net.sf.jailer.util

Class CancellationHandler

java.lang.Object

net.sf.jailer.util.CancellationHandler

public class CancellationHandler
extends Object

Handles cancellation request of the user and cancels database requests.

Author:

Ralf Wisser

Constructor Summary

Constructors

Constructor and Description
CancellationHandler()

Method Summary

Methods

Modifier and Type	Method and Description
static void	begin(Statement statement, Object context) Indicates that a statement is going to be executed.
static void	cancel(Object context) Requests cancellation.
static void	cancelSilently(Object context) Requests cancellation without logging.
static void	checkForCancellation(Object context) Checks for cancellation.
static void	end(Statement statement, Object context) Indicates that a statement has been executed.
static void	reset(Object context) Resets the handler.

Methods inherited from class java.lang.Object

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

Constructor Detail

CancellationHandler

public CancellationHandler()

Method Detail

reset

public static void reset(Object context)

Resets the handler.

Parameters:

context - cancellation context, null for default context

cancel

public static void cancel(Object context)

Requests cancellation.

Parameters:

context - cancellation context, null for default context

cancelSilently

public static void cancelSilently(Object context)

Requests cancellation without logging.

Parameters:

context - cancellation context, null for default context

begin

public static void begin(Statement statement,
         Object context)

Indicates that a statement is going to be executed.

Parameters:

context - cancellation context, null for default context

statement - the statement

end

public static void end(Statement statement,
       Object context)

Indicates that a statement has been executed.

Parameters:

statement - the statement

context - cancellation context, null for default context

checkForCancellation

public static void checkForCancellation(Object context)
                                 throws CancellationException

Checks for cancellation.

Parameters:

context - cancellation context, null for default context

Throws:

CancellationException - if cancellation have been requested