class Condition in Drupal 9

Implements entity query conditions for SQL databases.

Hierarchy

• class \Drupal\Core\Entity\Query\ConditionFundamentals
  • class \Drupal\Core\Entity\Query\ConditionBase implements ConditionInterface
    • class \Drupal\Core\Entity\Query\Sql\Condition

1 file declares its use of Condition

Condition.php in core/lib/Drupal/Core/Entity/Query/Sql/pgsql/Condition.php

6 string references to 'Condition'

ConditionAggregate::compile in core/lib/Drupal/Core/Entity/Query/Sql/ConditionAggregate.php

Compiles this conditional clause.

Connection::condition in core/lib/Drupal/Core/Database/Connection.php

Prepares and returns a CONDITION query object.

Connection::getDriverClass in core/lib/Drupal/Core/Database/Connection.php

Gets the driver-specific override class if any for the specified class.

ConnectionTest::providerGetDriverClass in core/tests/Drupal/Tests/Core/Database/ConnectionTest.php

Data provider for testGetDriverClass().

core.data_types.schema.yml in core/config/schema/core.data_types.schema.yml

core/config/schema/core.data_types.schema.yml

... See full list

File

core/lib/Drupal/Core/Entity/Query/Sql/Condition.php, line 12

Namespace

Drupal\Core\Entity\Query\Sql

class Condition extends ConditionBase {

  /**
   * Whether this condition is nested inside an OR condition.
   *
   * @var bool
   */
  protected $nestedInsideOrCondition = FALSE;

  /**
   * The SQL entity query object this condition belongs to.
   *
   * @var \Drupal\Core\Entity\Query\Sql\Query
   */
  protected $query;

  /**
   * {@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 = $this->query
      ->getTables($sql_query);
    foreach ($this->conditions as $condition) {
      if ($condition['field'] instanceof ConditionInterface) {
        $sql_condition = $sql_query
          ->getConnection()
          ->condition($condition['field']
          ->getConjunction());

        // Add the SQL query to the object before calling this method again.
        $sql_condition->sqlQuery = $sql_query;
        $condition['field']->nestedInsideOrCondition = $this->nestedInsideOrCondition || strtoupper($this->conjunction) === 'OR';
        $condition['field']
          ->compile($sql_condition);
        $conditionContainer
          ->condition($sql_condition);
      }
      else {
        $type = $this->nestedInsideOrCondition || strtoupper($this->conjunction) === 'OR' || $condition['operator'] === 'IS NULL' ? 'LEFT' : 'INNER';
        $field = $tables
          ->addField($condition['field'], $type, $condition['langcode']);

        // If the field is trying to query on %delta for a single value field
        // then the only supported delta is 0. No other value than 0 makes
        // sense. \Drupal\Core\Entity\Query\Sql\Tables::addField() returns 0 as
        // the field name for single value fields when querying on their %delta.
        if ($field === 0) {
          if ($condition['value'] != 0) {
            $conditionContainer
              ->alwaysFalse();
          }
          continue;
        }
        $condition['real_field'] = $field;
        static::translateCondition($condition, $sql_query, $tables
          ->isFieldCaseSensitive($condition['field']));

        // Add the translated conditions back to the condition container.
        if (isset($condition['where']) && isset($condition['where_args'])) {
          $conditionContainer
            ->where($condition['where'], $condition['where_args']);
        }
        else {
          $conditionContainer
            ->condition($field, $condition['value'], $condition['operator']);
        }
      }
    }
  }

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

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

  /**
   * Translates the string operators to SQL equivalents.
   *
   * @param array $condition
   *   The condition array.
   * @param \Drupal\Core\Database\Query\SelectInterface $sql_query
   *   Select query instance.
   * @param bool|null $case_sensitive
   *   If the condition should be case sensitive or not, NULL if the field does
   *   not define it.
   *
   * @see \Drupal\Core\Database\Query\ConditionInterface::condition()
   */
  public static function translateCondition(&$condition, SelectInterface $sql_query, $case_sensitive) {

    // // There is nothing we can do for IN ().
    if (is_array($condition['value'])) {
      return;
    }

    // Ensure that the default operator is set to simplify the cases below.
    if (empty($condition['operator'])) {
      $condition['operator'] = '=';
    }
    switch ($condition['operator']) {
      case '=':

        // If a field explicitly requests that queries should not be case
        // sensitive, use the LIKE operator, otherwise keep =.
        if ($case_sensitive === FALSE) {
          $condition['value'] = $sql_query
            ->escapeLike($condition['value']);
          $condition['operator'] = 'LIKE';
        }
        break;
      case '<>':

        // If a field explicitly requests that queries should not be case
        // sensitive, use the NOT LIKE operator, otherwise keep <>.
        if ($case_sensitive === FALSE) {
          $condition['value'] = $sql_query
            ->escapeLike($condition['value']);
          $condition['operator'] = 'NOT LIKE';
        }
        break;
      case 'STARTS_WITH':
        if ($case_sensitive) {
          $condition['operator'] = 'LIKE BINARY';
        }
        else {
          $condition['operator'] = 'LIKE';
        }
        $condition['value'] = $sql_query
          ->escapeLike($condition['value']) . '%';
        break;
      case 'CONTAINS':
        if ($case_sensitive) {
          $condition['operator'] = 'LIKE BINARY';
        }
        else {
          $condition['operator'] = 'LIKE';
        }
        $condition['value'] = '%' . $sql_query
          ->escapeLike($condition['value']) . '%';
        break;
      case 'ENDS_WITH':
        if ($case_sensitive) {
          $condition['operator'] = 'LIKE BINARY';
        }
        else {
          $condition['operator'] = 'LIKE';
        }
        $condition['value'] = '%' . $sql_query
          ->escapeLike($condition['value']);
        break;
    }
  }

}

Members

Name	Modifiers	Type	Description	Overrides
Condition::$nestedInsideOrCondition	protected	property	Whether this condition is nested inside an OR condition.
Condition::$query	protected	property	The SQL entity query object this condition belongs to. Overrides ConditionFundamentals::$query
Condition::compile	public	function	Compiles this conditional clause. Overrides ConditionInterface::compile
Condition::exists	public	function	Queries for the existence of a field. Overrides ConditionInterface::exists
Condition::notExists	public	function	Queries for the nonexistence of a field. Overrides ConditionInterface::notExists
Condition::translateCondition	public static	function	Translates the string operators to SQL equivalents.	1
ConditionBase::condition	public	function	Adds a condition. Overrides ConditionInterface::condition
ConditionFundamentals::$conditions	protected	property	Array of conditions.
ConditionFundamentals::$conjunction	protected	property	The conjunction of this condition group.
ConditionFundamentals::$namespaces	protected	property	List of potential namespaces of the classes belonging to this condition.
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.