net.sf.hajdbc.distributed

Interface CommandDispatcher<C>

Type Parameters:

C - the command context type

All Superinterfaces:

Lifecycle

All Known Implementing Classes:

JGroupsCommandDispatcher

public interface CommandDispatcher<C>
extends Lifecycle

RPC dispatcher that uses the command pattern.

Author:

Paul Ferraro

Method Summary

Methods

Modifier and Type	Method and Description
<R> R	execute(Command<R,C> command, Member member) Execute the specified command on the specified member.
<R> Map<Member,R>	executeAll(Command<R,C> command, Member... excludedMembers) Execute the specified command on all members, potentially excluding some.
Member	getCoordinator() Returns the group coordinator.
Member	getLocal() Returns the local member.

Methods inherited from interface net.sf.hajdbc.Lifecycle

start, stop

Method Detail

executeAll

<R> Map<Member,R> executeAll(Command<R,C> command,
                           Member... excludedMembers)

Execute the specified command on all members, potentially excluding some.

Type Parameters:

R - the return value type

Parameters:

command - the command to execute

excludedMembers - list of members to optionally exclude

Returns:

a map of command execution results per member.

execute

<R> R execute(Command<R,C> command,
            Member member)

Execute the specified command on the specified member.

Type Parameters:

R - the return value type

Parameters:

command - the command to execute

member - the member on which to execute the command

Returns:

the result of the command execution

getLocal

Member getLocal()

Returns the local member.

Returns:

the local member.

getCoordinator

Member getCoordinator()

Returns the group coordinator.

Returns:

the group coordinator.