WriteProperties

API Documentation:WriteProperties

Writes a Properties in a way that the results can be expected to be reproducible.

There are a number of differences compared to how properties are stored:

  • no timestamp comment is generated at the beginning of the file
  • the lines in the resulting files are separated by a pre-set separator (defaults to '\n') instead of the system default line separator
  • the properties are sorted alphabetically

Like with Properties, Unicode characters are escaped when using the default Latin-1 (ISO-8559-1) encoding.

Properties

PropertyDescription
actions

The sequence of Action objects which will be executed by this task, in the order of execution.

ant

The AntBuilder for this task. You can use this in your build file to execute ant tasks.

comment

The optional comment to add at the beginning of the properties file.

convention
Deprecated

The Convention object for this task. A Plugin can use the convention object to contribute properties and methods to this task.

dependsOn

The dependencies of this task.

description

The description of this task.

destinationFile

The output properties file.

destroyables

The destroyables of this task.

didWork

Checks if the task actually did any work. Even if a Task executes, it may determine that it has nothing to do. For example, a compilation task may determine that source files have not changed since the last time a the task was run.

enabled

Returns if this task is enabled or not.

encoding

The encoding used to write the properties file. Defaults to ISO_8859_1. If set to anything different, unicode escaping is turned off.

extensions

The container of extensions.

finalizedBy

Returns tasks that finalize this task.

group

The task group which this task belongs to. The task group is used in reports and user interfaces to group related tasks together when presenting a list of tasks to the user.

inputs

The inputs of this task.

lineSeparator

The line separator to be used when creating the properties file. Defaults to `\n`.

localState

The local state of this task.

logger

The logger for this task. You can use this in your build file to write log messages.

logging

The LoggingManager which can be used to receive logging and to control the standard output/error capture for this task. 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.

mustRunAfter

Returns tasks that this task must run after.

name

The name of this task. The name uniquely identifies the task within its Project.

outputFile
Deprecated

The output file to write the properties to.

outputs

The outputs of this task.

path

The path of the task, which is a fully qualified name for the task. The path of a task is the path of its Project plus the name of the task, separated by :.

project

The Project which this task belongs to.

properties

Returns an immutable view of properties to be written to the properties file.

shouldRunAfter

Returns tasks that this task should run after.

state

The execution state of this task. This provides information about the execution of this task, such as whether it has executed, been skipped, has failed, etc.

taskDependencies

Returns a TaskDependency which contains all the tasks that this task depends on.

temporaryDir

Returns a directory which this task can use to write temporary files to. Each task instance is provided with a separate temporary directory. There are no guarantees that the contents of this directory will be kept beyond the execution of the task.

timeout

The timeout of this task.

Methods

MethodDescription
dependsOn(paths)

Adds the given dependencies to this task. See here for a description of the types of objects which can be used as task dependencies.

doFirst(action)

Adds the given closure to the beginning of this task's action list. The closure is passed this task as a parameter when executed.

doFirst(actionName, action)

Adds the given Action to the beginning of this task's action list.

doFirst(action)

Adds the given Action to the beginning of this task's action list.

doLast(action)

Adds the given closure to the end of this task's action list. The closure is passed this task as a parameter when executed.

doLast(actionName, action)

Adds the given Action to the end of this task's action list.

doLast(action)

Adds the given Action to the end of this task's action list.

doNotTrackState(reasonNotToTrackState)

Do not track the state of the task.

finalizedBy(paths)

Adds the given finalizer tasks for this task.

hasProperty(propertyName)

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

mustRunAfter(paths)

Specifies that this task must run after all of the supplied tasks.

onlyIf(onlyIfClosure)

Execute the task only if the given closure returns true. The closure will be evaluated at task execution time, not during configuration. The closure will be passed a single parameter, this task. If the closure returns false, the task will be skipped.

onlyIf(onlyIfReason, onlyIfSpec)
Incubating

Execute the task only if the given spec is satisfied. The spec will be evaluated at task execution time, not during configuration. If the Spec is not satisfied, the task will be skipped.

onlyIf(onlyIfSpec)

Execute the task only if the given spec is satisfied. The spec will be evaluated at task execution time, not during configuration. If the Spec is not satisfied, the task will be skipped.

properties(properties)

Adds multiple properties to be written to the properties file.

property(propertyName)

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

property(name, value)

Adds a property to be written to the properties file.

setProperty(name, value)

Sets a property of this task. 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.

shouldRunAfter(paths)

Specifies that this task should run after all of the supplied tasks.

usesService(service)

Registers a BuildService that is used by this task so BuildServiceRegistration.getMaxParallelUsages() can be honored.

Script blocks

No script blocks

Property details

List<Action<? super Task>> actions

The sequence of Action objects which will be executed by this task, in the order of execution.

AntBuilder ant (read-only)

The AntBuilder for this task. You can use this in your build file to execute ant tasks.

String comment

The optional comment to add at the beginning of the properties file.

Default:
null

Convention convention (read-only)

Note: This property is deprecated and will be removed in the next major version of Gradle.

The Convention object for this task. A Plugin can use the convention object to contribute properties and methods to this task.

Set<Object> dependsOn

The dependencies of this task.

String description

The description of this task.

RegularFileProperty destinationFile

The output properties file.

Default:
null

TaskDestroyables destroyables (read-only)

The destroyables of this task.

boolean didWork

Checks if the task actually did any work. Even if a Task executes, it may determine that it has nothing to do. For example, a compilation task may determine that source files have not changed since the last time a the task was run.

boolean enabled

Returns if this task is enabled or not.

String encoding

The encoding used to write the properties file. Defaults to ISO_8859_1. If set to anything different, unicode escaping is turned off.

Default:
ISO-8859-1

ExtensionContainer extensions (read-only)

The container of extensions.

TaskDependency finalizedBy

Returns tasks that finalize this task.

String group

The task group which this task belongs to. The task group is used in reports and user interfaces to group related tasks together when presenting a list of tasks to the user.

TaskInputs inputs (read-only)

The inputs of this task.

String lineSeparator

The line separator to be used when creating the properties file. Defaults to `\n`.

Default:
'\n'

TaskLocalState localState (read-only)

The local state of this task.

Logger logger (read-only)

The logger for this task. You can use this in your build file to write log messages.

LoggingManager logging (read-only)

The LoggingManager which can be used to receive logging and to control the standard output/error capture for this task. 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.

TaskDependency mustRunAfter

Returns tasks that this task must run after.

String name (read-only)

The name of this task. The name uniquely identifies the task within its Project.

File outputFile

Note: This property is deprecated and will be removed in the next major version of Gradle.

The output file to write the properties to.

Default:
null

TaskOutputs outputs (read-only)

The outputs of this task.

String path (read-only)

The path of the task, which is a fully qualified name for the task. The path of a task is the path of its Project plus the name of the task, separated by :.

Project project (read-only)

The Project which this task belongs to.

Calling this method from a task action is not supported when configuration caching is enabled.

Map<String, String> properties

Returns an immutable view of properties to be written to the properties file.

Default:
[:]

TaskDependency shouldRunAfter

Returns tasks that this task should run after.

TaskState state (read-only)

The execution state of this task. This provides information about the execution of this task, such as whether it has executed, been skipped, has failed, etc.

TaskDependency taskDependencies (read-only)

Returns a TaskDependency which contains all the tasks that this task depends on.

Calling this method from a task action is not supported when configuration caching is enabled.

File temporaryDir (read-only)

Returns a directory which this task can use to write temporary files to. Each task instance is provided with a separate temporary directory. There are no guarantees that the contents of this directory will be kept beyond the execution of the task.

The timeout of this task.

task myTask {
    timeout = Duration.ofMinutes(10)
}

The Thread executing this task will be interrupted if the task takes longer than the specified amount of time to run. In order for a task to work properly with this feature, it needs to react to interrupts and must clean up any resources it opened.

By default, tasks never time out.

Method details

Task dependsOn(Object... paths)

Adds the given dependencies to this task. See here for a description of the types of objects which can be used as task dependencies.

Task doFirst(Closure action)

Adds the given closure to the beginning of this task's action list. The closure is passed this task as a parameter when executed.

Task doFirst(String actionName, Action<? super Task> action)

Adds the given Action to the beginning of this task's action list.

Task doFirst(Action<? super Task> action)

Adds the given Action to the beginning of this task's action list.

Task doLast(Closure action)

Adds the given closure to the end of this task's action list. The closure is passed this task as a parameter when executed.

Task doLast(String actionName, Action<? super Task> action)

Adds the given Action to the end of this task's action list.

Task doLast(Action<? super Task> action)

Adds the given Action to the end of this task's action list.

void doNotTrackState(String reasonNotToTrackState)

Do not track the state of the task.

Instructs Gradle to treat the task as untracked.

Task finalizedBy(Object... paths)

Adds the given finalizer tasks for this task.

task taskY {
    finalizedBy "taskX"
}

See here for a description of the types of objects which can be used to specify a finalizer task.

boolean hasProperty(String propertyName)

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

Task mustRunAfter(Object... paths)

Specifies that this task must run after all of the supplied tasks.

task taskY {
    mustRunAfter "taskX"
}

For each supplied task, this action adds a task 'ordering', and does not specify a 'dependency' between the tasks. As such, it is still possible to execute 'taskY' without first executing the 'taskX' in the example.

See here for a description of the types of objects which can be used to specify an ordering relationship.

void onlyIf(Closure onlyIfClosure)

Execute the task only if the given closure returns true. The closure will be evaluated at task execution time, not during configuration. The closure will be passed a single parameter, this task. If the closure returns false, the task will be skipped.

You may add multiple such predicates. The task is skipped if any of the predicates return false.

Typical usage:myTask.onlyIf { isProductionEnvironment() }

void onlyIf(String onlyIfReason, Spec<? super Task> onlyIfSpec)

Note: This method is incubating and may change in a future version of Gradle.

Execute the task only if the given spec is satisfied. The spec will be evaluated at task execution time, not during configuration. If the Spec is not satisfied, the task will be skipped.

You may add multiple such predicates. The task is skipped if any of the predicates return false.

Typical usage (from Java):

myTask.onlyIf("run only in production environment", new Spec<Task>() {
   boolean isSatisfiedBy(Task task) {
      return isProductionEnvironment();
   }
});

void onlyIf(Spec<? super Task> onlyIfSpec)

Execute the task only if the given spec is satisfied. The spec will be evaluated at task execution time, not during configuration. If the Spec is not satisfied, the task will be skipped.

You may add multiple such predicates. The task is skipped if any of the predicates return false.

Typical usage (from Java):

myTask.onlyIf(new Spec<Task>() {
   boolean isSatisfiedBy(Task task) {
      return isProductionEnvironment();
   }
});

void properties(Map<String, Object> properties)

Adds multiple properties to be written to the properties file.

This is a convenience method for calling WriteProperties.property(java.lang.String, java.lang.Object) multiple times.

Object property(String propertyName)

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

  1. If this task object has a property with the given name, return the value of the property.
  2. If this task has an extension with the given name, return the extension.
  3. If this task's convention object has a property with the given name, return the value of the property.
  4. If this task has an extra property with the given name, return the value of the property.
  5. If not found, throw MissingPropertyException

void property(String name, Object value)

Adds a property to be written to the properties file.

A property's value will be coerced to a String with String#valueOf(Object) or a Callable returning a value to be coerced into a String.

Values are not allowed to be null.

void setProperty(String name, Object value)

Sets a property of this task. 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 task object itself. For example, the enabled project property.
  2. The task's convention object.
  3. The task's extra properties.

If the property is not found, a MissingPropertyException is thrown.

TaskDependency shouldRunAfter(Object... paths)

Specifies that this task should run after all of the supplied tasks.

task taskY {
    shouldRunAfter "taskX"
}

For each supplied task, this action adds a task 'ordering', and does not specify a 'dependency' between the tasks. As such, it is still possible to execute 'taskY' without first executing the 'taskX' in the example.

See here for a description of the types of objects which can be used to specify an ordering relationship.

void usesService(Provider<? extends BuildService<?>> service)

Registers a BuildService that is used by this task so BuildServiceRegistration.getMaxParallelUsages() can be honored.