public function FeedsXPathParserDOMXPath::namespacedQuery in Feeds XPath Parser 6

Same name and namespace in other branches

1. 7 FeedsXPathParserDOMXPath.inc \FeedsXPathParserDOMXPath::namespacedQuery()

Executes an XPath query with namespace support.

Parameters

string $query: An XPath query.

DOMNode $context: The current context of the XPath query.

string $source: The source key for this query.

Return value

array An array containing the results of the query.

File

./FeedsXPathParserDOMXPath.inc, line 78

Provides a custom version of DOMXPath for use with feeds_xpathparser.

Class

FeedsXPathParserDOMXPath

Wraps DOMXPath providing enhanced debugging and special namespace handling.

Code

public function namespacedQuery($query, $context, $source) {
  $this
    ->addDefaultNamespace($query);
  $results = $this
    ->executeQuery($query, $context);
  if (in_array($source, $this->config['debug'])) {
    $this
      ->debug($results, $source);
  }
  if (is_object($this->error) && $this->config['errors']) {
    if ($this->error->level == LIBXML_ERR_ERROR) {
      drupal_set_message(t('There was an error during the XPath query: %query.<br />Libxml returned the message: %message, with the error code: %code.', array(
        '%query' => $query,
        '%message' => trim($this->error->message),
        '%code' => $this->error->code,
      )), 'error', FALSE);
    }
    elseif ($this->error->level == LIBXML_ERR_WARNING) {
      drupal_set_message(t('There was an error during the XPath query: %query.<br />Libxml returned the message: %message, with the error code: %code.', array(
        '%query' => $query,
        '%message' => trim($this->error->message),
        '%code' => $this->error->code,
      )), 'warning', FALSE);
    }
  }

  // DOMXPath::evaluate() and DOMXPath::query() will return FALSE on error or
  // if the value is false. We check error result and return NULL in case
  // of error.
  if (is_object($this->error) && $this->error->level == LIBXML_ERR_ERROR) {
    return NULL;
  }
  return $results;
}