mirror of
https://github.com/Chouchen/shorturl.git
synced 2018-06-07 06:34:38 +02:00
737 lines
27 KiB
PHP
737 lines
27 KiB
PHP
<?
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include 'log.php';
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class XMLSQL{
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const SELECT = 'select';
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const INSERT = 'insert';
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const DELETE = 'delete';
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const UPDATE = 'update';
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/**
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* Request
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*/
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protected $current_request;
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protected $operation;
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protected $from;
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protected $setID;
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protected $setChild;
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protected $whereID;
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protected $whereChildren;
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protected $position;
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protected $limit;
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// Path and name to the file
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protected $_file;
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// Primary key
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protected $_primaryKey;
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// Selected table
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protected $_table;
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// XPATH of the doc
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protected $_xpath;
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// Content of the XML DB File
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protected $_doc;
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// Name of the main root
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protected $_databaseName;
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// Name of each table root
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protected $_tableName;
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// Name of each item inside tables
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protected $_itemName;
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// Encoding used for the XML
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protected $_encoding;
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// Node buffered
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protected $_buffer;
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public $_debug = true;
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public $_log;
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/**
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* Constructor
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* @param $file string path to the file to read/create
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* @param $pk string name of the primary key
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* @param $createIfNotExist bool create the file if it doesn't exist
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*/
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public function __construct($file, $pk = "id", $createIfNotExist = false, $databaseName = "Database", $tableName = "table", $itemName = "item", $encoding = "utf-8"){
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if($this->_debug) $this->_log = new Log('log.dat');
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$this->_buffer = null;
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$this->_databaseName = $databaseName;
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$this->_itemName = $itemName;
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$this->_tableName = $tableName;
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$this->_encoding = $encoding;
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$this->_primaryKey = $pk;
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$this->_file = $file;
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$this->_doc = new DOMDocument;
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$this->_doc->preserveWhiteSpace = false;
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$this->_doc->formatOutput = true;
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if($this->_doc->load($this->_file)){
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if($this->_debug)
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$this->_log->message('DB lue.');
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$this->_xpath = new DOMXpath($this->_doc);
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}
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else{
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if($createIfNotExist){
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if($this->_debug)
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$this->_log->message('création de la DB.');
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$this->createDatabase($file);
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}else{
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if($this->_debug)
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$this->_log->error('fichier non trouvé lors de la création de l\'instance.');
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$this->_file = null;
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$this->_doc = null;
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$this->xpath = null;
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}
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}
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}
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public function __destruct(){
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if($this->_debug)
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$this->_log->message('fin d\'execution du script.');
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$this->commit();
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}
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public function createDatabase($file){
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$this->_file = $file;
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$this->_doc = DOMDocument::loadXML('<?xml version="1.0" encoding="' . $this->_encoding . '"?>
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<' . $this->_databaseName . '>
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</' . $this->_databaseName . '>');
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$this->_xpath = new DOMXpath($this->_doc);
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if($this->_debug)
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$this->_log->message('DB créée en cache.');
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return $this->commit();
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}
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public function dropDatabase($definitely = false){
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if($definitely){
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if($this->_debug)
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$this->_log->message('fichier supprimé.');
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unlink($this->_file);
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}else{
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$this->createDatabase($this->_file);
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if($this->_debug)
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$this->_log->message('DB effacée.');
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}
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}
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/**
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* @return bool
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*/
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public function tableAlreadyExists($tableName){
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$request = $this->_xpath->query('//' . $this->_tableName . '[@name = "'.$tableName.'"]');
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if($this->_debug) $this->_log->message('Requête "tableAlreadyExist" : //' . $this->_tableName . '[@name = "'.$tableName.'"]');
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if($this->getResult($request, 'count') >= 1)
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return true;
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return false;
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}
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public function isTableAI($tableName){
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if($this->tableAlreadyExists($tableName)){
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$table = $this->_xpath->query('//' . $this->_tableName . '[@name = "'.$tableName.'"]');
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$ai = $this->_getAttribute('autoincrement', $table);
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if($ai == 'true')
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return true;
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}
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return false;
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}
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public function isLoaded(){
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if($this->_doc != null)
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return true;
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else
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return false;
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}
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public function setPrimaryKey($pk){
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$this->_primaryKey = $pk;
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}
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public function getPrimaryKey(){
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return $this->_primaryKey;
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}
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public function getXPath(){
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return $this->_xpath;
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}
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public function setBuffer($node){
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$this->_buffer = $node;
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}
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public function getBuffer($buffer){
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return $this->_buffer;
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}
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/**
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* Saving the DB file
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*/
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public function commit(){
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if($this->_doc != null && $this->_file != null){
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$this->_doc->preserveWhiteSpace = false;
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$this->_doc->formatOutput = true;
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$this->_doc->save($this->_file);
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if($this->_debug)
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$this->_log->message('DB sauvegardée.');
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return true;
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}else{
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if($this->_debug)
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$this->_log->error('Erreur lors de l\'enregistrement.');
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return false;
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}
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}
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public function createTable($name, $autoincrement = false, $aiDefaultValue = 0){
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if($name == '*' || $this->tableAlreadyExists($name))
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return false;
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else{
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if($autoincrement)
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return $this->_insert(array('name'=>$this->_tableName, 'attributes'=>array('name'=>$name, 'autoincrement'=>'true', 'aivalue'=>$aiDefaultValue)));
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else
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return $this->_insert(array('name'=>$this->_tableName, 'attributes'=>array('name'=>$name)));
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}
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}
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public function dropTable($table){
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return $this->_delete($table);
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}
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private function updateTableAIValue($tableName){
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if($this->tableAlreadyExists($tableName)){
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//$table = $this->selectTable($table);
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$table = $this->_xpath->query('//' . $this->_tableName . '[@name = "'.$tableName.'"]');
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$newValue = (int)$table->item(0)->getAttribute('aivalue') + 1;
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$table->item(0)->setAttribute('aivalue', $newValue);
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if($this->_debug)
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$this->_log->message('Nouvelle increment pour la table '.$tableName.' : '.$newValue);
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return $newValue;
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}
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if($this->_debug)
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$this->_log->error('Erreur lors de l\'attribution du nouvel increment de la table '.$table);
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return false;
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}
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private function _getNewIncrement($table){
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return $this->updateTableAIValue($table);
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}
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// TODO sur toutes les tables
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public function pkAlreadyExists($pk, $table = '*'){
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// if($this->selectFromPK($table, $pk , 'count') > 0){
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$tableTemp = $this->_xpath->query('//' . $this->_tableName . '[@name = "'.$table.'"]/item[@'.$this->_primaryKey.' = "'.$pk.'"]');
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if($tableTemp->length > 0){
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if($this->_debug) $this->_log->message('table '.$table.' already have '.$pk.' as a key');
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return true;
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}
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if($this->_debug) $this->_log->message('table '.$table.' doesn\'t have '.$pk.' as a key');
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return false;
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}
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private function getResult($request, $format){
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switch($format){
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case "node":
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return $request;
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break;
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case "count":
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return $request->length;
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break;
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case "array":
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default:
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return $this->requestToArray($request);
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}
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}
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public function select($what = array('*')){
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if($this->_debug)
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$this->_log->message('Construction de la requête "SELECT" :'.implode(', ',$what));
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$this->current_request = self::SELECT;
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$this->operation = $what;
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return $this;
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}
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public function insert(array $what = null, $id = null){
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if($this->_debug)
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$this->_log->message('Construction de la requête "INSERT"');
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$this->current_request = self::INSERT;
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if($what != null){
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$this->operation = $what;
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if($this->_debug) $this->_log->message('inserting : '.implode(', ', $what));
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}
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else{
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throw new Exception('You must indicate something to insert');
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if($this->_debug)
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$this->_log->error('Parameter for "INSERT" was wrong or empty.');
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}
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$this->setID = $id;
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if($this->_debug && $id!=null) $this->_log->message('ID = '.$id);
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return $this;
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}
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public function delete(){
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if($this->_debug)
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$this->_log->message('Construction de la requête "DELETE"');
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$this->current_request = self::DELETE;
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return $this;
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}
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// TODO
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public function update($from){
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$this->current_request = self::UPDATE;
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$this->from = $from;
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if($this->_debug)
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$this->_log->message('Construction de la requête "UPDATE" : FROM = '.$this->from);
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return $this;
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}
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public function from($from){
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if($this->tableAlreadyExists($from))
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$this->from = $from;
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else
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$this->from = '*';
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if($this->_debug)
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$this->_log->message('Construction de la requête : FROM = '.$this->from);
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return $this;
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}
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public function into($to){
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if($this->tableAlreadyExists($to))
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$this->from = $to;
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else
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throw new Exception('This table doesn\'t exist');
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if($this->_debug)
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$this->_log->message('Construction de la requête : INTO = '.$this->from);
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return $this;
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}
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public function limit($numStart=0, $numFinish=null){
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if(is_int($numStart)){
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if(isset($numFinish) && is_int($numFinish))
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$this->limit = array($numStart, $numFinish);
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else
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$this->limit = $numStart;
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if($this->_debug) $this->_log->message('Construction de la requête : LIMIT = '.$this->limit);
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}else{
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if($this->_debug) $this->_log->error('Construction de la requête : les limites ne sont pas des entiers : '.$numStart.' et '.$numFinish);
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}
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return $this;
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}
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public function set(array $setChild = null, array $setID = null){
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$this->setID = $setID;
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$this->setChild = $setChild;
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if($this->_debug)
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$this->_log->message('Construction de la requête : SET ID = '.$this->setID.' OR CHILD = '.$this->setChild);
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return $this;
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}
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public function where($whereID = null, array $whereChildren = null){
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$this->whereID = $whereID;
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$this->whereChildren = $whereChildren;
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if($this->_debug)
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$this->_log->message('Construction de la requête : WHERE ID = "'.$this->whereID.'" OR child = "'.$this->whereChildren.'"');
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return $this;
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}
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public function toPosition($to){
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if(is_numeric($to)){
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$this->position = $to;
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if($this->_debug)
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$this->_log->message('Construction de la requête : TO = '.$this->position);
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}else if($this->_debug)
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$this->_log->error('The position enter wasn\'t a number.');
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return $this;
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}
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public function query(){
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$stmt = $this->_prepareStmt();
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/*if(is_bool($stmt) || is_array($stmt) || is_string($stmt)){
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if($this->_debug && $stmt)
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$this->_log->message('Requête réussie.');
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else
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$this->_log->error('Requête erronée.');
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return $stmt;
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}*/
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if(is_bool($stmt)){
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if($this->_debug)
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$this->_log->message('Resultat de la requete : '.$stmt);
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return $stmt;
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}
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return $this->_requestToArray($stmt);
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}
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private function _prepareStmt(){
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switch($this->current_request){
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case self::SELECT:
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return $this->_select($this->operation, $this->from, $this->whereID, $this->whereChildren, '/'.$this->_itemName);
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break;
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case self::INSERT:
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return $this->_insertItem($this->setID, null, $this->operation, $this->from, $this->position);
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break;
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case self::DELETE:
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return $this->_delete($this->from, $this->whereID);
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break;
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case self::UPDATE:
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return $this->_update($this->from, $this->setID, $this->setChild, $this->whereID, $this->whereChildren);
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break;
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default:
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throw new Exception('no request detected.');
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break;
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}
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}
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private function _getAttribute($attribute, $node){
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if($node->length == 1){
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return $node->item(0)->getAttribute($attribute);
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}else{
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return false;
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}
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}
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private function _getChildValue($child, $node){
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$nodeArray = array();
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if($node->length == 1){
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$nodeArray = $this->_requestToArray($node);
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if(isset($nodeArray[0]['childs'][$child]))
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return $nodeArray[0]['childs'][$child];
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}
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return false;
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}
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private function _cleanRequest(){
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$this->operation = null;
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$this->from = null;
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$this->whereID = null;
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$this->whereChildren = null;
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$this->position = null;
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$this->limit = null;
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$this->setChild = null;
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$this->setID = null;
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}
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private function _requestToArray($request){
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$return = array();
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$number = 0;
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$what = $this->operation;
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if(count($what) == 1 && $what[0] != '*'){
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$return = array();
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foreach($request as $element){
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$nodes = $element->childNodes;
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$length = $nodes->length;
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for ($i = 0; $i <= $length -1; $i++) {
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if($nodes->item($i)->nodeName == $what[0])
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$return[] = $nodes->item($i)->nodeValue;
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}
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}
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$this->_cleanRequest();
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if($this->_debug) $this->_log->message('Resultat de la requete : '.implode(', ', $return));
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return $return;
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}
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foreach($request as $element){
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/*if($childName != null && $childValue != null)
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$element = $element->parentNode;*/
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$elementValue = $element->attributes->item(0)->value;
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$return[$number]['name'] = $this->_itemName;
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$return[$number]['attributes'] = array($this->_primaryKey => $elementValue);
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$return[$number]['childs'] = array();
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//Retrieving Attributes
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$attributes = $element->attributes;
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$length = $attributes->length;
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for ($i = 0; $i <= $length -1 ; $i++) {
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if($attributes->item($i)->name != '')
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$return[$number]['attributes'][$attributes->item($i)->name] = $attributes->item($i)->value;
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}
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// Retrivieving childs
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$nodes = $element->childNodes;
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$length = $nodes->length;
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for ($i = 0; $i <= $length -1; $i++) {
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if($nodes->item($i)->nodeName != '')
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$return[$number]['childs'][$nodes->item($i)->nodeName] = $nodes->item($i)->nodeValue;
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}
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$number++;
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}
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if(isset($this->limit) && is_array($this->limit)){
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krsort($return);
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$limit = $this->limit;
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$return = array_slice($return, $limit[0], $limit[1]);
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}else if(is_int($this->limit) && $this->limit != 0){
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krsort($return);
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$return = array_slice($return, 0, $this->limit);
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}
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if($this->_debug) {
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$debug_text = '';
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foreach($return as $indice=>$value)
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$debug_text .= $indice.'=>'.$value;
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$this->_log->message('Request to array => result : '.$debug_text);
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}
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$this->_cleanRequest();
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if($this->_debug) $this->_log->message('Resultat de la requete : '.implode(', ', $return));
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return $return;
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}
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//TODO forceinsert?
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private function _update($from, $setID = null, $setChild = null, $whereID = null, $whereChildren = null, $forceInsert = false){
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$node = $this->_select(array('*'), $from, $whereID, $whereChildren, '/'.$this->_itemName);
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$nodeArray = $this->_requestToArray($node);
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if($node != null && $nodeArray != null){
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if($setChild != null){
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if($this->_debug) $this->_log->message('Updating '.count($setChild).' children');
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foreach($setChild as $indice=>$value)
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$this->_updateChildValue($from, $node, $indice, $value);
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}
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// $this->updateChildValue($from, $node, $setChild, $forceInsert);
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if($setID != null){
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if($this->_debug) $this->_log->message('Updating ID '.$nodeArray[0]["attributes"][$this->_primaryKey].' into '.$setID);
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$this->_updateItemID($from, $nodeArray, $setID, $forceInsert);
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}
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return true;
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}else{
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return false;
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}
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}
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//TODO requete pour recevoir plusieurs valeurs what
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private function _select(array $what, $from, $id = null, $childs = null, $item = ''){
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$attribute = '';
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$child = '';
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if($id != null && !is_array($id)){
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$attribute = '[@' . $this->_primaryKey . ' = "' . $id . '"]';
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}
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if($childs != null && is_array($childs)){
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foreach($childs as $childName=>$childValue)
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$child .= '[' . $childName . '="' . $childValue . '"]';
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}
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if($from == '*')
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$request = $this->_xpath->query('//item'.$attribute.$child);
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else
|
|
$request = $this->_xpath->query('//' . $this->_tableName . '[@name = "'.$from.'"]'.$item.$attribute.$child);
|
|
/* if($what == array('*'))
|
|
return $request;
|
|
else{
|
|
return $this->_getChildValue($what[0], $request);
|
|
}*/
|
|
return $request;
|
|
}
|
|
|
|
private function _arrayToNode($node){
|
|
if(!is_array($node) || !in_array($node['name'], array($this->_tableName, $this->_itemName)))
|
|
return;
|
|
$element = $this->_doc->createElement($node['name']);
|
|
if(isset($node['attributes'])){
|
|
foreach($node['attributes'] as $attributeName=>$attributeValue){
|
|
if($attributeName != '')
|
|
$element->setAttribute($attributeName, htmlspecialchars(stripslashes($attributeValue)));
|
|
}
|
|
}
|
|
if(isset($node['childs'])){
|
|
foreach($node['childs'] as $childName=>$childValue){
|
|
if($childName != ''){
|
|
$newElement = $this->_doc->createElement($childName, $childValue);
|
|
$element->appendChild($newElement);
|
|
}
|
|
}
|
|
}
|
|
return $element;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Allows you to insert a node into your DB thanks to an array
|
|
* @param $node array with 'name' 'attributes' and 'childs'
|
|
* @param $table string in which node you want to put it. By default, the root of the xml file
|
|
* @param $position string 'before' or 'after'
|
|
* @return bool
|
|
*/
|
|
private function _insertItem($id = null, $attributes = null, $childs = null, $table, $position = null){
|
|
if($id == null && $this->isTableAI($table)){
|
|
$id = $this->_getNewIncrement($table);
|
|
}
|
|
else if(($id == null && !$this->isTableAI($table)) || ($id != null && $this->isTableAI($table)))
|
|
return false;
|
|
|
|
if($attributes == null)
|
|
$attributes = array($this->_primaryKey=>$id);
|
|
else
|
|
$attributes += array($this->_primaryKey=>$id);
|
|
if($this->tableAlreadyExists($table) && !$this->pkAlreadyExists($id, $table))
|
|
return $this->_insert(array('name'=>$this->_itemName, 'attributes'=>$attributes, 'childs'=>$childs), $table, $position);
|
|
return false;
|
|
}
|
|
|
|
// TODO $position
|
|
private function _insert(array $node, $table = null, $position = null){
|
|
if(isset($node[0]))
|
|
$node = $node[0];
|
|
if(!is_array($node) || !isset($node['name']) || !isset($node['attributes'])){
|
|
throw new Exception('The node is not well formated.');
|
|
}
|
|
// Creating the node from an array
|
|
$element = $this->_arrayToNode($node);
|
|
|
|
// Inserting the node into the DB
|
|
// case : creation of a new table
|
|
if($table == null && !$this->tableAlreadyExists($node['name'])){
|
|
$this->_doc->firstChild->appendChild($element);
|
|
}else if($table != null){
|
|
// case : insertion into the end of table
|
|
if(!$this->tableAlreadyExists($table) || $this->pkAlreadyExists($node['attributes'][$this->_primaryKey], $table)){
|
|
return false;
|
|
}
|
|
$tempTable = $this->_xpath->query('//' . $this->_tableName . '[@name = "'.$table.'"]/item');
|
|
// $totalItemInTable = $this->selectAllFromTable($table, 'count');
|
|
$totalItemInTable = $tempTable->length;
|
|
if($position == null || $position < $totalItemInTable){
|
|
$request = $this->_xpath->query('//' . $this->_tableName . '[@name = "'.$table.'"]');
|
|
$request->item(0)->appendChild($element);
|
|
}else{
|
|
$itemsAfter = $this->selectAllFromTable($table, 'node');
|
|
$itemAfter = $itemsAfter->item($position-1);
|
|
$itemAfter->parentNode->insertBefore($element, $itemAfter);
|
|
}
|
|
}else{
|
|
return false;
|
|
}
|
|
return $this->commit();
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @param $table string
|
|
* @param $oldAttribute string name of the attribute you want to change
|
|
* @param $newAttribute array name/value of the attribute you want to add
|
|
* @param $forceInsert bool
|
|
* @return bool
|
|
*/
|
|
public function updateItemAttribute($table, $oldAttribute, $newAttribute, $forceInsert = false){
|
|
$request = $this->select($table, null, array($oldAttribute[0]=>$oldAttribute[1]), null, 'node', '/'.$this->_itemName);
|
|
if($request->length == 1){
|
|
if(!$forceInsert){
|
|
$request->item(0)->setAttribute($oldAttribute[0],$newAttribute[1]);
|
|
}else{
|
|
$request->item(0)->setAttribute($newAttribute[0],$newAttribute[1]);
|
|
}
|
|
return $this->commit();
|
|
}
|
|
else
|
|
return false;
|
|
}
|
|
|
|
private function _updateItemID($table, $node, $newAttribute, $forceInsert = false){
|
|
if($this->pkAlreadyExists($node[0]["attributes"][$this->_primaryKey], $table) && $newAttribute != $node[0]["attributes"][$this->_primaryKey]){
|
|
$request = $this->_select(array('*'), $table, $node[0]["attributes"][$this->_primaryKey], null, $item = '/'.$this->_itemName);
|
|
$request->item(0)->setAttribute($this->_primaryKey,$newAttribute);
|
|
return true;
|
|
}
|
|
else return false;
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @param $table string
|
|
* @param $value string new value of the node
|
|
* @return bool
|
|
*/
|
|
public function updateItemValue($table, $attribute = null, $child = null, $value){
|
|
$request = $this->select($table, null, array($attribute[0]=>$attribute[1]), $child, 'node', '/'.$this->_itemName);
|
|
//$request = $this->_xpath->query('//'.$node.'[@' . $attribute[0] . ' = "' . $attribute[1] . '"]');
|
|
if($request->length == 1){
|
|
$request = $request->item(0);
|
|
$newText = new DOMText($value);
|
|
$request->removeChild($request->firstChild);
|
|
$request->appendChild($newText);
|
|
return $this->commit();
|
|
}
|
|
else
|
|
return false;
|
|
}
|
|
|
|
public function updateChildValue($table, $node, $child, $value){
|
|
if($node->length == 1){
|
|
$node = $node->item(0);
|
|
$newChild = $this->_doc->createElement($child, $value);
|
|
$old_element_childNodes = $node->childNodes;
|
|
$length = $old_element_childNodes->length;
|
|
$index = 0;
|
|
for($i = 0; $i < $length; $i++)
|
|
{
|
|
if($old_element_childNodes->item($i)->nodeName == $child){
|
|
$index = $i;
|
|
break;
|
|
}
|
|
}
|
|
//$request = $node->getElementsByTagName($child)->item(0);
|
|
if($node->replaceChild($newChild, $old_element_childNodes->item($index)))
|
|
return $this->commit();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
private function _updateChildValue($table, $node, $child, $value){
|
|
if($node->length == 1){
|
|
$node = $node->item(0);
|
|
$value = htmlspecialchars(stripslashes($value));
|
|
$newChild = $this->_doc->createElement($child, $value);
|
|
$old_element_childNodes = $node->childNodes;
|
|
$length = $old_element_childNodes->length;
|
|
$index = 0;
|
|
for($i = 0; $i < $length; $i++)
|
|
{
|
|
if($old_element_childNodes->item($i)->nodeName == $child){
|
|
$index = $i;
|
|
break;
|
|
}
|
|
}
|
|
//$request = $node->getElementsByTagName($child)->item(0);
|
|
if($node->replaceChild($newChild, $old_element_childNodes->item($index)))
|
|
return $this->commit();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Delete an entry
|
|
* @param $table name of the table in which the entry is
|
|
* @param $id $attributes array where condition(s)
|
|
* @return bool
|
|
*/
|
|
private function _delete($table, $id = null){
|
|
if($id != null)
|
|
$request = $this->_select (array('*'), $table, $id, null, '/'.$this->_itemName);
|
|
//$request = $this->selectFromPK($table, $id, 'node')->item(0);
|
|
else
|
|
$request = $this->_select (array('*'), $table);
|
|
if($request == null)
|
|
return false;
|
|
else
|
|
$request = $request->item(0);
|
|
try{
|
|
$request->parentNode->removeChild($request);
|
|
}catch(Exception $e){
|
|
echo $e->getMessage();
|
|
return false;
|
|
}
|
|
return $this->commit();
|
|
}
|
|
|
|
public function move($node, $to, $position = null){
|
|
$this->_buffer = $node;
|
|
if($this->deleteNode($node)){
|
|
$nodeArray = $this->requestToArray($this->_buffer);
|
|
return $this->_insert($nodeArray, $to, $position);
|
|
}else
|
|
return false;
|
|
}
|
|
} |