522 lines
15 KiB
PHP
522 lines
15 KiB
PHP
<?
|
|
class XMLDB{
|
|
|
|
// Path and name to the file
|
|
protected $_file;
|
|
|
|
// Primary key
|
|
protected $_primaryKey;
|
|
|
|
// Selected table
|
|
protected $_table;
|
|
|
|
// XPATH of the doc
|
|
protected $_xpath;
|
|
|
|
// Content of the XML DB File
|
|
protected $_doc;
|
|
|
|
// Name of the main root
|
|
protected $_databaseName;
|
|
|
|
// Name of each table root
|
|
protected $_tableName;
|
|
|
|
// Name of each item inside tables
|
|
protected $_itemName;
|
|
|
|
// Encoding used for the XML
|
|
protected $_encoding;
|
|
|
|
// Node buffered
|
|
protected $_buffer;
|
|
|
|
/**
|
|
* Constructor
|
|
* @param $file string path to the file to read/create
|
|
* @param $pk string name of the primary key
|
|
* @param $createIfNotExist bool create the file if it doesn't exist
|
|
*/
|
|
public function __construct($file, $pk = "id", $createIfNotExist = false, $databaseName = "Database", $tableName = "table", $itemName = "item", $encoding = "utf-8"){
|
|
/*ini_set("display_errors", "off");
|
|
ini_set("log_errors", "on");
|
|
ini_set('error_log', $_SERVER['DOCUMENT_ROOT'].'/test/XMLDB/XMLDB.log');*/
|
|
$this->_buffer = null;
|
|
$this->_databaseName = $databaseName;
|
|
$this->_itemName = $itemName;
|
|
$this->_tableName = $tableName;
|
|
$this->_encoding = $encoding;
|
|
$this->_primaryKey = $pk;
|
|
$this->_file = $file;
|
|
$this->_doc = new DOMDocument;
|
|
$this->_doc->preserveWhiteSpace = false;
|
|
$this->_doc->formatOutput = true;
|
|
if($this->_doc->load($this->_file)){
|
|
$this->_xpath = new DOMXpath($this->_doc);
|
|
}
|
|
else{
|
|
if($createIfNotExist){
|
|
$this->createDatabase($file);
|
|
}else{
|
|
$this->_file = null;
|
|
$this->_doc = null;
|
|
$this->xpath = null;
|
|
}
|
|
}
|
|
}
|
|
|
|
public function createDatabase($file){
|
|
$this->_file = $file;
|
|
$this->_doc = DOMDocument::loadXML('<?xml version="1.0" encoding="' . $this->_encoding . '"?>
|
|
<' . $this->_databaseName . '>
|
|
</' . $this->_databaseName . '>');
|
|
$this->_xpath = new DOMXpath($this->_doc);
|
|
return $this->save();
|
|
}
|
|
|
|
public function dropDatabase($definitely = false){
|
|
if($definitely){
|
|
unlink($this->_file);
|
|
}else{
|
|
$this->createDatabase($this->_file);
|
|
}
|
|
}
|
|
|
|
public function createTable($name, $autoincrement = false, $aiDefaultValue = 0){
|
|
if($name == '*' || $this->tableAlreadyExists($name))
|
|
return false;
|
|
else{
|
|
if($autoincrement)
|
|
return $this->insert(array('name'=>$this->_tableName, 'attributes'=>array('name'=>$name, 'autoincrement'=>'true', 'aivalue'=>$aiDefaultValue)));
|
|
else
|
|
return $this->insert(array('name'=>$this->_tableName, 'attributes'=>array('name'=>$name)));
|
|
}
|
|
}
|
|
|
|
public function dropTable($table){
|
|
return $this->delete($table);
|
|
}
|
|
|
|
/**
|
|
* @return bool
|
|
*/
|
|
public function tableAlreadyExists($tableName){
|
|
if($this->selectTable($tableName, 'count') >= 1)
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
public function isTableAI($table){
|
|
if($this->tableAlreadyExists($table)){
|
|
$table = $this->selectTable($table);
|
|
$ai = $this->getAttribute('autoincrement', $table);
|
|
if($ai == 'true')
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
private function updateTableAIValue($table){
|
|
if($this->tableAlreadyExists($table)){
|
|
$table = $this->selectTable($table);
|
|
$newValue = $table->item(0)->getAttribute('aivalue')+1;
|
|
$table->item(0)->setAttribute('aivalue', $newValue);
|
|
return $newValue;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function pkAlreadyExists($pk, $table = '*'){
|
|
if($this->selectFromPK($table, $pk , 'count') > 0){
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function isLoaded(){
|
|
if($this->_doc != null)
|
|
return true;
|
|
else
|
|
return false;
|
|
}
|
|
|
|
public function count($from, $id = null, $attributes = null, $childs = null){
|
|
return $this->select($from, $id, $attributes, $childs, 'count');
|
|
}
|
|
|
|
public function setPrimaryKey($pk){
|
|
$this->_primaryKey = $pk;
|
|
}
|
|
|
|
public function getPrimaryKey(){
|
|
return $this->_primaryKey;
|
|
}
|
|
|
|
public function getXPath(){
|
|
return $this->_xpath;
|
|
}
|
|
|
|
public function setBuffer($node){
|
|
$this->_buffer = $node;
|
|
}
|
|
|
|
public function getBuffer($buffer){
|
|
return $this->_buffer;
|
|
}
|
|
|
|
private function getNewIncrement($table){
|
|
/* the old way
|
|
$field_count = $this->selectAllFromTable($table, 'count');
|
|
$nb = 1;
|
|
$tableArray = $this->selectAllFromTable($table, 'array');
|
|
//$test = $xmla->note;
|
|
for($i=0;$i<$field_count;$i++){
|
|
if($nb <= (int)$tableArray[$i]['attributes'][$this->_primaryKey]) $nb = (int)$tableArray[$i]['attributes'][$this->_primaryKey]+1;
|
|
}
|
|
return $nb;
|
|
*/
|
|
return $this->updateTableAIValue($table);
|
|
}
|
|
|
|
/**
|
|
* Saving the DB file
|
|
*/
|
|
public function save(){
|
|
if($this->_doc != null && $this->_file != null){
|
|
$this->_doc->preserveWhiteSpace = false;
|
|
$this->_doc->formatOutput = true;
|
|
$this->_doc->save($this->_file);
|
|
return true;
|
|
}else{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
|
|
private function getResult($request, $format){
|
|
switch($format){
|
|
case "node":
|
|
return $request;
|
|
break;
|
|
case "count":
|
|
return $request->length;
|
|
break;
|
|
case "array":
|
|
default:
|
|
return $this->requestToArray($request);
|
|
}
|
|
}
|
|
|
|
// TODO checking $request
|
|
private function requestToArray($request){
|
|
$return = array();
|
|
$number = 0;
|
|
|
|
foreach($request as $element){
|
|
/*if($childName != null && $childValue != null)
|
|
$element = $element->parentNode;*/
|
|
$elementValue = $element->attributes->item(0)->value;
|
|
$return[$number]['name'] = $this->_itemName;
|
|
$return[$number]['attributes'] = array($this->_primaryKey => $elementValue);
|
|
$return[$number]['childs'] = array();
|
|
|
|
//Retrieving Attributes
|
|
$attributes = $element->attributes;
|
|
$length = $attributes->length;
|
|
for ($i = 0; $i <= $length; $i++) {
|
|
if($attributes->item($i)->name != '')
|
|
$return[$number]['attributes'][$attributes->item($i)->name] = $attributes->item($i)->value;
|
|
}
|
|
|
|
// Retrivieving childs
|
|
$nodes = $element->childNodes;
|
|
$length = $nodes->length;
|
|
for ($i = 0; $i <= $length; $i++) {
|
|
if($nodes->item($i)->nodeName != '')
|
|
$return[$number]['childs'][$nodes->item($i)->nodeName] = $nodes->item($i)->nodeValue;
|
|
}
|
|
$number++;
|
|
}
|
|
return $return;
|
|
}
|
|
|
|
private function arrayToNode($node){
|
|
/*if(isset($node[0]))
|
|
$node = $node[0];*/
|
|
if(!is_array($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, $attributeValue);
|
|
}
|
|
}
|
|
if(isset($node['childs'])){
|
|
foreach($node['childs'] as $childName=>$childValue){
|
|
if($childName != ''){
|
|
$newElement = $this->_doc->createElement($childName, $childValue);
|
|
$element->appendChild($newElement);
|
|
}
|
|
}
|
|
}
|
|
return $element;
|
|
}
|
|
|
|
public function getAttribute($attribute, $node){
|
|
if($node->length == 1){
|
|
return $node->item(0)->getAttribute($attribute);
|
|
}else{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
public function getChildValue($child, $node){
|
|
if($node->length == 1){
|
|
$nodeArray = $this->requestToArray($node);
|
|
if(isset($nodeArray[0]['childs'][$child]))
|
|
return $nodeArray[0]['childs'][$child];
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Shortcuts for select
|
|
*/
|
|
public function selectTable($name, $format = 'node'){
|
|
return $this->select($name, null, null, null, $format);
|
|
}
|
|
public function selectAllFromTable($name, $format = 'node'){
|
|
return $this->select($name, null, null, null, $format, '/'.$this->_itemName);
|
|
}
|
|
public function selectFromAttribute($table, $attributes, $format = 'array'){
|
|
return $this->select($table, null, $attributes, null, $format,'/'.$this->_itemName);
|
|
}
|
|
public function selectFromChildren($table, $childs, $format = 'array'){
|
|
return $this->select($table, null, null, $childs, $format, '/'.$this->_itemName);
|
|
}
|
|
public function selectFromPK($table, $pk, $format = "array"){
|
|
return $this->select($table, $pk, null, null, $format, '/'.$this->_itemName);
|
|
}
|
|
|
|
/**
|
|
* Allows you to get an array of the node you're looking for based on a "where" search thanks to child or attribute value
|
|
* @param $from string Name of the table
|
|
* @param $id string value of the primary key
|
|
* @param $childs array name/value of the child node
|
|
* @param $attributes array name/value of the attribute
|
|
* @return array
|
|
*/
|
|
private function select($from, $id = null, $attributes = null, $childs = null, $format = 'array', $item = ''){
|
|
if($id != null && !is_array($id)){
|
|
$attribute = '[@' . $this->_primaryKey . ' = "' . $id . '"]';
|
|
}
|
|
if($attributes != null && is_array($attributes)){
|
|
foreach($attributes as $attributeName=>$attributeValue)
|
|
$attribute .= '[@' . $attributeName . ' = "' . $attributeValue . '"]';
|
|
}
|
|
if($childs != null && is_array($childs)){
|
|
foreach($childs as $childName=>$childValue)
|
|
$child .= '[' . $childName . '="' . $childValue . '"]';
|
|
}
|
|
if($from == '*')
|
|
$request = $this->_xpath->query('//item'.$attribute.$child);
|
|
else
|
|
$request = $this->_xpath->query('//' . $this->_tableName . '[@name = "'.$from.'"]'.$item.$attribute.$child);
|
|
|
|
return $this->getResult($request, $format);
|
|
}
|
|
|
|
/**
|
|
* Same as above, but user can build his own xpath
|
|
*/
|
|
public function select_xpath($from, $xpath, $format = 'array'){
|
|
if (!$from || !$xpath) {
|
|
throw new Exception('uhoh, no table selected');
|
|
}
|
|
$request = $this->_xpath->query('//' . $this->_tableName . '[@name = "'.$from.'"]/'.$xpath);
|
|
switch($format){
|
|
case "node":
|
|
$return = $request;
|
|
break;
|
|
case "count":
|
|
$return = $request->length;
|
|
break;
|
|
case "array":
|
|
default:
|
|
$return = $this->requestToArray($request);
|
|
}
|
|
|
|
return $return;
|
|
}
|
|
|
|
/**
|
|
* 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 $position string 'before' or 'after'
|
|
* @return bool
|
|
*/
|
|
public function insertItem($id = null, $attributes = null, $childs = null, $table){
|
|
if($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);
|
|
return false;
|
|
}
|
|
|
|
// TODO $position
|
|
private function insert($node, $table = null, $position = null){
|
|
if(isset($node[0]))
|
|
$node = $node[0];
|
|
if(!is_array($node) || !isset($node['name']) || !isset($node['attributes'])){
|
|
return false;
|
|
}
|
|
// 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;
|
|
}
|
|
$totalItemInTable = $this->selectAllFromTable($table, 'count');
|
|
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->save();
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @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->save();
|
|
}
|
|
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 $this->save();
|
|
}
|
|
else
|
|
return false;
|
|
}
|
|
|
|
public function updateChildValue($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 $this->save();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function deleteItem($table, $id = null, $attributes = null){
|
|
if($id == null && $attributes == null)
|
|
return false;
|
|
if($id != null)
|
|
return $this->delete($table, $id);
|
|
return $this->delete($table, null, $attributes);
|
|
}
|
|
/**
|
|
* 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, $attributes = null){
|
|
if($id != null && $attributes != null)
|
|
return false;
|
|
if($id != null)
|
|
$request = $this->selectFromPK($table, $id, 'node')->item(0);
|
|
if($attributes != null)
|
|
$request = $this->selectFromAttribute($table, array($attribute[0]=>$attribute[1]), 'node')->item(0);
|
|
if($attributes == null && $id == null)
|
|
$request = $this->selectTable($table);
|
|
if($request == null)
|
|
return false;
|
|
try{
|
|
$request->parentNode->removeChild($request);
|
|
}catch(Exception $e){
|
|
echo $e->getMessage();
|
|
return false;
|
|
}
|
|
return $this->save();
|
|
}
|
|
|
|
public function deleteNode($node){
|
|
if($node == null)
|
|
return false;
|
|
$node = $node->item(0);
|
|
$node->parentNode->removeChild($node);
|
|
return $this->save();
|
|
}
|
|
|
|
public function move($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;
|
|
}
|
|
} |