{"id":3600,"date":"2019-10-09T16:33:26","date_gmt":"2019-10-09T16:33:26","guid":{"rendered":"http:\/\/codethataint.com\/blog\/?p=3600"},"modified":"2019-12-31T16:44:05","modified_gmt":"2019-12-31T16:44:05","slug":"gradle-basics","status":"publish","type":"post","link":"https:\/\/codethataint.com\/blog\/gradle-basics\/","title":{"rendered":"Gradle Basics"},"content":{"rendered":"
    \n
  1. Gradle is Partly Declarative and Partly Programmatic and Uses Domain Specific Language(DSL) coded in groovy or kotlin in build.gradle <\/li>\n
  2. Gradle Parses build.gradle file and constructs DAG(Directed Acyclic Graph) and constructs a graph of task<\/li>\n
  3. Gradle executes tasks in order.If ouput of task is same as last output, then task wont be executed<\/li>\n
  4. Gradle manages trasitive dependency on its own(Similar to maven) and gradle uses repositories.<\/li>\n
  5. Gradle updates to new version of Dependencies<\/li>\n<\/ol>\n

    Teardown of build.gradle<\/strong> file <\/p>\n

      \n
    1. To make gradle, java aware we need to add apply plugin:’java’ <\/li>\n
    2. Once the above line is added, the following tasks get tagged to project – clean, assemble, compile, test<\/li>\n
    3. dependencies and repositories are added in flower bracket like one below<\/li>\n
    4. under dependencies we can have multiple tasks. In the below code compile<\/em> is added as a task<\/li>\n<\/ol>\n

      build.gradle<\/strong><\/p>\n

      \r\ngroup 'com.mugil.employeeManagement'\r\nversion '1.0-Snapshot'\r\n\r\napply plugin: 'java'\r\n\r\nsourceCompatibility=1.8\r\n\r\nrepositories {    \r\n    mavenCentral()\r\n}\r\n\r\ndependencies {\r\n\tcompile 'com.google.code.gson:gson:2.8.4'\r\n}\r\n<\/pre>\n
      What is the Difference between gradlew and gradle?<\/strong><\/p>\n
      gradlew is a wrapper(w – character) that uses gradle.<\/p>\n
      Under the hood gradlew performs three main things:<\/em><\/p>\n
        \n
      1. Download and install the correct gradle version<\/li>\n
      2. Parse the arguments<\/li>\n
      3. Call a gradle task<\/li>\n<\/ol>\n
        Using Gradle Wrapper we can distribute\/share a project to everybody to use the same version and Gradle’s functionality(compile, build, install…) even if it has not been installed.<\/p>\n
        To create a wrapper run:<\/p>\n
        \r\ngradle wrapper\r\n<\/pre>\n
        This command generate:
        \n\"\"<\/p>\n
        gradle-wrapper.properties<\/em> will contain the information about the Gradle distribution<\/p>\n
        How to skip Gradle Test?<\/strong><\/p>\n
        \r\ngradle build -x test \r\n<\/pre>\n
        How to supply Argument to Spring Controller during application startup in Gradle Wrapper <\/strong><\/p>\n
        \r\ngradlew bootRun --args='--welcome.message=Mugil'\r\n<\/pre>\n
        WelcomeController.java<\/strong>
        \nIn the below code welcomeMsg variable is assigned value during application startup. In similar ways environment variables could be setup
        \nby supplying arguments as parameters while executing gradlew bootrun <\/p>\n
        \r\nimport org.springframework.beans.factory.annotation.Autowired;\r\nimport org.springframework.beans.factory.annotation.Value;\r\nimport org.springframework.web.bind.annotation.GetMapping;\r\nimport org.springframework.web.bind.annotation.RestController;\r\n\r\n@RestController\r\npublic class WelcomeController {\r\n    public String welcomeMsg;\r\n\r\n    @Autowired\r\n    public WelcomeController(@Value("${welcome.message}") String message) {\r\n        welcomeMsg = message;\r\n        System.out.println("Hi "+ message);\r\n    }\r\n\r\n    @GetMapping("\/")\r\n    public String sayHello() {\r\n        return "Mugil";\r\n    }\r\n}\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"
        Gradle is Partly Declarative and Partly Programmatic and Uses Domain Specific Language(DSL) coded in groovy or kotlin in build.gradle Gradle Parses build.gradle file and constructs DAG(Directed Acyclic Graph) and constructs a graph of task Gradle executes tasks in order.If ouput of task is same as last output, then task wont be executed Gradle manages trasitive… Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[290],"tags":[],"class_list":["post-3600","post","type-post","status-publish","format-standard","hentry","category-basics-gradle"],"_links":{"self":[{"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/posts\/3600","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/comments?post=3600"}],"version-history":[{"count":5,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/posts\/3600\/revisions"}],"predecessor-version":[{"id":3633,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/posts\/3600\/revisions\/3633"}],"wp:attachment":[{"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/media?parent=3600"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/categories?post=3600"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/tags?post=3600"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}