Uses of Class
org.apache.reef.util.Optional

Packages that use Optional

Package	Description
org.apache.reef.client	Client APIs for REEF.
org.apache.reef.common
org.apache.reef.driver.context
org.apache.reef.driver.evaluator
org.apache.reef.driver.task
org.apache.reef.evaluator.context
org.apache.reef.examples.suspend	suspend/resume demo.
org.apache.reef.runtime.common.driver	Implementation of the Driver-side REEF APIs.
org.apache.reef.runtime.common.driver.context	Implementations of Driver-Side representations of Contexts running on an Evaluator
org.apache.reef.runtime.common.driver.evaluator	Driver-Side representations of Evaluators.
org.apache.reef.runtime.common.evaluator.context	Context implementation of the Evaluator resourcemanager.
org.apache.reef.runtime.common.evaluator.context.defaults	Default implementations for the optional context interfaces.
org.apache.reef.runtime.common.utils
org.apache.reef.task
org.apache.reef.task.events
org.apache.reef.tests.fail.driver
org.apache.reef.tests.messaging.task
org.apache.reef.util	Various utility classes.

Uses of Optional in org.apache.reef.client

Methods in org.apache.reef.client that return Optional

Modifier and Type	Method and Description
Optional<Throwable>	LauncherStatus.getError()

Methods in org.apache.reef.client with parameters of type Optional

Modifier and Type	Method and Description
static LauncherStatus	LauncherStatus.FAILED(Optional<Throwable> ex)

Constructors in org.apache.reef.client with parameters of type Optional

Constructor and Description
FailedJob(String id, String message, Optional<String> description, Optional<Throwable> cause, Optional<byte[]> data)
FailedJob(String id, String message, Optional<String> description, Optional<Throwable> cause, Optional<byte[]> data)
FailedJob(String id, String message, Optional<String> description, Optional<Throwable> cause, Optional<byte[]> data)

Uses of Optional in org.apache.reef.common

Methods in org.apache.reef.common that return Optional

Modifier and Type	Method and Description
Optional<byte[]>	AbstractFailure.getData()
Optional<byte[]>	Failure.getData()
Optional<String>	AbstractFailure.getDescription()
Optional<String>	Failure.getDescription()
Optional<Throwable>	AbstractFailure.getReason()
Optional<Throwable>	Failure.getReason()

Uses of Optional in org.apache.reef.driver.context

Methods in org.apache.reef.driver.context that return Optional

Modifier and Type	Method and Description
Optional<ActiveContext>	FailedContext.getParentContext()
Optional<String>	ContextBase.getParentId()

Uses of Optional in org.apache.reef.driver.evaluator

Methods in org.apache.reef.driver.evaluator that return Optional

Modifier and Type	Method and Description
Optional<FailedTask>	FailedEvaluator.getFailedTask()

Uses of Optional in org.apache.reef.driver.task

Methods in org.apache.reef.driver.task that return Optional

Modifier and Type	Method and Description
Optional<ActiveContext>	FailedTask.getActiveContext() Access the context the task ran (and crashed) on, if it could be recovered.

Constructors in org.apache.reef.driver.task with parameters of type Optional

Constructor and Description
FailedTask(String id, String message, Optional<String> description, Optional<Throwable> cause, Optional<byte[]> data, Optional<ActiveContext> context)
FailedTask(String id, String message, Optional<String> description, Optional<Throwable> cause, Optional<byte[]> data, Optional<ActiveContext> context)
FailedTask(String id, String message, Optional<String> description, Optional<Throwable> cause, Optional<byte[]> data, Optional<ActiveContext> context)
FailedTask(String id, String message, Optional<String> description, Optional<Throwable> cause, Optional<byte[]> data, Optional<ActiveContext> context)

Uses of Optional in org.apache.reef.evaluator.context

Methods in org.apache.reef.evaluator.context that return Optional

Modifier and Type	Method and Description
Optional<ContextMessage>	ContextMessageSource.getMessage()

Uses of Optional in org.apache.reef.examples.suspend

Methods in org.apache.reef.examples.suspend that return Optional

Modifier and Type	Method and Description
Optional<TaskMessage>	SuspendTestTask.getMessage() Update driver on current state of the task.

Uses of Optional in org.apache.reef.runtime.common.driver

Methods in org.apache.reef.runtime.common.driver with parameters of type Optional

Modifier and Type	Method and Description
void	DriverStatusManager.sendJobEndingMessageToClient(Optional<Throwable> exception) Sends the final message to the Driver.

Uses of Optional in org.apache.reef.runtime.common.driver.context

Methods in org.apache.reef.runtime.common.driver.context that return Optional

Modifier and Type	Method and Description
Optional<ActiveContext>	FailedContextImpl.getParentContext()
Optional<String>	FailedContextImpl.getParentId()
Optional<String>	ClosedContextImpl.getParentId()
Optional<String>	EvaluatorContext.getParentId()

Constructors in org.apache.reef.runtime.common.driver.context with parameters of type Optional

Constructor and Description
EvaluatorContext(String contextIdentifier, String evaluatorIdentifier, EvaluatorDescriptor evaluatorDescriptor, Optional<String> parentID, ConfigurationSerializer configurationSerializer, ContextControlHandler contextControlHandler, EvaluatorMessageDispatcher messageDispatcher, ExceptionCodec exceptionCodec, ContextRepresenters contextRepresenters)
FailedContextImpl(String id, String message, Optional<String> description, Optional<Throwable> cause, Optional<byte[]> data, Optional<ActiveContext> parentContext, EvaluatorDescriptor evaluatorDescriptor, String evaluatorID)
FailedContextImpl(String id, String message, Optional<String> description, Optional<Throwable> cause, Optional<byte[]> data, Optional<ActiveContext> parentContext, EvaluatorDescriptor evaluatorDescriptor, String evaluatorID)
FailedContextImpl(String id, String message, Optional<String> description, Optional<Throwable> cause, Optional<byte[]> data, Optional<ActiveContext> parentContext, EvaluatorDescriptor evaluatorDescriptor, String evaluatorID)
FailedContextImpl(String id, String message, Optional<String> description, Optional<Throwable> cause, Optional<byte[]> data, Optional<ActiveContext> parentContext, EvaluatorDescriptor evaluatorDescriptor, String evaluatorID)

Uses of Optional in org.apache.reef.runtime.common.driver.evaluator

Methods in org.apache.reef.runtime.common.driver.evaluator that return Optional

Modifier and Type	Method and Description
Optional<EvaluatorManager>	Evaluators.get(String evaluatorId)

Uses of Optional in org.apache.reef.runtime.common.evaluator.context

Methods in org.apache.reef.runtime.common.evaluator.context that return Optional

Modifier and Type	Method and Description
Optional<String>	ContextClientCodeException.getParentID()
Optional<ReefServiceProtos.TaskStatusProto>	ContextManager.getTaskStatus()

Constructors in org.apache.reef.runtime.common.evaluator.context with parameters of type Optional

Constructor and Description
ContextClientCodeException(String contextID, Optional<String> parentID, String message, Throwable cause)

Uses of Optional in org.apache.reef.runtime.common.evaluator.context.defaults

Methods in org.apache.reef.runtime.common.evaluator.context.defaults that return Optional

Modifier and Type	Method and Description
Optional<ContextMessage>	DefaultContextMessageSource.getMessage()

Uses of Optional in org.apache.reef.runtime.common.utils

Methods in org.apache.reef.runtime.common.utils that return Optional

Modifier and Type	Method and Description
Optional<Throwable>	ExceptionCodec.fromBytes(byte[] bytes) Deserializes a Throwable that has been serialized using toBytes().
Optional<Throwable>	ExceptionCodec.fromBytes(Optional<byte[]> bytes)

Methods in org.apache.reef.runtime.common.utils with parameters of type Optional

Modifier and Type	Method and Description
Optional<Throwable>	ExceptionCodec.fromBytes(Optional<byte[]> bytes)

Uses of Optional in org.apache.reef.task

Methods in org.apache.reef.task that return Optional

Modifier and Type	Method and Description
Optional<TaskMessage>	TaskMessageSource.getMessage()

Uses of Optional in org.apache.reef.task.events

Methods in org.apache.reef.task.events that return Optional

Modifier and Type	Method and Description
Optional<byte[]>	DriverMessage.get()
Optional<byte[]>	CloseEvent.get()
Optional<byte[]>	SuspendEvent.get()

Uses of Optional in org.apache.reef.tests.fail.driver

Methods in org.apache.reef.tests.fail.driver that return Optional

Modifier and Type	Method and Description
Optional<TaskMessage>	NoopTask.getMessage()

Uses of Optional in org.apache.reef.tests.messaging.task

Methods in org.apache.reef.tests.messaging.task that return Optional

Modifier and Type	Method and Description
Optional<TaskMessage>	TaskMessagingTask.getMessage()

Uses of Optional in org.apache.reef.util

Methods in org.apache.reef.util that return Optional

Modifier and Type	Method and Description
static <T> Optional<T>	Optional.empty()
static <T> Optional<T>	Optional.of(T value)
static <T> Optional<T>	Optional.ofNullable(T value)