PKPOAIMetadataFormat_DC.inc.php

<?php
 
class PKPOAIMetadataFormat_DC extends OAIMetadataFormat {
   function toXml($dataObject, $format = null) {
      import('plugins.metadata.dc11.schema.Dc11Schema');
      $dcDescription = $dataObject->extractMetadata(new Dc11Schema());
 
      $response = "<oai_dc:dc\n" .
         "\txmlns:oai_dc=\"http://www.openarchives.org/OAI/2.0/oai_dc/\"\n" .
         "\txmlns:dc=\"http://purl.org/dc/elements/1.1/\"\n" .
         "\txmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n" .
         "\txsi:schemaLocation=\"http://www.openarchives.org/OAI/2.0/oai_dc/\n" .
         "\thttp://www.openarchives.org/OAI/2.0/oai_dc.xsd\">\n";
 
      foreach($dcDescription->getProperties() as $propertyName => $property) { /* @var $property MetadataProperty */
         if ($dcDescription->hasStatement($propertyName)) {
            if ($property->getTranslated()) {
               $values = $dcDescription->getStatementTranslations($propertyName);
            } else {
               $values = $dcDescription->getStatement($propertyName);
            }
            $response .= $this->formatElement($propertyName, $values, $property->getTranslated());
         }
      }
 
      $response .= "</oai_dc:dc>\n";
 
      return $response;
   }
 
   function formatElement($propertyName, $values, $multilingual = false) {
      if (!is_array($values)) $values = array($values);
 
      // Translate the property name to XML syntax.
      $openingElement = str_replace(array('[@', ']'), array(' ',''), $propertyName);
      $closingElement = PKPString::regexp_replace('/\[@.*/', '', $propertyName);
 
      // Create the actual XML entry.
      $response = '';
      foreach ($values as $key => $value) {
         if ($multilingual) {
            $key = str_replace('_', '-', $key);
            assert(is_array($value));
            foreach ($value as $subValue) {
               if ($key == METADATA_DESCRIPTION_UNKNOWN_LOCALE) {
                  $response .= "\t<$openingElement>" . OAIUtils::prepOutput($subValue) . "</$closingElement>\n";
               } else {
                  $response .= "\t<$openingElement xml:lang=\"$key\">" . OAIUtils::prepOutput($subValue) . "</$closingElement>\n";
               }
            }
         } else {
            assert(is_scalar($value));
            $response .= "\t<$openingElement>" . OAIUtils::prepOutput($value) . "</$closingElement>\n";
         }
      }
      return $response;
   }
}