hu.webarticum.chm

Class CommandAggregation

java.lang.Object

hu.webarticum.chm.AbstractCommand

hu.webarticum.chm.CommandAggregation

All Implemented Interfaces:

Command, java.io.Closeable, java.lang.AutoCloseable

public class CommandAggregation
extends AbstractCommand
implements java.io.Closeable

Aggregation to execute and roll back multiple commands together.

Constructor Summary

Constructors

Constructor and Description
CommandAggregation()

Method Summary

Modifier and Type	Method and Description
protected boolean	_execute()
protected boolean	_rollBack()
boolean	add(Command command) Appends the given command to the end of this aggregation.
void	close() Closes this aggregation.
void	setExecuted(boolean executed) Explicitly sets executed status, do not perform any execution or roll-backing.

Methods inherited from class hu.webarticum.chm.AbstractCommand

execute, getTime, isExecuted, rollBack

Methods inherited from class java.lang.Object

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

Constructor Detail

CommandAggregation

public CommandAggregation()

Method Detail

add

public boolean add(Command command)

Appends the given command to the end of this aggregation. If this aggregation is closed, then operation will fail. If this aggregation is not closed and already executed, and the given command is not executed, then the command will be executed immediately.

Returns:

true if the command successfully appended

close

public void close()

Closes this aggregation. No new command can be added after this invoked.

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

setExecuted

public void setExecuted(boolean executed)

Description copied from interface: Command

Explicitly sets executed status, do not perform any execution or roll-backing. Use this if operation already performed elsewhere. It should not be invoked before this command executed (unless the command's implementation is properly prepared for this).

Specified by:

setExecuted in interface Command

Overrides:

setExecuted in class AbstractCommand

_execute

protected boolean _execute()

Specified by:

_execute in class AbstractCommand

_rollBack

protected boolean _rollBack()

Specified by:

_rollBack in class AbstractCommand