/**
  * Executes the command
  * 
  * @param InputInterface $input            
  * @param OutputInterface $output            
  */
 protected function execute(InputInterface $input, OutputInterface $output)
 {
     $sourcefile = $input->getOption('source');
     try {
         $output->writeln("Validating: {$sourcefile}");
         $check = OData\Helper::validate($sourcefile, $errors);
         if ($check) {
             $output->writeln("Document is a valid ODATA source. ");
         } else {
             $output->writeln("Document '" . $sourcefile . "' isn`t valid ODATA source ");
             foreach ($errors as $error) {
                 $output->writeln(OData\Helper::LibXMLErrorToString($error));
             }
             throw new \Exception("Source is not valid.");
         }
         $output->writeln("Done.");
     } catch (\eZ\Publish\API\Repository\Exceptions\NotFoundException $e) {
         $output->writeln($e->getMessage());
     } catch (\eZ\Publish\API\Repository\Exceptions\ContentFieldValidationException $e) {
         $output->writeln($e->getMessage());
     } catch (\eZ\Publish\API\Repository\Exceptions\ContentValidationException $e) {
         $output->writeln($e->getMessage());
     }
     /*
     $source = new OData\Source( $url);
     $import = new Import\Process( $location, $contentType, $source );
     if($import->validate()){
         $import->import();
     }
     */
 }
 public function validateImport()
 {
     try {
         $check = OData\Helper::validateDom($this->feed, $errors, $this->_contenttypeidentifier);
         if ($check) {
             echo "Document is a valid ODATA source. \n";
             return true;
         } else {
             echo "Document isn`t valid ODATA source\n";
             foreach ($errors as $error) {
                 echo OData\Helper::LibXMLErrorToString($error) . "\n";
             }
             throw new \Exception("Source is not valid.");
         }
     } catch (\eZ\Publish\API\Repository\Exceptions\NotFoundException $e) {
         $output->writeln($e->getMessage());
     } catch (\eZ\Publish\API\Repository\Exceptions\ContentFieldValidationException $e) {
         $output->writeln($e->getMessage());
     } catch (\eZ\Publish\API\Repository\Exceptions\ContentValidationException $e) {
         $output->writeln($e->getMessage());
     }
 }