protected function SearchApiDbService::splitKeys in Search API Database Search 7

Splits a keyword expression into separate words.

Used as a helper method in prepareKeys().

Parameters

array|string|null $keys: The keys to split.

bool $tokenizer_active: (optional) TRUE if we can rely on the "Tokenizer" processor already having preprocessed the keywords.

Return value

array|string|null The keys split into separate words.

2 calls to SearchApiDbService::splitKeys()

SearchApiDbService::getAutocompleteSuggestions in ./service.inc

Implements SearchApiAutocompleteInterface::getAutocompleteSuggestions().

SearchApiDbService::prepareKeys in ./service.inc

Removes nested expressions and phrase groupings from the search keys.

File

./service.inc, line 1407

Contains SearchApiDbService.

Class

SearchApiDbService

Indexes and searches items using the database.

Code

protected function splitKeys($keys, $tokenizer_active = FALSE) {
  if (is_scalar($keys)) {
    $proc = drupal_strtolower(trim($keys));
    if (is_numeric($proc)) {
      return ltrim($proc, '-0');
    }
    elseif (drupal_strlen($proc) < $this->options['min_chars']) {
      $this->ignored[$keys] = 1;
      return NULL;
    }
    if ($tokenizer_active) {
      $words = array_filter(explode(' ', $proc), 'strlen');
    }
    else {
      $words = preg_split('/[^\\p{L}\\p{N}]+/u', $proc, -1, PREG_SPLIT_NO_EMPTY);
    }
    if (count($words) > 1) {
      $proc = $this
        ->splitKeys($words, $tokenizer_active);
      if ($proc) {
        $proc['#conjunction'] = 'AND';
      }
      else {
        $proc = NULL;
      }
    }
    return $proc;
  }
  foreach ($keys as $i => $key) {
    if (element_child($i)) {
      $keys[$i] = $this
        ->splitKeys($key, $tokenizer_active);
    }
  }
  return array_filter($keys);
}