groovyx.gpars.dataflow.stream
Class DataflowStreamWriteAdapter<T>

java.lang.Object
  groovyx.gpars.dataflow.stream.DataflowStreamWriteAdapter<T>

Type Parameters:

T - The type of messages to pass through the stream

All Implemented Interfaces:

DataflowWriteChannel<T>

Direct Known Subclasses:

DataflowBroadcast, SyncDataflowBroadcast

public class DataflowStreamWriteAdapter<T>
extends java.lang.Object
implements DataflowWriteChannel<T>

Adapts a DataflowStream to accommodate for the DataflowWriteChannel interface. It also synchronizes all changes to the underlying stream allowing multiple threads accessing the stream concurrently.

Author:

Vaclav Pech

Field Summary

private StreamCore<T>

head

Constructor Summary

DataflowStreamWriteAdapter(StreamCore<T> stream)
Creates a new adapter

Method Summary

void	bind(T value) Assigns a value to the variable.
protected StreamCore<T>	getHead()
DataflowWriteChannel<T>	leftShift(DataflowReadChannel<T> ref) Assigns a value from one DataflowVariable instance to this variable.
DataflowWriteChannel<T>	leftShift(T value) Assigns a value to the variable.
java.lang.String	toString()
private StreamCore<T>	updateHead() Moves head

Methods inherited from class java.lang.Object

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

Field Detail

head

private StreamCore<T> head

Constructor Detail

DataflowStreamWriteAdapter

public DataflowStreamWriteAdapter(StreamCore<T> stream)

Creates a new adapter

Parameters:

stream - The stream to wrap

Method Detail

leftShift

public final DataflowWriteChannel<T> leftShift(T value)

Description copied from interface: DataflowWriteChannel

Assigns a value to the variable. Can only be invoked once on each instance of DataflowVariable

Specified by:

leftShift in interface DataflowWriteChannel<T>

Parameters:

value - The value to assign

Returns:

The current channel instance

leftShift

public final DataflowWriteChannel<T> leftShift(DataflowReadChannel<T> ref)

Description copied from interface: DataflowWriteChannel

Assigns a value from one DataflowVariable instance to this variable. Can only be invoked once on each instance of DataflowVariable

Specified by:

leftShift in interface DataflowWriteChannel<T>

Parameters:

ref - The DataflowVariable instance the value of which to bind

Returns:

The current channel instance

bind

public final void bind(T value)

Description copied from interface: DataflowWriteChannel

Assigns a value to the variable. Can only be invoked once on each instance of DataflowVariable

Specified by:

bind in interface DataflowWriteChannel<T>

Parameters:

value - The value to assign

updateHead

private StreamCore<T> updateHead()

Moves head

Returns:

The old head

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getHead

protected final StreamCore<T> getHead()