function facetapi_apachesolr_facetapi_facet_date_build in Facet API 6

Implementation of hook_facetapi_facet_QUERY_TYPE_build().

File

contrib/facetapi_apachesolr/facetapi_apachesolr.module, line 208

The Apache Solr Search Integration module's implementation of the the Facet API.

Code

function facetapi_apachesolr_facetapi_facet_date_build(FacetapiAdapter $adapter, array $facet) {
  $build = array();
  if (!($response = apachesolr_static_response_cache())) {
    return array();
  }

  // Gets total number of documents matched in search.
  // NOTE: We need a Solr_Base_Query::get_solr() method.
  static $total;
  if (NULL === $total) {
    if ($raw_response = json_decode($response
      ->getRawResponse())) {
      $total = $raw_response->response->numFound;
    }
    else {
      $total = 0;
    }
  }

  // Gets the active date facets, starts to builds the "parent - child"
  // relationships.
  $parent = NULL;
  foreach ($adapter
    ->getActiveItems($facet) as $value => $item) {

    // Builds the raw facet "value", the count for selected items will be the
    // total number of rows returned in the query.
    $build[$value] = array(
      '#count' => $total,
    );

    // If there is a previous item, there is a parent, uses a reference so the
    // arrays are populated when they are updated.
    if (NULL !== $parent) {
      $build[$parent]['#item_children'][$value] =& $build[$value];
      $build[$value]['#item_parents'][$parent] = $parent;
    }

    // Stores the last value iterated over.
    $parent = $value;
  }

  // Gets raw facet data from the Solr server.
  if (isset($response->facet_counts->facet_dates)) {
    $raw_data = (array) $response->facet_counts->facet_dates->{$facet['field']};
  }
  else {
    $raw_data = array();
  }
  $end = !empty($raw_data['end']) ? $raw_data['end'] : '';
  $gap = !empty($raw_data['gap']) ? $raw_data['gap'] : '';
  unset($raw_data['end']);
  unset($raw_data['gap']);

  // Treat each date facet as a range start, and use the next date facet
  // as range end.  Use 'end' for the final end.
  $range_end = array();
  $previous = NULL;
  foreach ($raw_data as $value => $count) {
    if (isset($previous)) {
      $range_end[$previous] = $value;
    }
    $previous = $value;
  }
  $range_end[$previous] = $end;

  // Builds facet counts object used by the server.
  foreach ($raw_data as $value => $count) {
    if ($count) {
      $new_value = '[' . $value . ' TO ' . $range_end[$value] . ']';
      $build[$new_value] = array(
        '#count' => $count,
        '#active' => 0,
      );
      if (NULL !== $parent) {
        $build[$parent]['#item_children'][$new_value] =& $build[$new_value];
        $build[$new_value]['#item_parents'][$parent] = $parent;
      }
    }
  }
  return $build;
}