trying to get undefined property of dataobject class.');
        }
        if (empty($id)) {
            throw new EmptyPkeyValueException(get_called_class(), 'id');
        }
        // getByPK throws exception if id is null
        // or if the class does not have a single 'id' column as primary key
        return static::getByPK(array('id' => $id));
    }

    public static function getByUri($uri)
    {
        if (!property_exists(get_called_class(), 'uri')) {
            throw new ServerException('Trying to get undefined property of dataobject class.');
        }
        if (empty($uri)) {
            throw new EmptyPkeyValueException(get_called_class(), 'uri');
        }

        $class = get_called_class();
        $obj = new $class();
        $obj->uri = $uri;
        if (!$obj->find(true)) {
            throw new NoResultException($obj);
        }
        return $obj;
    }

    /**
     * Returns an ID, checked that it is set and reasonably valid
     *
     * If this dataobject uses a special id field (not 'id'), just
     * implement your ID getting method in the child class.
     *
     * @return int ID of dataobject
     * @throws Exception (when ID is not available or not set yet)
     */
    public function getID()
    {
        // FIXME: Make these exceptions more specific (their own classes)
        if (!isset($this->id)) {
            throw new Exception('No ID set.');
        } elseif (empty($this->id)) {
            throw new Exception('Empty ID for object! (not inserted yet?).');
        }

        return intval($this->id);
    }

    /**
     * Check whether the column is NULL in SQL
     *
     * @param string $key column property name
     *
     * @return bool
     */
    public function isNull(string $key): bool
    {
        if (array_key_exists($key, get_object_vars($this))
            && is_null($this->$key)) {
            // If there was no fetch, this is a false positive.
            return true;
        } elseif (is_object($this->$key)
                  && $this->$key instanceof DB_DataObject_Cast
                  && $this->$key->type === 'sql') {
            // This is cast to raw SQL, let's see if it's NULL.
            return (strcasecmp($this->$key->value, 'NULL') == 0);
        } elseif (DB_DataObject::_is_null($this, $key)) {
            // DataObject's NULL magic should be disabled,
            // this is just for completeness.
            return true;
        }
        return false;
    }

    /**
     * WARNING: Only use this on Profile and Notice. We should probably do
     * this with traits/"implements" or whatever, but that's over the top
     * right now, I'm just throwing this in here to avoid code duplication
     * in Profile and Notice classes.
     */
    public function getAliases()
    {
        return array_keys($this->getAliasesWithIDs());
    }

    public function getAliasesWithIDs()
    {
        $aliases = array();
        $aliases[$this->getUri()] = $this->getID();

        try {
            $aliases[$this->getUrl()] = $this->getID();
        } catch (InvalidUrlException $e) {
            // getUrl failed because no valid URL could be returned, just ignore it
        }

        if (common_config('fix', 'fancyurls')) {
            /**
             * Here we add some hacky hotfixes for remote lookups that have been taught the
             * (at least now) wrong URI but it's still obviously the same user. Such as:
             * - https://site.example/user/1 even if the client requests https://site.example/index.php/user/1
             * - https://site.example/user/1 even if the client requests https://site.example//index.php/user/1
             * - https://site.example/index.php/user/1 even if the client requests https://site.example/user/1
             * - https://site.example/index.php/user/1 even if the client requests https://site.example///index.php/user/1
             */
            foreach ($aliases as $alias=>$id) {
                try {
                    // get a "fancy url" version of the alias, even without index.php/
                    $alt_url = common_fake_local_fancy_url($alias);
                    // store this as well so remote sites can be sure we really are the same profile
                    $aliases[$alt_url] = $id;
                } catch (Exception $e) {
                    // Apparently we couldn't rewrite that, the $alias was as the function wanted it to be
                }

                try {
                    // get a non-"fancy url" version of the alias, i.e. add index.php/
                    $alt_url = common_fake_local_nonfancy_url($alias);
                    // store this as well so remote sites can be sure we really are the same profile
                    $aliases[$alt_url] = $id;
                } catch (Exception $e) {
                    // Apparently we couldn't rewrite that, the $alias was as the function wanted it to be
                }
            }
        }
        return $aliases;
    }

    /**
     * update() won't write key columns, so we have to do it ourselves.
     * This also automatically calls "update" _before_ it sets the keys.
     * FIXME: This only works with single-column primary keys so far! Beware!
     *
     * @param Managed_DataObject $orig Must be "instanceof" $this
     * @param string $pid Primary ID column (no escaping is done on column name!)
     * @return bool|void
     * @throws MethodNotImplementedException
     * @throws ServerException
     */
    public function updateWithKeys(Managed_DataObject $orig, ?string $pid = null)
    {
        if (!$orig instanceof $this) {
            throw new ServerException('Tried updating a DataObject with a different class than itself.');
        }

        if ($this->N <1) {
            throw new ServerException('DataObject must be the result of a query (N>=1) before updateWithKeys()');
        }

        $this->onUpdateKeys($orig);

        // do it in a transaction
        $this->query('BEGIN');

        $parts = [];
        foreach ($this->keys() as $k) {
            $v = $this->table()[$k];
            if ($this->$k !== $orig->$k) {
                if (is_object($this->$k) && $this->$k instanceof DB_DataObject_Cast) {
                    $value = $this->$k->toString($v, $this->getDatabaseConnection());
                } elseif (DB_DataObject::_is_null($this, $k)) {
                    $value = 'NULL';
                } elseif ($v & DB_DATAOBJECT_STR) { // if a string
                    $value = $this->_quote((string) $this->$k);
                } else {
                    $value = (int) $this->$k;
                }
                $parts[] = "{$k} = {$value}";
            }
        }
        if (count($parts) == 0) {
            // No changes to keys, it's safe to run ->update(...)
            if ($this->update($orig) === false) {
                common_log_db_error($this, 'UPDATE', __FILE__);
                // rollback as something bad occurred
                $this->query('ROLLBACK');
                throw new ServerException("Could not UPDATE non-keys for {$this->tableName()}");
            }
            $orig->decache();
            $this->encache();

            // commit our db transaction since we won't reach the COMMIT below
            $this->query('COMMIT');
            // @FIXME return true only if something changed (otherwise 0)
            return true;
        }

        if ($pid === null) {
            $schema = static::schemaDef();
            $pid = $schema['primary key'];
            unset($schema);
        }
        $pidWhere = [];
        foreach ((array) $pid as $pidCol) {
            $pidWhere[] = sprintf('%1$s = %2$s', $pidCol, $this->_quote($orig->$pidCol));
        }
        if (empty($pidWhere)) {
            throw new ServerException('No primary ID column(s) set for updateWithKeys');
        }

        $qry = sprintf(
            'UPDATE %1$s SET %2$s WHERE %3$s',
            $this->escapedTableName(),
            implode(', ', $parts),
            implode(' AND ', $pidWhere)
        );

        $result = $this->query($qry);
        if ($result === false) {
            common_log_db_error($this, 'UPDATE', __FILE__);
            // rollback as something bad occurred
            $this->query('ROLLBACK');
            throw new ServerException("Could not UPDATE key fields for {$this->tableName()}");
        }

        // Update non-keys too, if the previous endeavour worked.
        // The ->update call uses "$this" values for keys, that's why we can't do this until
        // the keys are updated (because they might differ from $orig and update the wrong entries).
        if ($this->update($orig) === false) {
            common_log_db_error($this, 'UPDATE', __FILE__);
            // rollback as something bad occurred
            $this->query('ROLLBACK');
            throw new ServerException("Could not UPDATE non-keys for {$this->tableName()}");
        }
        $orig->decache();
        $this->encache();

        // commit our db transaction
        $this->query('COMMIT');
        // @FIXME return true only if something changed (otherwise 0)
        return $result;
    }

    public static function beforeSchemaUpdate()
    {
        // NOOP
    }

    public static function newUri(Profile $actor, Managed_DataObject $object, $created = null)
    {
        if (is_null($created)) {
            $created = common_sql_now();
        }
        return TagURI::mint(
            strtolower(get_called_class()) . ':%d:%s:%d:%s',
            $actor->getID(),
            ActivityUtils::resolveUri($object->getObjectType(), true),
            $object->getID(),
            common_date_iso8601($created)
        );
    }

    protected function onInsert()
    {
        // NOOP by default
    }

    protected function onUpdate($dataObject=false)
    {
        // NOOP by default
    }

    protected function onUpdateKeys(Managed_DataObject $orig)
    {
        // NOOP by default
    }

    public function insert()
    {
        $this->onInsert();
        return parent::insert();
    }

    public function update($dataObject=false)
    {
        $this->onUpdate($dataObject);
        return parent::update($dataObject);
    }
}


code:
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social.  If not, see <http://www.gnu.org/licenses/>.

/**
 * @copyright 2008, 2009 StatusNet, Inc.
 * @license   https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
 */

defined('GNUSOCIAL') || die();

class Memcached_DataObject extends Safe_DataObject
{
    /**
     * Wrapper for DB_DataObject's static lookup using memcached
     * as backing instead of an in-process cache array.
     *
     * @param string $cls classname of object type to load
     * @param mixed $k key field name, or value for primary key
     * @param mixed $v key field value, or leave out for primary key lookup
     * @return mixed Memcached_DataObject subtype or false
     */
    public static function getClassKV($cls, $k, $v = null)
    {
        if (is_null($v)) {
            $v = $k;
            $keys = static::pkeyCols();
            if (count($keys) > 1) {
                // FIXME: maybe call pkeyGetClass() ourselves?
                throw new Exception('Use pkeyGetClass() for compound primary keys');
            }
            $k = $keys[0];
        }
        $i = self::getcached($cls, $k, $v);
        if ($i === false) { // false == cache miss
            $i = new $cls;
            $result = $i->get($k, $v);
            if ($result) {
                // Hit!
                $i->encache();
            } else {
                // save the fact that no such row exists
                $c = self::memcache();
                if (!empty($c)) {
                    $ck = self::cachekey($cls, $k, $v);
                    $c->set($ck, null);
                }
                $i = false;
            }
        }
        return $i;
    }

    /**
     * Get multiple items from the database by key
     *
     * @param string  $cls       Class to fetch
     * @param string  $keyCol    name of column for key
     * @param array   $keyVals   key values to fetch
     * @param boolean $skipNulls skip provided null values
     *
     * @return array Array of objects, in order
     */
    public static function multiGetClass($cls, $keyCol, array $keyVals, $skipNulls = true)
    {
        $obj = new $cls;

        // PHP compatible datatype for settype() below
        $colType = $obj->columnType($keyCol);

        if (!in_array($colType, array('integer', 'int'))) {
            // This is because I'm afraid to escape strings incorrectly
            // in the way we use them below in FIND_IN_SET for MariaDB
            throw new ServerException('Cannot do multiGet on anything but integer columns');
        }

        if ($skipNulls) {
            foreach ($keyVals as $key=>$val) {
                if (is_null($val)) {
                    unset($keyVals[$key]);
                }
            }
        }

        $obj->whereAddIn($keyCol, $keyVals, $colType);

        // Since we're inputting straight to a query: format and escape
        foreach ($keyVals as $key=>$val) {
            settype($val, $colType);
            $keyVals[$key] = $obj->escape($val);
        }

        switch (common_config('db', 'type')) {
            case 'pgsql':
                // "position" will make sure we keep the desired order
                $obj->orderBy(sprintf(
                    "position(',' || CAST(%s AS text) || ',' IN ',%s,')",
                    $keyCol,
                    implode(',', $keyVals)
                ));
                break;
            case 'mysql':
                // "find_in_set" will make sure we keep the desired order
                $obj->orderBy(sprintf(
                    "find_in_set(%s, '%s')",
                    $keyCol,
                    implode(',', $keyVals)
                ));
                break;
            default:
                throw new ServerException('Unknown DB type selected.');
        }

        $obj->find();

        return $obj;
    }

    /**
     * Get multiple items from the database by key
     *
     * @param string  $cls       Class to fetch
     * @param string  $keyCol    name of column for key
     * @param array   $keyVals   key values to fetch
     * @param boolean $otherCols Other columns to hold fixed
     *
     * @return array Array mapping $keyVals to objects, or null if not found
     */
    public static function pivotGetClass($cls, $keyCol, array $keyVals, array $otherCols = [])
    {
        if (is_array($keyCol)) {
            foreach ($keyVals as $keyVal) {
                $result[implode(',', $keyVal)] = null;
            }
        } else {
            $result = array_fill_keys($keyVals, null);
        }

        $toFetch = array();

        foreach ($keyVals as $keyVal) {
            if (is_array($keyCol)) {
                $kv = array_combine($keyCol, $keyVal);
            } else {
                $kv = array($keyCol => $keyVal);
            }

            $kv = array_merge($otherCols, $kv);

            $i = self::multicache($cls, $kv);

            if ($i !== false) {
                if (is_array($keyCol)) {
                    $result[implode(',', $keyVal)] = $i;
                } else {
                    $result[$keyVal] = $i;
                }
            } elseif (!empty($keyVal)) {
                $toFetch[] = $keyVal;
            }
        }

        if (count($toFetch) > 0) {
            $i = new $cls;
            foreach ($otherCols as $otherKeyCol => $otherKeyVal) {
                $i->$otherKeyCol = $otherKeyVal;
            }
            if (is_array($keyCol)) {
                $i->whereAdd(self::_inMultiKey($i, $keyCol, $toFetch));
            } else {
                $i->whereAddIn($keyCol, $toFetch, $i->columnType($keyCol));
            }
            if ($i->find()) {
                while ($i->fetch()) {
                    $copy = clone($i);
                    $copy->encache();
                    if (is_array($keyCol)) {
                        $vals = array();
                        foreach ($keyCol as $k) {
                            $vals[] = $i->$k;
                        }
                        $result[implode(',', $vals)] = $copy;
                    } else {
                        $result[$i->$keyCol] = $copy;
                    }
                }
            }

            // Save state of DB misses

            foreach ($toFetch as $keyVal) {
                $r = null;
                if (is_array($keyCol)) {
                    $r = $result[implode(',', $keyVal)];
                } else {
                    $r = $result[$keyVal];
                }
                if (empty($r)) {
                    if (is_array($keyCol)) {
                        $kv = array_combine($keyCol, $keyVal);
                    } else {
                        $kv = array($keyCol => $keyVal);
                    }
                    $kv = array_merge($otherCols, $kv);
                    // save the fact that no such row exists
                    $c = self::memcache();
                    if (!empty($c)) {
                        $ck = self::multicacheKey($cls, $kv);
                        $c->set($ck, null);
                    }
                }
            }
        }

        return $result;
    }

    public static function _inMultiKey($i, $cols, $values)
    {
        $types = array();

        foreach ($cols as $col) {
            $types[$col] = $i->columnType($col);
        }

        $first = true;

        $query = '';

        foreach ($values as $value) {
            if ($first) {
                $query .= '( ';
                $first = false;
            } else {
                $query .= ' OR ';
            }
            $query .= '( ';
            $i = 0;
            $firstc = true;
            foreach ($cols as $col) {
                if (!$firstc) {
                    $query .= ' AND ';
                } else {
                    $firstc = false;
                }
                switch ($types[$col]) {
                case 'string':
                case 'datetime':
                    $query .= sprintf("%s = %s", $col, $i->_quote($value[$i]));
                    break;
                default:
                    $query .= sprintf("%s = %s", $col, $value[$i]);
                    break;
                }
            }
            $query .= ') ';
        }

        if (!$first) {
            $query .= ' )';
        }

        return $query;
    }

    public static function pkeyColsClass($cls)
    {
        $i = new $cls;
        $types = $i->keyTypes();
        ksort($types);

        $pkey = array();

        foreach ($types as $key => $type) {
            if ($type == 'K' || $type == 'N') {
                $pkey[] = $key;
            }
        }

        return $pkey;
    }

    public static function listFindClass($cls, $keyCol, array $keyVals)
    {
        $i = new $cls;
        $i->whereAddIn($keyCol, $keyVals, $i->columnType($keyCol));
        if (!$i->find()) {
            throw new NoResultException($i);
        }

        return $i;
    }

    public static function listGetClass($cls, $keyCol, array $keyVals)
    {
        $pkeyMap = array_fill_keys($keyVals, array());
        $result = array_fill_keys($keyVals, array());

        $pkeyCols = static::pkeyCols();

        $toFetch = array();
        $allPkeys = array();

        // We only cache keys -- not objects!

        foreach ($keyVals as $keyVal) {
            $l = self::cacheGet(sprintf('%s:list-ids:%s:%s', strtolower($cls), $keyCol, $keyVal));
            if ($l !== false) {
                $pkeyMap[$keyVal] = $l;
                foreach ($l as $pkey) {
                    $allPkeys[] = $pkey;
                }
            } else {
                $toFetch[] = $keyVal;
            }
        }

        if (count($allPkeys) > 0) {
            $keyResults = self::pivotGetClass($cls, $pkeyCols, $allPkeys);

            foreach ($pkeyMap as $keyVal => $pkeyList) {
                foreach ($pkeyList as $pkeyVal) {
                    $i = $keyResults[implode(',', $pkeyVal)];
                    if (!empty($i)) {
                        $result[$keyVal][] = $i;
                    }
                }
            }
        }

        if (count($toFetch) > 0) {
            try {
                $i = self::listFindClass($cls, $keyCol, $toFetch);

                while ($i->fetch()) {
                    $copy = clone($i);
                    $copy->encache();
                    $result[$i->$keyCol][] = $copy;
                    $pkeyVal = array();
                    foreach ($pkeyCols as $pkeyCol) {
                        $pkeyVal[] = $i->$pkeyCol;
                    }
                    $pkeyMap[$i->$keyCol][] = $pkeyVal;
                }
            } catch (NoResultException $e) {
                // no results found for our keyVals, so we leave them as empty arrays
            }
            foreach ($toFetch as $keyVal) {
                self::cacheSet(
                    sprintf("%s:list-ids:%s:%s", strtolower($cls), $keyCol, $keyVal),
                    $pkeyMap[$keyVal]
                );
            }
        }

        return $result;
    }

    public function columnType($columnName)
    {
        $keys = $this->table();
        if (!array_key_exists($columnName, $keys)) {
            throw new Exception('Unknown key column ' . $columnName . ' in ' . join(',', array_keys($keys)));
        }

        $def = $keys[$columnName];

        if ($def & DB_DATAOBJECT_INT) {
            return 'integer';
        } else {
            return 'string';
        }
    }

    /**
     * @todo FIXME: Should this return false on lookup fail to match getKV?
     */
    public static function pkeyGetClass($cls, array $kv)
    {
        $i = self::multicache($cls, $kv);
        if ($i !== false) { // false == cache miss
            return $i;
        } else {
            $i = new $cls;
            foreach ($kv as $k => $v) {
                if (is_null($v)) {
                    // XXX: possible SQL injection...? Don't
                    // pass keys from the browser, eh.
                    $i->whereAdd("$k is null");
                } else {
                    $i->$k = $v;
                }
            }
            if ($i->find(true)) {
                $i->encache();
            } else {
                $i = null;
                $c = self::memcache();
                if (!empty($c)) {
                    $ck = self::multicacheKey($cls, $kv);
                    $c->set($ck, null);
                }
            }
            return $i;
        }
    }

    public function insert()
    {
        $result = parent::insert();
        if ($result) {
            $this->fixupTimestamps();
            $this->encache(); // in case of cached negative lookups
        }
        return $result;
    }

    public function update($dataObject = false)
    {
        if (is_object($dataObject) && $dataObject instanceof Memcached_DataObject) {
            $dataObject->decache(); # might be different keys
        }
        $result = parent::update($dataObject);
        if ($result !== false) {
            $this->fixupTimestamps();
            $this->encache();
        }
        return $result;
    }

    public function delete($useWhere = false)
    {
        $this->decache(); # while we still have the values!
        return parent::delete($useWhere);
    }

    public static function memcache()
    {
        return Cache::instance();
    }

    public static function cacheKey($cls, $k, $v)
    {
        if (is_object($cls) || is_object($k) || (is_object($v) && !($v instanceof DB_DataObject_Cast))) {
            $e = new Exception();
            common_log(LOG_ERR, __METHOD__ . ' object in param: ' .
                str_replace("\n", " ", $e->getTraceAsString()));
        }
        $vstr = self::valueString($v);
        return Cache::key(strtolower($cls).':'.$k.':'.$vstr);
    }

    public static function getcached($cls, $k, $v)
    {
        $c = self::memcache();
        if (!$c) {
            return false;
        } else {
            $obj = $c->get(self::cacheKey($cls, $k, $v));
            if (0 == strcasecmp($cls, 'User')) {
                // Special case for User
                if (is_object($obj) && is_object($obj->id)) {
                    common_log(LOG_ERR, "User " . $obj->nickname . " was cached with User as ID; deleting");
                    $c->delete(self::cacheKey($cls, $k, $v));
                    return false;
                }
            }
            return $obj;
        }
    }

    public function keyTypes()
    {
        // ini-based classes return number-indexed arrays. handbuilt
        // classes return column => keytype. Make this uniform.

        $keys = $this->keys();

        $keyskeys = array_keys($keys);

        if (is_string($keyskeys[0])) {
            return $keys;
        }

        global $_DB_DATAOBJECT;
        if (!isset($_DB_DATAOBJECT['INI'][$this->_database][$this->tableName()."__keys"])) {
            $this->databaseStructure();
        }
        return $_DB_DATAOBJECT['INI'][$this->_database][$this->tableName()."__keys"];
    }

    public function encache()
    {
        $c = self::memcache();

        if (!$c) {
            return false;
        } elseif ($this->tableName() === 'user' && is_object($this->id)) {
            // Special case for User bug
            $e = new Exception();
            common_log(LOG_ERR, __METHOD__ . ' caching user with User object as ID ' .
                       str_replace("\n", " ", $e->getTraceAsString()));
            return false;
        } else {
            $keys = $this->_allCacheKeys();

            foreach ($keys as $key) {
                $c->set($key, $this);
            }
        }
    }

    public function decache()
    {
        $c = self::memcache();

        if (!$c) {
            return false;
        }

        $keys = $this->_allCacheKeys();

        foreach ($keys as $key) {
            $c->delete($key, $this);
        }
    }

    public function _allCacheKeys()
    {
        $ckeys = array();

        $types = $this->keyTypes();
        ksort($types);

        $pkey = array();
        $pval = array();

        foreach ($types as $key => $type) {
            assert(!empty($key));

            if ($type == 'U') {
                if (empty($this->$key)) {
                    continue;
                }
                $ckeys[] = self::cacheKey($this->tableName(), $key, self::valueString($this->$key));
            } elseif (in_array($type, ['K', 'N'])) {
                $pkey[] = $key;
                $pval[] = self::valueString($this->$key);
            } else {
                // Low level exception. No need for i18n as discussed with Brion.
                throw new Exception("Unknown key type $key => $type for " . $this->tableName());
            }
        }

        assert(count($pkey) > 0);

        // XXX: should work for both compound and scalar pkeys
        $pvals = implode(',', $pval);
        $pkeys = implode(',', $pkey);

        $ckeys[] = self::cacheKey($this->tableName(), $pkeys, $pvals);

        return $ckeys;
    }

    public static function multicache($cls, $kv)
    {
        ksort($kv);
        $c = self::memcache();
        if (!$c) {
            return false;
        } else {
            return $c->get(self::multicacheKey($cls, $kv));
        }
    }

    public static function multicacheKey($cls, $kv)
    {
        ksort($kv);
        $pkeys = implode(',', array_keys($kv));
        $pvals = implode(',', array_values($kv));
        return self::cacheKey($cls, $pkeys, $pvals);
    }

    public function getSearchEngine($table)
    {
        require_once INSTALLDIR . '/lib/search/search_engines.php';

        if (Event::handle('GetSearchEngine', [$this, $table, &$search_engine])) {
            $type = common_config('search', 'type');
            if ($type === 'like') {
                $search_engine = new SQLLikeSearch($this, $table);
            } elseif ($type === 'fulltext') {
                switch (common_config('db', 'type')) {
                    case 'pgsql':
                        $search_engine = new PostgreSQLSearch($this, $table);
                        break;
                    case 'mysql':
                        $search_engine = new MySQLSearch($this, $table);
                        break;
                    default:
                        throw new ServerException('Unknown DB type selected.');
                }
            } else {
                // Low level exception. No need for i18n as discussed with Brion.
                throw new ServerException('Unknown search type: ' . $type);
            }
        }

        return $search_engine;
    }

    public static function cachedQuery($cls, $qry, $expiry = 3600)
    {
        $c = self::memcache();
        if (!$c) {
            $inst = new $cls();
            $inst->query($qry);
            return $inst;
        }
        $key_part = Cache::keyize($cls).':'.md5($qry);
        $ckey = Cache::key($key_part);
        $stored = $c->get($ckey);

        if ($stored !== false) {
            return new ArrayWrapper($stored);
        }

        $inst = new $cls();
        $inst->query($qry);
        $cached = array();
        while ($inst->fetch()) {
            $cached[] = clone($inst);
        }
        $inst->free();
        $c->set($ckey, $cached, Cache::COMPRESSED, $expiry);
        return new ArrayWrapper($cached);
    }

    /**
     * sends query to database - this is the private one that must work
     *   - internal functions use this rather than $this->query()
     *
     * Overridden to do logging.
     *
     * @param  string  $string
     * @access private
     * @return mixed none or PEAR_Error
     */
    public function _query($string)
    {
        if (common_config('db', 'annotate_queries')) {
            $string = $this->annotateQuery($string);
        }

        $start = hrtime(true);
        $fail = false;
        $result = null;
        if (Event::handle('StartDBQuery', array($this, $string, &$result))) {
            common_perf_counter('query', $string);
            try {
                $result = parent::_query($string);
            } catch (Exception $e) {
                $fail = $e;
            }
            Event::handle('EndDBQuery', array($this, $string, &$result));
        }
        $delta = (hrtime(true) - $start) / 1000000000;

        $limit = common_config('db', 'log_slow_queries');
        if (($limit > 0 && $delta >= $limit) || common_config('db', 'log_queries')) {
            $clean = $this->sanitizeQuery($string);
            if ($fail) {
                $msg = sprintf("FAILED DB query (%0.3fs): %s - %s", $delta, $fail->getMessage(), $clean);
            } else {
                $msg = sprintf("DB query (%0.3fs): %s", $delta, $clean);
            }
            common_log(LOG_DEBUG, $msg);
        }

        if ($fail) {
            throw $fail;
        }
        return $result;
    }

    /**
     * Find the first caller in the stack trace that's not a
     * low-level database function and add a comment to the
     * query string. This should then be visible in process lists
     * and slow query logs, to help identify problem areas.
     *
     * Also marks whether this was a web GET/POST or which daemon
     * was running it.
     *
     * @param string $string SQL query string
     * @return string SQL query string, with a comment in it
     */
    public function annotateQuery($string)
    {
        $ignore = array('annotateQuery',
                        '_query',
                        'query',
                        'get',
                        'insert',
                        'delete',
                        'update',
                        'find');
        $ignoreStatic = array('getKV',
                              'getClassKV',
                              'pkeyGet',
                              'pkeyGetClass',
                              'cachedQuery');
        $here = get_class($this); // if we get confused
        $bt = debug_backtrace();

        // Find the first caller that's not us?
        foreach ($bt as $frame) {
            $func = $frame['function'];
            if (isset($frame['type']) && $frame['type'] == '::') {
                if (in_array($func, $ignoreStatic)) {
                    continue;
                }
                $here = $frame['class'] . '::' . $func;
                break;
            } elseif (isset($frame['type']) && $frame['type'] === '->') {
                if ($frame['object'] === $this && in_array($func, $ignore)) {
                    continue;
                }
                if (in_array($func, $ignoreStatic)) {
                    continue; // @todo FIXME: This shouldn't be needed?
                }
                $here = get_class($frame['object']) . '->' . $func;
                break;
            }
            $here = $func;
            break;
        }

        if (php_sapi_name() == 'cli') {
            $context = basename($_SERVER['PHP_SELF']);
        } else {
            $context = $_SERVER['REQUEST_METHOD'];
        }

        // Slip the comment in after the first command,
        // or DB_DataObject gets confused about handling inserts and such.
        $parts = explode(' ', $string, 2);
        $parts[0] .= " /* $context $here */";
        return implode(' ', $parts);
    }

    // Sanitize a query for logging
    // @fixme don't trim spaces in string literals
    public function sanitizeQuery($string)
    {
        $string = preg_replace('/\s+/', ' ', $string);
        $string = trim($string);
        return $string;
    }

    // We overload so that 'SET NAMES "utf8mb4"' is called for
    // each connection

    public function _connect()
    {
        global $_DB_DATAOBJECT, $_PEAR;

        $sum = $this->_getDbDsnMD5();

        if (!empty($_DB_DATAOBJECT['CONNECTIONS'][$sum]) &&
            !$_PEAR->isError($_DB_DATAOBJECT['CONNECTIONS'][$sum])) {
            $exists = true;
        } else {
            $exists = false;
        }

        // @fixme horrible evil hack!
        //
        // In multisite configuration we don't want to keep around a separate
        // connection for every database; we could end up with thousands of
        // connections open per thread. In an ideal world we might keep
        // a connection per server and select different databases, but that'd
        // be reliant on having the same db username/pass as well.
        //
        // MySQL connections are cheap enough we're going to try just
        // closing out the old connection and reopening when we encounter
        // a new DSN.
        //
        // WARNING WARNING if we end up actually using multiple DBs at a time
        // we'll need some fancier logic here.
        if (!$exists && !empty($_DB_DATAOBJECT['CONNECTIONS']) && php_sapi_name() == 'cli') {
            foreach ($_DB_DATAOBJECT['CONNECTIONS'] as $index => $conn) {
                if ($_PEAR->isError($conn)) {
                    common_log(LOG_WARNING, __METHOD__ . " cannot disconnect failed DB connection: '".$conn->getMessage()."'.");
                } elseif (!empty($conn)) {
                    $conn->disconnect();
                }
                unset($_DB_DATAOBJECT['CONNECTIONS'][$index]);
            }
        }

        $result = parent::_connect();

        if ($result && !$exists) {
            $DB = &$_DB_DATAOBJECT['CONNECTIONS'][$this->_database_dsn_md5];
            if (common_config('db', 'type') == 'mysql' &&
                common_config('db', 'utf8')) {
                $conn = $DB->connection;
                if (!empty($conn)) {
                    if ($DB instanceof DB_mysqli || $DB instanceof MDB2_Driver_mysqli) {
                        mysqli_set_charset($conn, 'utf8mb4');
                    } elseif ($DB instanceof DB_mysql || $DB instanceof MDB2_Driver_mysql) {
                        mysql_set_charset('utf8mb4', $conn);
                    }
                }
            }
            // Needed to make timestamp values usefully comparable.
            if (common_config('db', 'type') == 'mysql') {
                parent::_query("set time_zone='+0:00'");
            }
        }

        return $result;
    }

    // XXX: largely cadged from DB_DataObject

    public function _getDbDsnMD5()
    {
        if ($this->_database_dsn_md5) {
            return $this->_database_dsn_md5;
        }

        $dsn = $this->_getDbDsn();

        if (is_string($dsn)) {
            $sum = md5($dsn);
        } else {
            /// support array based dsn's
            $sum = md5(serialize($dsn));
        }

        return $sum;
    }

    public function _getDbDsn()
    {
        global $_DB_DATAOBJECT;

        if (empty($_DB_DATAOBJECT['CONFIG'])) {
            self::_loadConfig();
        }

        $options = &$_DB_DATAOBJECT['CONFIG'];

        // if the databse dsn dis defined in the object..

        $dsn = isset($this->_database_dsn) ? $this->_database_dsn : null;

        if (!$dsn) {
            if (!$this->_database) {
                $this->_database = isset($options["table_{$this->tableName()}"]) ? $options["table_{$this->tableName()}"] : null;
            }

            if ($this->_database && !empty($options["database_{$this->_database}"])) {
                $dsn = $options["database_{$this->_database}"];
            } elseif (!empty($options['database'])) {
                $dsn = $options['database'];
            }
        }

        if (!$dsn) {
            // TRANS: Exception thrown when database name or Data Source Name could not be found.
            throw new Exception(_('No database name or DSN found anywhere.'));
        }

        return $dsn;
    }

    public static function blow()
    {
        $c = self::memcache();

        if (empty($c)) {
            return false;
        }

        $args = func_get_args();

        $format = array_shift($args);

        $keyPart = vsprintf($format, $args);

        $cacheKey = Cache::key($keyPart);

        return $c->delete($cacheKey);
    }

    public function fixupTimestamps()
    {
        // Fake up timestamp columns
        $columns = $this->table();
        foreach ($columns as $name => $type) {
            if ($type & DB_DATAOBJECT_MYSQLTIMESTAMP) {
                $this->$name = common_sql_now();
            }
        }
    }

    public function debugDump()
    {
        common_debug("debugDump: " . common_log_objstring($this));
    }

    public function raiseError($message, $type = null, $behavior = null)
    {
        $id = get_class($this);
        if (!empty($this->id)) {
            $id .= ':' . $this->id;
        }
        if ($message instanceof PEAR_Error) {
            $message = $message->getMessage();
        }
        // Low level exception. No need for i18n as discussed with Brion.
        throw new ServerException("[$id] DB_DataObject error [$type]: $message");
    }

    public static function cacheGet($keyPart)
    {
        $c = self::memcache();

        if (empty($c)) {
            return false;
        }

        $cacheKey = Cache::key($keyPart);

        return $c->get($cacheKey);
    }

    public static function cacheSet($keyPart, $value, $flag = null, $expiry = null)
    {
        $c = self::memcache();

        if (empty($c)) {
            return false;
        }

        $cacheKey = Cache::key($keyPart);

        return $c->set($cacheKey, $value, $flag, $expiry);
    }

    public static function valueString($v)
    {
        $vstr = null;
        if (is_object($v) && $v instanceof DB_DataObject_Cast) {
            switch ($v->type) {
            case 'date':
                $vstr = "{$v->year} - {$v->month} - {$v->day}";
                break;
            case 'sql':
                if (strcasecmp($v->value, 'NULL') == 0) {
                    // Very selectively handling NULLs.
                    $vstr = '';
                    break;
                }
                // no break
            case 'blob':
            case 'string':
            case 'datetime':
            case 'time':
                // Low level exception. No need for i18n as discussed with Brion.
                throw new ServerException("Unhandled DB_DataObject_Cast type passed as cacheKey value: '$v->type'");
                break;
            default:
                // Low level exception. No need for i18n as discussed with Brion.
                throw new ServerException("Unknown DB_DataObject_Cast type passed as cacheKey value: '$v->type'");
                break;
            }
        } else {
            $vstr = strval($v);
        }
        return $vstr;
    }
}


code:
<?php
/**
 * Table Definition for nonce
 */
require_once INSTALLDIR.'/classes/Memcached_DataObject.php';

class Nonce extends Managed_DataObject
{
    ###START_AUTOCODE
    /* the code below is auto generated do not remove the above tag */

    public $__table = 'nonce';                           // table name
    public $consumer_key;                    // varchar(191)  primary_key not_null   not 255 because utf8mb4 takes more space
    public $tok;                             // char(32)
    public $nonce;                           // char(32)  primary_key not_null
    public $ts;                              // datetime()  primary_key not_null
    public $created;                         // datetime()   not_null default_0000-00-00%2000%3A00%3A00
    public $modified;                        // datetime()   not_null default_CURRENT_TIMESTAMP

    /* the code above is auto generated do not remove the tag below */
    ###END_AUTOCODE

    /**
     * Compatibility hack for PHP 5.3
     *
     * The statusnet.links.ini entry cannot be read because "," is no longer
     * allowed in key names when read by parse_ini_file().
     *
     * @return   array
     * @access   public
     */
    function links()
    {
        return array('consumer_key,token' => 'token:consumer_key,token');
    }

    public static function schemaDef()
    {
        return array(
            'description' => 'OAuth nonce record',
            'fields' => array(
                'consumer_key' => array('type' => 'varchar', 'length' => 191, 'not null' => true, 'description' => 'unique identifier, root URL'),
                'tok' => array('type' => 'char', 'length' => 32, 'description' => 'buggy old value, ignored'),
                'nonce' => array('type' => 'char', 'length' => 32, 'not null' => true, 'description' => 'nonce'),
                'ts' => array('type' => 'datetime', 'not null' => true, 'description' => 'timestamp sent'),
                'created' => array('type' => 'datetime', 'not null' => true, 'default' => '0000-00-00 00:00:00', 'description' => 'date this record was created'),
                'modified' => array('type' => 'datetime', 'not null' => true, 'default' => 'CURRENT_TIMESTAMP', 'description' => 'date this record was modified'),
            ),
            'primary key' => array('consumer_key', 'ts', 'nonce'),
        );
    }
}