OAIMetadataFormatPlugin.inc.php

<?php
 
import('lib.pkp.classes.plugins.Plugin');
import('lib.pkp.classes.oai.OAIStruct');
 
abstract class OAIMetadataFormatPlugin extends Plugin {
 
   function register($category, $path, $mainContextId = null) {
      if (!parent::register($category, $path, $mainContextId)) return false;
      $this->addLocaleData();
      if ($this->getEnabled()) HookRegistry::register('OAI::metadataFormats', array($this, 'callback_formatRequest'));
      return true;
   }
 
   static function getMetadataPrefix() {
      assert(false); // Should always be overridden
   }
 
   static function getSchema() {
      return '';
   }
 
   static function getNamespace() {
      return '';
   }
 
   abstract function getFormatClass();
 
   function callback_formatRequest($hookName, $args) {
      $namesOnly = $args[0];
      $identifier = $args[1];
      $formats =& $args[2];
 
      if ($namesOnly) {
         $formats = array_merge($formats,array($this->getMetadataPrefix()));
      } else {
         $formatClass = $this->getFormatClass();
         $formats = array_merge(
            $formats,
            array($this->getMetadataPrefix() => new $formatClass($this->getMetadataPrefix(), $this->getSchema(), $this->getNamespace()))
         );
      }
      return false;
   }
}