<?php

class ApplicationRDFWriter
{
    protected $model;
    protected $fileName = 'data/applications/applications.rdf';

    public function __construct($applicationID)
    {
        // Create empty MemModel
        $factory = new ModelFactory();
        $this->model = $factory->getDefaultModel();

        $this->applicationID = $applicationID;		
        
        if (!is_dir('data/applications/'))
            mkdir('data/applications/');	
        
        if(file_exists($this->fileName))
            $this->model->load($this->fileName);
    }	

    public function saveApplications()
    {	
        $this->model->saveAs($this->fileName,'rdf'); 
    }

    public function setApplicationInfo($aTitle, $aDescription, $aStyle)
    {              
        $resourceApplication = new Resource(APPLICATION.'/'.$this->applicationID);
        //remove the old values...
        $this->model->subtract($this->model->find($resourceApplication, null, null));        
       
        //...and add the new ones!
        $resourceApplicationType = new Resource(APPLICATION);
        $predicateRType = new Resource(RTYPE);
        $this->model->add(new Statement($resourceApplication,$predicateRType,$resourceApplicationType));
        $literalApplicationID = new Literal($this->applicationID);
        $predicateUniqueID = new Resource(UID);
        $this->model->add(new Statement($resourceApplication,$predicateUniqueID,$literalApplicationID));

        $applicationTitle = new Literal($aTitle);
        $predicateTitle = new Resource(TITLE);	
        $this->model->add(new Statement($resourceApplication,$predicateTitle,$applicationTitle));

        $applicationDescription = new Literal($aDescription);
        $predicateDescription = new Resource(DESCRIPTION);
        $this->model->add(new Statement($resourceApplication,$predicateDescription,$applicationDescription));

        $applicationStyle = new Literal($aStyle);
        $predicateStyle = new Resource(STYLE);
        $this->model->add(new Statement($resourceApplication,$predicateStyle,$applicationStyle));
    }
}

?>