Package org.jboss.elemento.flow

Class ParallelTasks<C extends FlowContext>

java.lang.Object

org.jboss.elemento.flow.ParallelTasks<C>

Type Parameters:

C - the type of the context shared between tasks

All Implemented Interfaces:

Task<C>

public class ParallelTasks<C extends FlowContext>
extends Object
implements Task<C>

A task implementation that executes a list of asynchronous tasks in parallel.

This implementation makes it easy to nest the execution of asynchronous tasks inside a call to Flow.parallel(FlowContext, List), Flow.sequential(FlowContext, List) or Flow.repeat(FlowContext, Task).

Constructor Summary

Constructors

Constructor	Description
ParallelTasks(C context, List<Task<C>> tasks)	Creates a new task that executes the given list of asynchronous tasks in parallel using a new context.
ParallelTasks(C context, List<Task<C>> tasks, boolean failFast)	Creates a new task that executes the given list of asynchronous tasks in parallel using a new context.
ParallelTasks(C context, List<Task<C>> tasks, boolean failFast, long timeout)	Creates a new task that executes the given list of asynchronous tasks in parallel using a new context.
ParallelTasks(List<Task<C>> tasks)	Creates a new task that executes the given list of asynchronous tasks in parallel re-using an existing context.
ParallelTasks(List<Task<C>> tasks, boolean failFast)	Creates a new task that executes the given list of asynchronous tasks in parallel using a new context.
ParallelTasks(List<Task<C>> tasks, boolean failFast, long timeout)	Creates a new task that executes the given list of asynchronous tasks in parallel using a new context.

Method Summary

Modifier and Type	Method	Description
elemental2.promise.Promise<C>	apply(C context)	Executes the task.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

ParallelTasks

public ParallelTasks(List<Task<C>> tasks)

Creates a new task that executes the given list of asynchronous tasks in parallel re-using an existing context.

The task fails fast and re-uses the context from the outer call to Flow.parallel(FlowContext, List), Flow.sequential(FlowContext, List) or Flow.repeat(FlowContext, Task).

Parameters:

tasks - the list of tasks to execute

ParallelTasks

public ParallelTasks(List<Task<C>> tasks,
 boolean failFast)

Creates a new task that executes the given list of asynchronous tasks in parallel using a new context.

The task re-uses the context from the outer call to Flow.parallel(FlowContext, List), Flow.sequential(FlowContext, List) or Flow.repeat(FlowContext, Task).

Parameters:

tasks - The list of tasks to execute

failFast - whether the execution of the tasks should fail fast or fail last

ParallelTasks

public ParallelTasks(List<Task<C>> tasks,
 boolean failFast,
 long timeout)

Creates a new task that executes the given list of asynchronous tasks in parallel using a new context.

The task re-uses the context from the outer call to Flow.parallel(FlowContext, List), Flow.sequential(FlowContext, List) or Flow.repeat(FlowContext, Task).

Parameters:

tasks - The list of tasks to execute

failFast - whether the execution of the tasks should fail fast or fail last

timeout - the timeout in milliseconds for the sequence

ParallelTasks

public ParallelTasks(C context,
 List<Task<C>> tasks)

Creates a new task that executes the given list of asynchronous tasks in parallel using a new context.

The task fails fast and uses the given context for the execution of the asynchronous tasks.

Parameters:

context - the context shared between tasks

tasks - The list of tasks to execute

ParallelTasks

public ParallelTasks(C context,
 List<Task<C>> tasks,
 boolean failFast)

Creates a new task that executes the given list of asynchronous tasks in parallel using a new context.

The task uses the given context for the execution of the asynchronous tasks.

Parameters:

context - the context shared between tasks

tasks - The list of tasks to execute

failFast - whether the execution of the tasks should fail fast or fail last

ParallelTasks

public ParallelTasks(C context,
 List<Task<C>> tasks,
 boolean failFast,
 long timeout)

Creates a new task that executes the given list of asynchronous tasks in parallel using a new context.

The task uses the given context for the execution of the asynchronous tasks.

Parameters:

context - the context shared between tasks

tasks - The list of tasks to execute

failFast - whether the execution of the tasks should fail fast or fail last

timeout - the timeout in milliseconds for the sequence

Method Details

apply

public elemental2.promise.Promise<C> apply(C context)

Description copied from interface: Task

Executes the task.

Specified by:

apply in interface Task<C extends FlowContext>

Parameters:

context - the context shared between tasks

Returns:

a promise containing the shared context