class SelectQueryExtender in Drupal 7

The base extender class for Select queries.

Hierarchy

class \SelectQueryExtender implements SelectQueryInterface

Expanded class hierarchy of SelectQueryExtender

3 string references to 'SelectQueryExtender'

DatabaseTaggingTestCase::testExtenderHasAllTags in modules/simpletest/tests/database_test.test: Test extended query tagging "has all of these tags" functionality.
DatabaseTaggingTestCase::testExtenderHasAnyTag in modules/simpletest/tests/database_test.test: Test extended query tagging "has at least one of these tags" functionality.
DatabaseTaggingTestCase::testExtenderHasTag in modules/simpletest/tests/database_test.test: Confirm that an extended query has a "tag" added to it.

File

includes/database/select.inc, line 536

View source

class SelectQueryExtender implements SelectQueryInterface {

  /**
   * The SelectQuery object we are extending/decorating.
   *
   * @var SelectQueryInterface
   */
  protected $query;

  /**
   * The connection object on which to run this query.
   *
   * @var DatabaseConnection
   */
  protected $connection;

  /**
   * A unique identifier for this query object.
   */
  protected $uniqueIdentifier;

  /**
   * The placeholder counter.
   */
  protected $placeholder = 0;
  public function __construct(SelectQueryInterface $query, DatabaseConnection $connection) {
    $this->uniqueIdentifier = uniqid('', TRUE);
    $this->query = $query;
    $this->connection = $connection;
  }

  /**
   * Implements QueryPlaceholderInterface::uniqueIdentifier().
   */
  public function uniqueIdentifier() {
    return $this->uniqueIdentifier;
  }

  /**
   * Implements QueryPlaceholderInterface::nextPlaceholder().
   */
  public function nextPlaceholder() {
    return $this->placeholder++;
  }

  /* Implementations of QueryAlterableInterface. */
  public function addTag($tag) {
    $this->query
      ->addTag($tag);
    return $this;
  }
  public function hasTag($tag) {
    return $this->query
      ->hasTag($tag);
  }
  public function hasAllTags() {
    $args = func_get_args();
    return call_user_func_array(array(
      $this->query,
      'hasAllTags',
    ), $args);
  }
  public function hasAnyTag() {
    $args = func_get_args();
    return call_user_func_array(array(
      $this->query,
      'hasAnyTag',
    ), $args);
  }
  public function addMetaData($key, $object) {
    $this->query
      ->addMetaData($key, $object);
    return $this;
  }
  public function getMetaData($key) {
    return $this->query
      ->getMetaData($key);
  }

  /* Implementations of QueryConditionInterface for the WHERE clause. */
  public function condition($field, $value = NULL, $operator = NULL) {
    $this->query
      ->condition($field, $value, $operator);
    return $this;
  }
  public function &conditions() {
    return $this->query
      ->conditions();
  }
  public function arguments() {
    return $this->query
      ->arguments();
  }
  public function where($snippet, $args = array()) {
    $this->query
      ->where($snippet, $args);
    return $this;
  }
  public function compile(DatabaseConnection $connection, QueryPlaceholderInterface $queryPlaceholder) {
    return $this->query
      ->compile($connection, $queryPlaceholder);
  }
  public function compiled() {
    return $this->query
      ->compiled();
  }

  /* Implementations of QueryConditionInterface for the HAVING clause. */
  public function havingCondition($field, $value = NULL, $operator = '=') {
    $this->query
      ->havingCondition($field, $value, $operator);
    return $this;
  }
  public function &havingConditions() {
    return $this->query
      ->havingConditions();
  }
  public function havingArguments() {
    return $this->query
      ->havingArguments();
  }
  public function having($snippet, $args = array()) {
    $this->query
      ->having($snippet, $args);
    return $this;
  }
  public function havingCompile(DatabaseConnection $connection) {
    return $this->query
      ->havingCompile($connection);
  }

  /* Implementations of QueryExtendableInterface. */
  public function extend($extender_name) {

    // The extender can be anywhere so this needs to go to the registry, which
    // is surely loaded by now.
    $class = $this->connection
      ->getDriverClass($extender_name, array(), TRUE);
    return new $class($this, $this->connection);
  }

  /* Alter accessors to expose the query data to alter hooks. */
  public function &getFields() {
    return $this->query
      ->getFields();
  }
  public function &getExpressions() {
    return $this->query
      ->getExpressions();
  }
  public function &getOrderBy() {
    return $this->query
      ->getOrderBy();
  }
  public function &getGroupBy() {
    return $this->query
      ->getGroupBy();
  }
  public function &getTables() {
    return $this->query
      ->getTables();
  }
  public function &getUnion() {
    return $this->query
      ->getUnion();
  }
  public function getArguments(QueryPlaceholderInterface $queryPlaceholder = NULL) {
    return $this->query
      ->getArguments($queryPlaceholder);
  }
  public function isPrepared() {
    return $this->query
      ->isPrepared();
  }
  public function preExecute(SelectQueryInterface $query = NULL) {

    // If no query object is passed in, use $this.
    if (!isset($query)) {
      $query = $this;
    }
    return $this->query
      ->preExecute($query);
  }
  public function execute() {

    // By calling preExecute() here, we force it to preprocess the extender
    // object rather than just the base query object.  That means
    // hook_query_alter() gets access to the extended object.
    if (!$this
      ->preExecute($this)) {
      return NULL;
    }
    return $this->query
      ->execute();
  }
  public function distinct($distinct = TRUE) {
    $this->query
      ->distinct($distinct);
    return $this;
  }
  public function addField($table_alias, $field, $alias = NULL) {
    return $this->query
      ->addField($table_alias, $field, $alias);
  }
  public function fields($table_alias, array $fields = array()) {
    $this->query
      ->fields($table_alias, $fields);
    return $this;
  }
  public function addExpression($expression, $alias = NULL, $arguments = array()) {
    return $this->query
      ->addExpression($expression, $alias, $arguments);
  }
  public function join($table, $alias = NULL, $condition = NULL, $arguments = array()) {
    return $this->query
      ->join($table, $alias, $condition, $arguments);
  }
  public function innerJoin($table, $alias = NULL, $condition = NULL, $arguments = array()) {
    return $this->query
      ->innerJoin($table, $alias, $condition, $arguments);
  }
  public function leftJoin($table, $alias = NULL, $condition = NULL, $arguments = array()) {
    return $this->query
      ->leftJoin($table, $alias, $condition, $arguments);
  }
  public function rightJoin($table, $alias = NULL, $condition = NULL, $arguments = array()) {
    return $this->query
      ->rightJoin($table, $alias, $condition, $arguments);
  }
  public function addJoin($type, $table, $alias = NULL, $condition = NULL, $arguments = array()) {
    return $this->query
      ->addJoin($type, $table, $alias, $condition, $arguments);
  }
  public function orderBy($field, $direction = 'ASC') {
    $this->query
      ->orderBy($field, $direction);
    return $this;
  }
  public function orderRandom() {
    $this->query
      ->orderRandom();
    return $this;
  }
  public function range($start = NULL, $length = NULL) {
    $this->query
      ->range($start, $length);
    return $this;
  }
  public function union(SelectQueryInterface $query, $type = '') {
    $this->query
      ->union($query, $type);
    return $this;
  }
  public function groupBy($field) {
    $this->query
      ->groupBy($field);
    return $this;
  }
  public function forUpdate($set = TRUE) {
    $this->query
      ->forUpdate($set);
    return $this;
  }
  public function countQuery() {
    return $this->query
      ->countQuery();
  }
  function isNull($field) {
    $this->query
      ->isNull($field);
    return $this;
  }
  function isNotNull($field) {
    $this->query
      ->isNotNull($field);
    return $this;
  }
  public function exists(SelectQueryInterface $select) {
    $this->query
      ->exists($select);
    return $this;
  }
  public function notExists(SelectQueryInterface $select) {
    $this->query
      ->notExists($select);
    return $this;
  }
  public function __toString() {
    return (string) $this->query;
  }
  public function __clone() {
    $this->uniqueIdentifier = uniqid('', TRUE);

    // We need to deep-clone the query we're wrapping, which in turn may
    // deep-clone other objects.  Exciting!
    $this->query = clone $this->query;
  }

  /**
   * Magic override for undefined methods.
   *
   * If one extender extends another extender, then methods in the inner extender
   * will not be exposed on the outer extender.  That's because we cannot know
   * in advance what those methods will be, so we cannot provide wrapping
   * implementations as we do above.  Instead, we use this slower catch-all method
   * to handle any additional methods.
   */
  public function __call($method, $args) {
    $return = call_user_func_array(array(
      $this->query,
      $method,
    ), $args);

    // Some methods will return the called object as part of a fluent interface.
    // Others will return some useful value.  If it's a value, then the caller
    // probably wants that value.  If it's the called object, then we instead
    // return this object.  That way we don't "lose" an extender layer when
    // chaining methods together.
    if ($return instanceof SelectQueryInterface) {
      return $this;
    }
    else {
      return $return;
    }
  }

}

Members

Name	Modifiers	Type	Description	Overrides
SelectQueryExtender::$connection	protected	property	The connection object on which to run this query.
SelectQueryExtender::$placeholder	protected	property	The placeholder counter.
SelectQueryExtender::$query	protected	property	The SelectQuery object we are extending/decorating.
SelectQueryExtender::$uniqueIdentifier	protected	property	A unique identifier for this query object.
SelectQueryExtender::addExpression	public	function	Adds an expression to the list of "fields" to be SELECTed. Overrides SelectQueryInterface::addExpression
SelectQueryExtender::addField	public	function	Adds a field to the list to be SELECTed. Overrides SelectQueryInterface::addField
SelectQueryExtender::addJoin	public	function	Join against another table in the database. Overrides SelectQueryInterface::addJoin
SelectQueryExtender::addMetaData	public	function	Adds additional metadata to the query. Overrides QueryAlterableInterface::addMetaData
SelectQueryExtender::addTag	public	function	Adds a tag to a query. Overrides QueryAlterableInterface::addTag
SelectQueryExtender::arguments	public	function	Gets a complete list of all values to insert into the prepared statement. Overrides QueryConditionInterface::arguments
SelectQueryExtender::compile	public	function	Compiles the saved conditions for later retrieval. Overrides QueryConditionInterface::compile
SelectQueryExtender::compiled	public	function	Check whether a condition has been previously compiled. Overrides QueryConditionInterface::compiled
SelectQueryExtender::condition	public	function	Helper function: builds the most common conditional clauses. Overrides QueryConditionInterface::condition
SelectQueryExtender::conditions	public	function	Gets a complete list of all conditions in this conditional clause. Overrides QueryConditionInterface::conditions
SelectQueryExtender::countQuery	public	function	Get the equivalent COUNT query of this query as a new query object. Overrides SelectQueryInterface::countQuery	1
SelectQueryExtender::distinct	public	function	Sets this query to be DISTINCT. Overrides SelectQueryInterface::distinct
SelectQueryExtender::execute	public	function		2
SelectQueryExtender::exists	public	function	Sets a condition that the specified subquery returns values. Overrides QueryConditionInterface::exists
SelectQueryExtender::extend	public	function	Enhance this object by wrapping it in an extender object. Overrides QueryExtendableInterface::extend
SelectQueryExtender::fields	public	function	Add multiple fields from the same table to be SELECTed. Overrides SelectQueryInterface::fields
SelectQueryExtender::forUpdate	public	function	Add FOR UPDATE to the query. Overrides SelectQueryInterface::forUpdate
SelectQueryExtender::getArguments	public	function	Compiles and returns an associative array of the arguments for this prepared statement. Overrides SelectQueryInterface::getArguments
SelectQueryExtender::getExpressions	public	function	Returns a reference to the expressions array for this query. Overrides SelectQueryInterface::getExpressions
SelectQueryExtender::getFields	public	function	Returns a reference to the fields array for this query. Overrides SelectQueryInterface::getFields
SelectQueryExtender::getGroupBy	public	function	Returns a reference to the group-by array for this query. Overrides SelectQueryInterface::getGroupBy
SelectQueryExtender::getMetaData	public	function	Retrieves a given piece of metadata. Overrides QueryAlterableInterface::getMetaData
SelectQueryExtender::getOrderBy	public	function	Returns a reference to the order by array for this query. Overrides SelectQueryInterface::getOrderBy
SelectQueryExtender::getTables	public	function	Returns a reference to the tables array for this query. Overrides SelectQueryInterface::getTables
SelectQueryExtender::getUnion	public	function	Returns a reference to the union queries for this query. This include queries for UNION, UNION ALL, and UNION DISTINCT. Overrides SelectQueryInterface::getUnion
SelectQueryExtender::groupBy	public	function	Groups the result set by the specified field. Overrides SelectQueryInterface::groupBy
SelectQueryExtender::hasAllTags	public	function	Determines if a given query has all specified tags. Overrides QueryAlterableInterface::hasAllTags
SelectQueryExtender::hasAnyTag	public	function	Determines if a given query has any specified tag. Overrides QueryAlterableInterface::hasAnyTag
SelectQueryExtender::hasTag	public	function	Determines if a given query has a given tag. Overrides QueryAlterableInterface::hasTag
SelectQueryExtender::having	public	function
SelectQueryExtender::havingArguments	public	function
SelectQueryExtender::havingCompile	public	function
SelectQueryExtender::havingCondition	public	function	Helper function to build most common HAVING conditional clauses. Overrides SelectQueryInterface::havingCondition
SelectQueryExtender::havingConditions	public	function
SelectQueryExtender::innerJoin	public	function	Inner Join against another table in the database. Overrides SelectQueryInterface::innerJoin
SelectQueryExtender::isNotNull		function	Sets a condition that the specified field be NOT NULL. Overrides QueryConditionInterface::isNotNull
SelectQueryExtender::isNull		function	Sets a condition that the specified field be NULL. Overrides QueryConditionInterface::isNull
SelectQueryExtender::isPrepared	public	function	Indicates if preExecute() has already been called on that object. Overrides SelectQueryInterface::isPrepared
SelectQueryExtender::join	public	function	Default Join against another table in the database. Overrides SelectQueryInterface::join
SelectQueryExtender::leftJoin	public	function	Left Outer Join against another table in the database. Overrides SelectQueryInterface::leftJoin
SelectQueryExtender::nextPlaceholder	public	function	Implements QueryPlaceholderInterface::nextPlaceholder(). Overrides QueryPlaceholderInterface::nextPlaceholder
SelectQueryExtender::notExists	public	function	Sets a condition that the specified subquery returns no values. Overrides QueryConditionInterface::notExists
SelectQueryExtender::orderBy	public	function	Orders the result set by a given field. Overrides SelectQueryInterface::orderBy
SelectQueryExtender::orderRandom	public	function	Orders the result set by a random value. Overrides SelectQueryInterface::orderRandom
SelectQueryExtender::preExecute	public	function	Generic preparation and validation for a SELECT query. Overrides SelectQueryInterface::preExecute
SelectQueryExtender::range	public	function	Restricts a query to a given range in the result set. Overrides SelectQueryInterface::range
SelectQueryExtender::rightJoin	public	function	Right Outer Join against another table in the database. Overrides SelectQueryInterface::rightJoin
SelectQueryExtender::union	public	function	Add another Select query to UNION to this one. Overrides SelectQueryInterface::union
SelectQueryExtender::uniqueIdentifier	public	function	Implements QueryPlaceholderInterface::uniqueIdentifier(). Overrides QueryPlaceholderInterface::uniqueIdentifier
SelectQueryExtender::where	public	function	Adds an arbitrary WHERE clause to the query. Overrides QueryConditionInterface::where
SelectQueryExtender::__call	public	function	Magic override for undefined methods.
SelectQueryExtender::__clone	public	function	Clone magic method. Overrides SelectQueryInterface::__clone
SelectQueryExtender::__construct	public	function		2
SelectQueryExtender::__toString	public	function

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class SelectQueryExtender in Drupal 7

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