interface QueryAggregateInterface in Drupal 8

Defines a interface for aggregated entity queries.

Hierarchy

• interface \Drupal\Core\Database\Query\AlterableInterface
  • interface \Drupal\Core\Entity\Query\QueryInterface
    • interface \Drupal\Core\Entity\Query\QueryAggregateInterface

3 files declare their use of QueryAggregateInterface

DrupalTest.php in core/tests/Drupal/Tests/Core/DrupalTest.php

Query.php in core/lib/Drupal/Core/Entity/Query/Null/Query.php

QueryAggregate.php in core/lib/Drupal/Core/Entity/Query/Sql/QueryAggregate.php

File

core/lib/Drupal/Core/Entity/Query/QueryAggregateInterface.php, line 8

Namespace

Drupal\Core\Entity\Query

interface QueryAggregateInterface extends QueryInterface {

  /**
   * Specifies a field and a function to aggregate on.
   *
   * Available functions: SUM, AVG, MIN, MAX and COUNT.
   *
   * @todo What about GROUP_CONCAT support?
   *
   * @param string $field
   *   The name of the field to aggregate by.
   * @param string $function
   *   The aggregation function, for example COUNT or MIN.
   * @param string $langcode
   *   (optional) The language code.
   * @param string $alias
   *   (optional) The key that will be used on the resultset.
   *
   * @return $this
   *   The called object.
   */
  public function aggregate($field, $function, $langcode = NULL, &$alias = NULL);

  /**
   * Specifies the field to group on.
   *
   * @param string $field
   *   The name of the field to group by.
   *
   * @return $this
   *   The called object.
   */
  public function groupBy($field);

  /**
   * Sets a condition for an aggregated value.
   *
   * @param string $field
   *   The name of the field to aggregate by.
   * @param string $function
   *   The aggregation function, for example COUNT or MIN.
   * @param mixed $value
   *   The actual value of the field.
   * @param $operator
   *   Possible values:
   *   - '=', '<>', '>', '>=', '<', '<=', 'STARTS_WITH', 'CONTAINS',
   *     'ENDS_WITH': These operators expect $value to be a literal of the
   *     same type as the column.
   *   - 'IN', 'NOT IN': These operators expect $value to be an array of
   *     literals of the same type as the column.
   *   - 'BETWEEN': This operator expects $value to be an array of two literals
   *     of the same type as the column.
   * @param string $langcode
   *   (optional) The language code.
   *
   * @return $this
   *   The called object.
   *
   * @see \Drupal\Core\Entity\Query\QueryInterface::condition()
   */
  public function conditionAggregate($field, $function = NULL, $value = NULL, $operator = '=', $langcode = NULL);

  /**
   * Queries for the existence of a field.
   *
   * @param string $field
   *   The name of the field.
   * @param string $function
   *   The aggregate function.
   * @param $langcode
   *   (optional) The language code.
   *
   * @return $this
   *   The called object.
   */
  public function existsAggregate($field, $function, $langcode = NULL);

  /**
   * Queries for the nonexistence of a field.
   *
   * @param string $field
   *   The name of a field.
   * @param string $function
   *   The aggregate function.
   * @param string $langcode
   *   (optional) The language code.
   *
   * @return $this
   *   The called object.
   */
  public function notExistsAggregate($field, $function, $langcode = NULL);

  /**
   * Creates an object holding a group of conditions.
   *
   * See andConditionAggregateGroup() and orConditionAggregateGroup() for more.
   *
   * @param string $conjunction
   *   - AND (default): this is the equivalent of andConditionAggregateGroup().
   *   - OR: this is the equivalent of andConditionAggregateGroup().
   *
   * @return ConditionInterface
   *   An object holding a group of conditions.
   */
  public function conditionAggregateGroupFactory($conjunction = 'AND');

  /**
   * Sorts by an aggregated value.
   *
   * @param string $field
   *   The name of a field.
   * @param string $function
   *   The aggregate function. This is only marked optional for interface
   *   compatibility, it is illegal to leave it out.
   * @param string $direction
   *   The order of sorting, either DESC for descending of ASC for ascending.
   * @param string $langcode
   *   (optional) The language code.
   *
   * @return $this
   *   The called object.
   */
  public function sortAggregate($field, $function, $direction = 'ASC', $langcode = NULL);

  /**
   * Executes the aggregate query.
   *
   * @return array
   *   A list of result row arrays. Each result row contains the aggregate
   *   results as keys and also the groupBy columns as keys:
   * @code
   * $result = $query
   *   ->aggregate('nid', 'count')
   *   ->condition('status', 1)
   *   ->groupby('type')
   *   ->executeAggregate();
   * @endcode
   * Will return:
   * @code
   * $result[0] = array('count_nid' => 3, 'type' => 'page');
   * $result[1] = array('count_nid' => 1, 'type' => 'poll');
   * $result[2] = array('count_nid' => 4, 'type' => 'story');
   * @endcode
   */
  public function execute();

}

Members

Name	Modifiers	Type	Description	Overrides
AlterableInterface::addMetaData	public	function	Adds additional metadata to the query.	3
AlterableInterface::addTag	public	function	Adds a tag to a query.	3
AlterableInterface::getMetaData	public	function	Retrieves a given piece of metadata.	3
AlterableInterface::hasAllTags	public	function	Determines if a given query has all specified tags.	3
AlterableInterface::hasAnyTag	public	function	Determines if a given query has any specified tag.	3
AlterableInterface::hasTag	public	function	Determines if a given query has a given tag.	3
QueryAggregateInterface::aggregate	public	function	Specifies a field and a function to aggregate on.
QueryAggregateInterface::conditionAggregate	public	function	Sets a condition for an aggregated value.
QueryAggregateInterface::conditionAggregateGroupFactory	public	function	Creates an object holding a group of conditions.	2
QueryAggregateInterface::execute	public	function	Executes the aggregate query. Overrides QueryInterface::execute
QueryAggregateInterface::existsAggregate	public	function	Queries for the existence of a field.	2
QueryAggregateInterface::groupBy	public	function	Specifies the field to group on.
QueryAggregateInterface::notExistsAggregate	public	function	Queries for the nonexistence of a field.	2
QueryAggregateInterface::sortAggregate	public	function	Sorts by an aggregated value.
QueryInterface::accessCheck	public	function		1
QueryInterface::allRevisions	public	function	Queries all the revisions.	1
QueryInterface::andConditionGroup	public	function	Creates a new group of conditions ANDed together.	1
QueryInterface::condition	public	function	Add a condition to the query or a condition group.	1
QueryInterface::count	public	function	Makes this a count query.	1
QueryInterface::currentRevision	public	function	Queries the current revision.	1
QueryInterface::exists	public	function	Queries for a non-empty value on a field.	1
QueryInterface::getEntityTypeId	public	function	Gets the ID of the entity type for this query.	1
QueryInterface::latestRevision	public	function	Queries the latest revision.	1
QueryInterface::notExists	public	function	Queries for an empty field.	1
QueryInterface::orConditionGroup	public	function	Creates a new group of conditions ORed together.	1
QueryInterface::pager	public	function	Enables a pager for the query.	1
QueryInterface::range	public	function		1
QueryInterface::sort	public	function		1
QueryInterface::tableSort	public	function	Enables sortable tables for this query.	1