class SelectExtender

Same name in other branches
  1. 8.9.x core/lib/Drupal/Core/Database/Query/SelectExtender.php \Drupal\Core\Database\Query\SelectExtender
  2. 10 core/lib/Drupal/Core/Database/Query/SelectExtender.php \Drupal\Core\Database\Query\SelectExtender
  3. 11.x core/lib/Drupal/Core/Database/Query/SelectExtender.php \Drupal\Core\Database\Query\SelectExtender

The base extender class for Select queries.

Hierarchy

Expanded class hierarchy of SelectExtender

5 files declare their use of SelectExtender
NodeSearch.php in core/modules/node/src/Plugin/Search/NodeSearch.php
SearchQuery.php in core/modules/search/src/SearchQuery.php
SelectExtenderTest.php in core/tests/Drupal/KernelTests/Core/Database/SelectExtenderTest.php
SelectTest.php in core/tests/Drupal/KernelTests/Core/Database/SelectTest.php
TaggingTest.php in core/tests/Drupal/KernelTests/Core/Database/TaggingTest.php

File

core/lib/Drupal/Core/Database/Query/SelectExtender.php, line 10

Namespace

Drupal\Core\Database\Query
View source
class SelectExtender implements SelectInterface {
    
    /**
     * The Select query object we are extending/decorating.
     *
     * @var \Drupal\Core\Database\Query\SelectInterface
     */
    protected $query;
    
    /**
     * The connection object on which to run this query.
     *
     * @var \Drupal\Core\Database\Connection
     */
    protected $connection;
    
    /**
     * A unique identifier for this query object.
     *
     * @var string
     */
    protected $uniqueIdentifier;
    
    /**
     * The placeholder counter.
     *
     * @var int
     */
    protected $placeholder = 0;
    public function __construct(SelectInterface $query, Connection $connection) {
        $this->uniqueIdentifier = uniqid('', TRUE);
        $this->query = $query;
        $this->connection = $connection;
    }
    
    /**
     * {@inheritdoc}
     */
    public function uniqueIdentifier() {
        return $this->uniqueIdentifier;
    }
    
    /**
     * {@inheritdoc}
     */
    public function nextPlaceholder() {
        return $this->placeholder++;
    }
    
    /**
     * {@inheritdoc}
     */
    public function addTag($tag) {
        $this->query
            ->addTag($tag);
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    public function hasTag($tag) {
        return $this->query
            ->hasTag($tag);
    }
    
    /**
     * {@inheritdoc}
     */
    public function hasAllTags() {
        return call_user_func_array([
            $this->query,
            'hasAllTags',
        ], func_get_args());
    }
    
    /**
     * {@inheritdoc}
     */
    public function hasAnyTag() {
        return call_user_func_array([
            $this->query,
            'hasAnyTag',
        ], func_get_args());
    }
    
    /**
     * {@inheritdoc}
     */
    public function addMetaData($key, $object) {
        $this->query
            ->addMetaData($key, $object);
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    public function getMetaData($key) {
        return $this->query
            ->getMetaData($key);
    }
    
    /**
     * {@inheritdoc}
     */
    public function condition($field, $value = NULL, $operator = '=') {
        $this->query
            ->condition($field, $value, $operator);
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    public function &conditions() {
        return $this->query
            ->conditions();
    }
    
    /**
     * {@inheritdoc}
     */
    public function arguments() {
        return $this->query
            ->arguments();
    }
    
    /**
     * {@inheritdoc}
     */
    public function where($snippet, $args = []) {
        $this->query
            ->where($snippet, $args);
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    public function compile(Connection $connection, PlaceholderInterface $queryPlaceholder) {
        return $this->query
            ->compile($connection, $queryPlaceholder);
    }
    
    /**
     * {@inheritdoc}
     */
    public function compiled() {
        return $this->query
            ->compiled();
    }
    
    /**
     * {@inheritdoc}
     */
    public function havingCondition($field, $value = NULL, $operator = '=') {
        $this->query
            ->havingCondition($field, $value, $operator);
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    public function &havingConditions() {
        return $this->query
            ->havingConditions();
    }
    
    /**
     * {@inheritdoc}
     */
    public function havingArguments() {
        return $this->query
            ->havingArguments();
    }
    
    /**
     * {@inheritdoc}
     */
    public function having($snippet, $args = []) {
        $this->query
            ->having($snippet, $args);
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    public function havingCompile(Connection $connection) {
        return $this->query
            ->havingCompile($connection);
    }
    
    /**
     * {@inheritdoc}
     */
    public function havingIsNull($field) {
        $this->query
            ->havingIsNull($field);
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    public function havingIsNotNull($field) {
        $this->query
            ->havingIsNotNull($field);
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    public function havingExists(SelectInterface $select) {
        $this->query
            ->havingExists($select);
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    public function havingNotExists(SelectInterface $select) {
        $this->query
            ->havingNotExists($select);
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    public function extend($extender_name) {
        // We cannot call $this->query->extend(), because with multiple extenders
        // you will replace all the earlier extenders with the last extender,
        // instead of creating list of objects that extend each other.
        $parts = explode('\\', $extender_name);
        $class = end($parts);
        $driver_class = $this->connection
            ->getDriverClass($class);
        if ($driver_class !== $class) {
            return new $driver_class($this, $this->connection);
        }
        return new $extender_name($this, $this->connection);
    }
    
    /* Alter accessors to expose the query data to alter hooks. */
    
    /**
     * {@inheritdoc}
     */
    public function &getFields() {
        return $this->query
            ->getFields();
    }
    
    /**
     * {@inheritdoc}
     */
    public function &getExpressions() {
        return $this->query
            ->getExpressions();
    }
    
    /**
     * {@inheritdoc}
     */
    public function &getOrderBy() {
        return $this->query
            ->getOrderBy();
    }
    
    /**
     * {@inheritdoc}
     */
    public function &getGroupBy() {
        return $this->query
            ->getGroupBy();
    }
    
    /**
     * {@inheritdoc}
     */
    public function &getTables() {
        return $this->query
            ->getTables();
    }
    
    /**
     * {@inheritdoc}
     */
    public function &getUnion() {
        return $this->query
            ->getUnion();
    }
    
    /**
     * {@inheritdoc}
     */
    public function escapeLike($string) {
        return $this->query
            ->escapeLike($string);
    }
    
    /**
     * {@inheritdoc}
     */
    public function escapeField($string) {
        $this->query
            ->escapeField($string);
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    public function getArguments(PlaceholderInterface $queryPlaceholder = NULL) {
        return $this->query
            ->getArguments($queryPlaceholder);
    }
    
    /**
     * {@inheritdoc}
     */
    public function isPrepared() {
        return $this->query
            ->isPrepared();
    }
    
    /**
     * {@inheritdoc}
     */
    public function preExecute(SelectInterface $query = NULL) {
        // If no query object is passed in, use $this.
        if (!isset($query)) {
            $query = $this;
        }
        return $this->query
            ->preExecute($query);
    }
    
    /**
     * {@inheritdoc}
     */
    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();
    }
    
    /**
     * {@inheritdoc}
     */
    public function distinct($distinct = TRUE) {
        $this->query
            ->distinct($distinct);
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    public function addField($table_alias, $field, $alias = NULL) {
        return $this->query
            ->addField($table_alias, $field, $alias);
    }
    
    /**
     * {@inheritdoc}
     */
    public function fields($table_alias, array $fields = []) {
        $this->query
            ->fields($table_alias, $fields);
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    public function addExpression($expression, $alias = NULL, $arguments = []) {
        return $this->query
            ->addExpression($expression, $alias, $arguments);
    }
    
    /**
     * {@inheritdoc}
     */
    public function join($table, $alias = NULL, $condition = NULL, $arguments = []) {
        return $this->query
            ->join($table, $alias, $condition, $arguments);
    }
    
    /**
     * {@inheritdoc}
     */
    public function innerJoin($table, $alias = NULL, $condition = NULL, $arguments = []) {
        return $this->query
            ->innerJoin($table, $alias, $condition, $arguments);
    }
    
    /**
     * {@inheritdoc}
     */
    public function leftJoin($table, $alias = NULL, $condition = NULL, $arguments = []) {
        return $this->query
            ->leftJoin($table, $alias, $condition, $arguments);
    }
    
    /**
     * {@inheritdoc}
     */
    public function addJoin($type, $table, $alias = NULL, $condition = NULL, $arguments = []) {
        return $this->query
            ->addJoin($type, $table, $alias, $condition, $arguments);
    }
    
    /**
     * {@inheritdoc}
     */
    public function orderBy($field, $direction = 'ASC') {
        $this->query
            ->orderBy($field, $direction);
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    public function orderRandom() {
        $this->query
            ->orderRandom();
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    public function range($start = NULL, $length = NULL) {
        $this->query
            ->range($start, $length);
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    public function union(SelectInterface $query, $type = '') {
        $this->query
            ->union($query, $type);
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    public function groupBy($field) {
        $this->query
            ->groupBy($field);
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    public function forUpdate($set = TRUE) {
        $this->query
            ->forUpdate($set);
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    public function countQuery() {
        return $this->query
            ->countQuery();
    }
    
    /**
     * {@inheritdoc}
     */
    public function isNull($field) {
        $this->query
            ->isNull($field);
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    public function isNotNull($field) {
        $this->query
            ->isNotNull($field);
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    public function exists(SelectInterface $select) {
        $this->query
            ->exists($select);
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    public function notExists(SelectInterface $select) {
        $this->query
            ->notExists($select);
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    public function alwaysFalse() {
        $this->query
            ->alwaysFalse();
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    public function __toString() {
        return (string) $this->query;
    }
    
    /**
     * {@inheritdoc}
     */
    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([
            $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 SelectInterface) {
            return $this;
        }
        else {
            return $return;
        }
    }
    
    /**
     * {@inheritdoc}
     */
    public function conditionGroupFactory($conjunction = 'AND') {
        return $this->connection
            ->condition($conjunction);
    }
    
    /**
     * {@inheritdoc}
     */
    public function andConditionGroup() {
        return $this->conditionGroupFactory('AND');
    }
    
    /**
     * {@inheritdoc}
     */
    public function orConditionGroup() {
        return $this->conditionGroupFactory('OR');
    }

}

Members

Title Sort descending Modifiers Object type Summary Overriden Title Overrides
SelectExtender::$connection protected property The connection object on which to run this query.
SelectExtender::$placeholder protected property The placeholder counter.
SelectExtender::$query protected property The Select query object we are extending/decorating.
SelectExtender::$uniqueIdentifier protected property A unique identifier for this query object.
SelectExtender::addExpression public function Adds an expression to the list of "fields" to be SELECTed. Overrides SelectInterface::addExpression
SelectExtender::addField public function Adds a field to the list to be SELECTed. Overrides SelectInterface::addField
SelectExtender::addJoin public function Join against another table in the database. Overrides SelectInterface::addJoin
SelectExtender::addMetaData public function Adds additional metadata to the query. Overrides AlterableInterface::addMetaData
SelectExtender::addTag public function Adds a tag to a query. Overrides AlterableInterface::addTag
SelectExtender::alwaysFalse public function Sets a condition that is always false. Overrides ConditionInterface::alwaysFalse
SelectExtender::andConditionGroup public function Creates a new group of conditions ANDed together. Overrides ConditionInterface::andConditionGroup
SelectExtender::arguments public function Gets a complete list of all values to insert into the prepared statement. Overrides ConditionInterface::arguments
SelectExtender::compile public function Compiles the saved conditions for later retrieval. Overrides ConditionInterface::compile
SelectExtender::compiled public function Check whether a condition has been previously compiled. Overrides ConditionInterface::compiled
SelectExtender::condition public function Helper function: builds the most common conditional clauses. Overrides ConditionInterface::condition
SelectExtender::conditionGroupFactory public function Creates an object holding a group of conditions. Overrides ConditionInterface::conditionGroupFactory
SelectExtender::conditions public function Gets the, possibly nested, list of conditions in this conditional clause. Overrides ConditionInterface::conditions 1
SelectExtender::countQuery public function Get the equivalent COUNT query of this query as a new query object. Overrides SelectInterface::countQuery 1
SelectExtender::distinct public function Sets this query to be DISTINCT. Overrides SelectInterface::distinct
SelectExtender::escapeField public function Escapes a field name string. Overrides SelectInterface::escapeField
SelectExtender::escapeLike public function Escapes characters that work as wildcard characters in a LIKE pattern. Overrides SelectInterface::escapeLike
SelectExtender::execute public function Runs the query against the database. Overrides SelectInterface::execute 2
SelectExtender::exists public function Sets a condition that the specified subquery returns values. Overrides ConditionInterface::exists
SelectExtender::extend public function Enhance this object by wrapping it in an extender object. Overrides ExtendableInterface::extend
SelectExtender::fields public function Add multiple fields from the same table to be SELECTed. Overrides SelectInterface::fields
SelectExtender::forUpdate public function Add FOR UPDATE to the query. Overrides SelectInterface::forUpdate
SelectExtender::getArguments public function Compiles and returns an associative array of the arguments for this prepared statement. Overrides SelectInterface::getArguments
SelectExtender::getExpressions public function Returns a reference to the expressions array for this query. Overrides SelectInterface::getExpressions
SelectExtender::getFields public function Returns a reference to the fields array for this query. Overrides SelectInterface::getFields
SelectExtender::getGroupBy public function Returns a reference to the group-by array for this query. Overrides SelectInterface::getGroupBy
SelectExtender::getMetaData public function Retrieves a given piece of metadata. Overrides AlterableInterface::getMetaData
SelectExtender::getOrderBy public function Returns a reference to the order by array for this query. Overrides SelectInterface::getOrderBy
SelectExtender::getTables public function Returns a reference to the tables array for this query. Overrides SelectInterface::getTables
SelectExtender::getUnion public function Returns a reference to the union queries for this query. Overrides SelectInterface::getUnion
SelectExtender::groupBy public function Groups the result set by the specified field. Overrides SelectInterface::groupBy
SelectExtender::hasAllTags public function Determines if a given query has all specified tags. Overrides AlterableInterface::hasAllTags
SelectExtender::hasAnyTag public function Determines if a given query has any specified tag. Overrides AlterableInterface::hasAnyTag
SelectExtender::hasTag public function Determines if a given query has a given tag. Overrides AlterableInterface::hasTag
SelectExtender::having public function Adds an arbitrary HAVING clause to the query. Overrides SelectInterface::having
SelectExtender::havingArguments public function Gets a list of all values to insert into the HAVING clause. Overrides SelectInterface::havingArguments
SelectExtender::havingCompile public function Compiles the HAVING clause for later retrieval. Overrides SelectInterface::havingCompile
SelectExtender::havingCondition public function Helper function to build most common HAVING conditional clauses. Overrides SelectInterface::havingCondition
SelectExtender::havingConditions public function Gets a list of all conditions in the HAVING clause. Overrides SelectInterface::havingConditions
SelectExtender::havingExists public function Sets a HAVING condition that the specified subquery returns values. Overrides SelectInterface::havingExists
SelectExtender::havingIsNotNull public function Sets a condition in the HAVING clause that the specified field be NOT NULL. Overrides SelectInterface::havingIsNotNull
SelectExtender::havingIsNull public function Sets a condition in the HAVING clause that the specified field be NULL. Overrides SelectInterface::havingIsNull
SelectExtender::havingNotExists public function Sets a HAVING condition that the specified subquery returns no values. Overrides SelectInterface::havingNotExists
SelectExtender::innerJoin public function Inner Join against another table in the database. Overrides SelectInterface::innerJoin
SelectExtender::isNotNull public function Sets a condition that the specified field be NOT NULL. Overrides ConditionInterface::isNotNull
SelectExtender::isNull public function Sets a condition that the specified field be NULL. Overrides ConditionInterface::isNull
SelectExtender::isPrepared public function Indicates if preExecute() has already been called on that object. Overrides SelectInterface::isPrepared
SelectExtender::join public function Default Join against another table in the database. Overrides SelectInterface::join
SelectExtender::leftJoin public function Left Outer Join against another table in the database. Overrides SelectInterface::leftJoin
SelectExtender::nextPlaceholder public function Returns the next placeholder ID for the query. Overrides PlaceholderInterface::nextPlaceholder
SelectExtender::notExists public function Sets a condition that the specified subquery returns no values. Overrides ConditionInterface::notExists
SelectExtender::orConditionGroup public function Creates a new group of conditions ORed together. Overrides ConditionInterface::orConditionGroup
SelectExtender::orderBy public function Orders the result set by a given field. Overrides SelectInterface::orderBy
SelectExtender::orderRandom public function Orders the result set by a random value. Overrides SelectInterface::orderRandom
SelectExtender::preExecute public function Generic preparation and validation for a SELECT query. Overrides SelectInterface::preExecute 1
SelectExtender::range public function Restricts a query to a given range in the result set. Overrides SelectInterface::range
SelectExtender::union public function Add another Select query to UNION to this one. Overrides SelectInterface::union
SelectExtender::uniqueIdentifier public function Returns a unique identifier for this object. Overrides PlaceholderInterface::uniqueIdentifier
SelectExtender::where public function Adds an arbitrary WHERE clause to the query. Overrides ConditionInterface::where
SelectExtender::__call public function Magic override for undefined methods.
SelectExtender::__clone public function Clone magic method. Overrides SelectInterface::__clone
SelectExtender::__construct public function 2
SelectExtender::__toString public function Returns a string representation of how the query will be executed in SQL. Overrides SelectInterface::__toString

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