Completed
Push — bulk_load_languages ( d98d09 )
by André
23:21
created

Handler::loadList()   A

Complexity

Conditions 1
Paths 1

Size

Total Lines 7

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
cc 1
nc 1
nop 1
dl 0
loc 7
rs 10
c 0
b 0
f 0
1
<?php
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/**
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 * File containing the Language Handler class.
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 *
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 * @copyright Copyright (C) eZ Systems AS. All rights reserved.
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 * @license For full copyright and license information view LICENSE file distributed with this source code.
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 */
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namespace eZ\Publish\Core\Persistence\Legacy\Content\Language;
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use eZ\Publish\SPI\Persistence\Content\Language;
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use eZ\Publish\SPI\Persistence\Content\Language\Handler as BaseLanguageHandler;
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use eZ\Publish\SPI\Persistence\Content\Language\CreateStruct;
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use eZ\Publish\Core\Base\Exceptions\NotFoundException;
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use LogicException;
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/**
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 * Language Handler.
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 */
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class Handler implements BaseLanguageHandler
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{
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    /**
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     * Language Gateway.
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     *
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     * @var \eZ\Publish\Core\Persistence\Legacy\Content\Language\Gateway
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     */
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    protected $languageGateway;
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    /**
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     * Language Mapper.
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     *
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     * @var \eZ\Publish\Core\Persistence\Legacy\Content\Language\Mapper
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     */
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    protected $languageMapper;
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    /**
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     * Creates a new Language Handler.
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     *
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     * @param \eZ\Publish\Core\Persistence\Legacy\Content\Language\Gateway $languageGateway
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     * @param \eZ\Publish\Core\Persistence\Legacy\Content\Language\Mapper $languageMapper
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     */
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    public function __construct(Gateway $languageGateway, Mapper $languageMapper)
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    {
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        $this->languageGateway = $languageGateway;
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        $this->languageMapper = $languageMapper;
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    }
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    /**
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     * Create a new language.
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     *
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     * @param \eZ\Publish\SPI\Persistence\Content\Language\CreateStruct $struct
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     *
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     * @return \eZ\Publish\SPI\Persistence\Content\Language
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     */
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    public function create(CreateStruct $struct)
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    {
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        $language = $this->languageMapper->createLanguageFromCreateStruct(
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            $struct
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        );
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        $language->id = $this->languageGateway->insertLanguage($language);
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        return $language;
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    }
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    /**
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     * Update language.
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     *
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     * @param \eZ\Publish\SPI\Persistence\Content\Language $language
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     */
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    public function update(Language $language)
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    {
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        $this->languageGateway->updateLanguage($language);
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    }
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    /**
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     * Get language by id.
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     *
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     * @param mixed $id
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     *
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     * @throws \eZ\Publish\API\Repository\Exceptions\NotFoundException If language could not be found by $id
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     *
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     * @return \eZ\Publish\SPI\Persistence\Content\Language
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     */
84 View Code Duplication
    public function load($id)
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    {
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        $languages = $this->languageMapper->extractLanguagesFromRows(
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            $this->languageGateway->loadLanguageListData([$id])
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        );
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        if (count($languages) < 1) {
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            throw new NotFoundException('Language', $id);
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        }
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        return reset($languages);
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function loadList(array $ids): iterable
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    {
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        return $this->languageMapper->extractLanguagesFromRows(
0 ignored issues
show
Bug Best Practice introduced by
The return type of return $this->languageMa...eListData($ids), 'id'); (array) is incompatible with the return type declared by the interface eZ\Publish\SPI\Persisten...guage\Handler::loadList of type eZ\Publish\SPI\Persisten...ntent\Language\iterable.

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...
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            $this->languageGateway->loadLanguageListData($ids),
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            'id'
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        );
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    }
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    /**
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     * Get language by Language Code (eg: eng-GB).
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     *
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     * @param string $languageCode
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     *
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     * @throws \eZ\Publish\API\Repository\Exceptions\NotFoundException If language could not be found by $languageCode
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     *
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     * @return \eZ\Publish\SPI\Persistence\Content\Language
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     */
117 View Code Duplication
    public function loadByLanguageCode($languageCode)
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    {
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        $languages = $this->languageMapper->extractLanguagesFromRows(
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            $this->languageGateway->loadLanguageListDataByLanguageCode([$languageCode])
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        );
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        if (count($languages) < 1) {
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            throw new NotFoundException('Language', $languageCode);
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        }
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        return reset($languages);
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function loadListByLanguageCodes(array $languageCodes): iterable
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    {
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        return $this->languageMapper->extractLanguagesFromRows(
0 ignored issues
show
Bug Best Practice introduced by
The return type of return $this->languageMa...eCode($languageCodes)); (array) is incompatible with the return type declared by the interface eZ\Publish\SPI\Persisten...loadListByLanguageCodes of type eZ\Publish\SPI\Persisten...ntent\Language\iterable.

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...
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            $this->languageGateway->loadLanguageListDataByLanguageCode($languageCodes)
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        );
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    }
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    /**
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     * Get all languages.
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     *
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     * @return \eZ\Publish\SPI\Persistence\Content\Language[]
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     */
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    public function loadAll()
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    {
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        return $this->languageMapper->extractLanguagesFromRows(
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            $this->languageGateway->loadAllLanguagesData()
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        );
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    }
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    /**
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     * Delete a language.
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     *
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     * @param mixed $id
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     *
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     * @throws LogicException If language could not be deleted
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     */
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    public function delete($id)
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    {
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        if (!$this->languageGateway->canDeleteLanguage($id)) {
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            throw new LogicException("Deleting language logic error, some content still references that language and therefore it can't be deleted");
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        }
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        $this->languageGateway->deleteLanguage($id);
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    }
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}
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