ConditionAggregate.php in Drupal 8

Namespace

Drupal\Core\Entity\Query\Sql

File

core/lib/Drupal/Core/Entity/Query/Sql/ConditionAggregate.php

<?php

namespace Drupal\Core\Entity\Query\Sql;

use Drupal\Core\Database\Query\SelectInterface;
use Drupal\Core\Entity\Query\ConditionAggregateBase;
use Drupal\Core\Entity\Query\ConditionAggregateInterface;
use Drupal\Core\Database\Query\Condition as SqlCondition;
use Drupal\Core\Entity\Query\QueryBase;

/**
 * Defines the aggregate condition for sql based storage.
 */
class ConditionAggregate extends ConditionAggregateBase {

  /**
   * {@inheritdoc}
   */
  public function compile($conditionContainer) {

    // If this is not the top level condition group then the sql query is
    // added to the $conditionContainer object by this function itself. The
    // SQL query object is only necessary to pass to Query::addField() so it
    // can join tables as necessary. On the other hand, conditions need to be
    // added to the $conditionContainer object to keep grouping.
    $sql_query = $conditionContainer instanceof SelectInterface ? $conditionContainer : $conditionContainer->sqlQuery;
    $tables = new Tables($sql_query);
    foreach ($this->conditions as $condition) {
      if ($condition['field'] instanceof ConditionAggregateInterface) {
        $sql_condition = new SqlCondition($condition['field']
          ->getConjunction());

        // Add the SQL query to the object before calling this method again.
        $sql_condition->sqlQuery = $sql_query;
        $condition['field']
          ->compile($sql_condition);
        $sql_query
          ->condition($sql_condition);
      }
      else {
        $type = strtoupper($this->conjunction) == 'OR' || $condition['operator'] == 'IS NULL' ? 'LEFT' : 'INNER';
        $field = $tables
          ->addField($condition['field'], $type, $condition['langcode']);
        $condition_class = QueryBase::getClass($this->namespaces, 'Condition');
        $condition_class::translateCondition($condition, $sql_query, $tables
          ->isFieldCaseSensitive($condition['field']));
        $function = $condition['function'];
        $placeholder = ':db_placeholder_' . $conditionContainer
          ->nextPlaceholder();
        $conditionContainer
          ->having("{$function}({$field}) {$condition['operator']} {$placeholder}", [
          $placeholder => $condition['value'],
        ]);
      }
    }
  }

  /**
   * {@inheritdoc}
   */
  public function exists($field, $function, $langcode = NULL) {
    return $this
      ->condition($field, $function, NULL, 'IS NOT NULL', $langcode);
  }

  /**
   * {@inheritdoc}
   */
  public function notExists($field, $function, $langcode = NULL) {
    return $this
      ->condition($field, $function, NULL, 'IS NULL', $langcode);
  }

}

Classes

Name	Description
ConditionAggregate	Defines the aggregate condition for sql based storage.