mirror of
https://github.com/Lastorder-DC/rhymix.git
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7715110097
git-svn-id: http://xe-core.googlecode.com/svn/branches/luminous@11570 201d5d3c-b55e-5fd7-737f-ddc643e51545
680 lines
22 KiB
PHP
680 lines
22 KiB
PHP
<?php
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/**
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* Class to use MySQL DBMS
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* mysql handling class
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*
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* Does not use prepared statements, since mysql driver does not support them
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*
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* @author NHN (developers@xpressengine.com)
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* @package /classes/db
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* @version 0.1
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*/
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class DBMysql extends DB {
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/**
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* prefix of a tablename (One or more XEs can be installed in a single DB)
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* @var string
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*/
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var $prefix = 'xe_'; // / <
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var $comment_syntax = '/* %s */';
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/**
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* Column type used in MySQL
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*
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* Becasue a common column type in schema/query xml is used for colum_type,
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* it should be replaced properly for each DBMS
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* @var array
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*/
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var $column_type = array(
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'bignumber' => 'bigint',
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'number' => 'bigint',
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'varchar' => 'varchar',
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'char' => 'char',
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'text' => 'text',
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'bigtext' => 'longtext',
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'date' => 'varchar(14)',
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'float' => 'float',
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);
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/**
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* Constructor
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* @return void
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*/
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function DBMysql() {
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$this->_setDBInfo();
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$this->_connect();
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}
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/**
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* Create an instance of this class
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* @return DBMysql return DBMysql object instance
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*/
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function create() {
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return new DBMysql;
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}
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/**
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* Return if supportable
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* Check 'mysql_connect' function exists.
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* @return boolean
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*/
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function isSupported() {
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if(!function_exists('mysql_connect')) return false;
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return true;
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}
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/**
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* DB Connect
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* this method is private
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* @param array $connection connection's value is db_hostname, db_port, db_database, db_userid, db_password
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* @return resource
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*/
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function __connect($connection) {
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// Ignore if no DB information exists
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if (strpos($connection["db_hostname"], ':') === false && $connection["db_port"])
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$connection["db_hostname"] .= ':' . $connection["db_port"];
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// Attempt to connect
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$result = @mysql_connect($connection["db_hostname"], $connection["db_userid"], $connection["db_password"]);
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if(mysql_error()) {
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$this->setError(mysql_errno(), mysql_error());
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return;
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}
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// Error appears if the version is lower than 4.1
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if(mysql_get_server_info($result)<"4.1") {
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$this->setError(-1, "XE cannot be installed under the version of mysql 4.1. Current mysql version is ".mysql_get_server_info());
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return;
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}
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// select db
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@mysql_select_db($connection["db_database"], $result);
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if(mysql_error()) {
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$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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* If have a task after connection, add a taks in this method
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* this method is private
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* @param resource $connection
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* @return void
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*/
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function _afterConnect($connection){
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// Set utf8 if a database is MySQL
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$this->_query("set names 'utf8'", $connection);
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}
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/**
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* DB disconnection
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* this method is private
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* @param resource $connection
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* @return void
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*/
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function _close($connection) {
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@mysql_close($connection);
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}
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/**
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* Handles quatation of the string variables from the query
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* @param string $string
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* @return string
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*/
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function addQuotes($string) {
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if(version_compare(PHP_VERSION, "5.9.0", "<") && get_magic_quotes_gpc()) $string = stripslashes(str_replace("\\","\\\\",$string));
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if(!is_numeric($string)) $string = @mysql_real_escape_string($string);
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return $string;
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}
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/**
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* DB transaction start
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* this method is private
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* @return boolean
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*/
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function _begin() {
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return true;
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}
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/**
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* DB transaction rollback
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* this method is private
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* @return boolean
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*/
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function _rollback() {
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return true;
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}
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/**
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* DB transaction commit
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* this method is private
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* @return boolean
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*/
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function _commit() {
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return true;
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}
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/**
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* Execute the query
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* this method is private
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* @param string $query
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* @param resource $connection
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* @return resource
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*/
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function __query($query, $connection) {
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// Run the query statement
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$result = mysql_query($query, $connection);
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// Error Check
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if(mysql_error($connection)) $this->setError(mysql_errno($connection), mysql_error($connection));
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// Return result
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return $result;
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}
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/**
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* Fetch the result
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* @param resource $result
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* @param int|NULL $arrayIndexEndValue
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* @return array
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*/
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function _fetch($result, $arrayIndexEndValue = NULL) {
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$output = array();
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if(!$this->isConnected() || $this->isError() || !$result) return $output;
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while($tmp = $this->db_fetch_object($result)) {
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if($arrayIndexEndValue) $output[$arrayIndexEndValue--] = $tmp;
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else $output[] = $tmp;
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}
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if(count($output)==1){
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if(isset($arrayIndexEndValue)) return $output;
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else return $output[0];
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}
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$this->db_free_result($result);
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return $output;
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}
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/**
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* Return the sequence value incremented by 1
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* Auto_increment column only used in the sequence table
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* @return int
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*/
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function getNextSequence() {
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$query = sprintf("insert into `%ssequence` (seq) values ('0')", $this->prefix);
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$this->_query($query);
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$sequence = $this->db_insert_id();
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if($sequence % 10000 == 0) {
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$query = sprintf("delete from `%ssequence` where seq < %d", $this->prefix, $sequence);
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$this->_query($query);
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}
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return $sequence;
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}
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/**
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* Function to obtain mysql old password(mysql only)
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* @param string $password input password
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* @param string $saved_password saved password in DBMS
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* @return boolean
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*/
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function isValidOldPassword($password, $saved_password) {
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$query = sprintf("select password('%s') as password, old_password('%s') as old_password", $this->addQuotes($password), $this->addQuotes($password));
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$result = $this->_query($query);
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$tmp = $this->_fetch($result);
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if($tmp->password == $saved_password || $tmp->old_password == $saved_password) return true;
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return false;
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}
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/**
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* Check a table exists status
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* @param string $target_name
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* @return boolean
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*/
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function isTableExists($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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* Add a column to the table
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* @param string $table_name table name
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* @param string $column_name column name
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* @param string $type column type, default value is 'number'
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* @param int $size column size
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* @param string|int $default default value
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* @param boolean $notnull not null status, default value is false
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* @return void
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*/
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function addColumn($table_name, $column_name, $type='number', $size='', $default = '', $notnull=false) {
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$type = $this->column_type[$type];
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if(strtoupper($type)=='INTEGER') $size = '';
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$query = sprintf("alter table `%s%s` add `%s` ", $this->prefix, $table_name, $column_name);
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if($size) $query .= sprintf(" %s(%s) ", $type, $size);
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else $query .= sprintf(" %s ", $type);
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if($default) $query .= sprintf(" default '%s' ", $default);
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if($notnull) $query .= " not null ";
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return $this->_query($query);
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}
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/**
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* Drop a column from the table
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* @param string $table_name table name
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* @param string $column_name column name
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* @return void
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*/
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function dropColumn($table_name, $column_name) {
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$query = sprintf("alter table `%s%s` drop `%s` ", $this->prefix, $table_name, $column_name);
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$this->_query($query);
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}
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/**
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* Check column exist status of the table
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* @param string $table_name table name
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* @param string $column_name column name
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* @return boolean
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*/
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function isColumnExists($table_name, $column_name) {
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$query = sprintf("show fields from `%s%s`", $this->prefix, $table_name);
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$result = $this->_query($query);
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if($this->isError()) return;
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$output = $this->_fetch($result);
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if($output) {
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$column_name = strtolower($column_name);
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foreach($output as $key => $val) {
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$name = strtolower($val->Field);
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if($column_name == $name) return true;
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}
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}
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return false;
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}
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/**
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* Add an index to the table
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* $target_columns = array(col1, col2)
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* $is_unique? unique : none
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* @param string $table_name table name
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* @param string $index_name index name
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* @param string|array $target_columns target column or columns
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* @param boolean $is_unique
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* @return void
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*/
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function addIndex($table_name, $index_name, $target_columns, $is_unique = false) {
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if(!is_array($target_columns)) $target_columns = array($target_columns);
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$query = sprintf("alter table `%s%s` add %s index `%s` (%s);", $this->prefix, $table_name, $is_unique?'unique':'', $index_name, implode(',',$target_columns));
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$this->_query($query);
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}
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/**
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* Drop an index from the table
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* @param string $table_name table name
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* @param string $index_name index name
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* @param boolean $is_unique
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* @return void
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*/
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function dropIndex($table_name, $index_name, $is_unique = false) {
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$query = sprintf("alter table `%s%s` drop index `%s`", $this->prefix, $table_name, $index_name);
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$this->_query($query);
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}
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/**
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* Check index status of the table
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* @param string $table_name table name
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* @param string $index_name index name
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* @return boolean
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*/
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function isIndexExists($table_name, $index_name) {
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//$query = sprintf("show indexes from %s%s where key_name = '%s' ", $this->prefix, $table_name, $index_name);
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$query = sprintf("show indexes from `%s%s`", $this->prefix, $table_name);
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$result = $this->_query($query);
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if($this->isError()) return;
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$output = $this->_fetch($result);
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if(!$output) return;
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if(!is_array($output)) $output = array($output);
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for($i=0;$i<count($output);$i++) {
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if($output[$i]->Key_name == $index_name) return true;
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}
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return false;
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}
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/**
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* Creates a table by using xml contents
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* @param string $xml_doc xml schema contents
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* @return void|object
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*/
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function createTableByXml($xml_doc) {
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return $this->_createTable($xml_doc);
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}
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/**
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* Creates a table by using xml file path
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* @param string $file_name xml schema file path
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* @return void|object
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*/
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function createTableByXmlFile($file_name) {
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if(!file_exists($file_name)) return;
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// read xml file
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$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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* Create table by using the schema xml
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*
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* type : number, varchar, tinytext, text, bigtext, 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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* @param string $xml_doc xml schema contents
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* @return void|object
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*/
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function _createTable($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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// Create a table schema
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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 = $xml_obj->table->column;
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$primary_list = array();
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$unique_list = array();
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$index_list = array();
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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?'('.$size.')':'',
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isset($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) %s;', $this->addQuotes($table_name), "\n", implode($column_schema,",\n"), "ENGINE = MYISAM CHARACTER SET utf8 COLLATE utf8_general_ci");
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$output = $this->_query($schema);
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if(!$output) return false;
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}
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/**
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* Handles insertAct
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* @param Object $queryObject
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* @param boolean $with_values
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* @return resource
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*/
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function _executeInsertAct($queryObject, $with_values = true) {
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$query = $this->getInsertSql($queryObject, $with_values, true);
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$query .= (__DEBUG_QUERY__ & 1 && $this->query_id) ? sprintf(' ' . $this->comment_syntax, $this->query_id) : '';
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if(is_a($query, 'Object')) return;
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return $this->_query($query);
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}
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/**
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* Handles updateAct
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* @param Object $queryObject
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* @param boolean $with_values
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* @return resource
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*/
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function _executeUpdateAct($queryObject, $with_values = true) {
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$query = $this->getUpdateSql($queryObject, $with_values, true);
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$query .= (__DEBUG_QUERY__ & 1 && $this->query_id) ? sprintf(' ' . $this->comment_syntax, $this->query_id) : '';
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if(is_a($query, 'Object')) return;
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return $this->_query($query);
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}
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/**
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* Handles deleteAct
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* @param Object $queryObject
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* @param boolean $with_values
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* @return resource
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*/
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function _executeDeleteAct($queryObject, $with_values = true) {
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$query = $this->getDeleteSql($queryObject, $with_values, true);
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$query .= (__DEBUG_QUERY__ & 1 && $this->query_id) ? sprintf(' ' . $this->comment_syntax, $this->query_id) : '';
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if(is_a($query, 'Object')) return;
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return $this->_query($query);
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}
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/**
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* Handle selectAct
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* In order to get a list of pages easily when selecting \n
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* it supports a method as navigation
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* @param Object $queryObject
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* @param resource $connection
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* @param boolean $with_values
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* @return Object
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*/
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function _executeSelectAct($queryObject, $connection = null, $with_values = true) {
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$limit = $queryObject->getLimit();
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$result = NULL;
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if ($limit && $limit->isPageHandler())
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return $this->queryPageLimit($queryObject, $result, $connection, $with_values);
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else {
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$query = $this->getSelectSql($queryObject, $with_values);
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if (is_a($query, 'Object'))
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return;
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$query .= (__DEBUG_QUERY__ & 1 && $queryObject->queryID) ? sprintf(' ' . $this->comment_syntax, $queryObject->queryID) : '';
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$result = $this->_query($query, $connection);
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if ($this->isError())
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return $this->queryError($queryObject);
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$data = $this->_fetch($result);
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$buff = new Object ();
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$buff->data = $data;
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return $buff;
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}
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}
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/**
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* Get the ID generated in the last query
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* Return next sequence from sequence table
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* This method use only mysql
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* @return int
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*/
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function db_insert_id()
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{
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$connection = $this->_getConnection('master');
|
|
return mysql_insert_id($connection);
|
|
}
|
|
|
|
/**
|
|
* Fetch a result row as an object
|
|
* @param resource $result
|
|
* @return object
|
|
*/
|
|
function db_fetch_object(&$result)
|
|
{
|
|
return mysql_fetch_object($result);
|
|
}
|
|
|
|
/**
|
|
* Free result memory
|
|
* @param resource $result
|
|
* @return boolean Returns TRUE on success or FALSE on failure.
|
|
*/
|
|
function db_free_result(&$result){
|
|
return mysql_free_result($result);
|
|
}
|
|
|
|
/**
|
|
* Return the DBParser
|
|
* @param boolean $force
|
|
* @return DBParser
|
|
*/
|
|
function &getParser($force = FALSE){
|
|
$dbParser = new DBParser('`', '`', $this->prefix);
|
|
return $dbParser;
|
|
}
|
|
|
|
/**
|
|
* If have a error, return error object
|
|
* @param Object $queryObject
|
|
* @return Object
|
|
*/
|
|
function queryError($queryObject){
|
|
$limit = $queryObject->getLimit();
|
|
if ($limit && $limit->isPageHandler()){
|
|
$buff = new Object ();
|
|
$buff->total_count = 0;
|
|
$buff->total_page = 0;
|
|
$buff->page = 1;
|
|
$buff->data = array ();
|
|
$buff->page_navigation = new PageHandler (/*$total_count*/0, /*$total_page*/1, /*$page*/1, /*$page_count*/10);//default page handler values
|
|
return $buff;
|
|
}else
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* If select query execute, return page info
|
|
* @param Object $queryObject
|
|
* @param resource $result
|
|
* @param resource $connection
|
|
* @param boolean $with_values
|
|
* @return Object Object with page info containing
|
|
*/
|
|
function queryPageLimit($queryObject, $result, $connection, $with_values = true){
|
|
$limit = $queryObject->getLimit();
|
|
// Total count
|
|
$temp_where = $queryObject->getWhereString($with_values, false);
|
|
$count_query = sprintf('select count(*) as "count" %s %s', 'FROM ' . $queryObject->getFromString($with_values), ($temp_where === '' ? '' : ' WHERE '. $temp_where));
|
|
|
|
// Check for distinct query and if found update count query structure
|
|
$temp_select = $queryObject->getSelectString($with_values);
|
|
$uses_distinct = strpos(strtolower($temp_select), "distinct") !== false;
|
|
$uses_groupby = $queryObject->getGroupByString() != '';
|
|
if($uses_distinct || $uses_groupby) {
|
|
$count_query = sprintf('select %s %s %s %s'
|
|
, $temp_select == '*' ? '1' : $temp_select
|
|
, 'FROM ' . $queryObject->getFromString($with_values)
|
|
, ($temp_where === '' ? '' : ' WHERE '. $temp_where)
|
|
, ($uses_groupby ? ' GROUP BY ' . $queryObject->getGroupByString() : '')
|
|
);
|
|
|
|
// If query uses grouping or distinct, count from original select
|
|
$count_query = sprintf('select count(*) as "count" from (%s) xet', $count_query);
|
|
}
|
|
|
|
$count_query .= (__DEBUG_QUERY__&1 && $queryObject->queryID)?sprintf (' '.$this->comment_syntax, $queryObject->queryID):'';
|
|
$result_count = $this->_query($count_query, $connection);
|
|
$count_output = $this->_fetch($result_count);
|
|
$total_count = (int)(isset($count_output->count) ? $count_output->count : NULL);
|
|
|
|
$list_count = $limit->list_count->getValue();
|
|
if (!$list_count) $list_count = 20;
|
|
$page_count = $limit->page_count->getValue();
|
|
if (!$page_count) $page_count = 10;
|
|
$page = $limit->page->getValue();
|
|
if (!$page) $page = 1;
|
|
|
|
// total pages
|
|
if ($total_count)
|
|
$total_page = (int) (($total_count - 1) / $list_count) + 1;
|
|
else
|
|
$total_page = 1;
|
|
|
|
// check the page variables
|
|
if ($page > $total_page) {
|
|
// If requested page is bigger than total number of pages, return empty list
|
|
$buff = new Object ();
|
|
$buff->total_count = $total_count;
|
|
$buff->total_page = $total_page;
|
|
$buff->page = $page;
|
|
$buff->data = array();
|
|
$buff->page_navigation = new PageHandler($total_count, $total_page, $page, $page_count);
|
|
return $buff;
|
|
}
|
|
$start_count = ($page - 1) * $list_count;
|
|
|
|
$query = $this->getSelectPageSql($queryObject, $with_values, $start_count, $list_count);
|
|
|
|
$query .= (__DEBUG_QUERY__&1 && $queryObject->query_id)?sprintf (' '.$this->comment_syntax, $this->query_id):'';
|
|
$result = $this->_query ($query, $connection);
|
|
if ($this->isError ())
|
|
return $this->queryError($queryObject);
|
|
|
|
$virtual_no = $total_count - ($page - 1) * $list_count;
|
|
$data = $this->_fetch($result, $virtual_no);
|
|
|
|
$buff = new Object ();
|
|
$buff->total_count = $total_count;
|
|
$buff->total_page = $total_page;
|
|
$buff->page = $page;
|
|
$buff->data = $data;
|
|
$buff->page_navigation = new PageHandler($total_count, $total_page, $page, $page_count);
|
|
return $buff;
|
|
}
|
|
|
|
/**
|
|
* If select query execute, return paging sql
|
|
* @param object $query
|
|
* @param boolean $with_values
|
|
* @param int $start_count
|
|
* @param int $list_count
|
|
* @return string select paging sql
|
|
*/
|
|
function getSelectPageSql($query, $with_values = true, $start_count = 0, $list_count = 0) {
|
|
$select = $query->getSelectString($with_values);
|
|
if($select == '') return new Object(-1, "Invalid query");
|
|
$select = 'SELECT ' .$select;
|
|
|
|
$from = $query->getFromString($with_values);
|
|
if($from == '') return new Object(-1, "Invalid query");
|
|
$from = ' FROM '.$from;
|
|
|
|
$where = $query->getWhereString($with_values);
|
|
if($where != '') $where = ' WHERE ' . $where;
|
|
|
|
$groupBy = $query->getGroupByString();
|
|
if($groupBy != '') $groupBy = ' GROUP BY ' . $groupBy;
|
|
|
|
$orderBy = $query->getOrderByString();
|
|
if($orderBy != '') $orderBy = ' ORDER BY ' . $orderBy;
|
|
|
|
$limit = $query->getLimitString();
|
|
if ($limit != '') $limit = sprintf (' LIMIT %d, %d', $start_count, $list_count);
|
|
|
|
return $select . ' ' . $from . ' ' . $where . ' ' . $groupBy . ' ' . $orderBy . ' ' . $limit;
|
|
}
|
|
}
|
|
?>
|