/**
 * Holds data relevant for an execution event.
 *
 */
class DefaultExecutionEvent implements ExecutionEvent {

    private final Type type;

    private final MavenSession session;

    private final MojoExecution mojoExecution;

    private final Exception exception;

    DefaultExecutionEvent(Type type, MavenSession session, MojoExecution mojoExecution, Exception exception) {

        ExecutionListener listener = session.getRequest().getExecutionListener();

        if (listener != null) {
            ExecutionEvent event = new DefaultExecutionEvent(eventType, session, mojoExecution, exception);

            switch (eventType) {
                case ProjectDiscoveryStarted:
                    listener.projectDiscoveryStarted(event);
                    break;