class Condition in MongoDB 8

Hierarchy

class \Drupal\Core\Entity\Query\ConditionFundamentals
- class \Drupal\Core\Entity\Query\ConditionBase implements ConditionInterface
  - class \Drupal\mongodb\Entity\Condition

File

src/Entity/Condition.php, line 16: Contains Drupal\mongodb\Entity\ContentEntityStorage.

Namespace

View source

class Condition extends ConditionBase {

  /**
   * Queries for the existence of a field.
   *
   * @param $field
   * @param string $langcode
   * @return ConditionInterface
   * @see \Drupal\Core\Entity\Query\QueryInterface::exists()
   */
  public function exists($field, $langcode = NULL) {
    $this
      ->condition($field, TRUE, '$exists', $langcode);
    return $this;
  }

  /**
   * Queries for the existence of a field.
   *
   * @param string $field
   * @return ConditionInterface;
   * @see \Drupal\Core\Entity\Query\QueryInterface::notexists()
   */
  public function notExists($field, $langcode = NULL) {
    $this
      ->condition($field, FALSE, '$exists', $langcode);
    return $this;
  }

  /**
   * Compiles this conditional clause.
   *
   * @param $query
   *   The query object this conditional clause belongs to.
   */
  public function compile($entityType) {

    /** @var \Drupal\Core\Entity\EntityType $entityType */
    $entity_type_id = $this->query
      ->getEntityTypeId();
    $entity_manager = \Drupal::entityManager();
    $langcode_key = \Drupal::entityManager()
      ->getDefinition($entity_type_id)
      ->getKey('langcode');
    $and = strtolower($this->conjunction) == 'and';
    foreach ($this->conditions as $key => $condition) {
      if (isset($condition['langcode'])) {

        /** @var \Drupal\mongodb\Entity\Condition $group */
        $group = new static('and', $this->query);
        $group
          ->condition($condition['field'], $condition['value'], $condition['operator']);
        $group
          ->condition($langcode_key, $condition['langcode']);
        unset($this->conditions[$key]);
        $this
          ->condition($group);
      }
    }
    $field_storage_definitions = $entity_manager
      ->getFieldStorageDefinitions($entity_type_id);
    $find = array();
    $query_index = 0;
    foreach ($this->conditions as $condition) {
      $query_field = $condition['field'];
      if ($query_field instanceof ConditionInterface) {
        if ($compiled = $query_field
          ->compile($entityType)) {
          if ($and) {
            $find['$and'][++$query_index] = $compiled;
          }
          else {
            $find['$or'][] = $compiled;
          }
        }
      }
      else {
        if (!isset($condition['operator'])) {
          $condition['operator'] = is_array($condition['value']) ? '$in' : '=';
        }
        list($field, $column) = explode('.', $query_field, 2) + array(
          1 => '',
        );
        if (!isset($field_storage_definitions[$field])) {
          throw new QueryException(String::format('@column not found', array(
            '@column' => $column,
          )));
        }
        $columns = $field_storage_definitions[$field]
          ->getSchema()['columns'];
        if (!$column) {
          $column = count($columns) == 1 ? array_keys($columns)[0] : 'value';
        }
        $translated_condition = $this
          ->translateCondition($condition, $columns[$column]['type']);
        if ($and) {
          if (isset($find['$and'][$query_index]['values']['$elemMatch'][$field]['$elemMatch'][$column])) {
            $this
              ->merge($find['$and'][$query_index]['values']['$elemMatch'][$field]['$elemMatch'][$column], $translated_condition);
          }
          else {

            // The first $elemMatch is required to keep unspecified langcode
            // conditions within the same translation, the second is to keep
            // the same fields within the same delta.
            $find['$and'][$query_index]['values']['$elemMatch'][$field]['$elemMatch'][$column] = $translated_condition;
          }
        }
        else {
          $find['$or'][] = array(
            "values.{$field}.{$column}" => $translated_condition,
          );
        }
      }
    }
    if ($and) {
      if ($query_index) {
        $find['$and'] = array_values($find['$and']);
      }
      elseif ($find) {
        $find = $find['$and'][0];
      }
    }
    return $find;
  }
  protected function translateCondition(array $condition, $type) {
    $value = MongoCollectionFactory::castValue($type, $condition['value']);
    $operator = $condition['operator'];
    if ($operator[0] === '$') {
      return array(
        $operator => $value,
      );
    }
    switch ($operator) {
      case '=':
        return array(
          '$eq' => $value,
        );
      case 'IN':
        return array(
          '$in' => $value,
        );
      case 'NOT IN':
        return array(
          '$nin' => $value,
        );
      case '<':
        return array(
          '$lt' => $value,
        );
      case '>':
        return array(
          '$gt' => $value,
        );
      case '<=':
        return array(
          '$lte' => $value,
        );
      case '>=':
        return array(
          '$gte' => $value,
        );
      case '!=':
      case '<>':
        return array(
          '$ne' => $value,
        );
      case 'STARTS_WITH':
        return new \MongoRegex('/^' . preg_quote($value, '/') . '/');
      case 'CONTAINS':
        return new \MongoRegex('/' . preg_quote($value, '/') . '/i');
      case 'ENDS_WITH':
        return new \MongoRegex('/' . preg_quote($value, '/') . '/$i');
      case 'BETWEEN':
        return array(
          '$gte' => $value[0],
          '$lte' => $value[1],
        );
      default:
        throw new QueryException(String::format('@operator not implemented', array(
          '@operator' => $operator,
        )));
    }
  }
  protected function merge(&$old_array, $new_value) {

    // @TODO this doesnt work with regexps.
    list($op, $value) = each($new_value);
    if (isset($old_array[$op])) {
      $old_value = $old_array[$op];
      switch ($op) {
        case '$eq':
          if ($value !== $new_value) {

            // Impossible condition.
            $old_array = [
              '$gt' > new \MongoMaxKey(),
            ];
          }
          break;
        case '$in':
        case '$nin':
          $old_array[$op] = array_unique(array_merge($old_value, $value));
          break;
      }
    }
    else {
      $old_array[$op] = $value;
    }
  }

}

Members

Name	Modifiers	Type	Description	Overrides
Condition::compile	public	function	Compiles this conditional clause. Overrides ConditionInterface::compile
Condition::exists	public	function	Queries for the existence of a field. Overrides ConditionInterface::exists
Condition::merge	protected	function
Condition::notExists	public	function	Queries for the existence of a field. Overrides ConditionInterface::notExists
Condition::translateCondition	protected	function
ConditionBase::condition	public	function	Adds a condition. Overrides ConditionInterface::condition
ConditionFundamentals::$conditions	protected	property	Array of conditions.
ConditionFundamentals::$conjunction	protected	property	The conjunction of this condition group. The value is one of the following:
ConditionFundamentals::$namespaces	protected	property	List of potential namespaces of the classes belonging to this condition.
ConditionFundamentals::$query	protected	property	The query this condition belongs to.	1
ConditionFundamentals::conditions	public	function
ConditionFundamentals::count	public	function
ConditionFundamentals::getConjunction	public	function
ConditionFundamentals::__clone	public	function	Implements the magic __clone function.
ConditionFundamentals::__construct	public	function	Constructs a Condition object.

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class Condition in MongoDB 8

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