List of usage examples for org.springframework.statemachine.trigger Trigger evaluate
Mono<Boolean> evaluate(TriggerContext<S, E> context);
From source file:org.springframework.statemachine.support.AbstractStateMachine.java
protected synchronized boolean acceptEvent(Message<E> message) { if ((currentState != null && currentState.shouldDefer(message))) { log.info("Current state " + currentState + " deferred event " + message); stateMachineExecutor.queueDeferredEvent(message); return true; }// w w w. j ava 2s . c o m if ((currentState != null && currentState.sendEvent(message))) { return true; } if (log.isDebugEnabled()) { log.debug("Queue event " + message + " " + this); } for (Transition<S, E> transition : transitions) { State<S, E> source = transition.getSource(); Trigger<S, E> trigger = transition.getTrigger(); if (StateMachineUtils.containsAtleastOne(source.getIds(), currentState.getIds())) { if (trigger != null && trigger.evaluate(new DefaultTriggerContext<S, E>(message.getPayload()))) { stateMachineExecutor.queueEvent(message); return true; } } } // if we're about to not accept event, check defer again in case // state was changed between original check and now if ((currentState != null && currentState.shouldDefer(message))) { log.info("Current state " + currentState + " deferred event " + message); stateMachineExecutor.queueDeferredEvent(message); return true; } return false; }
From source file:org.springframework.statemachine.support.DefaultStateMachineExecutor.java
private boolean processEventQueue() { if (log.isDebugEnabled()) { log.debug("Process event queue, size=" + eventQueue.size()); }//from w w w.ja v a 2 s. c o m Message<E> queuedEvent = eventQueue.poll(); State<S, E> currentState = stateMachine.getState(); if (queuedEvent != null) { if ((currentState != null && currentState.shouldDefer(queuedEvent))) { log.info("Current state " + currentState + " deferred event " + queuedEvent); queueDeferredEvent(queuedEvent); return true; } for (Transition<S, E> transition : transitions) { State<S, E> source = transition.getSource(); Trigger<S, E> trigger = transition.getTrigger(); if (StateMachineUtils.containsAtleastOne(source.getIds(), currentState.getIds())) { if (trigger != null && trigger.evaluate(new DefaultTriggerContext<S, E>(queuedEvent.getPayload()))) { queueTrigger(trigger, queuedEvent); return true; } } } } return false; }
From source file:org.springframework.statemachine.support.DefaultStateMachineExecutor.java
private synchronized boolean processDeferList() { if (log.isDebugEnabled()) { log.debug("Process defer list, size=" + deferList.size()); }/*from w w w .j a v a 2 s.c o m*/ ListIterator<Message<E>> iterator = deferList.listIterator(); State<S, E> currentState = stateMachine.getState(); while (iterator.hasNext()) { Message<E> event = iterator.next(); if (currentState.shouldDefer(event)) { // if current state still defers, just continue with others continue; } for (Transition<S, E> transition : transitions) { State<S, E> source = transition.getSource(); Trigger<S, E> trigger = transition.getTrigger(); if (source.equals(currentState)) { if (trigger != null && trigger.evaluate(new DefaultTriggerContext<S, E>(event.getPayload()))) { triggerQueue.add(new TriggerQueueItem(trigger, event)); iterator.remove(); // bail out when first deferred message is causing a trigger to fire return true; } } } } return false; }