group.php

讲的是网络编程

<?php
// $Id: group.php 1102 2007-10-19 02:55:52Z dugris $
//  ------------------------------------------------------------------------ //
//                XOOPS - PHP Content Management System                      //
//                    Copyright (c) 2000 XOOPS.org                           //
//                       <http://www.xoops.org/>                             //
//  ------------------------------------------------------------------------ //
//  This program is free software; you can redistribute it and/or modify     //
//  it under the terms of the GNU General Public License as published by     //
//  the Free Software Foundation; either version 2 of the License, or        //
//  (at your option) any later version.                                      //
//                                                                           //
//  You may not change or alter any portion of this comment or credits       //
//  of supporting developers from this source code or any supporting         //
//  source code which is considered copyrighted (c) material of the          //
//  original comment or credit authors.                                      //
//                                                                           //
//  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 General Public License for more details.                             //
//                                                                           //
//  You should have received a copy of the GNU General Public License        //
//  along with this program; if not, write to the Free Software              //
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA //
//  ------------------------------------------------------------------------ //
// Author: Kazumi Ono (AKA onokazu)                                          //
// URL: http://www.myweb.ne.jp/, http://www.xoops.org/, http://jp.xoops.org/ //
// Project: The XOOPS Project                                                //
// ------------------------------------------------------------------------- //

if (!defined('XOOPS_ROOT_PATH')) {
	exit();
}

/**
 * a group of users
 *
 * @copyright copyright (c) 2000-2003 XOOPS.org
 * @author Kazumi Ono <[e-mail]>
 * @package kernel
 */
class XoopsGroup extends XoopsObject
{
    /**
     * constructor
     */
    function XoopsGroup()
    {
        $this->XoopsObject();
        $this->initVar('groupid', XOBJ_DTYPE_INT, null, false);
        $this->initVar('name', XOBJ_DTYPE_TXTBOX, null, true, 100);
        $this->initVar('description', XOBJ_DTYPE_TXTAREA, null, false);
        $this->initVar('group_type', XOBJ_DTYPE_OTHER, null, false);
    }
}


/**
* XOOPS group handler class.
* This class is responsible for providing data access mechanisms to the data source
* of XOOPS group class objects.
*
* @author Kazumi Ono <[e-mail]>
* @copyright copyright (c) 2000-2003 XOOPS.org
* @package kernel
* @subpackage member
*/
class XoopsGroupHandler extends XoopsObjectHandler
{

    /**
     * create a new {@link XoopsGroup} object
     *
     * @param bool $isNew mark the new object as "new"?
     * @return object XoopsGroup reference to the new object
     *
     */
    function &create($isNew = true)
    {
        $group = new XoopsGroup();
        if ($isNew) {
            $group->setNew();
        }
        return $group;
    }

    /**
     * retrieve a specific group
     *
     * @param int $id ID of the group to get
     * @return object XoopsGroup reference to the group object, FALSE if failed
     */
    function &get($id)
    {
      $id = intval($id);
      $group = false;
    	if ($id > 0) {
            $sql = 'SELECT * FROM '.$this->db->prefix('groups').' WHERE groupid='.$id;
            if (!$result = $this->db->query($sql)) {
                return $group;
            }
            $numrows = $this->db->getRowsNum($result);
            if ($numrows == 1) {
                $group = new XoopsGroup();
                $group->assignVars($this->db->fetchArray($result));
            }
        }
        return $group;
    }

    /**
     * insert a group into the database
     *
     * @param object reference to the group object
     * @return mixed ID of the group if inserted, FALSE if failed, TRUE if already present and unchanged.
     */
    function insert(&$group)
    {
        /**
        * @TODO: Change to if (!(class_exists($this->className) && $obj instanceof $this->className)) when going fully PHP5
        */
        if (!is_a($group, 'xoopsgroup')) {
            return false;
        }
        if (!$group->isDirty()) {
            return true;
        }
        if (!$group->cleanVars()) {
            return false;
        }
        foreach ($group->cleanVars as $k => $v) {
            ${$k} = $v;
        }
        if ($group->isNew()) {
            $groupid = $this->db->genId('group_groupid_seq');
            $sql = sprintf("INSERT INTO %s (groupid, name, description, group_type) VALUES (%u, %s, %s, %s)", $this->db->prefix('groups'), $groupid, $this->db->quoteString($name), $this->db->quoteString($description), $this->db->quoteString($group_type));
        } else {
            $sql = sprintf("UPDATE %s SET name = %s, description = %s, group_type = %s WHERE groupid = %u", $this->db->prefix('groups'), $this->db->quoteString($name), $this->db->quoteString($description), $this->db->quoteString($group_type), $groupid);
        }
        if (!$result = $this->db->query($sql)) {
            return false;
        }
        if (empty($groupid)) {
            $groupid = $this->db->getInsertId();
        }
        $group->assignVar('groupid', $groupid);
        return true;
    }

    /**
     * remove a group from the database
     *
     * @param object $group reference to the group to be removed
     * @return bool FALSE if failed
     */
    function delete(&$group)
    {
        /**
        * @TODO: Change to if (!(class_exists($this->className) && $obj instanceof $this->className)) when going fully PHP5
        */
        if (!is_a($group, 'xoopsgroup')) {
            return false;
        }
        $sql = sprintf("DELETE FROM %s WHERE groupid = %u", $this->db->prefix('groups'), $group->getVar('groupid'));
        if (!$result = $this->db->query($sql)) {
            return false;
        }
        return true;
    }

    /**
     * retrieve groups from the database
     *
     * @param object $criteria {@link CriteriaElement} with conditions for the groups
     * @param bool $id_as_key should the groups' IDs be used as keys for the associative array?
     * @return mixed Array of groups
     */
    function getObjects($criteria = null, $id_as_key = false)
    {
        $ret = array();
        $limit = $start = 0;
        $sql = 'SELECT * FROM '.$this->db->prefix('groups');
        if (isset($criteria) && is_subclass_of($criteria, 'criteriaelement')) {
            $sql .= ' '.$criteria->renderWhere();
            $limit = $criteria->getLimit();
            $start = $criteria->getStart();
        }
        $result = $this->db->query($sql, $limit, $start);
        if (!$result) {
            return $ret;
        }
        while ($myrow = $this->db->fetchArray($result)) {
            $group = new XoopsGroup();
            $group->assignVars($myrow);
			if (!$id_as_key) {
            	$ret[] =& $group;
			} else {
				$ret[$myrow['groupid']] =& $group;
			}
            unset($group);
        }
        return $ret;
    }
}

/**
 * membership of a user in a group
 *
 * @author Kazumi Ono <[e-mail]>
 * @copyright copyright (c) 2000-2003 XOOPS.org
 * @package kernel
 */
class XoopsMembership extends XoopsObject
{
    /**
     * constructor
     */
    function XoopsMembership()
    {
        $this->XoopsObject();
        $this->initVar('linkid', XOBJ_DTYPE_INT, null, false);
        $this->initVar('groupid', XOBJ_DTYPE_INT, null, false);
        $this->initVar('uid', XOBJ_DTYPE_INT, null, false);
    }
}

/**
* XOOPS membership handler class. (Singleton)
*