org.hotswap.agent.command

Class MergeableCommand

java.lang.Object

org.hotswap.agent.command.MergeableCommand

All Implemented Interfaces:

Command

Direct Known Subclasses:

ReflectionCommand, WatchEventCommand

public abstract class MergeableCommand
extends Object
implements Command

Command that can merge multiple commands into a single execution.

${Scheduler.schedule()} compares existing scheduled commands with equlas() method and if the command exists, it is replaced by new command and timer is restarted - effectively forgetting firs command. This implementation provides a way to get all merged commands and process them in the execution. It is also an interface to override merge method to provide custom behaviour.

For example - merge multiple MODIFY events into one, or if DELETE + CREATE events are scheduled, merge them into single MODIFY event.

Constructor Summary

Constructors

Constructor and Description
MergeableCommand()

Method Summary

Modifier and Type	Method and Description
List<Command>	getMergedCommands()
Command	merge(Command other) Merge commands
List<Command>	popMergedCommands() Return merged commands and clear internal list

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.hotswap.agent.command.Command

executeCommand

Constructor Detail

MergeableCommand

public MergeableCommand()

Method Detail

merge

public Command merge(Command other)

Merge commands

Parameters:

other - the other command to merge to

Returns:

merge result, by default returns this instance.

getMergedCommands

public List<Command> getMergedCommands()

popMergedCommands

public List<Command> popMergedCommands()

Return merged commands and clear internal list

Returns:

the list of merged commands