Builder::getFromAlias() - Code Metrics - netdudes/DataSourceryBundle - Measure and Improve Code Quality continuously with Scrutinizer

Builder::getFromAlias() A
last analyzed 2017-06-12 15:46 UTC

↳ Parent: Builder

Complexity

Conditions	2
Paths	2

Size

Total Lines	8
Code Lines	4

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	8
c	0
b	0
f	0
rs	9.4285
cc	2
eloc	4
nc	2
nop	0

<?php
namespace Netdudes\DataSourceryBundle\DataSource\Driver\Doctrine\QueryBuilder;

use Doctrine\ORM\EntityManager;
use Doctrine\ORM\QueryBuilder;
use Netdudes\DataSourceryBundle\DataSource\DataSourceInterface;
use Netdudes\DataSourceryBundle\DataSource\Driver\Doctrine\DoctrineDriver;
use Netdudes\DataSourceryBundle\DataSource\Driver\Doctrine\Events\GenerateJoinsEvent;
use Netdudes\DataSourceryBundle\DataSource\Driver\Doctrine\Events\GenerateSelectsEvent;
use Netdudes\DataSourceryBundle\DataSource\Driver\Doctrine\Events\PostGenerateQueryBuilderEvent;
use Netdudes\DataSourceryBundle\Query\Query;
use Netdudes\DataSourceryBundle\Query\SearchTextFieldHandler;
use Netdudes\DataSourceryBundle\Query\SearchTextFilterConditionTransformer;

class Builder
{
    /**
     * @var Filterer
     */
    protected $filterer;

    /**
     * @var Sorter
     */
    protected $sorter;

    /**
     * @var Paginator
     */
    protected $paginator;

    /**
     * @var string
     */
    protected $fromAlias;

    /**
     * @var array
     */
    protected $joins;

    /**
     * @var array
     */
    protected $selectFieldsMap = [];

    /**
     * @var RequiredFieldsExtractor
     */
    protected $requiredFieldsExtractor;

    /**
     * @var JoinGenerator
     */
    protected $joinGenerator;

    /**
     * @var SelectGenerator
     */
    protected $selectGenerator;

    /**
     * @var SearchTextFieldHandler
     */
    protected $searchTextFieldHandler;

    /**
     * @var EntityManager
     */
    private $entityManager;

    /**
     * @var DataSourceInterface
     */
    private $dataSource;

    /**
     * @param DataSourceInterface $dataSource
     * @param EntityManager       $entityManager
     */
    public function __construct(DataSourceInterface $dataSource, EntityManager $entityManager)
function someFunction(ManagerRegistry $registry) {
    $em = $registry->getManager();
    $em->getConnection()->beginTransaction();
    try {
        // Do something.
        $em->getConnection()->commit();
    } catch (\Exception $ex) {
        $em->getConnection()->rollback();
        $em->close();

        throw $ex;
    }
}
    {
        $this->dataSource = $dataSource;
        $this->entityManager = $entityManager;

        $fields = $dataSource->getFields();
        $transformers = $dataSource->getTransformers();

        $this->requiredFieldsExtractor = new RequiredFieldsExtractor($fields, $transformers);
        $this->joinGenerator = new JoinGenerator($fields, $this->getFromAlias(), $this->requiredFieldsExtractor);
        $this->selectGenerator = new SelectGenerator($fields, $this->getFromAlias(), $this->joinGenerator, $this->requiredFieldsExtractor);
        $this->filterer = new Filterer();
        $this->searchTextFieldHandler = new SearchTextFieldHandler(new SearchTextFilterConditionTransformer());
        $this->sorter = new Sorter();
        $this->paginator = new Paginator();
    }

    /**
     * Gets the fully generated query builder. Will autogenerate select and
     * join statements as needed.
     *
     * This function is cached, and will only be generated once per execution.
     *
     * @param Query $query
     *
     * @return QueryBuilder
     */
    public function buildQueryBuilder(Query $query, $entityClass)
    {
        $this->searchTextFieldHandler->handle($query->getFilter(), $this->dataSource->getFields());

        $queryBuilder = $this->entityManager->createQueryBuilder();
        $queryBuilder->from($entityClass, $this->getFromAlias());

        $select = $this->selectGenerator->generate($query);
        $event = new GenerateSelectsEvent($select, $this->getFromAlias());
/** @return stdClass|null */
function mayReturnNull() { }

function doesNotAcceptNull(stdClass $x) { }

// With potential error.
function withoutCheck() {
    $x = mayReturnNull();
    doesNotAcceptNull($x); // Potential error here.
}

// Safe - Alternative 1
function withCheck1() {
    $x = mayReturnNull();
    if ( ! $x instanceof stdClass) {
        throw new \LogicException('$x must be defined.');
    }
    doesNotAcceptNull($x);
}

// Safe - Alternative 2
function withCheck2() {
    $x = mayReturnNull();
    if ($x instanceof stdClass) {
        doesNotAcceptNull($x);
    }
}
        $this->dataSource->getEventDispatcher()->dispatch(DoctrineDriver::EVENT_GENERATE_SELECTS, $event);
        $select = $event->select;
        $queryBuilder->add('select', $select);

        $joins = $this->joinGenerator->generate($query);
        $event = new GenerateJoinsEvent($this->getFromAlias(), $joins);
        $this->dataSource->getEventDispatcher()->dispatch(DoctrineDriver::EVENT_GENERATE_JOINS, $event);
        $joins = $event->joins;
        foreach ($joins as $join) {
            $queryBuilder
                ->leftJoin($join->getJoin(), $join->getAlias(), $join->getConditionType(), $join->getCondition(), $join->getIndexBy());
        }

        $this->filterer->filter($queryBuilder, $query->getFilter(), $this->selectGenerator->getUniqueNameToSelectFieldMap($query));

        $this->sorter->sort($queryBuilder, $query->getSort(), $this->selectGenerator->getUniqueNameToSelectFieldMap($query));

        $this->paginator->paginate($queryBuilder, $query->getPagination(), $this->dataSource->getFields());


        $this->dataSource->getEventDispatcher()->dispatch(DoctrineDriver::EVENT_POST_GENERATE_QUERY_BUILDER, new PostGenerateQueryBuilderEvent($queryBuilder, $this->getFromAlias()));

        return $queryBuilder;
    }

    /**
     * Gets the FROM alias, an internal name given to the class in the FROM part of the DQL.
     *
     * This name is generated once, and it's unique per execution of the data source.
     *
     * @return string
     */
    protected function getFromAlias()
    {
        if (is_null($this->fromAlias)) {
            $this->fromAlias = uniqid('ENTITY_');
        }

        return $this->fromAlias;
    }
}


1			<?php
2			namespace Netdudes\DataSourceryBundle\DataSource\Driver\Doctrine\QueryBuilder;
3
4			use Doctrine\ORM\EntityManager;
5			use Doctrine\ORM\QueryBuilder;
6			use Netdudes\DataSourceryBundle\DataSource\DataSourceInterface;
7			use Netdudes\DataSourceryBundle\DataSource\Driver\Doctrine\DoctrineDriver;
8			use Netdudes\DataSourceryBundle\DataSource\Driver\Doctrine\Events\GenerateJoinsEvent;
9			use Netdudes\DataSourceryBundle\DataSource\Driver\Doctrine\Events\GenerateSelectsEvent;
10			use Netdudes\DataSourceryBundle\DataSource\Driver\Doctrine\Events\PostGenerateQueryBuilderEvent;
11			use Netdudes\DataSourceryBundle\Query\Query;
12			use Netdudes\DataSourceryBundle\Query\SearchTextFieldHandler;
13			use Netdudes\DataSourceryBundle\Query\SearchTextFilterConditionTransformer;
14
15			class Builder
16			{
17			/**
18			* @var Filterer
19			*/
20			protected $filterer;
21
22			/**
23			* @var Sorter
24			*/
25			protected $sorter;
26
27			/**
28			* @var Paginator
29			*/
30			protected $paginator;
31
32			/**
33			* @var string
34			*/
35			protected $fromAlias;
36
37			/**
38			* @var array
39			*/
40			protected $joins;
41
42			/**
43			* @var array
44			*/
45			protected $selectFieldsMap = [];
46
47			/**
48			* @var RequiredFieldsExtractor
49			*/
50			protected $requiredFieldsExtractor;
51
52			/**
53			* @var JoinGenerator
54			*/
55			protected $joinGenerator;
56
57			/**
58			* @var SelectGenerator
59			*/
60			protected $selectGenerator;
61
62			/**
63			* @var SearchTextFieldHandler
64			*/
65			protected $searchTextFieldHandler;
66
67			/**
68			* @var EntityManager
69			*/
70			private $entityManager;
71
72			/**
73			* @var DataSourceInterface
74			*/
75			private $dataSource;
76
77			/**
78			* @param DataSourceInterface $dataSource
79			* @param EntityManager $entityManager
80			*/
81			public function __construct(DataSourceInterface $dataSource, EntityManager $entityManager)
			0 ignored issues – show Bug introduced 2015-12-10 11:44 UTC by Report Bug Copy Issue Report You have injected the EntityManager via parameter `$entityManager`. This is generally not recommended as it might get closed and become unusable. Instead, it is recommended to inject the ManagerRegistry and retrieve the EntityManager via `getManager()` each time you need it. The `EntityManager` might become unusable for example if a transaction is rolled back and it gets closed. Let’s assume that somewhere in your application, or in a third-party library, there is code such as the following: function someFunction(ManagerRegistry $registry) { $em = $registry->getManager(); $em->getConnection()->beginTransaction(); try { // Do something. $em->getConnection()->commit(); } catch (\Exception $ex) { $em->getConnection()->rollback(); $em->close(); throw $ex; } } If that code throws an exception and the `EntityManager` is closed. Any other code which depends on the same instance of the `EntityManager` during this request will fail. On the other hand, if you instead inject the `ManagerRegistry`, the `getManager()` method guarantees that you will always get a usable manager instance. Loading history...
82			{
83			$this->dataSource = $dataSource;
84			$this->entityManager = $entityManager;
85
86			$fields = $dataSource->getFields();
87			$transformers = $dataSource->getTransformers();
88
89			$this->requiredFieldsExtractor = new RequiredFieldsExtractor($fields, $transformers);
90			$this->joinGenerator = new JoinGenerator($fields, $this->getFromAlias(), $this->requiredFieldsExtractor);
91			$this->selectGenerator = new SelectGenerator($fields, $this->getFromAlias(), $this->joinGenerator, $this->requiredFieldsExtractor);
92			$this->filterer = new Filterer();
93			$this->searchTextFieldHandler = new SearchTextFieldHandler(new SearchTextFilterConditionTransformer());
94			$this->sorter = new Sorter();
95			$this->paginator = new Paginator();
96			}
97
98			/**
99			* Gets the fully generated query builder. Will autogenerate select and
100			* join statements as needed.
101			*
102			* This function is cached, and will only be generated once per execution.
103			*
104			* @param Query $query
105			*
106			* @return QueryBuilder
107			*/
108			public function buildQueryBuilder(Query $query, $entityClass)
109			{
110			$this->searchTextFieldHandler->handle($query->getFilter(), $this->dataSource->getFields());
111
112			$queryBuilder = $this->entityManager->createQueryBuilder();
113			$queryBuilder->from($entityClass, $this->getFromAlias());
114
115			$select = $this->selectGenerator->generate($query);
116			$event = new GenerateSelectsEvent($select, $this->getFromAlias());
			0 ignored issues – show Bug introduced 2016-08-02 14:52 UTC by Report Bug Copy Issue Report It seems like `$select` defined by `$this->selectGenerator->generate($query)` on line `115` can be `null`; however, `Netdudes\DataSourceryBun...ctsEvent::__construct()` does not accept `null`, maybe add an additional type check? Unless you are absolutely sure that the expression can never be null because of other conditions, we strongly recommend to add an additional type check to your code: /** @return stdClass\|null */ function mayReturnNull() { } function doesNotAcceptNull(stdClass $x) { } // With potential error. function withoutCheck() { $x = mayReturnNull(); doesNotAcceptNull($x); // Potential error here. } // Safe - Alternative 1 function withCheck1() { $x = mayReturnNull(); if ( ! $x instanceof stdClass) { throw new \LogicException('$x must be defined.'); } doesNotAcceptNull($x); } // Safe - Alternative 2 function withCheck2() { $x = mayReturnNull(); if ($x instanceof stdClass) { doesNotAcceptNull($x); } } Loading history...
117			$this->dataSource->getEventDispatcher()->dispatch(DoctrineDriver::EVENT_GENERATE_SELECTS, $event);
118			$select = $event->select;
119			$queryBuilder->add('select', $select);
120
121			$joins = $this->joinGenerator->generate($query);
122			$event = new GenerateJoinsEvent($this->getFromAlias(), $joins);
123			$this->dataSource->getEventDispatcher()->dispatch(DoctrineDriver::EVENT_GENERATE_JOINS, $event);
124			$joins = $event->joins;
125			foreach ($joins as $join) {
126			$queryBuilder
127			->leftJoin($join->getJoin(), $join->getAlias(), $join->getConditionType(), $join->getCondition(), $join->getIndexBy());
128			}
129
130			$this->filterer->filter($queryBuilder, $query->getFilter(), $this->selectGenerator->getUniqueNameToSelectFieldMap($query));
131
132			$this->sorter->sort($queryBuilder, $query->getSort(), $this->selectGenerator->getUniqueNameToSelectFieldMap($query));
133
134			$this->paginator->paginate($queryBuilder, $query->getPagination(), $this->dataSource->getFields());
			0 ignored issues – show Unused Code introduced 2015-12-10 11:44 UTC by Report Bug Copy Issue Report The call to `Paginator::paginate()` has too many arguments starting with `$this->dataSource->getFields()`. This check compares calls to functions or methods with their respective definitions. If the call has more arguments than are defined, it raises an issue. If a function is defined several times with a different number of parameters, the check may pick up the wrong definition and report false positives. One codebase where this has been known to happen is Wordpress. In this case you can add the `@ignore` PhpDoc annotation to the duplicate definition and it will be ignored. Loading history...
135
136			$this->dataSource->getEventDispatcher()->dispatch(DoctrineDriver::EVENT_POST_GENERATE_QUERY_BUILDER, new PostGenerateQueryBuilderEvent($queryBuilder, $this->getFromAlias()));
137
138			return $queryBuilder;
139			}
140
141			/**
142			* Gets the FROM alias, an internal name given to the class in the FROM part of the DQL.
143			*
144			* This name is generated once, and it's unique per execution of the data source.
145			*
146			* @return string
147			*/
148			protected function getFromAlias()
149			{
150			if (is_null($this->fromAlias)) {
151			$this->fromAlias = uniqid('ENTITY_');
152			}
153
154			return $this->fromAlias;
155			}
156			}
157

netdudes / DataSourceryBundle

Builder::getFromAlias() A last analyzed 2017-06-12 15:46 UTC

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Builder::getFromAlias() A
last analyzed 2017-06-12 15:46 UTC