MetadataRecord.inc.php

<?php
 
class MetadataRecord {
   var $_descriptions = array();
 
   //
   // Get/set methods
   //
   function addDescription($metadataDescription, $replace = true) {
      assert(is_a($metadataDescription, 'MetadataDescription'));
 
      // Check that the description complies with the meta-data schema
      $descriptionMetadataSchema = $metadataDescription->getMetadataSchema();
      $recordMetadataSchema = $this->getMetadataSchema();
      if ($descriptionMetadataSchema->getName() != $recordMetadataSchema->getName()) return false;
 
      // Check whether we already have a description for the same
      // application entity instance.
      $applicationEntityId = $this->getApplicationEntityIdFromMetadataDescription($metadataDescription);
      if (isset($this->_descriptions[$applicationEntityId]) && !$replace) return false;
 
      // Add the description
      $this->_descriptions[$applicationEntityId] =& $metadataDescription;
   }
 
   function removeDescription($applicationEntityId) {
      // Remove the description if it exists
      if (isset($applicationEntityId) && isset($this->_descriptions[$applicationEntityId])) {
         unset($this->_descriptions[$applicationEntityId]);
         return true;
      }
 
      return false;
   }
 
   function &getDescriptions() {
      return $this->_descriptions;
   }
 
   function &getDescription($applicationEntityId) {
      assert(isset($applicationEntityId));
 
      // Retrieve the description
      if (isset($this->_descriptions[$applicationEntityId])) {
         return $this->_descriptions[$applicationEntityId];
      } else {
         $nullValue = null;
         return $nullValue;
      }
   }
 
   function setDescriptions(&$descriptions) {
      // Delete existing statements
      $this->_descriptions = array();
 
      // Add descriptions one by one to validate them.
      foreach($descriptions as $description) {
         if (!($this->addDescription($description, false))) {
            $this->_descriptions = array();
         }
      }
      return true;
   }
}