Package: org.gradle.api

## [Java] Interface Project

- org.gradle.api.plugins.ExtensionAware

- All Superinterfaces:
    PluginAware, ExtensionAware

  This interface is the main API you use to interact with Gradle from your build file. From a `Project`, you have programmatic access to all of Gradle's features.

  ### Lifecycle

  There is a one-to-one relationship between a `Project` and a `{`

  value:
    #DEFAULT_BUILD_FILE} file. During build initialisation, Gradle assembles a `Project` object for each project which is to participate in the build, as follows:
    - Create a Settings instance for the build.
    - Evaluate the `{@value org.gradle.api.initialization.Settings#DEFAULT_SETTINGS_FILE}` script, if present, against the Settings object to configure it.
    - Use the configured Settings object to create the hierarchy of `Project` instances.
    - Finally, evaluate each `Project` by executing its `{@value #DEFAULT_BUILD_FILE}` file, if present, against the project. The projects are evaluated in breadth-wise order, such that a project is evaluated before its child projects. This order can be overridden by calling `evaluationDependsOnChildren()` or by adding an explicit evaluation dependency using `evaluationDependsOn(String)`.

    ### Tasks

    A project is essentially a collection of Task objects. Each task performs some basic piece of work, such as compiling classes, or running unit tests, or zipping up a WAR file. You add tasks to a project using one of the `create()` methods on TaskContainer, such as TaskContainer.create. You can locate existing tasks using one of the lookup methods on TaskContainer, such as TaskCollection.getByName.

    ### Dependencies

    A project generally has a number of dependencies it needs in order to do its work. Also, a project generally produces a number of artifacts, which other projects can use. Those dependencies are grouped in configurations, and can be retrieved and uploaded from repositories. You use the ConfigurationContainer returned by getConfigurations() method to manage the configurations. The DependencyHandler returned by getDependencies() method to manage the dependencies. The ArtifactHandler returned by getArtifacts() method to manage the artifacts. The RepositoryHandler returned by getRepositories() method to manage the repositories.

    ### Multi-project Builds

    Projects are arranged into a hierarchy of projects. A project has a name, and a fully qualified path which uniquely identifies it in the hierarchy.

    ### Plugins

    Plugins can be used to modularise and reuse project configuration. Plugins can be applied using the PluginAware.apply method, or by using the plugins script block.

    ### Properties

    Gradle executes the project's build file against the `Project` instance to configure the project. Any property or method which your script uses is delegated through to the associated `Project` object. This means, that you can use any of the methods and properties on the `Project` interface directly in your script.

    For example:

         defaultTasks('some-task')  // Delegates to Project.defaultTasks()
         reportsDir = file('reports') // Delegates to Project.file() and the Java Plugin

    You can also access the `Project` instance using the `project` property. This can make the script clearer in some cases. For example, you could use `project.name` rather than `name` to access the project's name.

    A project has 5 property 'scopes', which it searches for properties. You can access these properties by name in your build file, or by calling the project's property(String) method. The scopes are:

    - The `Project` object itself. This scope includes any property getters and setters declared by the `Project` implementation class. For example, getRootProject() is accessible as the `rootProject` property. The properties of this scope are readable or writable depending on the presence of the corresponding getter or setter method.
    - The extra properties of the project. Each project maintains a map of extra properties, which can contain any arbitrary name -> value pair. Once defined, the properties of this scope are readable and writable. See extra properties for more details.
    - The extensions added to the project by the plugins. Each extension is available as a read-only property with the same name as the extension.
    - The convention properties added to the project by the plugins. A plugin can add properties and methods to a project through the project's Convention object. The properties of this scope may be readable or writable, depending on the convention objects.
    - The tasks of the project. A task is accessible by using its name as a property name. The properties of this scope are read-only. For example, a task called `compile` is accessible as the `compile` property.
    - The extra properties and convention properties inherited from the project's parent, recursively up to the root project. The properties of this scope are read-only.

    When reading a property, the project searches the above scopes in order, and returns the value from the first scope it finds the property in. If not found, an exception is thrown. See property(String) for more details.

    When writing a property, the project searches the above scopes in order, and sets the property in the first scope it finds the property in. If not found, an exception is thrown. See setProperty(String, Object) for more details.

    #### Extra Properties

    All extra properties must be defined through the "ext" namespace. Once an extra property has been defined, it is available directly on the owning object (in the below case the Project, Task, and sub-projects respectively) and can be read and updated. Only the initial declaration that needs to be done via the namespace.

         project.ext.prop1 = "foo"
         task doStuff {
             ext.prop2 = "bar"
         }
         subprojects { ext.${prop3} = false }

    Reading extra properties is done through the "ext" or through the owning object.

         ext.isSnapshot = version.endsWith("-SNAPSHOT")
         if (isSnapshot) {
             // do snapshot stuff
         }

    #### Dynamic Methods

    A project has 5 method 'scopes', which it searches for methods:

    - The `Project` object itself.
    - The build file. The project searches for a matching method declared in the build file.
    - The extensions added to the project by the plugins. Each extension is available as a method which takes a closure or Action as a parameter.
    - The convention methods added to the project by the plugins. A plugin can add properties and method to a project through the project's Convention object.
    - The tasks of the project. A method is added for each task, using the name of the task as the method name and taking a single closure or Action parameter. The method calls the Task.configure method for the associated task with the provided closure. For example, if the project has a task called `compile`, then a method is added with the following signature: `void compile(Closure configureClosure)`.
    - The methods of the parent project, recursively up to the root project.

- - ### Field Summary

    Fields
    Modifiers | Name | Description
    --- | --- | ---
    `static String` | `DEFAULT_BUILD_DIR_NAME` | The default build directory name.
    `static String` | `DEFAULT_BUILD_FILE` | The default project build file name.
    `static String` | `DEFAULT_STATUS` |
    `static String` | `DEFAULT_VERSION` |
    `static String` | `GRADLE_PROPERTIES` |
    `static String` | `PATH_SEPARATOR` | The hierarchy separator for project and task path names.
    `static String` | `SYSTEM_PROP_PREFIX` |

  - ### Methods Summary

    Methods
    Type | Name and description
    --- | ---
    `String` | `absoluteProjectPath(String path)`
    `void` | `afterEvaluate(Action<? super Project> action)` Adds an action to execute immediately after this project is evaluated.
    `void` | `afterEvaluate(groovy.lang.Closure closure)`
    `void` | `allprojects(Action<? super Project> action)`
    `void` | `allprojects(groovy.lang.Closure configureClosure)`
    `AntBuilder` | `ant(groovy.lang.Closure configureClosure)`
    `void` | `artifacts(groovy.lang.Closure configureClosure)`
    `void` | `beforeEvaluate(Action<? super Project> action)` Adds an action to execute immediately before this project is evaluated.
    `void` | `beforeEvaluate(groovy.lang.Closure closure)`
    `void` | `buildscript(groovy.lang.Closure configureClosure)`
    `void` | `configurations(groovy.lang.Closure configureClosure)`
    `Object` | `configure(Object object, groovy.lang.Closure configureClosure)`
    `Iterable<?>` | `configure(Iterable<?> objects, groovy.lang.Closure configureClosure)` Configures a collection of objects via a closure.
    `Iterable<T>` | `configure(Iterable<T> objects, Action<? super T> configureAction)` Configures a collection of objects via an action.
    `NamedDomainObjectContainer<T>` | `container(Class<T> type)`
    `NamedDomainObjectContainer<T>` | `container(Class<T> type, NamedDomainObjectFactory<T> factory)`
    `NamedDomainObjectContainer<T>` | `container(Class<T> type, groovy.lang.Closure factoryClosure)`
    `WorkResult` | `copy(groovy.lang.Closure closure)` Copies the specified files.
    `WorkResult` | `copy(Action<? super CopySpec> action)` Copies the specified files.
    `CopySpec` | `copySpec(groovy.lang.Closure closure)` Creates a CopySpec which can later be used to copy files or create an archive.
    `CopySpec` | `copySpec(Action<? super CopySpec> action)` Creates a CopySpec which can later be used to copy files or create an archive.
    `CopySpec` | `copySpec()` Creates a CopySpec which can later be used to copy files or create an archive.
    `AntBuilder` | `createAntBuilder()`
    `void` | `defaultTasks(String... defaultTasks)`
    `boolean` | `delete(Object... paths)` Deletes files and directories.
    `WorkResult` | `delete(Action<? super DeleteSpec> action)` Deletes the specified files.
    `void` | `dependencies(groovy.lang.Closure configureClosure)`
    `int` | `depthCompare(Project otherProject)`
    `Project` | `evaluationDependsOn(String path)`
    `void` | `evaluationDependsOnChildren()`
    `ExecResult` | `exec(groovy.lang.Closure closure)` Executes an external command.
    `ExecResult` | `exec(Action<? super ExecSpec> action)` Executes an external command.
    `File` | `file(Object path)`
    `File` | `file(Object path, PathValidation validation)`
    `ConfigurableFileTree` | `fileTree(Object baseDir)`
    `ConfigurableFileTree` | `fileTree(Object baseDir, groovy.lang.Closure configureClosure)`
    `ConfigurableFileTree` | `fileTree(Map<String, ?> args)`
    `ConfigurableFileCollection` | `files(Object... paths)`
    `ConfigurableFileCollection` | `files(Object paths, groovy.lang.Closure configureClosure)`
    `Project` | `findProject(String path)`
    `Object` | `findProperty(String propertyName)`
    `Map<Project, Set<Task>>` | `getAllTasks(boolean recursive)`
    `Set<Project>` | `getAllprojects()`
    `AntBuilder` | `getAnt()`
    `ArtifactHandler` | `getArtifacts()` Returns a handler for assigning artifacts produced by the project to configurations.
    `File` | `getBuildDir()`
    `File` | `getBuildFile()`
    `ScriptHandler` | `getBuildscript()` Returns the build script handler for this project.
    `Map<String, Project>` | `getChildProjects()`
    `SoftwareComponentContainer` | `getComponents()` Returns the software components produced by this project.
    `ConfigurationContainer` | `getConfigurations()` Returns the configurations of this project.
    `Convention` | `getConvention()`
    `List<String>` | `getDefaultTasks()`
    `DependencyHandler` | `getDependencies()` Returns the dependency handler of this project.
    `int` | `getDepth()`
    `String` | `getDescription()` Returns the description of this project.
    `ExtensionContainer` | `getExtensions()` Allows adding DSL extensions to the project.
    `Gradle` | `getGradle()`
    `Object` | `getGroup()`
    `Logger` | `getLogger()`
    `LoggingManager` | `getLogging()` Returns the LoggingManager which can be used to control the logging level and standard output/error capture for this project's build script.
    `String` | `getName()`
    `Project` | `getParent()`
    `String` | `getPath()`
    `Project` | `getProject()`
    `File` | `getProjectDir()`
    `Map<String, ?>` | `getProperties()`
    `RepositoryHandler` | `getRepositories()` Returns a handler to create repositories which are used for retrieving dependencies and uploading artifacts produced by the project.
    `ResourceHandler` | `getResources()` Provides access to resource-specific utility methods, for example factory methods that create various resources.
    `File` | `getRootDir()`
    `Project` | `getRootProject()`
    `ProjectState` | `getState()` Returns the evaluation state of this project.
    `Object` | `getStatus()`
    `Set<Project>` | `getSubprojects()`
    `TaskContainer` | `getTasks()`
    `Set<Task>` | `getTasksByName(String name, boolean recursive)`
    `Object` | `getVersion()`
    `boolean` | `hasProperty(String propertyName)`
    `ExecResult` | `javaexec(groovy.lang.Closure closure)` Executes a Java main class.
    `ExecResult` | `javaexec(Action<? super JavaExecSpec> action)` Executes an external Java process.
    `File` | `mkdir(Object path)` Creates a directory and returns a file pointing to it.
    `Project` | `project(String path)`
    `Project` | `project(String path, groovy.lang.Closure configureClosure)`
    `Object` | `property(String propertyName)`
    `String` | `relativePath(Object path)`
    `String` | `relativeProjectPath(String path)`
    `void` | `repositories(groovy.lang.Closure configureClosure)`
    `void` | `setBuildDir(Object path)`
    `void` | `setDefaultTasks(List<String> defaultTasks)`
    `void` | `setDescription(String description)` Sets a description for this project.
    `void` | `setGroup(Object group)`
    `void` | `setProperty(String name, Object value)`
    `void` | `setStatus(Object status)` Sets the status of this project.
    `void` | `setVersion(Object version)`
    `void` | `subprojects(Action<? super Project> action)`
    `void` | `subprojects(groovy.lang.Closure configureClosure)`
    `FileTree` | `tarTree(Object tarPath)` Creates a new `FileTree` which contains the contents of the given TAR file.
    `Task` | `task(String name)`
    `Task` | `task(Map<String, ?> args, String name)`
    `Task` | `task(Map<String, ?> args, String name, groovy.lang.Closure configureClosure)`
    `Task` | `task(String name, groovy.lang.Closure configureClosure)`
    `URI` | `uri(Object path)`
    `FileTree` | `zipTree(Object zipPath)`

  - ### Inherited Methods Summary

    Inherited Methods
    Methods inherited from class | Name
    --- | ---
    `interface Comparable` | `compareTo`
    `interface ExtensionAware` | `getExtensions`
    `interface PluginAware` | `apply, apply, apply, getPluginManager, getPlugins`

- - ### Field Detail

    - #### public static final String DEFAULT_BUILD_DIR_NAME

      The default build directory name.

    - #### public static final String DEFAULT_BUILD_FILE

      The default project build file name.

    - #### public static final String DEFAULT_STATUS

    - #### public static final String DEFAULT_VERSION

    - #### public static final String GRADLE_PROPERTIES

    - #### public static final String PATH_SEPARATOR

      The hierarchy separator for project and task path names.

    - #### public static final String SYSTEM_PROP_PREFIX

  - ### Method Detail

    - #### public String absoluteProjectPath(String path)

      Converts a name to an absolute project path, resolving names relative to this project.

      Parameters:
        `path` - The path to convert.
      Returns:
        The absolute path.

    - #### public void afterEvaluate(Action<? super Project> action)

      Adds an action to execute immediately after this project is evaluated.

      Parameters:
        `action` - the action to execute.

    - #### public void afterEvaluate(groovy.lang.Closure closure)

      Adds a closure to be called immediately after this project has been evaluated. The project is passed to the closure as a parameter. Such a listener gets notified when the build file belonging to this project has been executed. A parent project may for example add such a listener to its child project. Such a listener can further configure those child projects based on the state of the child projects after their build files have been run.

      Parameters:
        `closure` - The closure to call.

    - #### public void allprojects(Action<? super Project> action)

      Configures this project and each of its sub-projects.

      This method executes the given Action against this project and each of its sub-projects.

      Parameters:
        `action` - The action to execute.

    - #### public void allprojects(groovy.lang.Closure configureClosure)

      Configures this project and each of its sub-projects.

      This method executes the given closure against this project and its sub-projects. The target Project is passed to the closure as the closure's delegate.

      Parameters:
        `configureClosure` - The closure to execute.

    - #### public AntBuilder ant(groovy.lang.Closure configureClosure)

      Executes the given closure against the `AntBuilder` for this project. You can use this in your build file to execute ant tasks. The `AntBuild` is passed to the closure as the closure's delegate. See example in javadoc for getAnt()

      Parameters:
        `configureClosure` - The closure to execute against the `AntBuilder`.
      Returns:
        The `AntBuilder`. Never returns null.

    - #### public void artifacts(groovy.lang.Closure configureClosure)

      Configures the published artifacts for this project.

      This method executes the given closure against the ArtifactHandler for this project. The ArtifactHandler is passed to the closure as the closure's delegate.

      Example:

           configurations {
             //declaring new configuration that will be used to associate with artifacts
             schema
           }

           task schemaJar(type: Jar) {
             //some imaginary task that creates a jar artifact with the schema
           }

           //associating the task that produces the artifact with the configuration
           artifacts {
             //configuration name and the task:
             schema schemaJar
           }

      Parameters:
        `configureClosure` - the closure to use to configure the published artifacts.

    - #### public void beforeEvaluate(Action<? super Project> action)

      Adds an action to execute immediately before this project is evaluated.

      Parameters:
        `action` - the action to execute.

    - #### public void beforeEvaluate(groovy.lang.Closure closure)

      Adds a closure to be called immediately before this project is evaluated. The project is passed to the closure as a parameter.

      Parameters:
        `closure` - The closure to call.

    - #### public void buildscript(groovy.lang.Closure configureClosure)

      Configures the build script classpath for this project.

      The given closure is executed against this project's ScriptHandler. The ScriptHandler is passed to the closure as the closure's delegate.

      Parameters:
        `configureClosure` - the closure to use to configure the build script classpath.

    - #### public void configurations(groovy.lang.Closure configureClosure)

      Configures the dependency configurations for this project.

      This method executes the given closure against the ConfigurationContainer for this project. The ConfigurationContainer is passed to the closure as the closure's delegate.

      ### Examples:

      See docs for ConfigurationContainer
      Parameters:
        `configureClosure` - the closure to use to configure the dependency configurations.

    - #### public Object configure(Object object, groovy.lang.Closure configureClosure)

      Configures an object via a closure, with the closure's delegate set to the supplied object. This way you don't have to specify the context of a configuration statement multiple times.

      Instead of:

           MyType myType = new MyType()
           myType.doThis()
           myType.doThat()

      you can do:

           MyType myType = configure(new MyType()) {
               doThis()
               doThat()
           }

      The object being configured is also passed to the closure as a parameter, so you can access it explicitly if required:

           configure(someObj) { obj -> obj.doThis() }

      Parameters:
        `object` - The object to configure
        `configureClosure` - The closure with configure statements
      Returns:
        The configured object

    - #### public Iterable<?> configure(Iterable<?> objects, groovy.lang.Closure configureClosure)

      Configures a collection of objects via a closure. This is equivalent to calling configure for each of the given objects.

      Parameters:
        `objects` - The objects to configure
        `configureClosure` - The closure with configure statements
      Returns:
        The configured objects.

    - #### public Iterable<T> configure(Iterable<T> objects, Action<? super T> configureAction)

      Configures a collection of objects via an action.

      Parameters:
        `objects` - The objects to configure
        `configureAction` - The action to apply to each object
      Returns:
        The configured objects.

    - #### public NamedDomainObjectContainer<T> container(Class<T> type)

      Creates a container for managing named objects of the specified type. The specified type must have a public constructor which takes the name as a String parameter.

      All objects MUST expose their name as a bean property named "name". The name must be constant for the life of the object.

      Parameters:
        `type` - The type of objects for the container to contain.
        `` - The type of objects for the container to contain.
      Returns:
        The container.

    - #### public NamedDomainObjectContainer<T> container(Class<T> type, NamedDomainObjectFactory<T> factory)

      Creates a container for managing named objects of the specified type. The given factory is used to create object instances.

      All objects MUST expose their name as a bean property named "name". The name must be constant for the life of the object.

      Parameters:
        `type` - The type of objects for the container to contain.
        `factory` - The factory to use to create object instances.
        `` - The type of objects for the container to contain.
      Returns:
        The container.

    - #### public NamedDomainObjectContainer<T> container(Class<T> type, groovy.lang.Closure factoryClosure)

      Creates a container for managing named objects of the specified type. The given closure is used to create object instances. The name of the instance to be created is passed as a parameter to the closure.

      All objects MUST expose their name as a bean property named "name". The name must be constant for the life of the object.

      Parameters:
        `type` - The type of objects for the container to contain.
        `factoryClosure` - The closure to use to create object instances.
        `` - The type of objects for the container to contain.
      Returns:
        The container.

    - #### public WorkResult copy(groovy.lang.Closure closure)

      Copies the specified files. The given closure is used to configure a CopySpec, which is then used to copy the files. Example:

           copy {
              from configurations.runtime
              into 'build/deploy/lib'
           }

      Note that CopySpecs can be nested:

           copy {
              into 'build/webroot'
              exclude '**/.svn/**'
              from('src/main/webapp') {
                 include '**/*.jsp'
                 filter(ReplaceTokens, tokens:[copyright:'2009', version:'2.3.1'])
              }
              from('src/main/js') {
                 include '**/*.js'
              }
           }

      Parameters:
        `closure` - Closure to configure the CopySpec
      Returns:
        WorkResult that can be used to check if the copy did any work.

    - #### public WorkResult copy(Action<? super CopySpec> action)

      Copies the specified files. The given action is used to configure a CopySpec, which is then used to copy the files.

      Parameters:
        `action` - Action to configure the CopySpec
      Returns:
        WorkResult that can be used to check if the copy did any work.
      See Also:
        copy(Closure)

    - #### public CopySpec copySpec(groovy.lang.Closure closure)

      Creates a CopySpec which can later be used to copy files or create an archive. The given closure is used to configure the CopySpec before it is returned by this method.

           def baseSpec = copySpec {
              from "source"
              include "**/*.java"
           }

           task copy(type: Copy) {
              into "target"
              with baseSpec
           }

      Parameters:
        `closure` - Closure to configure the CopySpec
      Returns:
        The CopySpec

    - #### public CopySpec copySpec(Action<? super CopySpec> action)

      Creates a CopySpec which can later be used to copy files or create an archive. The given action is used to configure the CopySpec before it is returned by this method.

      Parameters:
        `action` - Action to configure the CopySpec
      Returns:
        The CopySpec
      See Also:
        copySpec(Closure)

    - #### public CopySpec copySpec()

      Creates a CopySpec which can later be used to copy files or create an archive.

      Returns:
        a newly created copy spec

    - #### public AntBuilder createAntBuilder()

      Creates an additional `AntBuilder` for this project. You can use this in your build file to execute ant tasks.

      Returns:
        Creates an `AntBuilder` for this project. Never returns null.
      See Also:
        getAnt()

    - #### public void defaultTasks(String... defaultTasks)

      Sets the names of the default tasks of this project. These are used when no tasks names are provided when starting the build.

      Parameters:
        `defaultTasks` - The default task names.

    - #### public boolean delete(Object... paths)

      Deletes files and directories.

      This will not follow symlinks. If you need to follow symlinks too use delete(Action).

      Parameters:
        `paths` - Any type of object accepted by Project.files
      Returns:
        true if anything got deleted, false otherwise

    - #### public WorkResult delete(Action<? super DeleteSpec> action)

      Deletes the specified files. The given action is used to configure a DeleteSpec, which is then used to delete the files.

      Example:

           project.delete {
               delete 'somefile'
               followSymlinks = true
           }

      Parameters:
        `action` - Action to configure the DeleteSpec
      Returns:
        WorkResult that can be used to check if delete did any work.

    - #### public void dependencies(groovy.lang.Closure configureClosure)

      Configures the dependencies for this project.

      This method executes the given closure against the DependencyHandler for this project. The DependencyHandler is passed to the closure as the closure's delegate.

      ### Examples:

      See docs for DependencyHandler
      Parameters:
        `configureClosure` - the closure to use to configure the dependencies.

    - #### public int depthCompare(Project otherProject)

      Compares the nesting level of this project with another project of the multi-project hierarchy.

      Parameters:
        `otherProject` - The project to compare the nesting level with.
      Returns:
        a negative integer, zero, or a positive integer as this project has a nesting level less than, equal to, or greater than the specified object.
      See Also:
        getDepth()

    - #### public Project evaluationDependsOn(String path)

      Declares that this project has an evaluation dependency on the project with the given path.

      throws:
        UnknownProjectException If no project with the given path exists.
      Parameters:
        `path` - The path of the project which this project depends on.
      Returns:
        The project which this project depends on.

    - #### public void evaluationDependsOnChildren()

      Declares that this project has an evaluation dependency on each of its child projects.

    - #### public ExecResult exec(groovy.lang.Closure closure)

      Executes an external command. The closure configures a ExecSpec.

      Parameters:
        `closure` - The closure for configuring the execution.
      Returns:
        the result of the execution

    - #### public ExecResult exec(Action<? super ExecSpec> action)

      Executes an external command.

      The given action configures a ExecSpec, which is used to launch the process. This method blocks until the process terminates, with its result being returned.

      Parameters:
        `action` - The action for configuring the execution.
      Returns:
        the result of the execution

    - #### public File file(Object path)

      Resolves a file path relative to the project directory of this project. This method converts the supplied path based on its type:

      - A CharSequence, including String or groovy.lang.GString. Interpreted relative to the project directory. A string that starts with `file:` is treated as a file URL.
      - A File. If the file is an absolute file, it is returned as is. Otherwise, the file's path is interpreted relative to the project directory.
      - A URI or URL. The URL's path is interpreted as the file path. Currently, only `file:` URLs are supported.
      - A groovy.lang.Closure. The closure's return value is resolved recursively.
      - A Callable. The callable's return value is resolved recursively.
      Parameters:
        `path` - The object to resolve as a File.
      Returns:
        The resolved file. Never returns null.

    - #### public File file(Object path, PathValidation validation)

      Resolves a file path relative to the project directory of this project and validates it using the given scheme. See PathValidation for the list of possible validations.

      throws:
        InvalidUserDataException When the file does not meet the given validation constraint.
      Parameters:
        `path` - An object which toString method value is interpreted as a relative path to the project directory.
        `validation` - The validation to perform on the file.
      Returns:
        The resolved file. Never returns null.

    - #### public ConfigurableFileTree fileTree(Object baseDir)

      Creates a new `ConfigurableFileTree` using the given base directory. The given baseDir path is evaluated as per file(Object).

      The returned file tree is lazy, so that it scans for files only when the contents of the file tree are queried. The file tree is also live, so that it scans for files each time the contents of the file tree are queried.

           def myTree = fileTree("src")
           myTree.include "**/*.java"
           myTree.builtBy "someTask"

           task copy(type: Copy) {
              from myTree
           }

      Parameters:
        `baseDir` - The base directory of the file tree. Evaluated as per file(Object).
      Returns:
        the file tree. Never returns null.

    - #### public ConfigurableFileTree fileTree(Object baseDir, groovy.lang.Closure configureClosure)

      Creates a new `ConfigurableFileTree` using the given base directory. The given baseDir path is evaluated as per file(Object). The closure will be used to configure the new file tree. The file tree is passed to the closure as its delegate. Example:

           def myTree = fileTree('src') {
              exclude '**/.data/**'
              builtBy 'someTask'
           }

           task copy(type: Copy) {
              from myTree
           }

      The returned file tree is lazy, so that it scans for files only when the contents of the file tree are queried. The file tree is also live, so that it scans for files each time the contents of the file tree are queried.

      Parameters:
        `baseDir` - The base directory of the file tree. Evaluated as per file(Object).
        `configureClosure` - Closure to configure the `ConfigurableFileTree` object.
      Returns:
        the configured file tree. Never returns null.

    - #### public ConfigurableFileTree fileTree(Map<String, ?> args)

      Creates a new `ConfigurableFileTree` using the provided map of arguments. The map will be applied as properties on the new file tree. Example:

           def myTree = fileTree(dir:'src', excludes:['**/ignore/**', '**/.data/**'])

           task copy(type: Copy) {
               from myTree
           }

      The returned file tree is lazy, so that it scans for files only when the contents of the file tree are queried. The file tree is also live, so that it scans for files each time the contents of the file tree are queried.

      Parameters:
        `args` - map of property assignments to `ConfigurableFileTree` object
      Returns:
        the configured file tree. Never returns null.

    - #### public ConfigurableFileCollection files(Object... paths)

      Returns a ConfigurableFileCollection containing the given files. You can pass any of the following types to this method:

      - A CharSequence, including String or groovy.lang.GString. Interpreted relative to the project directory, as per file(Object). A string that starts with `file:` is treated as a file URL.
      - A File. Interpreted relative to the project directory, as per file(Object).
      - A URI or URL. The URL's path is interpreted as a file path. Currently, only `file:` URLs are supported.
      - A Collection, Iterable, or an array. May contain any of the types listed here. The elements of the collection are recursively converted to files.
      - A FileCollection. The contents of the collection are included in the returned collection.
      - A Callable. The `call()` method may return any of the types listed here. The return value of the `call()` method is recursively converted to files. A `null` return value is treated as an empty collection.
      - A Closure. May return any of the types listed here. The return value of the closure is recursively converted to files. A `null` return value is treated as an empty collection.
      - A Task. Converted to the task's output files.
      - A TaskOutputs. Converted to the output files the related task.
      - An Object. Its `toString()` value is treated the same way as a String, as per file(Object). This has been deprecated and will be removed in the next version of Gradle.

      The returned file collection is lazy, so that the paths are evaluated only when the contents of the file collection are queried. The file collection is also live, so that it evaluates the above each time the contents of the collection is queried.

      The returned file collection maintains the iteration order of the supplied paths.

      Parameters:
        `paths` - The paths to the files. May be empty.
      Returns:
        The file collection. Never returns null.

    - #### public ConfigurableFileCollection files(Object paths, groovy.lang.Closure configureClosure)

      Creates a new `ConfigurableFileCollection` using the given paths. The paths are evaluated as per files(Object...). The file collection is configured using the given closure. The file collection is passed to the closure as its delegate. Example:

           files "$buildDir/classes" {
               builtBy 'compile'
           }

      The returned file collection is lazy, so that the paths are evaluated only when the contents of the file collection are queried. The file collection is also live, so that it evaluates the above each time the contents of the collection is queried.

      Parameters:
        `paths` - The contents of the file collection. Evaluated as per files(Object...).
        `configureClosure` - The closure to use to configure the file collection.
      Returns:
        the configured file tree. Never returns null.

    - #### public Project findProject(String path)

      Locates a project by path. If the path is relative, it is interpreted relative to this project.

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

    - #### @Incubating public Object findProperty(String propertyName)

      Returns the value of the given property or null if not found. This method locates a property as follows:

      1. If this project object has a property with the given name, return the value of the property.
      2. If this project has an extension with the given name, return the extension.
      3. If this project's convention object has a property with the given name, return the value of the property.
      4. If this project has an extra property with the given name, return the value of the property.
      5. If this project has a task with the given name, return the task.
      6. Search up through this project's ancestor projects for a convention property or extra property with the given name.
      7. If not found, null value is returned.
      Parameters:
        `propertyName` - The name of the property.
      Returns:
        The value of the property, possibly null or null if not found.
      See Also:
        Project.property

    - #### public Map<Project, Set<Task>> getAllTasks(boolean recursive)

      Returns a map of the tasks contained in this project, and optionally its subprojects.

      Parameters:
        `recursive` - If true, returns the tasks of this project and its subprojects. If false, returns the tasks of just this project.
      Returns:
        A map from project to a set of tasks.

    - #### public Set<Project> getAllprojects()

      Returns the set containing this project and its subprojects.

      Returns:
        The set of projects.

    - #### public AntBuilder getAnt()

      Returns the `AntBuilder` for this project. You can use this in your build file to execute ant tasks. See example below.

           task printChecksum {
             doLast {
               ant {
                 //using ant checksum task to store the file checksum in the checksumOut ant property
                 checksum(property: 'checksumOut', file: 'someFile.txt')

                 //we can refer to the ant property created by checksum task:
                 println "The checksum is: " + checksumOut
               }

               //we can refer to the ant property later as well:
               println "I just love to print checksums: " + ant.checksumOut
             }
           }

      Consider following example of ant target:

           <target name='printChecksum'>
             <checksum property='checksumOut'>
               <fileset dir='.'>
                 <include name='agile.txt'/>
               </fileset>
             </checksum>
             <echo>The checksum is: ${checksumOut}</echo>
           </target>

      Here's how it would look like in gradle. Observe how the ant XML is represented in groovy by the ant builder

           task printChecksum {
             doLast {
               ant {
                 checksum(property: 'checksumOut') {
                   fileset(dir: '.') {
                     include name: 'agile1.txt'
                   }
                 }
               }
               logger.lifecycle("The checksum is $ant.checksumOut")
             }
           }

      Returns:
        The `AntBuilder` for this project. Never returns null.

    - #### public ArtifactHandler getArtifacts()

      Returns a handler for assigning artifacts produced by the project to configurations.

      ### Examples:

      See docs for ArtifactHandler

    - #### public File getBuildDir()

      Returns the build directory of this project. The build directory is the directory which all artifacts are generated into. The default value for the build directory is `projectDir/build`

      Returns:
        The build directory. Never returns null.

    - #### public File getBuildFile()

      Returns the build file Gradle will evaluate against this project object. The default is `{`

      value:
        #DEFAULT_BUILD_FILE}. If an embedded script is provided the build file will be null.
      Returns:
        Current build file. May return null.

    - #### public ScriptHandler getBuildscript()

      Returns the build script handler for this project. You can use this handler to query details about the build script for this project, and manage the classpath used to compile and execute the project's build script.

      Returns:
        the classpath handler. Never returns null.

    - #### public Map<String, Project> getChildProjects()

      Returns the direct children of this project.

      Returns:
        A map from child project name to child project. Returns an empty map if this project does not have any children.

    - #### @Incubating public SoftwareComponentContainer getComponents()

      Returns the software components produced by this project.

      Returns:
        The components for this project.

    - #### public ConfigurationContainer getConfigurations()

      Returns the configurations of this project.

      ### Examples:

      See docs for ConfigurationContainer
      Returns:
        The configuration of this project.

    - #### public Convention getConvention()

      Returns the Convention for this project.

      You can access this property in your build file using `convention`. You can also can also access the properties and methods of the convention object as if they were properties and methods of this project. See here for more details

      Returns:
        The `Convention`. Never returns null.

    - #### public List<String> getDefaultTasks()

      Returns the names of the default tasks of this project. These are used when no tasks names are provided when starting the build.

      Returns:
        The default task names. Returns an empty list if this project has no default tasks.

    - #### public DependencyHandler getDependencies()

      Returns the dependency handler of this project. The returned dependency handler instance can be used for adding new dependencies. For accessing already declared dependencies, the configurations can be used.

      ### Examples:

      See docs for DependencyHandler
      Returns:
        the dependency handler. Never returns null.
      See Also:
        getConfigurations()

    - #### public int getDepth()

      Returns the nesting level of a project in a multi-project hierarchy. For single project builds this is always 0. In a multi-project hierarchy 0 is returned for the root project.

    - #### public String getDescription()

      Returns the description of this project.

      Returns:
        the description. May return null.

    - #### public ExtensionContainer getExtensions()

      Allows adding DSL extensions to the project. Useful for plugin authors.

      Returns:
        Returned instance allows adding DSL extensions to the project

    - #### public Gradle getGradle()

      Returns the Gradle invocation which this project belongs to.

      Returns:
        The Gradle object. Never returns null.

    - #### public Object getGroup()

      Returns the group of this project. Gradle always uses the `toString()` value of the group. The group defaults to the path with dots as separators.

      Returns:
        The group of this project. Never returns null.

    - #### public Logger getLogger()

      Returns the logger for this project. You can use this in your build file to write log messages.

      Returns:
        The logger. Never returns null.

    - #### public LoggingManager getLogging()

      Returns the LoggingManager which can be used to control the logging level and standard output/error capture for this project's build script. By default, System.out is redirected to the Gradle logging system at the QUIET log level, and System.err is redirected at the ERROR log level.

      Returns:
        the LoggingManager. Never returns null.

    - #### public String getName()

      Returns the name of this project. The project's name is not necessarily unique within a project hierarchy. You should use the getPath() method for a unique identifier for the project.

      Returns:
        The name of this project. Never return null.

    - #### public Project getParent()

      Returns the parent project of this project, if any.

      Returns:
        The parent project, or null if this is the root project.

    - #### public String getPath()

      Returns the path of this project. The path is the fully qualified name of the project.

      Returns:
        The path. Never returns null.

    - #### public Project getProject()

      Returns this project. This method is useful in build files to explicitly access project properties and methods. For example, using `project.name` can express your intent better than using `name`. This method also allows you to access project properties from a scope where the property may be hidden, such as, for example, from a method or closure.

      Returns:
        This project. Never returns null.

    - #### public File getProjectDir()

      The directory containing the project build file.

      Returns:
        The project directory. Never returns null.

    - #### public Map<String, ?> getProperties()

      Returns the properties of this project. See here for details of the properties which are available for a project.

      Returns:
        A map from property name to value.

    - #### public RepositoryHandler getRepositories()

      Returns a handler to create repositories which are used for retrieving dependencies and uploading artifacts produced by the project.

      Returns:
        the repository handler. Never returns null.

    - #### public ResourceHandler getResources()

      Provides access to resource-specific utility methods, for example factory methods that create various resources.

      Returns:
        Returned instance contains various resource-specific utility methods.

    - #### public File getRootDir()

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

      Returns:
        The root directory. Never returns null.

    - #### public Project getRootProject()

      Returns the root project for the hierarchy that this project belongs to. In the case of a single-project build, this method returns this project.

      Returns:
        The root project. Never returns null.

    - #### public ProjectState getState()

      Returns the evaluation state of this project. You can use this to access information about the evaluation of this project, such as whether it has failed.

      Returns:
        the project state. Never returns null.

    - #### public Object getStatus()

      Returns the status of this project. Gradle always uses the `toString()` value of the status. The status defaults to {

      value:
        #DEFAULT_STATUS}.

        The status of the project is only relevant, if you upload libraries together with a module descriptor. The status specified here, will be part of this module descriptor.

      Returns:
        The status of this project. Never returns null.

    - #### public Set<Project> getSubprojects()

      Returns the set containing the subprojects of this project.

      Returns:
        The set of projects. Returns an empty set if this project has no subprojects.

    - #### public TaskContainer getTasks()

      Returns the tasks of this project.

      Returns:
        the tasks of this project.

    - #### public Set<Task> getTasksByName(String name, boolean recursive)

      Returns the set of tasks with the given name contained in this project, and optionally its subprojects.

      Parameters:
        `name` - The name of the task to locate.
        `recursive` - If true, returns the tasks of this project and its subprojects. If false, returns the tasks of just this project.
      Returns:
        The set of tasks. Returns an empty set if no such tasks exist in this project.

    - #### public Object getVersion()

      Returns the version of this project. Gradle always uses the `toString()` value of the version. The version defaults to {

      value:
        #DEFAULT_VERSION}.
      Returns:
        The version of this project. Never returns null.

    - #### public boolean hasProperty(String propertyName)

      Determines if this project has the given property. See here for details of the properties which are available for a project.

      Parameters:
        `propertyName` - The name of the property to locate.
      Returns:
        True if this project has the given property, false otherwise.

    - #### public ExecResult javaexec(groovy.lang.Closure closure)

      Executes a Java main class. The closure configures a JavaExecSpec.

      Parameters:
        `closure` - The closure for configuring the execution.
      Returns:
        the result of the execution

    - #### public ExecResult javaexec(Action<? super JavaExecSpec> action)

      Executes an external Java process.

      The given action configures a JavaExecSpec, which is used to launch the process. This method blocks until the process terminates, with its result being returned.

      Parameters:
        `action` - The action for configuring the execution.
      Returns:
        the result of the execution

    - #### public File mkdir(Object path)

      Creates a directory and returns a file pointing to it.

      throws:
        org.gradle.api.InvalidUserDataException If the path points to an existing file.
      Parameters:
        `path` - The path for the directory to be created. Evaluated as per file(Object).
      Returns:
        the created directory

    - #### public Project project(String path)

      Locates a project by path. If the path is relative, it is interpreted relative to this project.

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

    - #### public Project project(String path, groovy.lang.Closure configureClosure)

      Locates a project by path and configures it using the given closure. If the path is relative, it is interpreted relative to this project. The target project is passed to the closure as the closure's delegate.

      throws:
        UnknownProjectException If no project with the given path exists.
      Parameters:
        `path` - The path.
        `configureClosure` - The closure to use to configure the project.
      Returns:
        The project with the given path. Never returns null.

    - #### public Object property(String propertyName)

      Returns the value of the given property. This method locates a property as follows:

      1. If this project object has a property with the given name, return the value of the property.
      2. If this project has an extension with the given name, return the extension.
      3. If this project's convention object has a property with the given name, return the value of the property.
      4. If this project has an extra property with the given name, return the value of the property.
      5. If this project has a task with the given name, return the task.
      6. Search up through this project's ancestor projects for a convention property or extra property with the given name.
      7. If not found, a groovy.lang.MissingPropertyException is thrown.
      throws:
        MissingPropertyException When the given property is unknown.
      Parameters:
        `propertyName` - The name of the property.
      Returns:
        The value of the property, possibly null.
      See Also:
        Project.findProperty

    - #### public String relativePath(Object path)

      Returns the relative path from the project directory to the given path. The given path object is (logically) resolved as described for file(Object), from which a relative path is calculated.

      Parameters:
        `path` - The path to convert to a relative path.
      Returns:
        The relative path. Never returns null.

    - #### public String relativeProjectPath(String path)

      Converts a name to a project path relative to this project.

      Parameters:
        `path` - The path to convert.
      Returns:
        The relative path.

    - #### public void repositories(groovy.lang.Closure configureClosure)

      Configures the repositories for this project.

      This method executes the given closure against the RepositoryHandler for this project. The RepositoryHandler is passed to the closure as the closure's delegate.

      Parameters:
        `configureClosure` - the closure to use to configure the repositories.

    - #### public void setBuildDir(Object path)

      Sets the build directory of this project. The build directory is the directory which all artifacts are generated into. The path parameter is evaluated as described for file(Object). This mean you can use, amongst other things, a relative or absolute path or File object to specify the build directory.

      Parameters:
        `path` - The build directory. This is evaluated as per file(Object)

    - #### public void setDefaultTasks(List<String> defaultTasks)

      Sets the names of the default tasks of this project. These are used when no tasks names are provided when starting the build.

      Parameters:
        `defaultTasks` - The default task names.

    - #### public void setDescription(String description)

      Sets a description for this project.

      Parameters:
        `description` - The description of the project. Might be null.

    - #### public void setGroup(Object group)

      Sets the group of this project.

      Parameters:
        `group` - The group of this project. Must not be null.

    - #### public void setProperty(String name, Object value)

      Sets a property of this project. This method searches for a property with the given name in the following locations, and sets the property on the first location where it finds the property.

      1. The project object itself. For example, the `rootDir` project property.
      2. The project's Convention object. For example, the `srcRootName` java plugin property.
      3. The project's extra properties.
      If the property is not found, a groovy.lang.MissingPropertyException is thrown.
      Parameters:
        `name` - The name of the property
        `value` - The value of the property

    - #### public void setStatus(Object status)

      Sets the status of this project.

      Parameters:
        `status` - The status. Must not be null.

    - #### public void setVersion(Object version)

      Sets the version of this project.

      Parameters:
        `version` - The version of this project. Must not be null.

    - #### public void subprojects(Action<? super Project> action)

      Configures the sub-projects of this project

      This method executes the given Action against the sub-projects of this project.

      Parameters:
        `action` - The action to execute.

    - #### public void subprojects(groovy.lang.Closure configureClosure)

      Configures the sub-projects of this project.

      This method executes the given closure against each of the sub-projects of this project. The target Project is passed to the closure as the closure's delegate.

      Parameters:
        `configureClosure` - The closure to execute.

    - #### public FileTree tarTree(Object tarPath)

      Creates a new `FileTree` which contains the contents of the given TAR file. The given tarPath path can be:

      - an instance of Resource
      - any other object is evaluated as per file(Object)
      The returned file tree is lazy, so that it scans for files only when the contents of the file tree are queried. The file tree is also live, so that it scans for files each time the contents of the file tree are queried.

      Unless custom implementation of resources is passed, the tar tree attempts to guess the compression based on the file extension.

      You can combine this method with the copy(groovy.lang.Closure) method to untar a TAR file:

           task untar(type: Copy) {
             from tarTree('someCompressedTar.gzip')

             //tar tree attempts to guess the compression based on the file extension
             //however if you must specify the compression explicitly you can:
             from tarTree(resources.gzip('someTar.ext'))

             //in case you work with unconventionally compressed tars
             //you can provide your own implementation of a ReadableResource:
             //from tarTree(yourOwnResource as ReadableResource)

             into 'dest'
           }

      Parameters:
        `tarPath` - The TAR file or an instance of Resource.
      Returns:
        the file tree. Never returns null.

    - #### public Task task(String name)

      Creates a Task with the given name and adds it to this project. Calling this method is equivalent to calling task(java.util.Map, String) with an empty options map.

      After the task is added to the project, it is made available as a property of the project, so that you can reference the task by name in your build file. See here for more details

      If a task with the given name already exists in this project, an exception is thrown.

      throws:
        InvalidUserDataException If a task with the given name already exists in this project.
      Parameters:
        `name` - The name of the task to be created
      Returns:
        The newly created task object

    - #### public Task task(Map<String, ?> args, String name)

      Creates a Task with the given name and adds it to this project. A map of creation options can be passed to this method to control how the task is created. The following options are available:

      Option | Description | Default Value
      --- | --- | ---
      `{ value: org.gradle.api.Task#TASK_TYPE}` | The class of the task to create. | DefaultTask
      `{@value org.gradle.api.Task#TASK_OVERWRITE}` | Replace an existing task? | `false`
      `{@value org.gradle.api.Task#TASK_DEPENDS_ON}` | A task name or set of task names which this task depends on | `[]`
      `{@value org.gradle.api.Task#TASK_ACTION}` | A closure or Action to add to the task. | `null`
      `{@value org.gradle.api.Task#TASK_DESCRIPTION}` | A description of the task. | `null`
      `{@value org.gradle.api.Task#TASK_GROUP}` | A task group which this task belongs to. | `null`

      After the task is added to the project, it is made available as a property of the project, so that you can reference the task by name in your build file. See here for more details

      If a task with the given name already exists in this project and the `override` option is not set to true, an exception is thrown.

      throws:
        InvalidUserDataException If a task with the given name already exists in this project.
      Parameters:
        `args` - The task creation options.
        `name` - The name of the task to be created
      Returns:
        The newly created task object

    - #### public Task task(Map<String, ?> args, String name, groovy.lang.Closure configureClosure)

      Creates a Task with the given name and adds it to this project. Before the task is returned, the given closure is executed to configure the task. A map of creation options can be passed to this method to control how the task is created. See task(java.util.Map, String) for the available options.

      After the task is added to the project, it is made available as a property of the project, so that you can reference the task by name in your build file. See here for more details

      If a task with the given name already exists in this project and the `override` option is not set to true, an exception is thrown.

      throws:
        InvalidUserDataException If a task with the given name already exists in this project.
      Parameters:
        `args` - The task creation options.
        `name` - The name of the task to be created
        `configureClosure` - The closure to use to configure the created task.
      Returns:
        The newly created task object

    - #### public Task task(String name, groovy.lang.Closure configureClosure)

      Creates a Task with the given name and adds it to this project. Before the task is returned, the given closure is executed to configure the task.

      After the task is added to the project, it is made available as a property of the project, so that you can reference the task by name in your build file. See here for more details

      throws:
        InvalidUserDataException If a task with the given name already exists in this project.
      Parameters:
        `name` - The name of the task to be created
        `configureClosure` - The closure to use to configure the created task.
      Returns:
        The newly created task object

    - #### public URI uri(Object path)

      Resolves a file path to a URI, relative to the project directory of this project. Evaluates the provided path object as described for file(Object), with the exception that any URI scheme is supported, not just 'file:' URIs.

      Parameters:
        `path` - The object to resolve as a URI.
      Returns:
        The resolved URI. Never returns null.

    - #### public FileTree zipTree(Object zipPath)

      Creates a new `FileTree` which contains the contents of the given ZIP file. The given zipPath path is evaluated as per file(Object). You can combine this method with the copy(groovy.lang.Closure) method to unzip a ZIP file.

      The returned file tree is lazy, so that it scans for files only when the contents of the file tree are queried. The file tree is also live, so that it scans for files each time the contents of the file tree are queried.

      Parameters:
        `zipPath` - The ZIP file. Evaluated as per file(Object).
      Returns:
        the file tree. Never returns null.