XmlWebService.inc.php

<?php
 
import('lib.pkp.classes.webservice.WebService');
import('lib.pkp.classes.xslt.XSLTransformer');
 
class XmlWebService extends WebService {
   var $_returnType;
 
   function __construct() {
      // Parent constructor intentionally not called
      if (extension_loaded('dom')) {
         $this->_returnType = XSL_TRANSFORMER_DOCTYPE_DOM;
      } else {
         $this->_returnType = XSL_TRANSFORMER_DOCTYPE_STRING;
      }
   }
 
   function getReturnType() {
      return $this->_returnType;
   }
 
   function setReturnType($returnType) {
      if ($returnType == XSL_TRANSFORMER_DOCTYPE_DOM) {
         if (!extension_loaded('dom')) {
            fatalError('This system does not meet minimum requirements!');
         }
      }
 
      $this->_returnType = $returnType;
   }
 
 
   function &call(&$webServiceRequest) {
      // Call the web service
      $xmlResult = parent::call($webServiceRequest);
 
      if (Config::getVar('debug', 'log_web_service_info')) {
         error_log('Time: ' . date('c') . "\nRequest: " . print_r($webServiceRequest, true) . "\nResponse: " . print_r($xmlResult, true) . "\nLast response status: " . $this->_lastResponseStatus . "\n");
      }
      // Catch web service errors
      if (is_null($xmlResult)) return $xmlResult;
 
      switch ($this->_returnType) {
         case XSL_TRANSFORMER_DOCTYPE_DOM:
            // Create DOM document
            $resultDOM = new DOMDocument('1.0', Config::getVar('i18n', 'client_charset'));
            // Try to handle non-well-formed responses
            $resultDOM->recover = true;
            $resultDOM->loadXML($xmlResult);
            return $resultDOM;
 
         case XSL_TRANSFORMER_DOCTYPE_STRING:
            return $xmlResult;
 
         default:
            assert(false);
      }
   }
}