com.amazonaws.services.simpleworkflow.flow.generic

Class ActivityImplementationBase

java.lang.Object

com.amazonaws.services.simpleworkflow.flow.generic.ActivityImplementation

com.amazonaws.services.simpleworkflow.flow.generic.ActivityImplementationBase

public abstract class ActivityImplementationBase
extends ActivityImplementation

Extend this class to implement an activity. There are two types of activity implementation: synchronous and asynchronous. Synchronous ties thread that calls execute(String, ActivityExecutionContext) method.

Author:

fateev

See Also:

ActivityWorker

Constructor Summary

Constructors

Constructor and Description
ActivityImplementationBase()

Method Summary

Modifier and Type	Method and Description
String	execute(ActivityExecutionContext context) Execute external activity or initiate its execution.
protected abstract String	execute(String input, ActivityExecutionContext context) Execute activity.
ActivityTypeExecutionOptions	getExecutionOptions()
ActivityTypeRegistrationOptions	getRegistrationOptions() By default do not register

Methods inherited from class java.lang.Object

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

Constructor Detail

ActivityImplementationBase

public ActivityImplementationBase()

Method Detail

execute

public String execute(ActivityExecutionContext context)
               throws ActivityFailureException,
                      CancellationException

Description copied from class: ActivityImplementation

Execute external activity or initiate its execution.

Specified by:

execute in class ActivityImplementation

Parameters:

context - information about activity to be executed. Use ActivityExecutionContext.getTask().input() to get activity input arguments.

Returns:

result of activity execution.

Throws:

ActivityFailureException

CancellationException

See Also:

ActivityImplementation.execute(ActivityExecutionContext)

getExecutionOptions

public ActivityTypeExecutionOptions getExecutionOptions()

Specified by:

getExecutionOptions in class ActivityImplementation

getRegistrationOptions

public ActivityTypeRegistrationOptions getRegistrationOptions()

By default do not register

Specified by:

getRegistrationOptions in class ActivityImplementation

Returns:

null if activity registration is not required on the worker startup

execute

protected abstract String execute(String input,
                                  ActivityExecutionContext context)
                           throws ActivityFailureException,
                                  CancellationException

Execute activity.

Parameters:

input - activity input.

context - Context object passed to an activity implementation.

Returns:

result of activity execution

Throws:

ActivityFailureException

CancellationException