Fab\Vidi\Domain\Repository\ContentRepository

Complexity

Total Complexity

87

Size/Duplication

Total Lines	834
Duplicated Lines	11.03 %

Coupling/Cohesion

Components	1
Dependencies	12

Importance

Changes	9
Bugs	0	Features	0

42 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	4	1
A	findAll()	0	5	1
B	findDistinctValues()	24	24	3
B	countDistinctValues()	24	24	3
A	findByUid()	0	4	1
A	findIn()	0	6	1
C	findBy()	0	35	7
A	findOneBy()	0	19	3
A	countBy()	0	13	2
A	localize()	14	14	1
A	update()	0	13	1
A	remove()	0	9	1
A	move()	13	13	1
A	copy()	13	13	1
A	add()	0	4	1
A	countAll()	0	5	1
A	removeAll()	0	4	1
A	findByIdentifier()	0	13	2
B	__call()	4	16	7
B	createQuery()	0	24	3
A	setDefaultOrderings()	0	4	1
A	setDefaultQuerySettings()	0	4	1
A	resetDefaultQuerySettings()	0	4	1
A	getErrorMessages()	0	4	1
A	setSourceFieldName()	0	5	1
A	getDataType()	0	4	1
A	hasForeignRelationIn()	0	4	1
A	getForeignRelationFrom()	0	5	1
B	computeConstraints()	0	34	6
B	computeSearchTermConstraint()	0	31	6
A	isSuitableForLike()	0	19	4
B	computeConstraint()	0	48	6
A	getDataHandler()	0	7	2
B	processMagicCall()	0	25	5
A	getDataHandlerFactory()	0	4	1
A	isBackendMode()	0	4	1
A	getFieldPathResolver()	0	4	1
A	getObjectManager()	0	4	1
A	getContentValidator()	0	4	1
A	getLanguageValidator()	0	4	1
A	emitPostProcessConstraintsSignal()	0	13	1
A	getSignalSlotDispatcher()	0	4	1

<?php
namespace Fab\Vidi\Domain\Repository;

/**
 * This file is part of the TYPO3 CMS project.
 *
 * It is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, either version 2
 * of the License, or any later version.
 *
 * For the full copyright and license information, please read the
 * LICENSE.txt file that was distributed with this source code.
 *
 * The TYPO3 project - inspiring people to share!
 */

use Fab\Vidi\DataHandler\DataHandlerFactory;
use Fab\Vidi\Domain\Validator\ContentValidator;
use Fab\Vidi\Domain\Validator\LanguageValidator;
use Fab\Vidi\Persistence\QuerySettings;
use Fab\Vidi\Resolver\FieldPathResolver;
use TYPO3\CMS\Core\DataHandling\DataHandler;
use TYPO3\CMS\Core\Utility\GeneralUtility;
use TYPO3\CMS\Core\Utility\MathUtility;
use TYPO3\CMS\Extbase\Object\ObjectManager;
use TYPO3\CMS\Extbase\Persistence\Generic\Exception\UnsupportedMethodException;
use TYPO3\CMS\Extbase\Persistence\Generic\QuerySettingsInterface;
use TYPO3\CMS\Extbase\Persistence\RepositoryInterface;
use Fab\Vidi\Converter\Property;
use Fab\Vidi\DataHandler\ProcessAction;
use Fab\Vidi\Domain\Model\Content;
use Fab\Vidi\Persistence\Matcher;
use Fab\Vidi\Persistence\Order;
use Fab\Vidi\Persistence\Query;
use Fab\Vidi\Tca\Tca;
use TYPO3\CMS\Extbase\Persistence\Generic\Qom\ConstraintInterface;

/**
 * Repository for accessing Content
 */
class ContentRepository implements RepositoryInterface
{

    /**
     * Tell whether it is a raw result (array) or object being returned.
     *
     * @var bool
     */
    protected $rawResult = false;

    /**
     * The data type to be returned, e.g fe_users, fe_groups, tt_content, etc...
     *
     * @var string
     */
    protected $dataType;

    /**
     * The source field is useful in the context of MM relations to know who is the caller
     * e.g findByItems which eventually corresponds to a field name.
     *
     * @var string
     */
    protected $sourceFieldName = '';

    /**
     * @var array
     */
    protected $errorMessages = array();

    /**
     * @var QuerySettingsInterface
     */
    protected $defaultQuerySettings;

    /**
     * Constructor
     *
     * @param string $dataType
     */
    public function __construct($dataType)
    {
        $this->dataType = $dataType;
    }

    /**
     * Returns all objects of this repository.
     *
     * @return Content[]
     */
    public function findAll()
    {
        $query = $this->createQuery();
        return $query->execute();
    }

    /**
     * Returns all "distinct" values for a given property.
     *
     * @param string $propertyName
     * @param Matcher $matcher
     * @return Content[]
     */
    public function findDistinctValues($propertyName, Matcher $matcher = null)

This method seems to be duplicated in your project.

    {
        $query = $this->createQuery();
        $query->setDistinct($propertyName);

        // Remove empty values from selection.
        $constraint = $query->logicalNot($query->equals($propertyName, ''));

        // Add some additional constraints from the Matcher object.
        $matcherConstraint = null;
        if (!is_null($matcher)) {
            $matcherConstraint = $this->computeConstraints($query, $matcher);
        }

        // Assemble the final constraints or not.
        if ($matcherConstraint) {
            $query->logicalAnd($matcherConstraint, $constraint);
            $query->matching($query->logicalAnd($matcherConstraint, $constraint));
        } else {
            $query->matching($constraint);
        }

        return $query->execute();
    }

    /**
     * Returns all "distinct" values for a given property.
     *
     * @param string $propertyName
     * @param Matcher $matcher
     * @return int
     */
    public function countDistinctValues($propertyName, Matcher $matcher = null)

This method seems to be duplicated in your project.

    {
        $query = $this->createQuery();
        $query->setDistinct($propertyName);

        // Remove empty values from selection.
        $constraint = $query->logicalNot($query->equals($propertyName, ''));

        // Add some additional constraints from the Matcher object.
        $matcherConstraint = null;
        if (!is_null($matcher)) {
            $matcherConstraint = $this->computeConstraints($query, $matcher);
        }

        // Assemble the final constraints or not.
        if ($matcherConstraint) {
            $query->logicalAnd($matcherConstraint, $constraint);
            $query->matching($query->logicalAnd($matcherConstraint, $constraint));
        } else {
            $query->matching($constraint);
        }

        return $query->count();
    }

    /**
     * Finds an object matching the given identifier.
     *
     * @param int $uid The identifier of the object to find
     * @return Content|null
     * @api
     */
    public function findByUid($uid)
    {
        return $this->findByIdentifier($uid);
    }

    /**
     * Finds all Contents given specified matches.
     *
     * @param string $propertyName
     * @param array $values
     * @return Content[]
     */
    public function findIn($propertyName, array $values)
    {
        $query = $this->createQuery();
        $query->matching($query->in($propertyName, $values));
        return $query->execute();
    }

    /**
     * Finds all Contents given specified matches.
     *
     * @param Matcher $matcher
     * @param Order $order The order
     * @param int $limit
     * @param int $offset
     * @return Content[]
     */
    public function findBy(Matcher $matcher, Order $order = null, $limit = null, $offset = null)
    {

        $query = $this->createQuery();

        $limit = (int)$limit; // make sure to cast

Consider using a different name than the parameter $limit. This often makes code more readable.

        if ($limit > 0) {
            $query->setLimit($limit);
        }

        if ($order) {
            $query->setOrderings($order->getOrderings());

            // Loops around the orderings adding if necessary a dummy condition
            // to make sure the relations can be resolved when transforming the query to plain SQL.
            foreach ($order->getOrderings() as $ordering => $direction) {
                if ($this->hasForeignRelationIn($ordering)) {
                    $relationalField = $this->getForeignRelationFrom($ordering);
                    $matcher->like($relationalField . '.uid', '');
                }
            }
        }

        if ($offset) {

The expression $offset of type integer|null is loosely compared to true; this is ambiguous if the integer can be zero. You might want to explicitly use !== null instead.

            $query->setOffset($offset);
        }

        $constraints = $this->computeConstraints($query, $matcher);

        if ($constraints) {
            $query->matching($constraints);
        }

        return $query->execute();
    }

    /**
     * Find one Content object given specified matches.
     *
     * @param Matcher $matcher
     * @return Content
     */
    public function findOneBy(Matcher $matcher)
    {

        $query = $this->createQuery();

        $constraints = $this->computeConstraints($query, $matcher);

        if ($constraints) {
            $query->matching($constraints);
        }

        $query->setLimit(1); // only take one!

        $resultSet = $query->execute();
        if ($resultSet) {

The expression $resultSet of type array is implicitly converted to a boolean; are you sure this is intended? If so, consider using ! empty($expr) instead to make it clear that you intend to check for an array without elements.

            $resultSet = current($resultSet);
        }
        return $resultSet;
    }

    /**
     * Count all Contents given specified matches.
     *
     * @param Matcher $matcher
     * @return int
     */
    public function countBy(Matcher $matcher)
    {

        $query = $this->createQuery();

        $constraints = $this->computeConstraints($query, $matcher);

        if ($constraints) {
            $query->matching($constraints);
        }

        return $query->count();
    }

    /**
     * Update a content with new information.
     *
     * @param Content $content
     * @param $language
     * @return bool
     */
    public function localize($content, $language)

This method seems to be duplicated in your project.

    {

        // Security check
        $this->getContentValidator()->validate($content);
        $this->getLanguageValidator()->validate($language);

        $dataType = $content->getDataType();
        $handler = $this->getDataHandlerFactory()->action(ProcessAction::LOCALIZE)->forType($dataType)->getDataHandler();

        $handlerResult = $handler->processLocalize($content, $language);
        $this->errorMessages = $handler->getErrorMessages();
        return $handlerResult;
    }

    /**
     * Update a content with new information.
     *
     * @param Content $content
     * @return bool
     */
    public function update($content)
    {

        // Security check.
        $this->getContentValidator()->validate($content);

        $dataType = $content->getDataType();
        $handler = $this->getDataHandlerFactory()->action(ProcessAction::UPDATE)->forType($dataType)->getDataHandler();

        $handlerResult = $handler->processUpdate($content);
        $this->errorMessages = $handler->getErrorMessages();
        return $handlerResult;
    }

    /**
     * Removes an object from this repository.
     *
     * @param Content $content
     * @return boolean
     */
    public function remove($content)
    {
        $dataType = $content->getDataType();
        $handler = $this->getDataHandlerFactory()->action(ProcessAction::REMOVE)->forType($dataType)->getDataHandler();

        $handlerResult = $handler->processRemove($content);
        $this->errorMessages = $handler->getErrorMessages();
        return $handlerResult;
    }

    /**
     * Move a content within this repository.
     * The $target corresponds to the pid to move the records to.
     * It can also be a negative value in case of sorting. The negative value would be the uid of its predecessor.
     *
     * @param Content $content
     * @param string $target
     * @return bool
     */
    public function move($content, $target)

This method seems to be duplicated in your project.

    {

        // Security check.
        $this->getContentValidator()->validate($content);

        $dataType = $content->getDataType();
        $handler = $this->getDataHandlerFactory()->action(ProcessAction::MOVE)->forType($dataType)->getDataHandler();

        $handlerResult = $handler->processMove($content, $target);
        $this->errorMessages = $handler->getErrorMessages();
        return $handlerResult;
    }

    /**
     * Copy a content within this repository.
     *
     * @param Content $content
     * @return bool
     */
    public function copy($content, $target)

This method seems to be duplicated in your project.

    {

        // Security check.
        $this->getContentValidator()->validate($content);

        $dataType = $content->getDataType();
        $handler = $this->getDataHandlerFactory()->action(ProcessAction::COPY)->forType($dataType)->getDataHandler();

        $handlerResult = $handler->processCopy($content, $target);
        $this->errorMessages = $handler->getErrorMessages();
        return $handlerResult;
    }

    /**
     * Adds an object to this repository.
     *
     * @param object $object The object to add
     * @throws \BadMethodCallException
     * @return void
     * @api
     */
    public function add($object)
    {
        throw new \BadMethodCallException('Repository does not support the add() method.', 1375805599);
    }

    /**
     * Returns the total number objects of this repository.
     *
     * @return integer The object count
     * @api
     */
    public function countAll()
    {
        $query = $this->createQuery();
        return $query->count();
    }

    /**
     * Removes all objects of this repository as if remove() was called for
     * all of them.
     *
     * @return void
     * @api
     */
    public function removeAll()
    {
        // TODO: Implement removeAll() method.
    }

    /**
     * Finds an object matching the given identifier.
     *
     * @param mixed $identifier The identifier of the object to find
     * @return Content|null
     * @api
     */
    public function findByIdentifier($identifier)
    {
        $query = $this->createQuery();

        $result = $query->matching($query->equals('uid', $identifier))
            ->execute();

        if (is_array($result)) {
            $result = current($result);
        }

        return $result;
    }

    /**
     * Dispatches magic methods (findBy[Property]())
     *
     * @param string $methodName The name of the magic method
     * @param string $arguments The arguments of the magic method
     * @throws UnsupportedMethodException
     * @return mixed
     * @api
     */
    public function __call($methodName, $arguments)
    {
        if (substr($methodName, 0, 6) === 'findBy' && strlen($methodName) > 7) {
            $propertyName = strtolower(substr(substr($methodName, 6), 0, 1)) . substr(substr($methodName, 6), 1);
            $result = $this->processMagicCall($propertyName, $arguments[0]);
        } elseif (substr($methodName, 0, 9) === 'findOneBy' && strlen($methodName) > 10) {

This code seems to be duplicated across your project.

            $propertyName = strtolower(substr(substr($methodName, 9), 0, 1)) . substr(substr($methodName, 9), 1);
            $result = $this->processMagicCall($propertyName, $arguments[0], 'one');
        } elseif (substr($methodName, 0, 7) === 'countBy' && strlen($methodName) > 8) {
            $propertyName = strtolower(substr(substr($methodName, 7), 0, 1)) . substr(substr($methodName, 7), 1);
            $result = $this->processMagicCall($propertyName, $arguments[0], 'count');
        } else {
            throw new UnsupportedMethodException('The method "' . $methodName . '" is not supported by the repository.', 1360838010);
        }
        return $result;
    }

    /**
     * Returns a query for objects of this repository
     *
     * @return Query
     * @api
     */
    public function createQuery()
    {
        /** @var Query $query */
        $query = $this->getObjectManager()->get(Query::class, $this->dataType);
        $query->setSourceFieldName($this->sourceFieldName);

        if ($this->defaultQuerySettings) {
            $query->setQuerySettings($this->defaultQuerySettings);
        } else {

            // Initialize and pass the query settings at this level.
            /** @var QuerySettings $querySettings */
            $querySettings = $this->getObjectManager()->get(QuerySettings::class);

            // Default choice for the BE.
            if ($this->isBackendMode()) {
                $querySettings->setIgnoreEnableFields(true);
            }

            $query->setQuerySettings($querySettings);
        }

        return $query;
    }

    /**
     * Sets the property names to order the result by per default.
     * Expected like this:
     * array(
     * 'foo' => \TYPO3\CMS\Extbase\Persistence\QueryInterface::ORDER_ASCENDING,
     * 'bar' => \TYPO3\CMS\Extbase\Persistence\QueryInterface::ORDER_DESCENDING
     * )
     *
     * @param array $defaultOrderings The property names to order by
     * @throws \BadMethodCallException
     * @return void
     * @api
     */
    public function setDefaultOrderings(array $defaultOrderings)
    {
        throw new \BadMethodCallException('Repository does not support the setDefaultOrderings() method.', 1375805598);
    }

    /**
     * Sets the default query settings to be used in this repository
     *
     * @param QuerySettingsInterface $defaultQuerySettings The query settings to be used by default
     * @throws \BadMethodCallException
     * @return void
     * @api
     */
    public function setDefaultQuerySettings(QuerySettingsInterface $defaultQuerySettings)
    {
        $this->defaultQuerySettings = $defaultQuerySettings;
    }

    /**
     * @return void
     */
    public function resetDefaultQuerySettings()
    {
        $this->defaultQuerySettings = null;
    }


    /**
     * @return array
     */
    public function getErrorMessages()
    {
        return $this->errorMessages;
    }

    /**
     * @param string $sourceFieldName
     * @return $this
     */
    public function setSourceFieldName($sourceFieldName)
    {
        $this->sourceFieldName = $sourceFieldName;
        return $this;
    }

    /**
     * @return string
     */
    public function getDataType()
    {
        return $this->dataType;
    }

    /**
     * Tell whether the order has a foreign table in its expression, e.g. "metadata.title".
     *
     * @param string $ordering
     * @return bool
     */
    protected function hasForeignRelationIn($ordering)
    {
        return strpos($ordering, '.') !== false;
    }

    /**
     * Extract the foreign relation of the ordering "metadata.title" -> "metadata"
     *
     * @param string $ordering
     * @return string
     */
    protected function getForeignRelationFrom($ordering)
    {
        $parts = explode('.', $ordering);
        return $parts[0];
    }

    /**
     * Get the constraints
     *
     * @param Query $query
     * @param Matcher $matcher
     * @return ConstraintInterface|null
     */
    protected function computeConstraints(Query $query, Matcher $matcher)
    {

        $constraints = null;

        $collectedConstraints = array();

        // Search term
        $constraint = $this->computeSearchTermConstraint($query, $matcher);
        if ($constraint) {
            $collectedConstraints[] = $constraint;
        }

        foreach ($matcher->getSupportedOperators() as $operator) {
            $constraint = $this->computeConstraint($query, $matcher, $operator);

Are you sure the assignment to $constraint is correct as $this->computeConstraint($query, $matcher, $operator) (which targets Fab\Vidi\Domain\Repository\ContentRepository::computeConstraint()) seems to always return null.

            if ($constraint) {
                $collectedConstraints[] = $constraint;
            }
        }

        if (count($collectedConstraints) > 1) {
            $logical = $matcher->getDefaultLogicalSeparator();
            $constraints = $query->$logical($collectedConstraints);
        } elseif (!empty($collectedConstraints)) {

            // true means there is one constraint only and should become the result
            $constraints = current($collectedConstraints);
        }

        // Trigger signal for post processing the computed constraints object.
        $constraints = $this->emitPostProcessConstraintsSignal($query, $constraints);

        return $constraints;
    }

    /**
     * Computes the search constraint and returns it.
     *
     * @param Query $query
     * @param Matcher $matcher
     * @return ConstraintInterface|null
     */
    protected function computeSearchTermConstraint(Query $query, Matcher $matcher)
    {

        $result = null;

        // Search term case
        if ($matcher->getSearchTerm()) {

            $fields = GeneralUtility::trimExplode(',', Tca::table($this->dataType)->getSearchFields(), true);

            $constraints = array();
            $likeClause = sprintf('%%%s%%', $matcher->getSearchTerm());
            foreach ($fields as $fieldNameAndPath) {
                if ($this->isSuitableForLike($fieldNameAndPath, $matcher->getSearchTerm())) {

                    $dataType = $this->getFieldPathResolver()->getDataType($fieldNameAndPath, $this->dataType);
                    $fieldName = $this->getFieldPathResolver()->stripFieldPath($fieldNameAndPath, $this->dataType);

                    if (Tca::table($dataType)->hasField($fieldName) && Tca::table($dataType)->field($fieldName)->hasRelation()) {
                        $foreignTable = Tca::table($dataType)->field($fieldName)->getForeignTable();
                        $fieldNameAndPath = $fieldNameAndPath . '.' . Tca::table($foreignTable)->getLabelField();
                    }
                    $constraints[] = $query->like($fieldNameAndPath, $likeClause);
                }
            }
            $logical = $matcher->getLogicalSeparatorForSearchTerm();
            $result = $query->$logical($constraints);
        }

        return $result;
    }

    /**
     * It does not make sense to have a "like" in presence of numerical field, e.g "uid".
     * Tell whether the given value makes sense for a "like" clause.
     *
     * @param string $fieldNameAndPath
     * @param string $value
     * @return bool
     */
    protected function isSuitableForLike($fieldNameAndPath, $value)
    {
        $isSuitable = true;

        // true means it is a string
        if (!MathUtility::canBeInterpretedAsInteger($value)) {

            $dataType = $this->getFieldPathResolver()->getDataType($fieldNameAndPath, $this->dataType);
            $fieldName = $this->getFieldPathResolver()->stripFieldPath($fieldNameAndPath, $this->dataType);

            if (Tca::table($dataType)->field($fieldName)->isNumerical()
                && !Tca::table($dataType)->field($fieldName)->hasRelation()
            ) {
                $isSuitable = false;
            }
        }

        return $isSuitable;
    }

    /**
     * Computes the constraint for matches and returns it.
     *
     * @param Query $query
     * @param Matcher $matcher
     * @param string $operator
     * @return ConstraintInterface|null
     */
    protected function computeConstraint(Query $query, Matcher $matcher, $operator)
    {
        $result = null;

        $operatorName = ucfirst($operator);
        $getCriteria = sprintf('get%s', $operatorName);
        $criteria = $matcher->$getCriteria();

        if (!empty($criteria)) {
            $constraints = array();

            foreach ($criteria as $criterion) {

                $fieldNameAndPath = $criterion['fieldNameAndPath'];
                $operand = $criterion['operand'];

                // Compute a few variables...
                // $dataType is generally equals to $this->dataType but not always... if fieldName is a path.
                $dataType = $this->getFieldPathResolver()->getDataType($fieldNameAndPath, $this->dataType);
                $fieldName = $this->getFieldPathResolver()->stripFieldPath($fieldNameAndPath, $this->dataType);
                $fieldPath = $this->getFieldPathResolver()->stripFieldName($fieldNameAndPath, $this->dataType);

                if (Tca::table($dataType)->field($fieldName)->hasRelation()) {
                    if (MathUtility::canBeInterpretedAsInteger($operand)) {
                        $fieldNameAndPath = $fieldName . '.uid';
                    } else {
                        $foreignTableName = Tca::table($dataType)->field($fieldName)->getForeignTable();
                        $foreignTable = Tca::table($foreignTableName);
                        $fieldNameAndPath = $fieldName . '.' . $foreignTable->getLabelField();
                    }

                    // If different means we should restore the prepended path segment for proper SQL parser.
                    // This is true for a composite field, e.g items.sys_file_metadata for categories.
                    if ($fieldName !== $fieldPath) {
                        $fieldNameAndPath = $fieldPath . '.' . $fieldNameAndPath;
                    }
                }

                $constraints[] = $query->$operator($fieldNameAndPath, $criterion['operand']);
            }

            $getLogicalSeparator = sprintf('getLogicalSeparatorFor%s', $operatorName);
            $logical = $matcher->$getLogicalSeparator();
            $result = $query->$logical($constraints);
        }

        return $result;
    }

    /**
     * @return DataHandler
     */
    protected function getDataHandler()
    {
        if (!$this->dataHandler) {
            $this->dataHandler = GeneralUtility::makeInstance(DataHandler::class);
        }
        return $this->dataHandler;
    }

    /**
     * Handle the magic call by properly creating a Query object and returning its result.
     *
     * @param string $propertyName
     * @param string $value
     * @param string $flag
     * @return array
     */
    protected function processMagicCall($propertyName, $value, $flag = '')
    {

        $fieldName = Property::name($propertyName)->of($this->dataType)->toFieldName();

        /** @var $matcher Matcher */
        $matcher = GeneralUtility::makeInstance(Matcher::class, array(), $this->getDataType());

        $table = Tca::table($this->dataType);
        if ($table->field($fieldName)->isGroup()) {

            $valueParts = explode('.', $value, 2);
            $fieldName = $fieldName . '.' . $valueParts[0];
            $value = $valueParts[1];

Consider using a different name than the parameter $value. This often makes code more readable.

        }

        $matcher->equals($fieldName, $value);

        if ($flag == 'count') {
            $result = $this->countBy($matcher);
        } else {
            $result = $this->findBy($matcher);
        }
        return $flag == 'one' && !empty($result) ? reset($result) : $result;
    }

    /**
     * @return DataHandlerFactory
     */
    protected function getDataHandlerFactory()
    {
        return GeneralUtility::makeInstance(DataHandlerFactory::class);
    }

    /**
     * Returns whether the current mode is Backend
     *
     * @return bool
     */
    protected function isBackendMode()
    {
        return TYPO3_MODE == 'BE';
    }

    /**
     * @return FieldPathResolver
     */
    protected function getFieldPathResolver()
    {
        return GeneralUtility::makeInstance(FieldPathResolver::class);
    }

    /**
     * @return ObjectManager
     */
    protected function getObjectManager()
    {
        return GeneralUtility::makeInstance(ObjectManager::class);
    }

    /**
     * @return ContentValidator
     */
    protected function getContentValidator()
    {
        return GeneralUtility::makeInstance(ContentValidator::class);
    }

    /**
     * @return LanguageValidator
     */
    protected function getLanguageValidator()
    {
        return GeneralUtility::makeInstance(LanguageValidator::class);
    }

    /**
     * Signal that is called for post-processing the computed constraints object.
     *
     * @param Query $query
     * @param ConstraintInterface|null $constraints
     * @return ConstraintInterface|null $constraints
     * @signal
     */
    protected function emitPostProcessConstraintsSignal(Query $query, $constraints)
    {
        $result = $this->getSignalSlotDispatcher()->dispatch(
            self::class,
            'postProcessConstraintsObject',
            array(
                $query,
                $constraints
            )
        );

        return $result[1];
    }

    /**
     * @return \TYPO3\CMS\Extbase\SignalSlot\Dispatcher
     */
    protected function getSignalSlotDispatcher()
    {
        return $this->getObjectManager()->get(\TYPO3\CMS\Extbase\SignalSlot\Dispatcher::class);
    }

}