HavingGroupBuilder - Code Metrics - Inspection of "Add raw functions support and improve builders" - rambler-digital-solutions/hydrogen - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( b7ef6a...58a002 )

by Kirill

created 2018-09-05 02:03 UTC

HavingGroupBuilder A

↳ Parent: Project

Complexity

Total Complexity

Size/Duplication

Total Lines	45
Duplicated Lines	0 %

Coupling/Cohesion

Components	0
Dependencies	6

Test Coverage

Coverage

Importance

Changes

Metric	Value
wmc	5
lcom	0
cbo	6
dl	0
loc	45
ccs	0
cts	18
cp	0
rs	10
c	0
b	0
f	0

2 Methods

Rating	Name	Duplication	Size	Complexity
A	apply()	0	10	3
A	applyWhere()	0	11	2

<?php
/**
 * This file is part of Hydrogen package.
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
declare(strict_types=1);

namespace RDS\Hydrogen\Processor\DatabaseProcessor;

use Doctrine\ORM\Query\Expr\Andx;
use Doctrine\ORM\QueryBuilder;
use RDS\Hydrogen\Criteria\Criterion;
use RDS\Hydrogen\Criteria\CriterionInterface;
use RDS\Hydrogen\Criteria\WhereGroup;
use RDS\Hydrogen\Criteria\Having;
use RDS\Hydrogen\Criteria\Where;
use RDS\Hydrogen\Processor\DatabaseProcessor\Common\Expression;

/**
 * Class HavingGroupBuilder
 */
class HavingGroupBuilder extends GroupBuilder
{
    /**
     * @var string[]|Criterion[]
     */
    protected const ALLOWED_INNER_TYPES = [
        Where::class      => 'applyWhere',
        Having::class     => 'applyWhere',
        WhereGroup::class => 'applyGroup',
    ];

    /**
     * @param QueryBuilder $builder
     * @param CriterionInterface|WhereGroup $group
     * @return iterable|null
     */
    public function apply($builder, CriterionInterface $group): ?iterable
    {
        $expression = $builder->expr()->andX();

        foreach ($this->getInnerSelections($group) as $criterion => $fn) {

            yield from $fn($builder, $expression, $criterion);
        }

        return $group->isAnd() ? $builder->andHaving($expression) : $builder->orHaving($expression);
interface User
{
    /** @return string */
    public function getPassword();
}

class MyUser implements User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
    }

    /**
     * @param QueryBuilder $builder
     * @param Andx $context
     * @param Where $where
     * @return \Generator
     */
    final protected function applyWhere(QueryBuilder $builder, Andx $context, Where $where): \Generator
    {
        $expression = new Expression($builder, $where->getOperator(), $where->getValue());
        yield from $result = $expression->create($where->getField());

        if ($where->isAnd()) {
            $context->add($result->getReturn());
        } else {
            $builder->orHaving($result->getReturn());
        }
    }
}


1			<?php
2			/**
3			* This file is part of Hydrogen package.
4			*
5			* For the full copyright and license information, please view the LICENSE
6			* file that was distributed with this source code.
7			*/
8			declare(strict_types=1);
9
10			namespace RDS\Hydrogen\Processor\DatabaseProcessor;
11
12			use Doctrine\ORM\Query\Expr\Andx;
13			use Doctrine\ORM\QueryBuilder;
14			use RDS\Hydrogen\Criteria\Criterion;
15			use RDS\Hydrogen\Criteria\CriterionInterface;
16			use RDS\Hydrogen\Criteria\WhereGroup;
17			use RDS\Hydrogen\Criteria\Having;
18			use RDS\Hydrogen\Criteria\Where;
19			use RDS\Hydrogen\Processor\DatabaseProcessor\Common\Expression;
20
21			/**
22			* Class HavingGroupBuilder
23			*/
24			class HavingGroupBuilder extends GroupBuilder
25			{
26			/**
27			* @var string[]\|Criterion[]
28			*/
29			protected const ALLOWED_INNER_TYPES = [
30			Where::class => 'applyWhere',
31			Having::class => 'applyWhere',
32			WhereGroup::class => 'applyGroup',
33			];
34
35			/**
36			* @param QueryBuilder $builder
37			* @param CriterionInterface\|WhereGroup $group
38			* @return iterable\|null
39			*/
40			public function apply($builder, CriterionInterface $group): ?iterable
41			{
42			$expression = $builder->expr()->andX();
43
44			foreach ($this->getInnerSelections($group) as $criterion => $fn) {
			0 ignored issues – show Compatibility introduced 2018-09-05 02:06 UTC by Report Bug Copy Issue Report `$group` of type `object<RDS\Hydrogen\Criteria\CriterionInterface>` is not a sub-type of `object<RDS\Hydrogen\Criteria\WhereGroup>`. It seems like you assume a concrete implementation of the interface `RDS\Hydrogen\Criteria\CriterionInterface` to be always present. This check looks for parameters that are defined as one type in their type hint or doc comment but seem to be used as a narrower type, i.e an implementation of an interface or a subclass. Consider changing the type of the parameter or doing an instanceof check before assuming your parameter is of the expected type. Loading history...
45			yield from $fn($builder, $expression, $criterion);
46			}
47
48			return $group->isAnd() ? $builder->andHaving($expression) : $builder->orHaving($expression);
			0 ignored issues – show Bug introduced 2018-09-05 02:06 UTC by Report Bug Copy Issue Report It seems like you code against a concrete implementation and not the interface `RDS\Hydrogen\Criteria\CriterionInterface` as the method `isAnd()` does only exist in the following implementations of said interface: `RDS\Hydrogen\Criteria\Having`, `RDS\Hydrogen\Criteria\HavingGroup`, `RDS\Hydrogen\Criteria\Where`, `RDS\Hydrogen\Criteria\WhereGroup`. Let’s take a look at an example: interface User { /** @return string / public function getPassword(); } class MyUser implements User { public function getPassword() { // return something } public function getDisplayName() { // return some name. } } class AuthSystem { public function authenticate(User $user) { $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName())); // do something. } } In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different implementation of User which does not have a getDisplayName() method, the code will break. Available Fixes Change the type-hint for the parameter: class AuthSystem { public function authenticate(MyUser $user) { / ... / } } Add an additional type-check: class AuthSystem { public function authenticate(User $user) { if ($user instanceof MyUser) { $this->logger->info(/* ... /); } // or alternatively if ( ! $user instanceof MyUser) { throw new \LogicException( '$user must be an instance of MyUser, ' .'other instances are not supported.' ); } } } Note:* PHP Analyzer uses reverse abstract interpretation to narrow down the types inside the if block in such a case. Add the method to the interface: interface User { /** @return string / public function getPassword(); /* @return string / public function getDisplayName(); } Loading history... Bug Best Practice introduced 2018-09-05 02:06 UTC by Report Bug Copy Issue Report The return type of `return $group->isAnd() ?...>orHaving($expression);` (`Doctrine\ORM\QueryBuilder`) is incompatible with the return type declared by the interface `RDS\Hydrogen\Processor\BuilderInterface::apply` of type `RDS\Hydrogen\Processor\iterable\|null`. If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design. Let’s take a look at an example: class Author { private $name; public function __construct($name) { $this->name = $name; } public function getName() { return $this->name; } } abstract class Post { public function getAuthor() { return 'Johannes'; } } class BlogPost extends Post { public function getAuthor() { return new Author('Johannes'); } } class ForumPost extends Post { / ... */ } function my_function(Post $post) { echo strtoupper($post->getAuthor()); } Our function `my_function` expects a `Post` object, and outputs the author of the post. The base class `Post` returns a simple string and outputting a simple string will work just fine. However, the child class `BlogPost` which is a sub-type of `Post` instead decided to return an `object`, and is therefore violating the SOLID principles. If a `BlogPost` were passed to `my_function`, PHP would not complain, but ultimately fail when executing the `strtoupper` call in its body. Loading history...
49			}
50
51			/**
52			* @param QueryBuilder $builder
53			* @param Andx $context
54			* @param Where $where
55			* @return \Generator
56			*/
57			final protected function applyWhere(QueryBuilder $builder, Andx $context, Where $where): \Generator
58			{
59			$expression = new Expression($builder, $where->getOperator(), $where->getValue());
60			yield from $result = $expression->create($where->getField());
61
62			if ($where->isAnd()) {
63			$context->add($result->getReturn());
64			} else {
65			$builder->orHaving($result->getReturn());
66			}
67			}
68			}
69

rambler-digital-solutions / hydrogen

Push — master ( b7ef6a...58a002 )

HavingGroupBuilder A

Complexity

Size/Duplication

Coupling/Cohesion

Test Coverage

Importance

2 Methods

Available Fixes

Duplication Side-by-Side

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