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<?php |
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namespace eZ\Publish\Core\Persistence\Legacy\Tests\Content; |
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use eZ\Publish\SPI\Persistence\Content\Language\Handler as LanguageHandler; |
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use eZ\Publish\SPI\Persistence\Content\Language; |
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use eZ\Publish\SPI\Persistence\Content\Language\CreateStruct; |
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/** |
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* Simple mock for a Language\Handler. |
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*/ |
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class LanguageHandlerMock implements LanguageHandler |
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{ |
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protected $languages = array(); |
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public function __construct() |
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{ |
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$this->languages[] = new Language( |
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array( |
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'id' => 2, |
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'languageCode' => 'eng-US', |
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'name' => 'US english', |
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) |
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); |
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$this->languages[] = new Language( |
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array( |
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'id' => 4, |
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'languageCode' => 'eng-GB', |
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'name' => 'British english', |
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) |
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); |
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$this->languages[] = new Language( |
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array( |
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'id' => 8, |
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'languageCode' => 'ger-DE', |
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'name' => 'German', |
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) |
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); |
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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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throw new \RuntimeException('Not implemented, yet.'); |
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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 $struct |
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*/ |
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public function update(Language $struct) |
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{ |
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throw new \RuntimeException('Not implemented, yet.'); |
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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 $id |
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* |
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* @return \eZ\Publish\SPI\Persistence\Content\Language |
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*/ |
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public function load($id) |
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{ |
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foreach ($this->languages as $language) { |
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if ($language->id == $id) { |
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return $language; |
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} |
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} |
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throw new \RuntimeException("Language $id not found."); |
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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 $languageCode |
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* |
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* @return \eZ\Publish\SPI\Persistence\Content\Language |
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*/ |
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public function loadByLanguageCode($languageCode) |
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{ |
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foreach ($this->languages as $language) { |
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if ($language->languageCode == $languageCode) { |
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return $language; |
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} |
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} |
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throw new \RuntimeException("Language $languageCode not found."); |
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} |
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/** |
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* Get all languages. |
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* |
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* Return list of languages where key of hash is language code. |
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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->languages; |
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} |
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/** |
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* Delete a language. |
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* |
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* @todo Might throw an exception if the language is still associated with some content / types / (...) ? |
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* |
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* @param mixed $id |
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*/ |
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public function delete($id) |
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{ |
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throw new \RuntimeException('Not implemented, yet.'); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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View Code Duplication |
public function loadList(array $ids): iterable |
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{ |
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$languages = []; |
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foreach ($this->languages as $language) { |
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if (in_array($language->id, $ids)) { |
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$languages[$language->id] = $language; |
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} |
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} |
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return $languages; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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View Code Duplication |
public function loadListByLanguageCodes(array $languageCodes): iterable |
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{ |
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$languages = []; |
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foreach ($this->languages as $language) { |
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if (in_array($language->languageCode, $languageCodes)) { |
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$languages[$language->languageCode] = $language; |
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} |
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} |
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return $languages; |
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} |
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} |
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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:
Our function
my_function
expects aPost
object, and outputs the author of the post. The base classPost
returns a simple string and outputting a simple string will work just fine. However, the child classBlogPost
which is a sub-type ofPost
instead decided to return anobject
, and is therefore violating the SOLID principles. If aBlogPost
were passed tomy_function
, PHP would not complain, but ultimately fail when executing thestrtoupper
call in its body.