net.sf.asyncobjects.io.util
Class NulInput<D extends BatchedData<D>,I extends AInput<D>>
java.lang.Object
net.sf.asyncobjects.AsyncUnicastServer<I>
net.sf.asyncobjects.io.util.NulInput<D,I>
- Type Parameters:
D
- a batched data typeI
- an input stream type
- All Implemented Interfaces:
- ACloseable, AsyncObject, ExplicitSharing, AInput<D>
- Direct Known Subclasses:
- NulByteInput, NulTextInput
public class NulInput<D extends BatchedData<D>,I extends AInput<D>>
- extends AsyncUnicastServer<I>
- implements AInput<D>
A zero lenght stream. It always returns EOF on read, unless close operation
was called.
- Author:
- const
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
NulInput
public NulInput()
isPushbackSupported
public Promise<Boolean> isPushbackSupported()
- Specified by:
isPushbackSupported
in interface AInput<D extends BatchedData<D>>
- Returns:
- true if pushback supported for this stream
- See Also:
AInput.isPushbackSupported()
pushback
public Promise<Void> pushback(D data)
- Description copied from interface:
AInput
- Attempt to return some data to stream. Most streams do not support this
operation. Note that pushback operation has the same priority as read
operation.
- Specified by:
pushback
in interface AInput<D extends BatchedData<D>>
- Parameters:
data
- a data to unread.
- Returns:
- a promise for null or exception if stream does not supports
unreading.
- See Also:
AInput.pushback(net.sf.asyncobjects.io.BatchedData)
read
public Promise<D> read(int limit)
- Description copied from interface:
AInput
- Read some data.
- Specified by:
read
in interface AInput<D extends BatchedData<D>>
- Parameters:
limit
- a maximum amount of data elements to read.
- Returns:
- Promise for non-empty data batch that contains read inforation or
null if eof is reached.
- See Also:
AInput.read(int)
close
public Promise<Void> close()
- Description copied from interface:
ACloseable
- Close resource
- Specified by:
close
in interface ACloseable
- Returns:
- a promise that resolves when object is closed.
- See Also:
ACloseable.close()
Copyright © 2002-2007 Constantine Plotnikov. All Rights Reserved.