org.eclipse.vtp.framework.spi
Interface ICommand

All Known Subinterfaces:

IRunnableCommand

All Known Implementing Classes:

BridgeMessageCommand, ControllerCommand, ConversationCommand, DataRequestCommand, EndMessageCommand, ExitCommand, ExternalReferenceCommand, FinalCommand, ForwardCommand, IncludeCommand, InitialCommand, InputRequestCommand, MetaDataMessageCommand, MetaDataRequestCommand, OutputMessageCommand, SelectionRequestCommand, TransferMessageCommand

public interface ICommand

A command that can be enqueued with the external process controller.

Author:

Lonnie Pryor

Method Summary

java.lang.Object	accept(ICommandVisitor visitor) Attempts to invoke an implementation-dependent visit method on the supplied visitor, calling ICommandVisitor.visitUnknown(ICommand) if such a method is not available.
java.lang.Object	exportContents() Exports the contents of this command to a simple structure of arrays and serializable values from java.lang.
void	importContents(java.lang.Object contents) Configures the contents of this command with a structure previously returned from exportContents().

Method Detail

accept

java.lang.Object accept(ICommandVisitor visitor)
                        throws java.lang.NullPointerException

Attempts to invoke an implementation-dependent visit method on the supplied visitor, calling ICommandVisitor.visitUnknown(ICommand) if such a method is not available.

Parameters:

visitor - The visitor to accept.

Returns:

The value returned by the visitor's visit method.

Throws:

java.lang.NullPointerException - If the supplied visitor is null.

exportContents

java.lang.Object exportContents()

Exports the contents of this command to a simple structure of arrays and serializable values from java.lang.

Returns:

A serializable structure this command can be re-constituted from.

importContents

void importContents(java.lang.Object contents)

Configures the contents of this command with a structure previously returned from exportContents().

Parameters:

contents - The exported contents structure to load from.