{"id":297,"date":"2019-10-19T06:05:55","date_gmt":"2019-10-19T06:05:55","guid":{"rendered":"https:\/\/golangbyexamples.com\/?p=297"},"modified":"2019-12-27T16:36:57","modified_gmt":"2019-12-27T16:36:57","slug":"abstract-factory-design-pattern-go","status":"publish","type":"post","link":"https:\/\/golangbyexamples.com\/abstract-factory-design-pattern-go\/","title":{"rendered":"Abstract Factory Design Pattern in Go"},"content":{"rendered":"\n<p class=\"has-medium-font-size\">Note: Interested in understanding how all other design patterns can be implemented in GO. Please see this full reference  &#8211; <a href=\"https:\/\/golangbyexamples.com\/all-design-patterns-golang\/\">All Design Patterns in Go (Golang)<\/a><\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_17 counter-hierarchy counter-decimal ez-toc-light-blue\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" style=\"display: none;\"><i class=\"ez-toc-glyphicon ez-toc-icon-toggle\"><\/i><\/a><\/span><\/div>\n<nav><ul class=\"ez-toc-list ez-toc-list-level-1\"><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/golangbyexamples.com\/abstract-factory-design-pattern-go\/#Definition\" title=\"Definition:\">Definition:<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/golangbyexamples.com\/abstract-factory-design-pattern-go\/#Code\" title=\"Code:\">Code:<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Definition\"><\/span><strong>Definition:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"has-medium-font-size\">Abstract Factory Design Pattern is a creational design pattern that lets you create a family of related objects. It is an abstraction over the factory pattern. It is best explained with an example. Let&#8217;s say we have two factories<\/p>\n\n\n\n<ul class=\"has-medium-font-size wp-block-list\"><li><strong>nike<\/strong><\/li><li><strong>adidas<\/strong><\/li><\/ul>\n\n\n\n<p class=\"has-medium-font-size\">Imagine you need to buy a sports kit which has a <strong>shoe<\/strong> and <strong>short<\/strong>. Preferably most of the time you would want to buy a full sports kit of a similar factory i.e either <strong>nike <\/strong>or <strong>adidas. <\/strong>This is where the abstract factory comes into the picture as concrete products that you want is <strong>shoe <\/strong>and a <strong>short <\/strong>and these products will be created by the abstract factory of <strong>nike <\/strong>and <strong>adidas.<\/strong><br>Both these two factories &#8211; <strong>nike <\/strong>and <strong>adidas<\/strong> implement <strong>iSportsFactory<\/strong> interface. <br>We have two product interfaces.<\/p>\n\n\n\n<ul class=\"has-medium-font-size wp-block-list\"><li><strong>iShoe<\/strong>  &#8211; this interface is implemented by <strong>nikeShoe<\/strong> and <strong>adidasShoe<\/strong> concrete product.<\/li><li><strong>iShort<\/strong> &#8211; this interface is implemented by <strong>nikeShort<\/strong> and <strong>adidasShort<\/strong> concrete product.<\/li><\/ul>\n\n\n\n<p class=\"has-medium-font-size\">Now let&#8217;s look at code<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Code\"><\/span><strong>Code:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"has-medium-font-size\"><strong>iSportsFactory.go<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">package main\n\nimport \"fmt\"\n\ntype iSportsFactory interface {\n    makeShoe() iShoe\n    makeShort() iShort\n}\n\nfunc getSportsFactory(brand string) (iSportsFactory, error) {\n    if brand == \"adidas\" {\n        return &adidas{}, nil\n    }\n    if brand == \"nike\" {\n        return &nike{}, nil\n    }\n    return nil, fmt.Errorf(\"Wrong brand type passed\")\n}<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\"><strong>adidas.go<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">package main\n\ntype adidas struct {\n}\n\nfunc (a *adidas) makeShoe() iShoe {\n    return &adidasShoe{\n        shoe: shoe{\n            logo: \"adidas\",\n            size: 14,\n        },\n    }\n}\n\nfunc (a *adidas) makeShort() iShort {\n    return &adidasShort{\n        short: short{\n            logo: \"adidas\",\n            size: 14,\n        },\n    }\n}\n<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\"><strong>nike.go<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">package main\n\ntype nike struct {\n}\n\nfunc (n *nike) makeShoe() iShoe {\n    return &nikeShoe{\n        shoe: shoe{\n            logo: \"nike\",\n            size: 14,\n        },\n    }\n}\n\nfunc (n *nike) makeShort() iShort {\n    return &nikeShort{\n        short: short{\n            logo: \"nike\",\n            size: 14,\n        },\n    }\n}<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\"><strong>iShoe.go<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">package main\n\ntype iShoe interface {\n    setLogo(logo string)\n    setSize(size int)\n    getLogo() string\n    getSize() int\n}\n\ntype shoe struct {\n    logo string\n    size int\n}\n\nfunc (s *shoe) setLogo(logo string) {\n    s.logo = logo\n}\n\nfunc (s *shoe) getLogo() string {\n    return s.logo\n}\n\nfunc (s *shoe) setSize(size int) {\n    s.size = size\n}\n\nfunc (s *shoe) getSize() int {\n    return s.size\n}\n<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\"><strong>adidasShoe.go<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">package main\n\ntype adidasShoe struct {\n\tshoe\n}\n<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\"><strong>nikeShoe.go<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">package main\n\ntype nikeShoe struct {\n    shoe\n}<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\"><strong>iShort.go<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">package main\n\ntype iShort interface {\n    setLogo(logo string)\n    setSize(size int)\n    getLogo() string\n    getSize() int\n}\n\ntype short struct {\n    logo string\n    size int\n}\n\nfunc (s *short) setLogo(logo string) {\n    s.logo = logo\n}\n\nfunc (s *short) getLogo() string {\n    return s.logo\n}\n\nfunc (s *short) setSize(size int) {\n    s.size = size\n}\n\nfunc (s *short) getSize() int {\n    return s.size\n}<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\"><strong>adidasShort.go<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">package main\n\ntype adidasShort struct {\n    short\n}<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\"><strong>nikeShort.go<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">package main\n\ntype nikeShort struct {\n    short\n}<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\"><strong>main.go<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">package main\n\nimport \"fmt\"\n\nfunc main() {\n    adidasFactory, _ := getSportsFactory(\"adidas\")\n    nikeFactory, _ := getSportsFactory(\"nike\")\n    nikeShoe := nikeFactory.makeShoe()\n    nikeShort := nikeFactory.makeShort()\n    adidasShoe := adidasFactory.makeShoe()\n    adidasShort := adidasFactory.makeShort()\n    printShoeDetails(nikeShoe)\n    printShortDetails(nikeShort)\n    printShoeDetails(adidasShoe)\n    printShortDetails(adidasShort)\n}\n\nfunc printShoeDetails(s iShoe) {\n    fmt.Printf(\"Logo: %s\", s.getLogo())\n    fmt.Println()\n    fmt.Printf(\"Size: %d\", s.getSize())\n    fmt.Println()\n}\n\nfunc printShortDetails(s iShort) {\n    fmt.Printf(\"Logo: %s\", s.getLogo())\n    fmt.Println()\n    fmt.Printf(\"Size: %d\", s.getSize())\n    fmt.Println()\n}<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\"><strong>Output:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">Logo: nike\nSize: 14\nLogo: nike\nSize: 14\nLogo: adidas\nSize: 14\nLogo: adidas\nSize: 14<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code><\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Note: Interested in understanding how all other design patterns can be implemented in GO. Please see this full reference &#8211; All Design Patterns in Go (Golang) Table of Contents Definition:Code: Definition: Abstract&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","footnotes":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false},"categories":[1],"tags":[],"class_list":["post-297","post","type-post","status-publish","format-standard","hentry","category-tech"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Abstract Factory Design Pattern in Go - Welcome To Golang By Example<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/golangbyexamples.com\/abstract-factory-design-pattern-go\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Abstract Factory Design Pattern in Go - Welcome To Golang By Example\" \/>\n<meta property=\"og:description\" content=\"Note: Interested in understanding how all other design patterns can be implemented in GO. 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