gradle DLS学习 之Configuration

A Configuration represents a group of artifacts and their dependencies.Configuration is an instance of a FileCollection that contains all dependencies

Property details

boolean transitive

The transitivity of this configuration. A transitive configuration contains the transitive closure of its direct dependencies, and all their(direct dependencies') dependencies. An intransitive configuration contains only the direct dependencies. The default value is true.

boolean visible —— 外部project是否可见


Returns true if this is a visible configuration. A visible configuration is usable outside the project it belongs to. The default value is true.

PublishArtifactSet allArtifacts (read-only)

The artifacts of this configuration including the artifacts of extended configurations.

PublishArtifactSet artifacts (read-only)

The artifacts of this configuration excluding the artifacts of extended configurations.

Set<Configuration> extendsFrom

The names of the configurations which this configuration extends from. The artifacts of the super configurations are also available in this configuration.

DependencySet allDependencies (read-only) ——  不包括传递性的依赖

Gets the complete set of declared dependencies including those contributed by superconfigurations.

This method does not resolve(解析) the configuration. Therefore, the return value does not include transitive dependencies.

DependencySet dependencies (read-only)

Gets the set of declared dependencies directly contained in this configuration (ignoring superconfigurations).

This method does not resolve the configuration. Therefore, the return value does not include transitive dependencies.

superconfigurations ； extended configurations 继承关系的configuration？ ： compile project(':library')

TaskDependency buildDependencies (read-only)

Returns a TaskDependency object containing all required dependencies to build the local dependencies (e.g. project dependencies) belonging to this configuration or to one of its super configurations.

A TaskDependency represents an unordered set of tasks which a Task depends on. Gradle ensures that all the dependencies of a task are executed before the task itself is executed.

String description

The description for this configuration.

String name (read-only)

The name of this configuration.

Set<ExcludeRule> excludeRules (read-only)

The exclude rules applied for resolving any dependency of this configuration.

Set<Configuration> hierarchy (read-only) —— 有序递归的

Gets a ordered set including this configuration and all superconfigurations recursively.

ResolvableDependencies incoming (read-only) —— 可解析的

The incoming dependencies of this configuration.

• 依赖该包（包含的类）的外部包（类）（i.e. incoming dependencies）
• 被该包依赖的外部包（i.e. outgoing dependencies）

ResolvedConfiguration resolvedConfiguration (read-only) —— 已解析的

Resolves this configuration. This locates and downloads the files which make up this configuration, and returns a ResolvedConfiguration that may be used to determine information about the resolve (including errors).

A ResolvedConfiguration represents the result of resolving a Configuration, and provides access to both the artifacts and the meta-data of the result.

ResolutionStrategy resolutionStrategy (read-only) —— 异常等的解决方案(策略)

The resolution strategy used by this configuration. The resolution strategy provides extra details on how to resolve this configuration. See docs for ResolutionStrategy for more info and examples.

Defines the strategies around dependency resolution. For example, forcing certain dependency versions, substitutions, conflict resolutions or snapshot timeouts.

State state (read-only)

The states a configuration can be into。A configuration is only mutable(易于改变的) as long as it is in the unresolved state。

public static final Configuration.State UNRESOLVED

public static final Configuration.State RESOLVED

public static final Configuration.State RESOLVED_WITH_FAILURES

Method details

Configuration copy()

Creates a copy of this configuration that only contains the dependencies directly in this configuration (without contributions from superconfigurations). The new configuration will be in the UNRESOLVED state, but will retain all other attributes of this configuration except superconfigurations. Configuration.getHierarchy() for the copy will not include any superconfigurations.

Configuration copyRecursive() —— configuration和attributes

Creates a copy of this configuration that contains the dependencies directly in this configuration and those derived from superconfigurations. The new configuration will be in the UNRESOLVED state, but will retain all other attributes of this configuration except superconfigurations. Configuration.getHierarchy() for the copy will not include any superconfigurations.

Configuration copy(Closure dependencySpec)

Takes a closure which gets coerced into a Spec. Behaves otherwise in the same way as Configuration.copy(org.gradle.api.specs.Spec)

Configuration copyRecursive(Closure dependencySpec)

Takes a closure which gets coerced into a Spec. Behaves otherwise in the same way as Configuration.copyRecursive(org.gradle.api.specs.Spec)

Configuration copy(Spec<? super Dependency> dependencySpec)

Creates a copy of this configuration ignoring superconfigurations (see Configuration.copy() but filtering the dependencies using the specified dependency spec.

Configuration copyRecursive(Spec<? super Dependency> dependencySpec)

Creates a copy of this configuration with dependencies from superconfigurations (see Configuration.copyRecursive()) but filtering the dependencies using the dependencySpec.

Spec ？？

Configuration defaultDependencies(Action<? super DependencySet> action)

Note: This method is incubating(在孵化的) and may change in a future version of Gradle.

Execute the given action if the configuration has no defined dependencies when it first participates in dependency resolution.

A Configuration will participate in dependency resolution when:

• The Configuration itself is resolved
• Another Configuration that extends this one is resolved
• Another Configuration that references this one as a project dependency is resolved

This method is useful for specifying default dependencies for a configuration:

configurations { conf }
configurations['conf'].defaultDependencies { 
dependencies -> dependencies.add(owner.project.dependencies.create("org.gradle:my-util:1.0")) —— action } 

A Configuration is considered empty even if it extends another, non-empty Configuration.—— 即使extends另一个非空Configuration，如果没有define dependencies，扔会被认为是空

If multiple actions are supplied, each action will be executed until the set of dependencies is no longer empty. Remaining actions will be ignored.——多个action时，每一个action都会被执行，直到Configuration不为空。余下未执行的action会被忽略

Configuration exclude(Map<String, String> excludeProperties)

Adds an exclude rule to exclude transitive dependencies for all dependencies of this configuration. You can also add exclude rules per-dependency. See ModuleDependency.exclude(java.util.Map).

Configuration extendsFrom(Configuration... superConfigs)

Adds the given configurations to the set of configuration which this configuration extends from.

FileCollection fileCollection(Closure dependencySpecClosure)

Takes a closure which gets coerced into a Spec. Behaves otherwise in the same way asConfiguration.fileCollection(org.gradle.api.specs.Spec).

FileCollection fileCollection(Dependency... dependencies)

Resolves this configuration lazily. The resolve happens when the elements of the returned FileCollection get accessed the first time. This locates and downloads the files which make up this configuration. Only the resulting set of files belonging to specified dependencies is contained in the FileCollection.

FileCollection fileCollection(Spec<? super Dependency> dependencySpec)

Resolves this configuration lazily. The resolve happens when the elements of the returned FileCollection get accessed the first time. This locates and downloads the files which make up this configuration. Only the resulting set of files belonging to the subset of dependencies specified by the dependencySpec is contained in the FileCollection.

Closure dependencySpecClosure)；Dependency... dependencies；Spec<? super Dependency> dependencySpec) ？？？？

Set<File> files(Closure dependencySpecClosure)

Takes a closure which gets coerced into a Spec. Behaves otherwise in the same way asConfiguration.files(org.gradle.api.specs.Spec).

Set<File> files(Dependency... dependencies)

Resolves this configuration. This locates and downloads the files which make up this configuration. But only the resulting set of files belonging to the specified dependencies is returned.

Set<File> files(Spec<? super Dependency> dependencySpec)

Resolves this configuration. This locates and downloads the files which make up this configuration. But only the resulting set of files belonging to the subset of dependencies specified by the dependencySpec is returned.

TaskDependency getTaskDependencyFromProjectDependency(boolean useDependedOn, StringtaskName)

Returns a TaskDependency object containing dependencies on （ all tasks with the specified name from （project dependencies related to this configuration）or （one of its super configurations））.

These other projects may be projects （this configuration depends on） or projects （with a similarly named configuration that depend on this one） based on the useDependOn argument.