dbmanager.php

讲的是网络编程

<?php
//  ------------------------------------------------------------------------ //
//                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 //
//  ------------------------------------------------------------------------ //
include_once XOOPS_ROOT_PATH.'/class/logger.php';
include_once XOOPS_ROOT_PATH.'/class/database/databasefactory.php';
include_once XOOPS_ROOT_PATH.'/class/database/'.XOOPS_DB_TYPE.'database.php';
include_once XOOPS_ROOT_PATH.'/class/database/sqlutility.php';

/**
* database manager for XOOPS installer
*
* @author Haruki Setoyama  <[e-mail]>
* @version $Id: dbmanager.php 507 2006-05-26 23:39:35Z skalpa $
* @access public
**/
class db_manager {

    var $s_tables = array();
    var $f_tables = array();
	var $db;

    function db_manager(){
        $this->db = XoopsDatabaseFactory::getDatabase();
        $this->db->setPrefix(XOOPS_DB_PREFIX);
        $this->db->setLogger(XoopsLogger::instance());
    }

    function isConnectable(){
        return ($this->db->connect(false) != false) ? true : false;
    }
    
    function dbExists(){
        return ($this->db->connect() != false) ? true : false;
    }
    
    function setDBCharacterset(){
	    $result = true;
	    $charsets = array();
	   	if (defined('_INSTALL_DBCHARSET_INSTALL') && _INSTALL_DBCHARSET_INSTALL) {
		   	$charsets[] = _INSTALL_DBCHARSET_INSTALL;
	   	}
	   	if (defined('_INSTALL_DBCHARSET') && _INSTALL_DBCHARSET) {
		   	$charset[] = _INSTALL_DBCHARSET;
	   	}
	   	foreach ($charsets as $charset) {
		   	$collations = array();
		    if ( $result = $this->db->query("SHOW COLLATION WHERE CHARSET = '{$charset}'") ) {
			    while ( $row = $this->db->fetchArray($result) ) {
					$collations[] = $row["Collation"];
			    }
			    if (!empty($collations)) {
				    $db_charset = $charset;
				    break;
			    }
		    }
	   	}
	   	
	    if (!empty($db_charset)) {
		   	if (defined('_INSTALL_DBCOLLATION_INSTALL') && _INSTALL_DBCOLLATION_INSTALL) {
			    if (in_array(_INSTALL_DBCOLLATION_INSTALL, $collations)) $db_charset .= " COLLATE "._INSTALL_DBCOLLATION_INSTALL;
		    }
		    $result = $this->db->query("ALTER DATABASE `".XOOPS_DB_NAME."` DEFAULT CHARACTER SET {$db_charset}");
	    }
	    return $result;
    }
    
    function createDB()
    {
        $this->db->connect(false);
    
        $result = $this->db->query("CREATE DATABASE ".XOOPS_DB_NAME);
    
        return ($result != false) ? true : false;
    }

    function queryFromFile($sql_file_path){
        $tables = array();

        if (!file_exists($sql_file_path)) {
            return false;
        }
        $sql_query = trim(fread(fopen($sql_file_path, 'r'), filesize($sql_file_path)));
        SqlUtility::splitMySqlFile($pieces, $sql_query);
        $this->db->connect();
        foreach ($pieces as $piece) {
            $piece = trim($piece);
            // [0] contains the prefixed query
            // [4] contains unprefixed table name
            $prefixed_query = SqlUtility::prefixQuery($piece, $this->db->prefix());
            if ($prefixed_query != false ) {
                $table = $this->db->prefix($prefixed_query[4]);
                if($prefixed_query[1] == 'CREATE TABLE'){
                    if ($this->db->query($prefixed_query[0]) != false) {
                        if(! isset($this->s_tables['create'][$table])){
                            $this->s_tables['create'][$table] = 1;
                        }
                    }else{
                        if(! isset($this->f_tables['create'][$table])){
                            $this->f_tables['create'][$table] = 1;
                        }
                    }
                }
                elseif($prefixed_query[1] == 'INSERT INTO'){
                    if ($this->db->query($prefixed_query[0]) != false) {
                        if(! isset($this->s_tables['insert'][$table])){
                            $this->s_tables['insert'][$table] = 1;
                        }else{
                            $this->s_tables['insert'][$table]++;
                        }
                    }else{
                        if(! isset($this->f_tables['insert'][$table])){
                            $this->f_tables['insert'][$table] = 1;
                        }else{
                             $this->f_tables['insert'][$table]++;
                        }
                    }
                }elseif($prefixed_query[1] == 'ALTER TABLE'){
                    if ($this->db->query($prefixed_query[0]) != false) {
                        if(! isset($this->s_tables['alter'][$table])){
                            $this->s_tables['alter'][$table] = 1;
                        }
                    }else{
                        if(! isset($this->s_tables['alter'][$table])){
                            $this->f_tables['alter'][$table] = 1;
                        }
                    }
                }elseif($prefixed_query[1] == 'DROP TABLE'){
                    if ($this->db->query('DROP TABLE '.$table) != false) {
                        if(! isset($this->s_tables['drop'][$table])){
                            $this->s_tables['drop'][$table] = 1;
                        }
                    }else{
                        if(! isset($this->s_tables['drop'][$table])){
                            $this->f_tables['drop'][$table] = 1;
                        }
                    }
                }
            }
        }
        return true;
    }

    function report(){
        $content = "<table align='center'><tr><td align='left'>\n";
        if (isset($this->s_tables['create'])) {
            foreach($this->s_tables['create'] as $key => $val){
                $content .= _OKIMG.sprintf(_INSTALL_L45, "<b>$key</b>")."<br />\n";
            }
        }
        if (isset($this->s_tables['insert'])) {
            foreach($this->s_tables['insert'] as $key => $val){
                $content .= _OKIMG.sprintf(_INSTALL_L119, $val, "<b>$key</b>")."<br />\n";
            }
        }
		if (isset($this->s_tables['alter'])) {
            foreach($this->s_tables['alter'] as $key => $val){
                $content .= _OKIMG.sprintf(_INSTALL_L133, "<b>$key</b>")."<br />\n";
            }
        }
		if (isset($this->s_tables['drop'])) {
            foreach($this->s_tables['drop'] as $key => $val){
                $content .= _OKIMG.sprintf(_INSTALL_L163, "<b>$key</b>")."<br />\n";
            }
        }
        $content .= "<br />\n";
        if (isset($this->f_tables['create'])) {
            foreach($this->f_tables['create'] as $key => $val){
                $content .= _NGIMG.sprintf(_INSTALL_L118, "<b>$key</b>")."<br />\n";
            }
        }
        if (isset($this->f_tables['insert'])) {
            foreach($this->f_tables['insert'] as $key => $val){
                $content .= _NGIMG.sprintf(_INSTALL_L120, $val, "<b>$key</b>")."<br />\n";
            }
        }
		if (isset($this->f_tables['alter'])) {
            foreach($this->f_tables['alter'] as $key => $val){
                $content .= _NGIMG.sprintf(_INSTALL_L134, "<b>$key</b>")."<br />\n";
            }
        }
		if (isset($this->f_tables['drop'])) {
            foreach($this->f_tables['drop'] as $key => $val){
                $content .= _NGIMG.sprintf(_INSTALL_L164, "<b>$key</b>")."<br />\n";
            }
        }
        $content .= "</td></tr></table>\n";
        return $content;
    }

    function query($sql){
        $this->db->connect();
        return $this->db->query($sql);
    }

    function prefix($table){
        $this->db->connect();
        return $this->db->prefix($table);
    }

    function fetchArray($ret){
        $this->db->connect();
        return $this->db->fetchArray($ret);
    }

    function insert($table, $query){
        $this->db->connect();
        $table = $this->db->prefix($table);
        $query = 'INSERT INTO '.$table.' '.$query;
        if(!$this->db->queryF($query)){
        	//var_export($query);
        	//echo '<br />' . mysql_error() . '<br />';
            if(!isset($this->f_tables['insert'][$table])){
                $this->f_tables['insert'][$table] = 1;
            }else{
                $this->f_tables['insert'][$table]++;
            }
            return false;
        }else{
            if(!isset($this->s_tables['insert'][$table])){
                $this->s_tables['insert'][$table] = 1;
            }else{
                $this->s_tables['insert'][$table]++;
            }
            return $this->db->getInsertId();
        }
    }

    function isError(){
        return (isset($this->f_tables)) ? true : false;
    }

    function deleteTables($tables){
        $deleted = array();
        $this->db->connect();
        foreach ($tables as $key => $val) {
            if(! $this->db->query("DROP TABLE ".$this->db->prefix($key))){
                $deleted[] = $ct;
            }
        }
        return $deleted;
    }

	function tableExists($table){
		$table = trim($table);
		$ret = false;
		if ($table != '') {
            $this->db->connect();
			$sql = 'SELECT * FROM '.$this->db->prefix($table);
			$ret = (false != $this->db->query($sql)) ? true : false;
		}
		return $ret;
	}
}

?>