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class Delete in Drupal 9

Same name in this branch
  1. 9 core/lib/Drupal/Core/Database/Query/Delete.php \Drupal\Core\Database\Query\Delete
  2. 9 core/lib/Drupal/Core/Database/Driver/pgsql/Delete.php \Drupal\Core\Database\Driver\pgsql\Delete
  3. 9 core/tests/fixtures/database_drivers/module/corefake/src/Driver/Database/corefakeWithAllCustomClasses/Delete.php \Drupal\corefake\Driver\Database\corefakeWithAllCustomClasses\Delete
  4. 9 core/modules/system/tests/modules/driver_test/src/Driver/Database/DrivertestPgsql/Delete.php \Drupal\driver_test\Driver\Database\DrivertestPgsql\Delete
Same name and namespace in other branches
  1. 8 core/lib/Drupal/Core/Database/Query/Delete.php \Drupal\Core\Database\Query\Delete

General class for an abstracted DELETE operation.

Hierarchy

Expanded class hierarchy of Delete

Related topics

3 files declare their use of Delete
Connection.php in core/lib/Drupal/Core/Database/Connection.php
Delete.php in core/lib/Drupal/Core/Database/Driver/pgsql/Delete.php
Delete.php in core/tests/fixtures/database_drivers/module/corefake/src/Driver/Database/corefakeWithAllCustomClasses/Delete.php
161 string references to 'Delete'
aggregator.links.task.yml in core/modules/aggregator/aggregator.links.task.yml
core/modules/aggregator/aggregator.links.task.yml
AggregatorController::adminOverview in core/modules/aggregator/src/Controller/AggregatorController.php
Displays the aggregator administration page.
AggregatorTestBase::deleteFeed in core/modules/aggregator/tests/src/Functional/AggregatorTestBase.php
Deletes an aggregator feed.
BanAdmin::buildForm in core/modules/ban/src/Form/BanAdmin.php
BanDelete::getConfirmText in core/modules/ban/src/Form/BanDelete.php
Returns a caption for the button that confirms the action.

... See full list

File

core/lib/Drupal/Core/Database/Query/Delete.php, line 13

Namespace

Drupal\Core\Database\Query
View source
class Delete extends Query implements ConditionInterface {
  use QueryConditionTrait;

  /**
   * The table from which to delete.
   *
   * @var string
   */
  protected $table;

  /**
   * Constructs a Delete object.
   *
   * @param \Drupal\Core\Database\Connection $connection
   *   A Connection object.
   * @param string $table
   *   Name of the table to associate with this query.
   * @param array $options
   *   Array of database options.
   */
  public function __construct(Connection $connection, $table, array $options = []) {
    $options['return'] = Database::RETURN_AFFECTED;
    parent::__construct($connection, $options);
    $this->table = $table;
    $this->condition = $this->connection
      ->condition('AND');
  }

  /**
   * Executes the DELETE query.
   *
   * @return int
   *   The number of rows affected by the delete query.
   */
  public function execute() {
    $values = [];
    if (count($this->condition)) {
      $this->condition
        ->compile($this->connection, $this);
      $values = $this->condition
        ->arguments();
    }
    $stmt = $this->connection
      ->prepareStatement((string) $this, $this->queryOptions, TRUE);
    try {
      $stmt
        ->execute($values, $this->queryOptions);
      return $stmt
        ->rowCount();
    } catch (\Exception $e) {
      $this->connection
        ->exceptionHandler()
        ->handleExecutionException($e, $stmt, $values, $this->queryOptions);
    }
  }

  /**
   * Implements PHP magic __toString method to convert the query to a string.
   *
   * @return string
   *   The prepared statement.
   */
  public function __toString() {

    // Create a sanitized comment string to prepend to the query.
    $comments = $this->connection
      ->makeComment($this->comments);
    $query = $comments . 'DELETE FROM {' . $this->connection
      ->escapeTable($this->table) . '} ';
    if (count($this->condition)) {
      $this->condition
        ->compile($this->connection, $this);
      $query .= "\nWHERE " . $this->condition;
    }
    return $query;
  }

}

Members

Namesort descending Modifiers Type Description Overrides
Delete::$table protected property The table from which to delete.
Delete::execute public function Executes the DELETE query. Overrides Query::execute 1
Delete::__construct public function Constructs a Delete object. Overrides Query::__construct
Delete::__toString public function Implements PHP magic __toString method to convert the query to a string. Overrides Query::__toString
Query::$comments protected property An array of comments that can be prepended to a query.
Query::$connection protected property The connection object on which to run this query.
Query::$connectionKey protected property The key of the connection object.
Query::$connectionTarget protected property The target of the connection object.
Query::$nextPlaceholder protected property The placeholder counter.
Query::$queryOptions protected property The query options to pass on to the connection object.
Query::$uniqueIdentifier protected property A unique identifier for this query object.
Query::comment public function Adds a comment to the query.
Query::getComments public function Returns a reference to the comments array for the query.
Query::getConnection public function Gets the database connection to be used for the query.
Query::nextPlaceholder public function Gets the next placeholder value for this query object. Overrides PlaceholderInterface::nextPlaceholder
Query::uniqueIdentifier public function Returns a unique identifier for this object. Overrides PlaceholderInterface::uniqueIdentifier
Query::__clone public function Implements the magic __clone function. 1
Query::__sleep public function Implements the magic __sleep function to disconnect from the database.
Query::__wakeup public function Implements the magic __wakeup function to reconnect to the database.
QueryConditionTrait::$condition protected property The condition object for this query.
QueryConditionTrait::alwaysFalse public function
QueryConditionTrait::andConditionGroup public function
QueryConditionTrait::arguments public function 1
QueryConditionTrait::compile public function 1
QueryConditionTrait::compiled public function 1
QueryConditionTrait::condition public function
QueryConditionTrait::conditionGroupFactory public function
QueryConditionTrait::conditions public function
QueryConditionTrait::exists public function
QueryConditionTrait::isNotNull public function
QueryConditionTrait::isNull public function
QueryConditionTrait::notExists public function
QueryConditionTrait::orConditionGroup public function
QueryConditionTrait::where public function