org.eclipse.vtp.framework.spi
Interface IProcessEngine

All Known Implementing Classes:

ProcessEngine

public interface IProcessEngine

A process engine that can create process instances from descriptors.

Author:

Lonnie Pryor

Method Summary

void	addProcessEngineObserver(IProcessEngineObserver observer) Adds an observer that will be notified of changes to this process engine.
IProcess	createProcess(IProcessDefinition definition, IProcessDescriptor descriptor) Creates a new process instance from the specified descriptor.
void	removeProcessEngineObserver(IProcessEngineObserver observer) Removes an observer form the list of this process engine's observers.

Method Detail

createProcess

IProcess createProcess(IProcessDefinition definition,
                       IProcessDescriptor descriptor)
                       throws java.lang.NullPointerException

Creates a new process instance from the specified descriptor.

Parameters:

definition - The definition of the process to create.

descriptor - The descriptor of the process to create.

Returns:

A new process instance from the specified descriptor.

Throws:

java.lang.NullPointerException - If the specified definition is null.

java.lang.NullPointerException - If the specified descriptor is null.

addProcessEngineObserver

void addProcessEngineObserver(IProcessEngineObserver observer)
                              throws java.lang.NullPointerException

Adds an observer that will be notified of changes to this process engine.

Parameters:

observer - The observer to add.

Throws:

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

removeProcessEngineObserver

void removeProcessEngineObserver(IProcessEngineObserver observer)
                                 throws java.lang.NullPointerException

Removes an observer form the list of this process engine's observers.

Parameters:

observer - The observer to remove.

Throws:

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