/*
* Copyright 2015 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.statemachine.ensemble;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.statemachine.StateMachine;
import org.springframework.statemachine.StateMachineContext;
import org.springframework.statemachine.support.LifecycleObjectSupport;
/**
* Support class for implementing {@link StateMachineEnsemble}s.
*
* @author Janne Valkealahti
*
* @param <S> the type of state
* @param <E> the type of event
*/
public abstract class StateMachineEnsembleObjectSupport<S, E> extends LifecycleObjectSupport implements StateMachineEnsemble<S, E> {
private final static Log log = LogFactory.getLog(StateMachineEnsembleObjectSupport.class);
private final CompositeEnsembleListener<S, E> ensembleListener = new CompositeEnsembleListener<S, E>();
@Override
public abstract void join(StateMachine<S, E> stateMachine);
@Override
public abstract void leave(StateMachine<S, E> stateMachine);
@Override
public void addEnsembleListener(EnsembleListener<S, E> listener) {
ensembleListener.register(listener);
}
@Override
public void removeEnsembleListener(EnsembleListener<S, E> listener) {
ensembleListener.unregister(listener);
}
protected void notifyJoined(StateMachine<S, E> stateMachine, StateMachineContext<S, E> context) {
ensembleListener.stateMachineJoined(stateMachine, context);
}
protected void notifyLeft(StateMachine<S, E> stateMachine, StateMachineContext<S, E> context) {
ensembleListener.stateMachineLeft(stateMachine, context);
}
protected void notifyError(StateMachineEnsembleException exception) {
ensembleListener.ensembleError(exception);
}
protected void notifyGranted(StateMachine<S, E> stateMachine) {
ensembleListener.ensembleLeaderGranted(stateMachine);
}
protected void notifyRevoked(StateMachine<S, E> stateMachine) {
ensembleListener.ensembleLeaderRevoked(stateMachine);
}
protected void notifyStateChanged(StateMachineContext<S, E> context) {
if (log.isTraceEnabled()) {
log.trace("Notify notifyStateChanged " + context);
}
ensembleListener.stateChanged(context);
}
}