avatar.php

讲的是网络编程

<?php
// $Id: avatar.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();
}

class XoopsAvatar extends XoopsObject
{
    var $_userCount;

    function XoopsAvatar()
    {
        $this->XoopsObject();
        $this->initVar('avatar_id', XOBJ_DTYPE_INT, null, false);
        $this->initVar('avatar_file', XOBJ_DTYPE_OTHER, null, false, 30);
        $this->initVar('avatar_name', XOBJ_DTYPE_TXTBOX, null, true, 100);
        $this->initVar('avatar_mimetype', XOBJ_DTYPE_OTHER, null, false);
        $this->initVar('avatar_created', XOBJ_DTYPE_INT, null, false);
        $this->initVar('avatar_display', XOBJ_DTYPE_INT, 1, false);
        $this->initVar('avatar_weight', XOBJ_DTYPE_INT, 0, false);
        $this->initVar('avatar_type', XOBJ_DTYPE_OTHER, 0, false);
    }

    function setUserCount($value)
    {
        $this->_userCount = intval($value);
    }

    function getUserCount()
    {
        return $this->_userCount;
    }
}


/**
* XOOPS avatar handler class.
* This class is responsible for providing data access mechanisms to the data source
* of XOOPS avatar class objects.
*
*
* @author  Kazumi Ono <[e-mail]>
*/

class XoopsAvatarHandler extends XoopsObjectHandler
{

    function &create($isNew = true)
    {
        $avatar = new XoopsAvatar();
        if ($isNew) {
            $avatar->setNew();
        }
        return $avatar;
    }

    function &get($id)
    {
        $avatar = false;
    	$id = intval($id);
        if ($id > 0) {
            $sql = 'SELECT * FROM '.$this->db->prefix('avatar').' WHERE avatar_id='.$id;
            if (!$result = $this->db->query($sql)) {
                return false;
            }
            $numrows = $this->db->getRowsNum($result);
            if ($numrows == 1) {
                $avatar = new XoopsAvatar();
                $avatar->assignVars($this->db->fetchArray($result));
                return $avatar;
            }
        }
        return $avatar;
    }

    function insert(&$avatar)
    {
        /**
        * @TODO: Change to if (!(class_exists($this->className) && $obj instanceof $this->className)) when going fully PHP5
        */
        if (!is_a($avatar, 'xoopsavatar')) {
            return false;
        }
        if (!$avatar->isDirty()) {
            return true;
        }
        if (!$avatar->cleanVars()) {
            return false;
        }
        foreach ($avatar->cleanVars as $k => $v) {
            ${$k} = $v;
        }
        if ($avatar->isNew()) {
            $avatar_id = $this->db->genId('avatar_avatar_id_seq');
            $sql = sprintf("INSERT INTO %s (avatar_id, avatar_file, avatar_name, avatar_created, avatar_mimetype, avatar_display, avatar_weight, avatar_type) VALUES (%u, %s, %s, %u, %s, %u, %u, %s)", $this->db->prefix('avatar'), $avatar_id, $this->db->quoteString($avatar_file), $this->db->quoteString($avatar_name), time(), $this->db->quoteString($avatar_mimetype), $avatar_display, $avatar_weight, $this->db->quoteString($avatar_type));
        } else {
            $sql = sprintf("UPDATE %s SET avatar_file = %s, avatar_name = %s, avatar_created = %u, avatar_mimetype= %s, avatar_display = %u, avatar_weight = %u, avatar_type = %s WHERE avatar_id = %u", $this->db->prefix('avatar'), $this->db->quoteString($avatar_file), $this->db->quoteString($avatar_name), $avatar_created, $this->db->quoteString($avatar_mimetype), $avatar_display, $avatar_weight, $this->db->quoteString($avatar_type), $avatar_id);
        }
        if (!$result = $this->db->query($sql)) {
            return false;
        }
        if (empty($avatar_id)) {
            $avatar_id = $this->db->getInsertId();
        }
        $avatar->assignVar('avatar_id', $avatar_id);
        return true;
    }

    function delete(&$avatar)
    {
        /**
        * @TODO: Change to if (!(class_exists($this->className) && $obj instanceof $this->className)) when going fully PHP5
        */
        if (!is_a($avatar, 'xoopsavatar')) {
            return false;
        }


        $id = $avatar->getVar('avatar_id');
        $sql = sprintf("DELETE FROM %s WHERE avatar_id = %u", $this->db->prefix('avatar'), $id);
        if (!$result = $this->db->query($sql)) {
            return false;
        }
        $sql = sprintf("DELETE FROM %s WHERE avatar_id = %u", $this->db->prefix('avatar_user_link'), $id);
		$result = $this->db->query($sql);
        return true;
    }

    function &getObjects($criteria = null, $id_as_key = false)
    {
        $ret = array();
        $limit = $start = 0;
        $sql = 'SELECT a.*, COUNT(u.user_id) AS count FROM '.$this->db->prefix('avatar').' a LEFT JOIN '.$this->db->prefix('avatar_user_link').' u ON u.avatar_id=a.avatar_id';
        if (isset($criteria) && is_subclass_of($criteria, 'criteriaelement')) {
            $sql .= ' '.$criteria->renderWhere();
            $sql .= ' GROUP BY a.avatar_id ORDER BY avatar_weight, avatar_id';
            $limit = $criteria->getLimit();
            $start = $criteria->getStart();
        }
        $result = $this->db->query($sql, $limit, $start);
        if (!$result) {
            return $ret;
        }
        while ($myrow = $this->db->fetchArray($result)) {
            $avatar = new XoopsAvatar();
            $avatar->assignVars($myrow);
            $avatar->setUserCount($myrow['count']);
            if (!$id_as_key) {
                $ret[] =& $avatar;
            } else {
                $ret[$myrow['avatar_id']] =& $avatar;
            }
            unset($avatar);
        }
        return $ret;
    }

    function getCount($criteria = null)
    {
        $sql = 'SELECT COUNT(*) FROM '.$this->db->prefix('avatar');
        if (isset($criteria) && is_subclass_of($criteria, 'criteriaelement')) {
            $sql .= ' '.$criteria->renderWhere();
        }
        if (!$result =& $this->db->query($sql)) {
            return 0;
        }
        list($count) = $this->db->fetchRow($result);
        return $count;
    }

    function addUser($avatar_id, $user_id){
        $avatar_id = intval($avatar_id);
        $user_id = intval($user_id);
        if ($avatar_id < 1 || $user_id < 1) {
            return false;
        }
        $sql = sprintf("DELETE FROM %s WHERE user_id = %u", $this->db->prefix('avatar_user_link'), $user_id);
        $this->db->query($sql);
        $sql = sprintf("INSERT INTO %s (avatar_id, user_id) VALUES (%u, %u)", $this->db->prefix('avatar_user_link'), $avatar_id, $user_id);
        if (!$result =& $this->db->query($sql)) {
            return false;
        }
        return true;
    }

    function getUser(&$avatar){
        $ret = array();

        /**
        * @TODO: Change to if (!(class_exists($this->className) && $obj instanceof $this->className)) when going fully PHP5
        */
        if (!is_a($avatar, 'xoopsavatar')) {
            return false;
        }

        $sql = 'SELECT user_id FROM '.$this->db->prefix('avatar_user_link').' WHERE avatar_id='.$avatar->getVar('avatar_id');
        if (!$result = $this->db->query($sql)) {
            return $ret;
        }
        while ($myrow = $this->db->fetchArray($result)) {
            $ret[] =& $myrow['user_id'];
        }
        return $ret;
    }

    function getList($avatar_type = null, $avatar_display = null)
    {
        $criteria = new CriteriaCompo();
        if (isset($avatar_type)) {
            $avatar_type = ($avatar_type == 'C') ? 'C' : 'S';
            $criteria->add(new Criteria('avatar_type', $avatar_type));
        }
        if (isset($avatar_display)) {
            $criteria->add(new Criteria('avatar_display', intval($avatar_display)));
        }
        $avatars =& $this->getObjects($criteria, true);
        $ret = array('blank.gif' => _NONE);
        foreach (array_keys($avatars) as $i) {
            $ret[$avatars[$i]->getVar('avatar_file')] = $avatars[$i]->getVar('avatar_name');
        }
        return $ret;
    }
}
?>