mirror of
https://github.com/Lastorder-DC/rhymix.git
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406 lines
14 KiB
PHP
406 lines
14 KiB
PHP
<?php
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/**
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* @class DBMysql
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* @author zero (zero@nzeo.com)
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* @brief MySQL DBMS를 이용하기 위한 class
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* mysql handling class
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**/
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class DBMysql extends DB {
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var $hostname = '127.0.0.1'; ///< hostname
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var $userid = NULL; ///< user id
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var $password = NULL; ///< password
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var $database = NULL; ///< database
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var $prefix = 'zb'; ///< 제로보드에서 사용할 테이블들의 prefix (한 DB에서 여러개의 제로보드 설치 가능)
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/**
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* @brief mysql에서 사용될 column type
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*
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* column_type은 schema/query xml에서 공통 선언된 type을 이용하기 때문에
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* 각 DBMS에 맞게 replace 해주어야 한다
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**/
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var $column_type = array(
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'number' => 'int',
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'varchar' => 'varchar',
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'char' => 'char',
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'text' => 'text',
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'date' => 'varchar(14)',
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);
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/**
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* @brief constructor
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**/
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function DBMysql() {
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$this->_setDBInfo();
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$this->_connect();
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}
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/**
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* @brief DB정보 설정 및 connect/ close
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**/
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function _setDBInfo() {
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$db_info = Context::getDBInfo();
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$this->hostname = $db_info->db_hostname;
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$this->userid = $db_info->db_userid;
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$this->password = $db_info->db_password;
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$this->database = $db_info->db_database;
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$this->prefix = $db_info->db_table_prefix;
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if(!substr($this->prefix,-1)!='_') $this->prefix .= '_';
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}
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/**
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* @brief DB 접속
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**/
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function _connect() {
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// db 정보가 없으면 무시
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if(!$this->hostname || !$this->userid || !$this->password || !$this->database) return;
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// 접속시도
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$this->fd = @mysql_connect($this->hostname, $this->userid, $this->password);
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if(mysql_error()) {
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$this->setError(mysql_errno(), mysql_error());
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return;
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}
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// db 선택
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@mysql_select_db($this->database, $this->fd);
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if(mysql_error()) {
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$this->setError(mysql_errno(), mysql_error());
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return;
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}
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// 접속체크
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$this->is_connected = true;
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// mysql의 경우 utf8임을 지정
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$this->_query("SET NAMES 'utf8'");
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}
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/**
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* @brief DB접속 해제
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**/
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function close() {
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if(!$this->isConnected()) return;
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@mysql_close($this->fd);
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}
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/**
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* @brief 쿼리에서 입력되는 문자열 변수들의 quotation 조절
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**/
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function addQuotes($string) {
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if(get_magic_quotes_gpc()) $string = stripslashes(str_replace("\\","\\\\",$string));
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if(!is_numeric($string)) $string = @mysql_escape_string($string);
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return $string;
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}
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/**
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* @brief : 쿼리문의 실행 및 결과의 fetch 처리
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*
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* query : query문 실행하고 result return\n
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* fetch : reutrn 된 값이 없으면 NULL\n
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* rows이면 array object\n
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* row이면 object\n
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* return\n
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**/
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function _query($query) {
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if(!$this->isConnected()) return;
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$this->query = $query;
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$this->setError(0,'success');
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$result = @mysql_query($query, $this->fd);
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if(mysql_error()) {
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$this->setError(mysql_errno(), mysql_error());
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return;
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}
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return $result;
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}
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/**
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* @brief 결과를 fetch
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**/
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function _fetch($result) {
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if($this->errno!=0 || !$result) return;
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while($tmp = mysql_fetch_object($result)) {
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$output[] = $tmp;
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}
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if(count($output)==1) return $output[0];
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return $output;
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}
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/**
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* @brief 1씩 증가되는 sequence값을 return (mysql의 auto_increment는 sequence테이블에서만 사용)
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**/
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function getNextSequence() {
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$query = sprintf("insert into `%ssequence` (seq) values ('')", $this->prefix);
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$this->_query($query);
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return mysql_insert_id();
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}
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/**
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* @brief 테이블 기생성 여부 return
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**/
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function isTableExists($target_name) {
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$query = sprintf("show tables like '%s%s'", $this->prefix, $this->addQuotes($target_name));
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$result = $this->_query($query);
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$tmp = $this->_fetch($result);
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if(!$tmp) return false;
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return true;
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}
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/**
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* @brief xml 을 받아서 테이블을 생성
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**/
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function createTableByXml($xml_doc) {
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return $this->_createTable($xml_doc);
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}
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/**
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* @brief xml 을 받아서 테이블을 생성
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**/
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function createTableByXmlFile($file_name) {
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if(!file_exists($file_name)) return;
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// xml 파일을 읽음
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$buff = FileHandler::readFile($file_name);
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return $this->_createTable($buff);
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}
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/**
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* @brief schema xml을 이용하여 create table query생성
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*
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* type : number, varchar, text, char, date, \n
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* opt : notnull, default, size\n
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* index : primary key, index, unique\n
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**/
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function _createTable($xml_doc) {
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// xml parsing
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$oXml = new XmlParser();
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$xml_obj = $oXml->parse($xml_doc);
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// 테이블 생성 schema 작성
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$table_name = $xml_obj->table->attrs->name;
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if($this->isTableExists($table_name)) return;
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$table_name = $this->prefix.$table_name;
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if(!is_array($xml_obj->table->column)) $columns[] = $xml_obj->table->column;
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else $columns = $xml_obj->table->column;
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foreach($columns as $column) {
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$name = $column->attrs->name;
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$type = $column->attrs->type;
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$size = $column->attrs->size;
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$notnull = $column->attrs->notnull;
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$primary_key = $column->attrs->primary_key;
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$index = $column->attrs->index;
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$unique = $column->attrs->unique;
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$default = $column->attrs->default;
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$auto_increment = $column->attrs->auto_increment;
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$column_schema[] = sprintf('`%s` %s%s %s %s %s',
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$name,
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$this->column_type[$type],
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$size?'('.$size.')':'',
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$default?"default '".$default."'":'',
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$notnull?'not null':'',
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$auto_increment?'auto_increment':''
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);
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if($primary_key) $primary_list[] = $name;
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else if($unique) $unique_list[$unique][] = $name;
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else if($index) $index_list[$index][] = $name;
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}
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if(count($primary_list)) {
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$column_schema[] = sprintf("primary key (%s)", '`'.implode($primary_list,'`,`').'`');
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}
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if(count($unique_list)) {
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foreach($unique_list as $key => $val) {
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$column_schema[] = sprintf("unique %s (%s)", $key, '`'.implode($val,'`,`').'`');
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}
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}
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if(count($index_list)) {
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foreach($index_list as $key => $val) {
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$column_schema[] = sprintf("index %s (%s)", $key, '`'.implode($val,'`,`').'`');
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}
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}
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$schema = sprintf('create table `%s` (%s%s);', $this->addQuotes($table_name), "\n", implode($column_schema,",\n"));
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$output = $this->_query($schema);
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if(!$output) return false;
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}
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/**
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* @brief 테이블 삭제
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**/
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function dropTable($target_name) {
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$query = sprintf('drop table `%s%s`;', $this->prefix, $this->addQuotes($target_name));
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$this->_query($query);
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}
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/**
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* @brief 테이블의 이름 변경
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**/
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function renameTable($source_name, $targe_name) {
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$query = sprintf("alter table `%s%s` rename `%s%s`;", $this->prefix, $this->addQuotes($source_name), $this->prefix, $this->addQuotes($targe_name));
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$this->_query($query);
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}
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/**
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* @brief 테이블을 비움
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**/
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function truncateTable($target_name) {
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$query = sprintf("truncate table `%s%s`;", $this->prefix, $this->addQuotes($target_name));
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$this->_query($query);
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}
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/**
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* @brief 테이블 데이터 Dump
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*
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* @todo 아직 미구현
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**/
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function dumpTable($target_name) {
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}
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/**
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* @brief insertAct 처리
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**/
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function _executeInsertAct($tables, $column, $pass_quotes) {
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$table = array_pop($tables);
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foreach($column as $key => $val) {
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$key_list[] = $key;
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if(in_array($key, $pass_quotes)) $val_list[] = $this->addQuotes($val);
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else $val_list[] = '\''.$this->addQuotes($val).'\'';
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}
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$query = sprintf("insert into `%s%s` (%s) values (%s);", $this->prefix, $table, '`'.implode('`,`',$key_list).'`', implode(',', $val_list));
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return $this->_query($query);
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}
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/**
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* @brief updateAct 처리
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**/
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function _executeUpdateAct($tables, $column, $condition, $pass_quotes) {
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$table = array_pop($tables);
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foreach($column as $key => $val) {
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if(in_array($key, $pass_quotes)) $update_list[] = sprintf('`%s` = %s', $key, $this->addQuotes($val));
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else $update_list[] = sprintf('`%s` = \'%s\'', $key, $this->addQuotes($val));
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}
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if(!count($update_list)) return;
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$update_query = implode(',',$update_list);
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if($condition) $condition = ' where '.$condition;
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$query = sprintf("update `%s%s` set %s %s;", $this->prefix, $table, $update_query, $condition);
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return $this->_query($query);
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}
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/**
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* @brief deleteAct 처리
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**/
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function _executeDeleteAct($tables, $condition, $pass_quotes) {
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$table = array_pop($tables);
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if($condition) $condition = ' where '.$condition;
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$query = sprintf("delete from `%s%s` %s;", $this->prefix, $table, $condition);
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return $this->_query($query);
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}
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/**
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* @brief selectAct 처리
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*
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* select의 경우 특정 페이지의 목록을 가져오는 것을 편하게 하기 위해\n
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* navigation이라는 method를 제공
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**/
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function _executeSelectAct($tables, $column, $invert_columns, $condition, $navigation, $group_script, $pass_quotes) {
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if(!count($tables)) $table = $this->prefix.array_pop($tables);
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else {
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foreach($tables as $key => $val) $table_list[] = sprintf('%s%s as %s', $this->prefix, $key, $val);
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}
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$table = implode(',',$table_list);
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if(!$column) $columns = '*';
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else {
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foreach($invert_columns as $key => $val) {
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$column_list[] = sprintf('%s as %s',$val, $key);
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}
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$columns = implode(',', $column_list);
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}
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if($condition) $condition = ' where '.$condition;
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if($navigation->list_count) return $this->_getNavigationData($table, $columns, $condition, $navigation);
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$query = sprintf("select %s from %s %s", $columns, $table, $condition);
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$query .= ' '.$group_script;
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if($navigation->index) {
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foreach($navigation->index as $index_obj) {
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$index_list[] = sprintf('%s %s', $index_obj[0], $index_obj[1]);
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}
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if(count($index_list)) $query .= ' order by '.implode(',',$index_list);
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}
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$result = $this->_query($query);
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if($this->errno!=0) return;
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$data = $this->_fetch($result);
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$buff = new Output();
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$buff->data = $data;
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return $buff;
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}
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/**
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* @brief query xml에 navigation 정보가 있을 경우 페이징 관련 작업을 처리한다
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*
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* 그닥 좋지는 않은 구조이지만 편리하다.. -_-;
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**/
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function _getNavigationData($table, $columns, $condition, $navigation) {
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// 전체 개수를 구함
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$count_query = sprintf("select count(*) as count from %s %s", $table, $condition);
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$result = $this->_query($count_query);
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$count_output = $this->_fetch($result);
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$total_count = (int)$count_output->count;
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// 전체 페이지를 구함
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$total_page = (int)(($total_count-1)/$navigation->list_count) +1;
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// 페이지 변수를 체크
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if($navigation->page > $total_page) $page = $navigation->page;
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else $page = $navigation->page;
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$start_count = ($page-1)*$navigation->list_count;
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foreach($navigation->index as $index_obj) {
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$index_list[] = sprintf('%s %s', $index_obj[0], $index_obj[1]);
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}
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$index = implode(',',$index_list);
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$query = sprintf('select %s from %s %s order by %s limit %d, %d', $columns, $table, $condition, $index, $start_count, $navigation->list_count);
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$result = $this->_query($query);
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if($this->errno!=0) return;
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$virtual_no = $total_count - ($page-1)*$navigation->list_count;
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while($tmp = mysql_fetch_object($result)) {
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$data[$virtual_no--] = $tmp;
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}
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$buff = new Output();
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$buff->total_count = $total_count;
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$buff->total_page = $total_page;
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$buff->page = $page;
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$buff->data = $data;
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require_once('./classes/page/PageHandler.class.php');
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$buff->page_navigation = new PageHandler($total_count, $total_page, $page, $navigation->page_count);
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return $buff;
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}
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}
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?>
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