Android APIs
public abstract class

AbstractSelector

extends Selector
java.lang.Object
   ↳ java.nio.channels.Selector
     ↳ java.nio.channels.spi.AbstractSelector

Class Overview

AbstractSelector is the base implementation class for selectors. It realizes the interruption of selection by begin and end. It also holds the cancellation and the deletion of the key set.

Summary

Protected Constructors
AbstractSelector(SelectorProvider selectorProvider)
Public Methods
final void close()
Closes this selector.
final boolean isOpen()
Returns true if this selector is open.
final SelectorProvider provider()
Returns this selector's provider.
Protected Methods
final void begin()
Indicates the beginning of a code section that includes an I/O operation that is potentially blocking.
final Set<SelectionKey> cancelledKeys()
Returns this channel's set of canceled selection keys.
final void deregister(AbstractSelectionKey key)
Deletes the key from the channel's key set.
final void end()
Indicates the end of a code section that has been started with begin() and that includes a potentially blocking I/O operation.
abstract void implCloseSelector()
Implements the closing of this channel.
abstract SelectionKey register(AbstractSelectableChannel channel, int operations, Object attachment)
Registers channel with this selector.
[Expand]
Inherited Methods
From class java.nio.channels.Selector
From class java.lang.Object
From interface java.io.Closeable
From interface java.lang.AutoCloseable

Protected Constructors

protected AbstractSelector (SelectorProvider selectorProvider)

Added in API level 1

Parameters
selectorProvider

Public Methods

public final void close ()

Added in API level 1

Closes this selector. This method does nothing if this selector is already closed. The actual closing must be implemented by subclasses in implCloseSelector().

Throws
IOException

public final boolean isOpen ()

Added in API level 1

Returns true if this selector is open.

Returns
boolean true if this selector is not closed, false otherwise.

public final SelectorProvider provider ()

Added in API level 1

Returns this selector's provider.

Returns
SelectorProvider the provider of this selector.

Protected Methods

protected final void begin ()

Added in API level 1

Indicates the beginning of a code section that includes an I/O operation that is potentially blocking. After this operation, the application should invoke the corresponding end(boolean) method.

protected final Set<SelectionKey> cancelledKeys ()

Added in API level 1

Returns this channel's set of canceled selection keys.

Returns
Set<SelectionKey>

protected final void deregister (AbstractSelectionKey key)

Added in API level 1

Deletes the key from the channel's key set.

Parameters
key

protected final void end ()

Added in API level 1

Indicates the end of a code section that has been started with begin() and that includes a potentially blocking I/O operation.

protected abstract void implCloseSelector ()

Added in API level 1

Implements the closing of this channel.

Throws
IOException

protected abstract SelectionKey register (AbstractSelectableChannel channel, int operations, Object attachment)

Added in API level 1

Registers channel with this selector.

Parameters
operations the interest set of channel.
attachment the attachment for the selection key.
Returns
SelectionKey the key related to the channel and this selector.