org.mule.runtime.extension.api.runtime.operation

Class Result<T,A>

java.lang.Object

org.mule.runtime.extension.api.runtime.operation.Result<T,A>

Type Parameters:

T - the generic type of the output value

A - the generic type of the message attributes

public class Result<T,A>
extends Object

Represents the result of an operation execution. Extensions can use this class for cases in which the operation not only needs to return a value to be set on the message payload but also wants to specify message attributes and/or MediaType.

The getOutput() value is always taken at face value, meaning that if it's null, then the value that the operation returns to the runtime will in fact be null. However, if the getAttributes() or getMediaType() are Optional.empty(), then the runtime will interpret that as the operation not interested in setting those values, keeping the input message's attributes and/or media type untouched.

Since:

1.0

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Result.Builder<T,A> Builds instances of Result

Method Summary

Modifier and Type	Method and Description
static <T,A> Result.Builder<T,A>	builder() Creates a new Result.Builder
static <T,A> Result.Builder<T,A>	builder(org.mule.runtime.api.message.Message muleMessage) Creates a new Result.Builder initialises with a state that matched the one of the given muleMessage
static <T,A> Result.Builder<T,A>	builder(Result<T,A> prototypeResult) Creates a new Result.Builder initialises with a state that matched the one of the given prototypeResult
Optional<A>	getAttributes() The new value that the operation wants to set on Message.getAttributes().
Optional<org.mule.runtime.api.metadata.MediaType>	getAttributesMediaType() The new MediaType that the operation wants to set on Message attributes.
Optional<org.mule.runtime.api.metadata.MediaType>	getMediaType() The new MediaType that the operation wants to set on Message payload.
T	getOutput()

Methods inherited from class java.lang.Object

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

Method Detail

builder

public static <T,A> Result.Builder<T,A> builder()

Creates a new Result.Builder

Type Parameters:

T - the generic type of the output value

A - the generic type of the message attributes

Returns:

a new Result.Builder

builder

public static <T,A> Result.Builder<T,A> builder(org.mule.runtime.api.message.Message muleMessage)

Creates a new Result.Builder initialises with a state that matched the one of the given muleMessage

Type Parameters:

T - the generic type of the output value

A - the generic type of the message attributes

Parameters:

muleMessage - a reference Message

Returns:

a new Result.Builder

builder

public static <T,A> Result.Builder<T,A> builder(Result<T,A> prototypeResult)

Creates a new Result.Builder initialises with a state that matched the one of the given prototypeResult

Type Parameters:

T - the generic type of the output value

A - the generic type of the message attributes

Parameters:

prototypeResult - a prototype Result

Returns:

a new Result.Builder

getOutput

public T getOutput()

Returns:

The operation's output

getAttributes

public Optional<A> getAttributes()

The new value that the operation wants to set on Message.getAttributes().

The operation might not be interested in changing that value, in which case this method would return Optional.empty()

Returns:

an Optional Attributes value

getMediaType

public Optional<org.mule.runtime.api.metadata.MediaType> getMediaType()

The new MediaType that the operation wants to set on Message payload.

The operation might not be interested in changing that value, in which case this method would return Optional.empty()

Returns:

an Optional MediaType value

getAttributesMediaType

public Optional<org.mule.runtime.api.metadata.MediaType> getAttributesMediaType()

The new MediaType that the operation wants to set on Message attributes.

The operation might not be interested in changing that value, in which case this method would return Optional.empty()

Returns:

an Optional MediaType value