{"id":2056,"date":"2019-06-08T15:18:16","date_gmt":"2019-06-08T12:18:16","guid":{"rendered":"http:\/\/demensdeum.com\/blog\/?p=2056"},"modified":"2024-12-16T22:32:36","modified_gmt":"2024-12-16T19:32:36","slug":"template-pattern","status":"publish","type":"post","link":"https:\/\/demensdeum.com\/blog\/fr\/2019\/06\/08\/template-pattern\/","title":{"rendered":"M\u00e9thode de mod\u00e8le"},"content":{"rendered":"<p>La m\u00e9thode des mod\u00e8les fait r\u00e9f\u00e9rence aux mod\u00e8les de conception comportementale. Le mod\u00e8le d\u00e9crit une mani\u00e8re de remplacer une partie de la logique d&#8217;une classe \u00e0 la demande, laissant la partie globale inchang\u00e9e pour les descendants.<\/p>\n<figure id=\"attachment_2059\" aria-describedby=\"caption-attachment-2059\" style=\"width: 420px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.flickr.com\/photos\/diphi\/24449843465\/\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2059\" src=\"https:\/\/demensdeum.com\/blog\/wp-content\/uploads\/2019\/06\/cars-1.jpg\" alt=\"\" width=\"420\" height=\"265\" \/><\/a><figcaption id=\"caption-attachment-2059\" class=\"wp-caption-text\"><a href=\"https:\/\/www.flickr.com\/photos\/diphi\/24449843465\/\" target=\"_blank\" rel=\"noopener noreferrer\">Cuban Cars<\/a><\/figcaption><\/figure>\n<p>Supposons que nous d\u00e9veloppions une banque client, consid\u00e9rons la t\u00e2che de d\u00e9velopper un module d&#8217;autorisation &#8211;\u00a0; l&#8217;utilisateur doit pouvoir se connecter \u00e0 l&#8217;application \u00e0 l&#8217;aide de donn\u00e9es de connexion abstraites.<br \/>Le module d&#8217;autorisation doit \u00eatre multiplateforme, prenant en charge diff\u00e9rentes technologies d&#8217;autorisation et stockant les donn\u00e9es crypt\u00e9es de diff\u00e9rentes plateformes. Pour impl\u00e9menter le module, nous choisissons le langage Kotlin multiplateforme, en utilisant la classe abstraite (protocole) du module d&#8217;autorisation, nous \u00e9crirons une impl\u00e9mentation pour le t\u00e9l\u00e9phone MyPhone\u00a0:<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-unknown\" data-lang=\"unknown\"><code>class MyPhoneSuperDuperSecretMyPhoneAuthorizationStorage {\n    fun loginAndPassword() : Pair<String, String> {\n        return Pair(\"admin\", \"qwerty65435\")\n    }\n}\n\nclass ServerApiClient {\n    fun authorize(authorizationData: AuthorizationData) : Unit {\n        println(authorizationData.login)\n        println(authorizationData.password)\n        println(\"Authorized\")\n    }\n}\n\nclass AuthorizationData {\n    var login: String? = null\n    var password: String? = null\n}\n\ninterface AuthorizationModule {\n    abstract fun fetchAuthorizationData() : AuthorizationData\n    abstract fun authorize(authorizationData: AuthorizationData)\n}\n\nclass MyPhoneAuthorizationModule: AuthorizationModule {\n    \n    override fun fetchAuthorizationData() : AuthorizationData {\n        val loginAndPassword = MyPhoneSuperDuperSecretMyPhoneAuthorizationStorage().loginAndPassword()\n        val authorizationData = AuthorizationData()\n        authorizationData.login = loginAndPassword.first\n        authorizationData.password = loginAndPassword.second\n        \n        return authorizationData\n    }\n    \n    override fun authorize(authorizationData: AuthorizationData) {\n        ServerApiClient().authorize(authorizationData)\n    }\n    \n}\n\nfun main() {\n    val authorizationModule = MyPhoneAuthorizationModule()\n    val authorizationData = authorizationModule.fetchAuthorizationData()\n    authorizationModule.authorize(authorizationData)\n}\n<\/code><\/pre>\n<\/div>\n<p>Maintenant, pour chaque t\u00e9l\u00e9phone\/plateforme, nous devrons dupliquer le code d&#8217;envoi de l&#8217;autorisation au serveur, c&#8217;est une violation du principe DRY. L\u2019exemple ci-dessus est tr\u00e8s simple ; dans les classes plus complexes, il y aura encore plus de duplications. Pour \u00e9liminer la duplication de code, vous devez utiliser le mod\u00e8le de m\u00e9thode mod\u00e8le.<br \/>D\u00e9pla\u00e7ons les parties communes du module vers des m\u00e9thodes immuables et transf\u00e9rons la fonctionnalit\u00e9 de transfert de donn\u00e9es crypt\u00e9es vers des classes de plateforme sp\u00e9cifiques\u00a0:<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-unknown\" data-lang=\"unknown\"><code>class MyPhoneSuperDuperSecretMyPhoneAuthorizationStorage {\n    fun loginAndPassword() : Pair<String, String> {\n        return Pair(\"admin\", \"qwerty65435\")\n    }\n}\n\nclass ServerApiClient {\n    fun authorize(authorizationData: AuthorizationData) : Unit {\n        println(authorizationData.login)\n        println(authorizationData.password)\n        println(\"Authorized\")\n    }\n}\n\nclass AuthorizationData {\n    var login: String? = null\n    var password: String? = null\n}\n\ninterface AuthorizationModule {\n    abstract fun fetchAuthorizationData() : AuthorizationData\n    \n    fun authorize(authorizationData: AuthorizationData) {\n        ServerApiClient().authorize(authorizationData)\n    }\n}\n\nclass MyPhoneAuthorizationModule: AuthorizationModule {\n    \n    override fun fetchAuthorizationData() : AuthorizationData {\n        val loginAndPassword = MyPhoneSuperDuperSecretMyPhoneAuthorizationStorage().loginAndPassword()\n        val authorizationData = AuthorizationData()\n        authorizationData.login = loginAndPassword.first\n        authorizationData.password = loginAndPassword.second\n        \n        return authorizationData\n    }\n    \n}\n\nfun main() {\n    val authorizationModule = MyPhoneAuthorizationModule()\n    val authorizationData = authorizationModule.fetchAuthorizationData()\n    authorizationModule.authorize(authorizationData)\n}\n<\/code><\/pre>\n<\/div>\n<h3>Sources<\/h3>\n<p><a href=\"https:\/\/refactoring.guru\/ru\/design-patterns\/template-method\" rel=\"noopener noreferrer\" target=\"_blank\">https:\/\/refactoring.guru\/ru\/design- mod\u00e8les\/m\u00e9thode-mod\u00e8le<\/a><\/p>\n<h3>Code source<\/h3>\n<p><a href=\"https:\/\/gitlab.com\/demensdeum\/patterns\/\" rel=\"noopener noreferrer\" target=\"_blank\">https:\/\/gitlab.com\/demensdeum\/patterns\/<\/a>< \/p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>La m\u00e9thode des mod\u00e8les fait r\u00e9f\u00e9rence aux mod\u00e8les de conception comportementale. Le mod\u00e8le d\u00e9crit une mani\u00e8re de remplacer une partie de la logique d&#8217;une classe \u00e0 la demande, laissant la partie globale inchang\u00e9e pour les descendants. Cuban Cars Supposons que nous d\u00e9veloppions une banque client, consid\u00e9rons la t\u00e2che de d\u00e9velopper un module d&#8217;autorisation &#8211;\u00a0; l&#8217;utilisateur<a class=\"more-link\" href=\"https:\/\/demensdeum.com\/blog\/fr\/2019\/06\/08\/template-pattern\/\">Continue reading <span class=\"screen-reader-text\">&#8220;M\u00e9thode de mod\u00e8le&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[61,52],"tags":[95,107],"class_list":["post-2056","post","type-post","status-publish","format-standard","hentry","category-techie","category-tutorials","tag-patterns","tag-template-method","entry"],"translation":{"provider":"WPGlobus","version":"3.0.2","language":"fr","enabled_languages":["en","ru","zh","de","fr","ja","pt","hi"],"languages":{"en":{"title":true,"content":true,"excerpt":false},"ru":{"title":true,"content":true,"excerpt":false},"zh":{"title":true,"content":true,"excerpt":false},"de":{"title":true,"content":true,"excerpt":false},"fr":{"title":true,"content":true,"excerpt":false},"ja":{"title":true,"content":true,"excerpt":false},"pt":{"title":true,"content":true,"excerpt":false},"hi":{"title":false,"content":false,"excerpt":false}}},"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/demensdeum.com\/blog\/fr\/wp-json\/wp\/v2\/posts\/2056","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/demensdeum.com\/blog\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/demensdeum.com\/blog\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/demensdeum.com\/blog\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/demensdeum.com\/blog\/fr\/wp-json\/wp\/v2\/comments?post=2056"}],"version-history":[{"count":13,"href":"https:\/\/demensdeum.com\/blog\/fr\/wp-json\/wp\/v2\/posts\/2056\/revisions"}],"predecessor-version":[{"id":3954,"href":"https:\/\/demensdeum.com\/blog\/fr\/wp-json\/wp\/v2\/posts\/2056\/revisions\/3954"}],"wp:attachment":[{"href":"https:\/\/demensdeum.com\/blog\/fr\/wp-json\/wp\/v2\/media?parent=2056"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/demensdeum.com\/blog\/fr\/wp-json\/wp\/v2\/categories?post=2056"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/demensdeum.com\/blog\/fr\/wp-json\/wp\/v2\/tags?post=2056"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}