Package org.gradle.api.initialization

## Interface Settings

- All Superinterfaces:
    `ExtensionAware`, `PluginAware`

      public interface Settings
      extends PluginAware, ExtensionAware

  Declares the configuration required to instantiate and configure the hierarchy of `Project` instances which are to participate in a build.

  There is a one-to-one correspondence between a `Settings` instance and a `"settings.gradle"` settings file. Before Gradle assembles the projects for a build, it creates a `Settings` instance and executes the settings file against it.

  ### Assembling a Multi-Project Build

  One of the purposes of the `Settings` object is to allow you to declare the projects which are to be included in the build. You add projects to the build using the `include(String...)` method. There is always a root project included in a build. It is added automatically when the `Settings` object is created. The root project's name defaults to the name of the directory containing the settings file. The root project's project directory defaults to the directory containing the settings file.

  When a project is included in the build, a `ProjectDescriptor` is created. You can use this descriptor to change the default values for several properties of the project.

  ### Using Settings in a Settings File

  #### Dynamic Properties

  In addition to the properties of this interface, the `Settings` object makes some additional read-only properties available to the settings script. This includes properties from the following sources:

  - Defined in the "gradle.properties" file located in the settings directory of the build.
  - Defined the "gradle.properties" file located in the user's `.gradle` directory.
  - Provided on the command-line using the -P option.

- - ### Field Summary

    Fields
    Modifier and Type | Field | Description
    --- | --- | ---
    `static String` | `DEFAULT_SETTINGS_FILE` | The default name for the settings file.

  - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `void` | `buildCache​(Action<? super BuildCacheConfiguration> action)` | Configures build cache.
    `void` | `enableFeaturePreview​(String name)` | Enables a feature preview by name.
    `ProjectDescriptor` | `findProject​(File projectDir)` | Returns the project with the given project directory.
    `ProjectDescriptor` | `findProject​(String path)` | Returns the project with the given path.
    `BuildCacheConfiguration` | `getBuildCache()` | Returns the build cache configuration.
    `ScriptHandler` | `getBuildscript()` | Returns the build script handler for settings.
    `Gradle` | `getGradle()` | Returns the `Gradle` instance for the current build.
    `PluginManagementSpec` | `getPluginManagement()` | Returns the plugin management configuration.
    `File` | `getRootDir()` | Returns the root directory of the build.
    `ProjectDescriptor` | `getRootProject()` | Returns the root project of the build.
    `Settings` | `getSettings()` | Returns this settings object.
    `File` | `getSettingsDir()` | Returns the settings directory of the build.
    `SourceControl` | `getSourceControl()` | Returns the source control configuration.
    `StartParameter` | `getStartParameter()` | Returns the set of parameters used to invoke this instance of Gradle.
    `void` | `include​(String... projectPaths)` | Adds the given projects to the build.
    `void` | `includeBuild​(Object rootProject)` | Includes a build at the specified path to the composite build.
    `void` | `includeBuild​(Object rootProject, Action<ConfigurableIncludedBuild> configuration)` | Includes a build at the specified path to the composite build, with the supplied configuration.
    `void` | `includeFlat​(String... projectNames)` | Adds the given projects to the build.
    `void` | `pluginManagement​(Action<? super PluginManagementSpec> pluginManagementSpec)` | Configures plugin management.
    `ProjectDescriptor` | `project​(File projectDir)` | Returns the project with the given project directory.
    `ProjectDescriptor` | `project​(String path)` | Returns the project with the given path.
    `void` | `sourceControl​(Action<? super SourceControl> configuration)` | Configures source control.

    - ### Methods inherited from interface org.gradle.api.plugins.ExtensionAware

      `getExtensions`

    - ### Methods inherited from interface org.gradle.api.plugins.PluginAware

      `apply, apply, apply, getPluginManager, getPlugins`

- - ### Field Detail

    - #### DEFAULT_SETTINGS_FILE

          static final String DEFAULT_SETTINGS_FILE

      The default name for the settings file.

      See Also:
        Constant Field Values

  - ### Method Detail

    - #### include

          void include​(String... projectPaths)

      Adds the given projects to the build. Each path in the supplied list is treated as the path of a project to add to the build. Note that these path are not file paths, but instead specify the location of the new project in the project hierarchy. As such, the supplied paths must use the ':' character as separator (and NOT '/').

      The last element of the supplied path is used as the project name. The supplied path is converted to a project directory relative to the root project directory. The project directory can be altered by changing the 'projectDir' property after the project has been included (see `ProjectDescriptor.setProjectDir(File)`)

      As an example, the path `a:b` adds a project with path `:a:b`, name `b` and project directory `$rootDir/a/b`. It also adds the a project with path `:a`, name `a` and project directory `$rootDir/a`, if it does not exist already.

      Some common examples of using the project path are:

             // include two projects, 'foo' and 'foo:bar'
             // directories are inferred by replacing ':' with '/'
             include 'foo:bar'

             // include one project whose project dir does not match the logical project path
             include 'baz'
             project(':baz').projectDir = file('foo/baz')

             // include many projects whose project dirs do not match the logical project paths
             file('subprojects').eachDir { dir ->
               include dir.name
               project(":${dir.name}").projectDir = dir
             }

      Parameters:
        `projectPaths` - the projects to add.

    - #### includeFlat

          void includeFlat​(String... projectNames)

      Adds the given projects to the build. Each name in the supplied list is treated as the name of a project to add to the build.

      The supplied name is converted to a project directory relative to the parent directory of the root project directory.

      As an example, the name `a` add a project with path `:a`, name `a` and project directory `$rootDir/../a`.

      Parameters:
        `projectNames` - the projects to add.

    - #### getSettings

          Settings getSettings()

      Returns this settings object.

      Returns:
        This settings object. Never returns null.

    - #### getBuildscript

          @Incubating
          ScriptHandler getBuildscript()

      Returns the build script handler for settings. You can use this handler to query details about the build script for settings, and manage the classpath used to compile and execute the settings script.
      Returns:
        the classpath handler. Never returns null.
      Since:
        4.4

    - #### getSettingsDir

          File getSettingsDir()

      Returns the settings directory of the build. The settings directory is the directory containing the settings file.

      Returns:
        The settings directory. Never returns null.

    - #### getRootDir

          File getRootDir()

      Returns the root directory of the build. The root directory is the project directory of the root project.

      Returns:
        The root directory. Never returns null.

    - #### getRootProject

          ProjectDescriptor getRootProject()

      Returns the root project of the build.

      Returns:
        The root project. Never returns null.

    - #### project

          ProjectDescriptor project​(String path)
                             throws UnknownProjectException

      Returns the project with the given path.

      Parameters:
        `path` - The path.
      Returns:
        The project with the given path. Never returns null.
      Throws:
        `UnknownProjectException` - If no project with the given path exists.

    - #### findProject

          @Nullable
          ProjectDescriptor findProject​(String path)

      Returns the project with the given path.

      Parameters:
        `path` - The path
      Returns:
        The project with the given path. Returns null if no such project exists.

    - #### project

          ProjectDescriptor project​(File projectDir)
                             throws UnknownProjectException

      Returns the project with the given project directory.

      Parameters:
        `projectDir` - The project directory.
      Returns:
        The project with the given project directory. Never returns null.
      Throws:
        `UnknownProjectException` - If no project with the given path exists.

    - #### findProject

          @Nullable
          ProjectDescriptor findProject​(File projectDir)

      Returns the project with the given project directory.

      Parameters:
        `projectDir` - The project directory.
      Returns:
        The project with the given project directory. Returns null if no such project exists.

    - #### getStartParameter

          StartParameter getStartParameter()

      Returns the set of parameters used to invoke this instance of Gradle.

      Returns:
        The parameters. Never returns null.

    - #### getGradle

          Gradle getGradle()

      Returns the `Gradle` instance for the current build.
      Returns:
        The Gradle instance. Never returns null.

    - #### includeBuild

          void includeBuild​(Object rootProject)

      Includes a build at the specified path to the composite build.
      Parameters:
        `rootProject` - The path to the root project directory for the build.
      Since:
        3.1

    - #### includeBuild

          void includeBuild​(Object rootProject,
                            Action<ConfigurableIncludedBuild> configuration)

      Includes a build at the specified path to the composite build, with the supplied configuration.
      Parameters:
        `rootProject` - The path to the root project directory for the build.
        `configuration` - An action to configure the included build.
      Since:
        3.1

    - #### getBuildCache

          BuildCacheConfiguration getBuildCache()

      Returns the build cache configuration.
      Since:
        3.5

    - #### buildCache

          void buildCache​(Action<? super BuildCacheConfiguration> action)

      Configures build cache.
      Since:
        3.5

    - #### pluginManagement

          void pluginManagement​(Action<? super PluginManagementSpec> pluginManagementSpec)

      Configures plugin management.
      Since:
        3.5

    - #### getPluginManagement

          PluginManagementSpec getPluginManagement()

      Returns the plugin management configuration.
      Since:
        3.5

    - #### sourceControl

          @Incubating
          void sourceControl​(Action<? super SourceControl> configuration)

      Configures source control.
      Since:
        4.4

    - #### getSourceControl

          @Incubating
          SourceControl getSourceControl()

      Returns the source control configuration.
      Since:
        4.4

    - #### enableFeaturePreview

          @Incubating
          void enableFeaturePreview​(String name)

      Enables a feature preview by name.
      Parameters:
        `name` - the name of the feature to enable
      Since:
        4.6