Package eu.bandm.tools.message

Class MessageMapper<M extends Message,N extends Message>

java.lang.Object

eu.bandm.tools.message.SingleSender<N>

eu.bandm.tools.message.MessageMapper<M,N>

All Implemented Interfaces:

MessageReceiver<M>

public class MessageMapper<M extends Message,N extends Message>
extends SingleSender<N>
implements MessageReceiver<M>

A message receiver which receives a message of one type, and propagates the result of applying a function to this message, which may be of different type.

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	allowPartialFunctions	Whether a null value coming from the function means not to send anything.
protected java.util.function.Function<? super M,? extends N>	fun	Evident.

Fields inherited from class eu.bandm.tools.message.SingleSender

receiver

Constructor Summary

Constructors

Constructor	Description
MessageMapper(java.util.function.Function<? super M,? extends N> fun)	Will apply the specified total function to each received message.
MessageMapper(java.util.function.Function<? super M,? extends N> fun, boolean p)	Will apply the specified function to each received message.
MessageMapper(java.util.function.Function<? super M,? extends N> fun, boolean p, MessageReceiver<N> drain)	Will apply the specified function to each received message.

Method Summary

Modifier and Type	Method	Description
static <M extends Message,N extends Message> java.util.function.Function<MessageReceiver<N>,MessageReceiver<M>>	lift(java.util.function.Function<M,? extends N> f)	Delivers a function to apply on a message receiver for type "N" to get a message receiver for type "M", when a function is given which maps the messages the other way round.
void	receive(M message)	Apply the function fun and send its result to the curent drain SingleSender.receiver.
protected void	setAllowPartialFunctions(boolean b)	Evident

Methods inherited from class eu.bandm.tools.message.SingleSender

getReceiver, send, setReceiver

Methods inherited from class java.lang.Object

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

Field Detail

fun

protected final java.util.function.Function<? super M extends Message,? extends N extends Message> fun

Evident.

allowPartialFunctions

protected boolean allowPartialFunctions

Whether a null value coming from the function means not to send anything. Otherwise, it is an error.

Constructor Detail

MessageMapper

public MessageMapper(java.util.function.Function<? super M,? extends N> fun,
                     boolean p,
                     MessageReceiver<N> drain)

Will apply the specified function to each received message.

Parameters:

p - whether partial functions returning null are allowed

MessageMapper

public MessageMapper(java.util.function.Function<? super M,? extends N> fun,
                     boolean p)

Will apply the specified function to each received message.

Parameters:

p - whether partial functions returning null are allowed

MessageMapper

public MessageMapper(java.util.function.Function<? super M,? extends N> fun)

Will apply the specified total function to each received message.

Method Detail

setAllowPartialFunctions

protected void setAllowPartialFunctions(boolean b)

Evident

receive

public void receive(M message)

Apply the function fun and send its result to the curent drain SingleSender.receiver.

Specified by:

receive in interface MessageReceiver<M extends Message>

lift

public static <M extends Message,N extends Message> java.util.function.Function<MessageReceiver<N>,MessageReceiver<M>> lift(java.util.function.Function<M,? extends N> f)

Delivers a function to apply on a message receiver for type "N" to get a message receiver for type "M", when a function is given which maps the messages the other way round.