Changing architecture for special pages

Instead of creating a new class, users only need to create a model and
view file called special.<COMMAND>.[view|model].extension  Thus, it is
possible to create new URL such as http://<HOMEURL>/special<COMMAND>

classes/BasicSpecialFunction.php

@@ -6,7 +6,7 @@ class SpecialFunction extends AbstractSpecialFunction{
   protected function getFunction($uri){
   	global $conf;
   	$count = 1;
-  	$prefixUri = $conf['basedir'].$conf['special']['uri'];
+  	$prefixUri = $conf['basedir'].$conf['special']['uri']."/";
   	$aux = str_replace($prefixUri, '', $uri, $count);
   	$functionAndParams = explode('/', $aux);
   	return $functionAndParams[0];
@@ -26,54 +26,45 @@ class SpecialFunction extends AbstractSpecialFunction{
   }
   
   public function execute($uri, $context){
+  	global $conf;
   	$f = $this->getFunction($uri);
   	$params = array();
   	$params = $this->getParams($uri);
   	$params[] = $context;
+  	$acceptContentType = Utils::getBestContentType($_SERVER['HTTP_ACCEPT']);
+  	$extension = Utils::getExtension($acceptContentType); 
   	try{
-  	  $methods = get_class_methods($this);
-  	  if(!in_array($f, $methods)){
+  	  $viewFile = $conf['view']['directory'].$conf['special']['uri'].".".$f.$conf['view']['extension'].".".$extension;
+  	  $modelFile = $conf['model']['directory'].$conf['special']['uri'].".".$f.$conf['model']['extension'].".".$extension;
+  	  if(!is_file($modelFile) || !is_file($viewFile)){
   	  	throw new Exception('Method does not exist!');
-  	  	Utils::send500($uri);
+  	  	Utils::send404($uri);
+  	  }
+  	  $e = $context['endpoint'];
+  	  $query = file_get_contents($modelFile);
+  	  array_pop($params);
+  	  array_shift($params);
+  	  $queryHeader = "";
+  	  $prefixHeader = array();
+  	  for($i=0;$i<sizeof($params);$i++){
+  	  	$auxPrefix = Utils::getPrefix($params[$i]);
+  	  	if($auxPrefix['ns'] != NULL){
+  	  	  $prefixHeader[$auxPrefix['ns']] = $auxPrefix['prefix'];
+  	  	}
+  	  	$query = preg_replace("|%".$i."|", $params[$i], $query);
   	  }
-  	  call_user_func_array(array($this, $f), $params);
-  	}catch (Exception $e){
-  	  Utils::send404($uri);
+  	  foreach($prefixHeader as $n => $p){
+  	  	$queryHeader .= "PREFIX $p: <$n> \n";
+  	  }
+  	  $data['query'] =$queryHeader . $query;
+  	  $data['results'] = $e->query($data['query'], Utils::getResultsType($query));
+  	  Utils::processDocument($uri, $acceptContentType, $data, $viewFile);  	
+  	}catch (Exception $ex){
+  	  Utils::send500($uri);
   	}
   	
   }
   
-  private function index($curie, $context){
-  	global $conf;
-  	//Not sure if I should use files like for 
-  	//templating instances
-  	//For now it will be "built-in" in the class
-  	$uri = Utils::curie2uri($curie);
-  	if(!isset($curie) || $curie == ""){
-  	  $uri = "Class";
-  	  $query = "SELECT DISTINCT ?resource WHERE{
-  	    {
-  	      [] a ?resource
-  	    }UNION{
-  	      ?resource a rdfs:Class
-  	    }UNION{
-  	      ?resource a owl:Class
-  	    }UNION{
-  	      ?resource rdfs:subClassOf [] 
-  	    }
-  	  }";
-  	}else{
-  	  $query = file_get_contents($conf['model']['directory'].'special.index.model.html');
-  	  $query = preg_replace("|".$conf['resource']['url_delimiter']."|", "<".$uri.">", $query);
-  	}
-  	
-  	$viewFile = $conf['view']['directory'].'special.index.view.html';
-  	$contentType = $context['contentType'];
-  	$e = $context['endpoint'];
-  	$data['results'] = $e->query($query, Utils::getResultsType($query));
-  	$data['query'] = $query;
-	Utils::processDocument($uri, $contentType, $data, $viewFile);
-  }
 }
 
 ?>

classes/Utils.php

@@ -52,6 +52,17 @@ class Utils{
   	return $ns[$parts[0]].$parts[1];
   }
   
+   public static function getPrefix($curie){
+  	global $conf;
+  	$ns = $conf['ns'];
+  	$parts = explode(':', $curie);
+  	//Avoid if we have a namespace prefix called 'http'
+  	if(preg_match('|^//|', $parts[1])){
+  	  return $curie;
+  	}  	
+  	return array('ns' => $ns[$parts[0]], 'prefix' => $parts[0]);;
+  }
+  
   public static function getTemplate($uri){
   	$filename = str_replace(":", "_", $uri);
   	if(file_exists ($filename)){

common.inc.php

@@ -26,7 +26,7 @@ $conf['http_accept']['ttl']  = array('text/n3', 'application/x-turtle', 'applica
 $conf['http_accept']['nt']   = array('text/plain');
 
 
-$conf['special']['uri'] = 'special/';
+$conf['special']['uri'] = 'special';
 $conf['special']['class'] = 'classes/BasicSpecialFunction.php';
 
 //Frontpage when user goes to http://example.org/

models/special.index.model.html

 SELECT DISTINCT ?resource WHERE {
-  	?resource a %u .
+  	[] a ?resource .
 }

models/special.instances.model.html

+SELECT DISTINCT ?resource WHERE {
+  	?resource a %0 .
+}

views/special.index.view.html

@@ -12,7 +12,7 @@
 	<ul>
     {% for row in r %}
       {% if row.value.resource != null %}
-        <li><a href='{{ row.value.resource }}'>{{row.curie.resource}}</a></li>
+        <li><a href='{{base.baseUrl}}special/instances/{{ row.curie.resource }}'>{{row.curie.resource}}</a></li>
       {% endif %}
     {% endfor %}
     </ul>

views/special.instances.view.html

+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML+RDFa 1.0//EN"
+    "http://www.w3.org/MarkUp/DTD/xhtml-rdfa-1.dtd">
+    <html xmlns="http://www.w3.org/1999/xhtml" {% for i, ns in base.ns %}xmlns:{{i}}="{{ns}}" 
+    {%endfor%}version="XHTML+RDFa 1.0" xml:lang="en">
+    <head>
+    <title>Instance of {{base.this.curie}}</title>
+    <link href="{{base.baseUrl}}/lodspeakr/css/basic.css" rel="stylesheet" type="text/css" media="screen" />
+  </head>
+  <body>
+    <h1>Instances of {{base.this.curie}}</h1>
+	<ul>
+    {% for row in r %}
+      {% if row.value.resource != null %}
+        <li><a href='{{ row.value.resource }}'>{{row.curie.resource}}</a></li>
+      {% endif %}
+    {% endfor %}
+    </ul>
+  </body>
+</html>
+