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public abstract class AbstractSelector
extends Selector

• Constructor Summary

  Constructors

  Modifier	Constructor and Description
  protected	AbstractSelector(SelectorProvider selectorProvider)

• Method Summary

  Methods

  Modifier and Type	Method and Description
  protected void	begin() Indicates the beginning of a code section that includes an I/O operation that is potentially blocking.
  protected Set<SelectionKey>	cancelledKeys() Returns this channel's set of canceled selection keys.
  void	close() Closes this selector.
  protected void	deregister(AbstractSelectionKey key) Deletes the key from the channel's key set.
  protected void	end() 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() Implements the closing of this channel.
  boolean	isOpen() Returns true if this selector is open.
  SelectorProvider	provider() Returns this selector's provider.
  protected abstract SelectionKey	register(AbstractSelectableChannel channel, int operations, Object attachment) Registers channel with this selector.

  • Methods inherited from class java.nio.channels.Selector

    keys, open, select, select, selectedKeys, selectNow, wakeup

  • Methods inherited from class java.lang.Object

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

• Constructor Detail

  • AbstractSelector

    protected AbstractSelector(SelectorProvider selectorProvider)

• Method Detail

  • close

    public final void close()
                     throws IOException

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

    Specified by:

    close in class Selector

    Throws:

    IOException - if an I/O error occurs.

  • implCloseSelector

    protected abstract void implCloseSelector()
                                       throws IOException

    Implements the closing of this channel.

    Throws:

    IOException

  • isOpen

    public final boolean isOpen()

    Returns true if this selector is open.

    Specified by:

    isOpen in class Selector

    Returns:

    true if this selector is not closed, false otherwise.

  • provider

    public final SelectorProvider provider()

    Returns this selector's provider.

    Specified by:

    provider in class Selector

    Returns:

    the provider of this selector.

  • cancelledKeys

    protected final Set<SelectionKey> cancelledKeys()

    Returns this channel's set of canceled selection keys.

  • register

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

    Registers channel with this selector.

    Parameters:

    operations - the interest set of channel.

    attachment - the attachment for the selection key.

    Returns:

    the key related to the channel and this selector.

  • deregister

    protected final void deregister(AbstractSelectionKey key)

    Deletes the key from the channel's key set.

  • begin

    protected final void begin()

    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.

  • end

    protected 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.