Package com.yahoo.processing.response

Interface IncomingData<DATATYPE extends Data>

All Known Implementing Classes:

DefaultIncomingData, IncomingData.NullIncomingData

public interface IncomingData<DATATYPE extends Data>

A data list own once instance of this which can be used to provide data asynchronously to the list, and consume, wait for or be notified upon the arrival of such data.

Author:

bratseth

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	IncomingData.NullIncomingData<DATATYPE extends Data>	Creates a null implementation of this which is empty and complete at creation: Provides immediate return without incurring any memory synchronization for any read method.

Method Summary

Modifier and Type	Method	Description
void	add(DATATYPE data)	Add new data without completing this
void	add(java.util.List<DATATYPE> data)	Add new data without completing this.
void	addLast(DATATYPE data)	Add new data and mark this as completed
void	addLast(java.util.List<DATATYPE> data)	Add new data and mark this as completed
void	addNewDataListener(java.lang.Runnable listener, java.util.concurrent.Executor executor)	Add a listener which will be invoked every time new data is added to this.
com.google.common.util.concurrent.ListenableFuture<DataList<DATATYPE>>	completed()	Returns a future in which all the incoming data that will be produced in this is available.
java.util.List<DATATYPE>	drain()	Get and remove all the data currently available in this
DataList<DATATYPE>	getOwner()	Returns the owner (target DataList) of this.
boolean	isComplete()	Returns whether this is complete
void	markComplete()	Mark this as completed and notify any listeners.

Method Detail

getOwner

DataList<DATATYPE> getOwner()

Returns the owner (target DataList) of this. Note that accessing the owner from the thread producing incoming data is generally *not* thread safe.

completed

com.google.common.util.concurrent.ListenableFuture<DataList<DATATYPE>> completed()

Returns a future in which all the incoming data that will be produced in this is available. Listeners on this are invoked on the thread producing the incoming data (or a thread spawned from it), which in general is separate from the thread using the data list. Hence, listeners on this even cannot in general assume that they may modify the data list or the request.

The data is not drained into the owner of this by this method. That must be done by the thread using the data list.

This return the list owning this for convenience.

isComplete

boolean isComplete()

Returns whether this is complete

addLast

void addLast(DATATYPE data)

Add new data and mark this as completed

Throws:

java.lang.IllegalStateException - if this is already complete or does not allow writes

add

void add(DATATYPE data)

Add new data without completing this

Throws:

java.lang.IllegalStateException - if this is already complete or does not allow writes

addLast

void addLast(java.util.List<DATATYPE> data)

Add new data and mark this as completed

Throws:

java.lang.IllegalStateException - if this is already complete or does not allow writes

add

void add(java.util.List<DATATYPE> data)

Add new data without completing this.

Throws:

java.lang.IllegalStateException - if this is already complete or does not allow writes

markComplete

void markComplete()

Mark this as completed and notify any listeners. If this is already complete this method does nothing.

drain

java.util.List<DATATYPE> drain()

Get and remove all the data currently available in this

addNewDataListener

void addNewDataListener(java.lang.Runnable listener,
                        java.util.concurrent.Executor executor)

Add a listener which will be invoked every time new data is added to this. This listener may be invoked at any time in any thread, any thread synchronization is left to the listener itself