function apachesolr_search_add_boost_params in Apache Solr Search 5.2

Same name and namespace in other branches

1. 8 apachesolr_search.module \apachesolr_search_add_boost_params()
2. 6.3 apachesolr_search.module \apachesolr_search_add_boost_params()
3. 6 apachesolr_search.module \apachesolr_search_add_boost_params()
4. 6.2 apachesolr_search.module \apachesolr_search_add_boost_params()
5. 7 apachesolr_search.module \apachesolr_search_add_boost_params()

1 call to apachesolr_search_add_boost_params()

apachesolr_search_execute in ./apachesolr_search.module

Execute a search results based on keyword, filter, and sort strings.

File

./apachesolr_search.module, line 277

Provides a content search implementation for node content for use with the Apache Solr search application.

Code

function apachesolr_search_add_boost_params(&$params, $query, $solr) {

  // Note - we have query fields set in solrconfig.xml, which will operate when
  // none are set.
  $qf = variable_get('apachesolr_search_query_fields', array());
  $fields = $solr
    ->getFields();
  if ($qf && $fields) {
    foreach ($fields as $field_name => $field) {
      if (!empty($qf[$field_name])) {
        if ($field_name == 'body') {

          // Body is the only normed field.
          $qf[$field_name] *= 40.0;
        }
        $params['qf'][] = $field_name . '^' . $qf[$field_name];
      }
    }
  }
  $data = $solr
    ->getLuke();
  if (isset($data->index->numDocs)) {
    $total = $data->index->numDocs;
  }
  else {
    $total = db_result(db_query("SELECT COUNT(nid) FROM {node}"));
  }

  // For the boost functions for the created timestamp, etc we use the
  // standard date-biasing function, as suggested (but steeper) at
  // http://wiki.apache.org/solr/DisMaxRequestHandler
  // rord() returns 1 for the newset doc, and the number in the index for
  // the oldest doc.  The function is thus: $total/(rord()*$steepness + $total).
  $date_settings = variable_get('apachesolr_search_date_boost', '4:200.0');
  list($date_steepness, $date_boost) = explode(':', $date_settings);
  if ($date_boost) {
    $params['bf'][] = "recip(rord(created),{$date_steepness},{$total},{$total})^{$date_boost}";
  }

  // Boost on comment count.
  $comment_settings = variable_get('apachesolr_search_comment_boost', '0:0');
  list($comment_steepness, $comment_boost) = explode(':', $comment_settings);
  if ($comment_boost) {
    $params['bf'][] = "recip(rord(comment_count),{$comment_steepness},{$total},{$total})^{$comment_boost}";
  }

  // Boost for a more recent comment or node edit.
  $changed_settings = variable_get('apachesolr_search_changed_boost', '0:0');
  list($changed_steepness, $changed_boost) = explode(':', $changed_settings);
  if ($changed_boost) {
    $params['bf'][] = "recip(rord(last_comment_or_change),{$changed_steepness},{$total},{$total})^{$changed_boost}";
  }

  // Boost for nodes with sticky bit set.
  $sticky_boost = variable_get('apachesolr_search_sticky_boost', 0);
  if ($sticky_boost) {
    $params['bq'][] = "sticky:true^{$sticky_boost}";
  }

  // Boost for nodes with promoted bit set.
  $promote_boost = variable_get('apachesolr_search_promote_boost', 0);
  if ($promote_boost) {
    $params['bq'][] = "promote:true^{$promote_boost}";
  }

  // Modify the weight of results according to the node types.
  $type_boosts = variable_get('apachesolr_search_type_boosts', array());
  if (!empty($type_boosts)) {
    foreach ($type_boosts as $type => $boost) {

      // Only add a param if the boost is != 0 (i.e. > "Normal").
      if ($boost) {
        $params['bq'][] = "type:{$type}^{$boost}";
      }
    }
  }
}