FH-Complete - RDF-Class

2026-07-19 16:02:15 +00:00 · 2011-09-11 18:16:13 +00:00
parent b2ba07488f
commit de2b5a842f
1 changed files with 133 additions and 0 deletions
@@ -0,0 +1,133 @@
+<?php
+/* Copyright (C) 2006 Technikum-Wien
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Authors: Christian Paminger <christian.paminger@technikum-wien.at>
+ */
+
+class rdf 
+{
+	// Header Variablen
+	public $content_type='Content-type: application/xhtml+xml';	// string
+	public $xml_header='<?xml version="1.0" encoding="UTF-8" standalone="yes"?>';	// string
+	public $xml_ns;				// string
+	protected $rdf_url;      			// string
+	protected static $rdf_text;
+	protected static $nl="\n";
+	protected static $tb="\t";
+
+	// Objekt Variablen
+	protected $counter=0;			// int
+	public $obj_id;				// string
+	public $obj = array();
+	public $attr = array();			// string
+
+	/**
+	 * Konstruktor - Uebergibt die Connection und laedt optional eine Reservierung
+	 * @param $reservierung_id
+	 */
+	public function __construct($xml_ns=null,$rdf_url=null)
+	{
+		$this->xml_ns = $xml_ns;
+		$this->rdf_url = $rdf_url;
+	}
+	
+	/**
+	 * Prueft die Variablen vor dem Speichern
+	 * auf Gueltigkeit.
+	 * @return true wenn ok, false im Fehlerfall
+	 */
+
+	public function newObjekt($id)
+	{
+		$this->obj[$this->counter] = new rdf();
+		$this->obj[$this->counter++]->setObjID($id);
+		return $this->counter-1;
+	}
+
+	public function setObjID($id)
+	{
+		$this->obj_id=$id;
+		return true;
+	}
+	
+	public function sendHeader($cache=false)
+	{
+
+		if ($cache)
+		{
+		}
+		else
+		{
+			header("Cache-Control: no-cache");
+			header("Cache-Control: post-check=0, pre-check=0",false);
+			header("Expires Mon, 26 Jul 1997 05:00:00 GMT");
+			header("Pragma: no-cache");
+		}
+		header($this->content_type);
+		echo '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>';
+		return true;
+	}
+
+	public function setAttribut($name,$value,$cdata=true)
+	{
+		$this->attr[$this->counter]->name=$name;
+		$this->attr[$this->counter]->value=$value;
+		$this->attr[$this->counter]->cdata=$cdata;
+		$this->counter++;
+		//var_dump($this->attr);
+		return true;
+	}
+
+	public function createRdfHeader()
+	{
+		$this->rdf_text="\n".'<RDF:RDF'."\n\t"
+			.'xmlns:RDF="http://www.w3.org/1999/02/22-rdf-syntax-ns#"'."\n\t".'xmlns:'.$this->xml_ns.'="'.$this->rdf_url.'/rdf#"'."\n".'>'."\n\t"
+			.'<RDF:Seq about="'.$this->rdf_url.'">'."\n";
+	}
+	
+	public function createRdfData()
+	{
+		foreach ($this->obj as $obj)
+		{		
+			$this->rdf_text.="\n\t".'<RDF:li>'
+				."\n\t\t".'<RDF:Description id="'.$obj->obj_id.'"  about="'.$this->rdf_url.'/'.$obj->obj_id.'" >';
+			foreach ($obj->attr as $attr)
+				$this->rdf_text.="\n\t\t\t<".$this->xml_ns.':'.$attr->name.'><![CDATA['.$attr->value.']]></'.$this->xml_ns.':'.$attr->name.'>';
+			$this->rdf_text.="\n\t\t".'</RDF:Description>'."\n\t".'</RDF:li>';
+		}
+	}
+	
+	public function createRdfFooter()
+	{
+		$this->rdf_text.='</RDF:Seq>'."\n".'</RDF:RDF>'."\n\t";
+	}
+
+	public function sendRdfText()
+	{
+		//echo $this->rdf_text;
+		if (!isset($this->rdf_text))
+		{
+			$this->createRdfHeader();
+			$this->createRdfData();
+			//$this->createRdfSequence();
+			$this->createRdfFooter();
+		}
+		echo $this->rdf_text;
+		return true;
+	}
+}
+?>