public function SearchApiGroupingMultivalueField::preprocessIndexItems in Search API Grouping 7

Splits up the items on behalf of a multivalue field.

Overrides SearchApiAbstractProcessor::preprocessIndexItems

File

includes/processor_multivalue_field.inc, line 38

Processor for splitting indexing items on behalf of a multivalue field.

Class

SearchApiGroupingMultivalueField

Processor for splitting up items on behalf of a multivalue field.

Code

public function preprocessIndexItems(array &$items) {

  // Preprocess first.
  parent::preprocessIndexItems($items);
  $source_items = $items;
  $all_items = array();
  if (!empty($this->options['split_field'])) {
    foreach ($items as $id => $item) {

      // Find the properties of the split field.
      $field_properties = array();
      list($key, $property) = explode(':', $this->options['split_field']);
      foreach ($item as $related_name => $related_field) {
        if (substr($related_name, 0, mb_strlen($key) + 1) == $key . ':') {
          $field_properties[] = $related_name;
        }
      }

      // Split field and properties found.
      if (!empty($field_properties)) {
        foreach ($item[$this->options['split_field']]['value'] as $delta => $value) {
          $split_item = $item;
          foreach ($field_properties as $field_property) {
            if (search_api_is_list_type($item[$field_property]['type'])) {
              $split_item[$field_property]['value'] = array(
                $item[$field_property]['value'][$delta],
              );
            }
            else {

              // Very unlikely case but it's better to cover it.
              $split_item[$field_property]['value'] = $item[$field_property]['value'];
            }
          }
          $all_items[$id . ':delta' . $delta] = $split_item;
        }
      }
      else {
        $all_items[$id] = $item;
      }
    }
  }
  $items = $all_items;
}