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ext { springVersion = "3.1.0.RELEASE" emailNotification = "[email protected]" } Above code is the snippet of build.gradle
I understand that call ext method with { } closure parameter. it's right? So I think gradle is accessing springVersion and emailNotification. I'm gonna verify my assumption with below code
def ext(data) { println data.springVersion } ext { springVersion = "3.1.0.RELEASE" emailNotification = "[email protected]" } but run that code below Error occured.
groovy.lang.MissingPropertyException: No such property: springVersion for class: Test do you explain ext and code block specifically?
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All enhanced objects in Gradle's domain model can hold extra user-defined properties. This includes, but is not limited to, projects, tasks, and source sets. Extra properties can be added, read and set via the owning object's ext property. Alternatively, an ext block can be used to add multiple properties at once.
ext is shorthand for project. ext , and is used to define extra properties for the project object. (It's also possible to define extra properties for many other objects.) When reading an extra property, the ext. is omitted (e.g. println project.
There are two general types of plugins in Gradle, binary plugins and script plugins.
Gradle is a build automation tool known for its flexibility to build software. A build automation tool is used to automate the creation of applications. The building process includes compiling, linking, and packaging the code. The process becomes more consistent with the help of build automation tools.
The fundamental building blocks of Gradle are projects and tasks. In this case, since the java plugin is applied, all necessary tasks for building a Java project are defined implicitly. Some of those tasks are assemble, check, build, jar, javadoc, clean and many more.
Gradle assumes that each build script is encoded using UTF-8. The Project API Build scripts describe your build by configuring projects. A project is an abstract concept, but you typically map a Gradle project to a software component that needs to be built, like a library or an application.
During the execution of Task, Gradle is executing each of its Actions in order, by calling the Action.execute (T) method. Gradle also generates a settings.gradle file: The settings.gradle file is a Groovy script as well. In contrast to the build.gradle file, only one settings.gradle file is executed per Gradle build.
The gradlecommand looks for a file called build.gradlein the current directory.[1] We call this build.gradlefile a build script, although strictly speaking it is a build configuration script, as we will see later. The build script defines a project and its tasks. To try this out, create the following build script named build.gradle.
ext is shorthand for project.ext, and is used to define extra properties for the project object. (It's also possible to define extra properties for many other objects.) When reading an extra property, the ext. is omitted (e.g. println project.springVersion or println springVersion). The same works from within methods. It does not make sense to declare a method named ext.
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