{"id":1508,"date":"2015-03-23T09:09:27","date_gmt":"2015-03-23T07:09:27","guid":{"rendered":"http:\/\/blog.adrianbolboaca.ro\/?p=1508"},"modified":"2020-01-15T22:04:31","modified_gmt":"2020-01-15T20:04:31","slug":"episode-6-dependency-inversion-code-cast","status":"publish","type":"post","link":"https:\/\/blog.adrianbolboaca.ro\/2015\/03\/episode-6-dependency-inversion-code-cast\/","title":{"rendered":"Legacy Coderetreat: Episode 6 &#8211; Dependency Inversion &#8211; Code Cast"},"content":{"rendered":"<h2>Dependency Inversion &#8211; code cast<\/h2>\n<h3>Blog post series<\/h3>\n<p>This blog post is part of a series about <a href=\"http:\/\/legacycoderetreat.typepad.com\/\">legacy coderetreat<\/a> and legacy code techniques you can apply during your work. Please click to see <a href=\"\/2014\/04\/legacy-coderetrea\/#sessions\">more sessions<\/a> about legacy code.<\/p>\n<h3>Code Cast<\/h3>\n<p>This is a code cast in Java.<\/p>\n<p>During this code cast you will see how to use the concept of Dependency Inversion on a legacy code base. Dependency Inversion is one way of transforming a tightly coupled system into a system that has a core and many small external dependencies. These external dependencies can be called also plugins. Read more about this concept in my <a href=\"\/2014\/12\/dependency-inversion\">previous blog post<\/a>.<\/p>\n<div class=\"epyt-video-wrapper\"><iframe loading=\"lazy\"  id=\"_ytid_51097\"  width=\"1110\" height=\"624\"  data-origwidth=\"1110\" data-origheight=\"624\" src=\"https:\/\/www.youtube.com\/embed\/YLf1GbcWYWU?enablejsapi=1&#038;autoplay=0&#038;cc_load_policy=0&#038;cc_lang_pref=&#038;iv_load_policy=1&#038;loop=0&#038;modestbranding=1&#038;rel=1&#038;fs=1&#038;playsinline=0&#038;autohide=2&#038;theme=dark&#038;color=red&#038;controls=1&#038;\" class=\"__youtube_prefs__  epyt-is-override  no-lazyload\" title=\"YouTube player\"  allow=\"fullscreen; accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen data-no-lazy=\"1\" data-skipgform_ajax_framebjll=\"\"><\/iframe><\/div>\n<p>&nbsp;<\/p>\n<h3>Acknowledgements<\/h3>\n<p>Many thanks to <a href=\"https:\/\/twitter.com\/thomassundberg\">Thomas Sundberg<\/a> for proofreading this post.<\/p>\n<a target=\"_blank\" href=\"https:\/\/drpeterscode.com\/bad-bot-exterminator-protects-wordpress-sites-from-hackers-cyber-ddos-dos-attacks.php\"><img src=\"https:\/\/blog.adrianbolboaca.ro\/wp-content\/plugins\/dpabottomofpostpage\/apixel1x1.jpg\" ><\/a><table><\/table>","protected":false},"excerpt":{"rendered":"<p>Dependency Inversion &#8211; code cast Blog post series This blog post is part of a series about legacy coderetreat and legacy code techniques you can apply during your work. Please&hellip; <\/p>\n","protected":false},"author":3,"featured_media":2493,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[159,61,346],"tags":[139,162,262,256,206,107,173,161,113,106,260],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Dependency Inversion - codecast by Adrian Bolboaca<\/title>\n<meta name=\"description\" content=\"See how you can apply Dependency Inversion on legacy code in a code cast showing how to inject the dependencies through the constructor\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.adrianbolboaca.ro\/2015\/03\/episode-6-dependency-inversion-code-cast\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Dependency Inversion - codecast by Adrian Bolboaca\" \/>\n<meta property=\"og:description\" content=\"See how you can apply Dependency Inversion on legacy code in a code cast showing how to inject the dependencies through the constructor\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blog.adrianbolboaca.ro\/2015\/03\/episode-6-dependency-inversion-code-cast\/\" \/>\n<meta property=\"og:site_name\" content=\"Adrian Bolboaca\" \/>\n<meta property=\"article:published_time\" content=\"2015-03-23T07:09:27+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2020-01-15T20:04:31+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blog.adrianbolboaca.ro\/wp-content\/uploads\/2015\/03\/legacy-code-cast-ep-6.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"1080\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Adrian Bolboaca\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Adrian Bolboaca\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/2015\/03\/episode-6-dependency-inversion-code-cast\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/2015\/03\/episode-6-dependency-inversion-code-cast\/\"},\"author\":{\"name\":\"Adrian Bolboaca\",\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/#\/schema\/person\/9894e1b2a4241be86991388625407d76\"},\"headline\":\"Legacy Coderetreat: Episode 6 &#8211; Dependency Inversion &#8211; Code Cast\",\"datePublished\":\"2015-03-23T07:09:27+00:00\",\"dateModified\":\"2020-01-15T20:04:31+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/2015\/03\/episode-6-dependency-inversion-code-cast\/\"},\"wordCount\":133,\"commentCount\":3,\"publisher\":{\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/#\/schema\/person\/9894e1b2a4241be86991388625407d76\"},\"keywords\":[\"Automated Tests\",\"Characterization Tests\",\"Code cast\",\"Coderetreat\",\"Depdendency\",\"Existing Code\",\"Inversion\",\"Java\",\"Legacy\",\"Legacy Coderetreat\",\"Refactoring\"],\"articleSection\":[\"Code cast\",\"Legacy code\",\"Legacy Code Codecast\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/blog.adrianbolboaca.ro\/2015\/03\/episode-6-dependency-inversion-code-cast\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/2015\/03\/episode-6-dependency-inversion-code-cast\/\",\"url\":\"https:\/\/blog.adrianbolboaca.ro\/2015\/03\/episode-6-dependency-inversion-code-cast\/\",\"name\":\"Dependency Inversion - codecast by Adrian Bolboaca\",\"isPartOf\":{\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/#website\"},\"datePublished\":\"2015-03-23T07:09:27+00:00\",\"dateModified\":\"2020-01-15T20:04:31+00:00\",\"description\":\"See how you can apply Dependency Inversion on legacy code in a code cast showing how to inject the dependencies through the constructor\",\"breadcrumb\":{\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/2015\/03\/episode-6-dependency-inversion-code-cast\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/blog.adrianbolboaca.ro\/2015\/03\/episode-6-dependency-inversion-code-cast\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/2015\/03\/episode-6-dependency-inversion-code-cast\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/blog.adrianbolboaca.ro\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Legacy Coderetreat: Episode 6 &#8211; Dependency Inversion &#8211; Code Cast\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/#website\",\"url\":\"https:\/\/blog.adrianbolboaca.ro\/\",\"name\":\"Adrian Bolboaca\",\"description\":\"Programmer, Trainer, Coach\",\"publisher\":{\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/#\/schema\/person\/9894e1b2a4241be86991388625407d76\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/blog.adrianbolboaca.ro\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/#\/schema\/person\/9894e1b2a4241be86991388625407d76\",\"name\":\"Adrian Bolboaca\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/blog.adrianbolboaca.ro\/wp-content\/uploads\/2019\/11\/Adi-300x400.jpg\",\"contentUrl\":\"https:\/\/blog.adrianbolboaca.ro\/wp-content\/uploads\/2019\/11\/Adi-300x400.jpg\",\"width\":300,\"height\":400,\"caption\":\"Adrian Bolboaca\"},\"logo\":{\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/#\/schema\/person\/image\/\"},\"description\":\"Adrian was involved in developing software for domains like energy, ecommerce, banking, customs and ERP\/CRM. He has been working with companies from Netherlands, Romania, Italy, France and Germany, and he is knowledgeable in software technical domains like: clean code, unit testing, test driven development, simple design, emergent design, working effectively with legacy code. As a continuous learner and challenger of existing ideas and concepts, Adrian is a supporter of movements that give new ideas on how to continuously improve software and that embrace the values of software quality and efficiency. He facilitated many code retreats in Romania, Belgium, France, Germany, Netherlands, Finland, Bulgaria and has a keen interest in serious games and using gamestorming for continuous improvement. He is fluent in Romanian, English and French, but when it comes to programming languages he supports language agnosticism, since he strongly believes that a programming language is only a tool towards higher level software concepts. As a constant participant to conferences and workshops, he is recognized for challenging ideas and getting people out of their comfort zone, not out of disrespect or lack of reverence for his peers, but out of his desire to show people that there are always things to learn. \u201cI try to be a continuous learner and a continuous teacher, because I think good software comes from the skills of the people that are involved in the process, on each and every level. Whenever I write code I focus on reducing domain complexity to obtain maintainable software. I love to develop software that helps companies to improve their business, to implement solutions that improve their internal processes and to motivate teams to use their capabilities to yet another level.\u201d Adrian works as a technical and organizational trainer and coach at Mozaic Works.\",\"sameAs\":[\"http:\/\/blog.adrianbolboaca.ro\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Dependency Inversion - codecast by Adrian Bolboaca","description":"See how you can apply Dependency Inversion on legacy code in a code cast showing how to inject the dependencies through the constructor","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/blog.adrianbolboaca.ro\/2015\/03\/episode-6-dependency-inversion-code-cast\/","og_locale":"en_US","og_type":"article","og_title":"Dependency Inversion - codecast by Adrian Bolboaca","og_description":"See how you can apply Dependency Inversion on legacy code in a code cast showing how to inject the dependencies through the constructor","og_url":"https:\/\/blog.adrianbolboaca.ro\/2015\/03\/episode-6-dependency-inversion-code-cast\/","og_site_name":"Adrian Bolboaca","article_published_time":"2015-03-23T07:09:27+00:00","article_modified_time":"2020-01-15T20:04:31+00:00","og_image":[{"width":1920,"height":1080,"url":"https:\/\/blog.adrianbolboaca.ro\/wp-content\/uploads\/2015\/03\/legacy-code-cast-ep-6.png","type":"image\/png"}],"author":"Adrian Bolboaca","twitter_misc":{"Written by":"Adrian Bolboaca","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/blog.adrianbolboaca.ro\/2015\/03\/episode-6-dependency-inversion-code-cast\/#article","isPartOf":{"@id":"https:\/\/blog.adrianbolboaca.ro\/2015\/03\/episode-6-dependency-inversion-code-cast\/"},"author":{"name":"Adrian Bolboaca","@id":"https:\/\/blog.adrianbolboaca.ro\/#\/schema\/person\/9894e1b2a4241be86991388625407d76"},"headline":"Legacy Coderetreat: Episode 6 &#8211; Dependency Inversion &#8211; Code Cast","datePublished":"2015-03-23T07:09:27+00:00","dateModified":"2020-01-15T20:04:31+00:00","mainEntityOfPage":{"@id":"https:\/\/blog.adrianbolboaca.ro\/2015\/03\/episode-6-dependency-inversion-code-cast\/"},"wordCount":133,"commentCount":3,"publisher":{"@id":"https:\/\/blog.adrianbolboaca.ro\/#\/schema\/person\/9894e1b2a4241be86991388625407d76"},"keywords":["Automated Tests","Characterization Tests","Code cast","Coderetreat","Depdendency","Existing Code","Inversion","Java","Legacy","Legacy Coderetreat","Refactoring"],"articleSection":["Code cast","Legacy code","Legacy Code Codecast"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/blog.adrianbolboaca.ro\/2015\/03\/episode-6-dependency-inversion-code-cast\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/blog.adrianbolboaca.ro\/2015\/03\/episode-6-dependency-inversion-code-cast\/","url":"https:\/\/blog.adrianbolboaca.ro\/2015\/03\/episode-6-dependency-inversion-code-cast\/","name":"Dependency Inversion - codecast by Adrian Bolboaca","isPartOf":{"@id":"https:\/\/blog.adrianbolboaca.ro\/#website"},"datePublished":"2015-03-23T07:09:27+00:00","dateModified":"2020-01-15T20:04:31+00:00","description":"See how you can apply Dependency Inversion on legacy code in a code cast showing how to inject the dependencies through the constructor","breadcrumb":{"@id":"https:\/\/blog.adrianbolboaca.ro\/2015\/03\/episode-6-dependency-inversion-code-cast\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/blog.adrianbolboaca.ro\/2015\/03\/episode-6-dependency-inversion-code-cast\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/blog.adrianbolboaca.ro\/2015\/03\/episode-6-dependency-inversion-code-cast\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/blog.adrianbolboaca.ro\/"},{"@type":"ListItem","position":2,"name":"Legacy Coderetreat: Episode 6 &#8211; Dependency Inversion &#8211; Code Cast"}]},{"@type":"WebSite","@id":"https:\/\/blog.adrianbolboaca.ro\/#website","url":"https:\/\/blog.adrianbolboaca.ro\/","name":"Adrian Bolboaca","description":"Programmer, Trainer, Coach","publisher":{"@id":"https:\/\/blog.adrianbolboaca.ro\/#\/schema\/person\/9894e1b2a4241be86991388625407d76"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/blog.adrianbolboaca.ro\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":["Person","Organization"],"@id":"https:\/\/blog.adrianbolboaca.ro\/#\/schema\/person\/9894e1b2a4241be86991388625407d76","name":"Adrian Bolboaca","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/blog.adrianbolboaca.ro\/#\/schema\/person\/image\/","url":"https:\/\/blog.adrianbolboaca.ro\/wp-content\/uploads\/2019\/11\/Adi-300x400.jpg","contentUrl":"https:\/\/blog.adrianbolboaca.ro\/wp-content\/uploads\/2019\/11\/Adi-300x400.jpg","width":300,"height":400,"caption":"Adrian Bolboaca"},"logo":{"@id":"https:\/\/blog.adrianbolboaca.ro\/#\/schema\/person\/image\/"},"description":"Adrian was involved in developing software for domains like energy, ecommerce, banking, customs and ERP\/CRM. He has been working with companies from Netherlands, Romania, Italy, France and Germany, and he is knowledgeable in software technical domains like: clean code, unit testing, test driven development, simple design, emergent design, working effectively with legacy code. As a continuous learner and challenger of existing ideas and concepts, Adrian is a supporter of movements that give new ideas on how to continuously improve software and that embrace the values of software quality and efficiency. He facilitated many code retreats in Romania, Belgium, France, Germany, Netherlands, Finland, Bulgaria and has a keen interest in serious games and using gamestorming for continuous improvement. He is fluent in Romanian, English and French, but when it comes to programming languages he supports language agnosticism, since he strongly believes that a programming language is only a tool towards higher level software concepts. As a constant participant to conferences and workshops, he is recognized for challenging ideas and getting people out of their comfort zone, not out of disrespect or lack of reverence for his peers, but out of his desire to show people that there are always things to learn. \u201cI try to be a continuous learner and a continuous teacher, because I think good software comes from the skills of the people that are involved in the process, on each and every level. Whenever I write code I focus on reducing domain complexity to obtain maintainable software. I love to develop software that helps companies to improve their business, to implement solutions that improve their internal processes and to motivate teams to use their capabilities to yet another level.\u201d Adrian works as a technical and organizational trainer and coach at Mozaic Works.","sameAs":["http:\/\/blog.adrianbolboaca.ro"]}]}},"_links":{"self":[{"href":"https:\/\/blog.adrianbolboaca.ro\/wp-json\/wp\/v2\/posts\/1508"}],"collection":[{"href":"https:\/\/blog.adrianbolboaca.ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.adrianbolboaca.ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.adrianbolboaca.ro\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.adrianbolboaca.ro\/wp-json\/wp\/v2\/comments?post=1508"}],"version-history":[{"count":0,"href":"https:\/\/blog.adrianbolboaca.ro\/wp-json\/wp\/v2\/posts\/1508\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.adrianbolboaca.ro\/wp-json\/wp\/v2\/media\/2493"}],"wp:attachment":[{"href":"https:\/\/blog.adrianbolboaca.ro\/wp-json\/wp\/v2\/media?parent=1508"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.adrianbolboaca.ro\/wp-json\/wp\/v2\/categories?post=1508"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.adrianbolboaca.ro\/wp-json\/wp\/v2\/tags?post=1508"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}