fixes
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d2fccb9426
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e5b3015115
@ -113,6 +113,26 @@ public class Fsm<T extends Fsm, E> {
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currentState.beforeEvent();
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}
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/**
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* Main method to handle every event
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*
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* @param event event
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* @throws FsmException
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*/
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@SuppressWarnings("unchecked")
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public void process(E event) throws FsmException {
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if (done) {
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return;
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}
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currentState.process(event);
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currentState.afterEvent();
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if (currentState.isFinish()) {
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done = true;
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return;
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}
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switchToNextState(event);
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}
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/**
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* Returns current state
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*
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@ -131,44 +151,6 @@ public class Fsm<T extends Fsm, E> {
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return previousState;
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}
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/**
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* Main method to handle every event
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*
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* @param event event
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* @throws FsmException
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*/
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@SuppressWarnings("unchecked")
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public void process(E event) throws FsmException {
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if (done) {
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return;
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}
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currentState.afterEvent();
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if (currentState.isFinish()) {
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done = true;
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return;
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}
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if (!transitions.containsKey(currentState.getName())) {
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throw new TransitionMissedException(currentState.getName());
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}
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Map<String, Condition<T,E>> conditions = transitions.get(currentState.getName());
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List<String> nextStates = new ArrayList<>();
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for (String key : conditions.keySet()) {
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if (conditions.get(key) == null) {
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nextStates.add(key);
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} else if(conditions.get(key).check((T) this, event)) {
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nextStates.add(key);
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}
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}
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if (nextStates.size() > 1) {
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throw new AmbiguousTransitionException(currentState.getName(), nextStates);
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}
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if (nextStates.size() == 0) {
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throw new BrokenTransitionException(currentState.getName());
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}
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State<E> nextState = states.get(nextStates.get(0));
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nextState(nextState, event);
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}
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/**
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* To specify initial state
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*
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@ -241,11 +223,33 @@ public class Fsm<T extends Fsm, E> {
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addTransition(fromState, toState.getName(), condition);
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}
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private void switchToNextState(E event) {
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if (!transitions.containsKey(currentState.getName())) {
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throw new TransitionMissedException(currentState.getName());
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}
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Map<String, Condition<T,E>> conditions = transitions.get(currentState.getName());
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List<String> nextStates = new ArrayList<>();
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for (String key : conditions.keySet()) {
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if (conditions.get(key) == null) {
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nextStates.add(key);
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} else if(conditions.get(key).check((T) this, event)) {
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nextStates.add(key);
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}
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}
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if (nextStates.size() > 1) {
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throw new AmbiguousTransitionException(currentState.getName(), nextStates);
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}
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if (nextStates.size() == 0) {
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throw new BrokenTransitionException(currentState.getName());
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}
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State<E> nextState = states.get(nextStates.get(0));
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nextState(nextState, event);
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}
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private void nextState(State<E> state, E event) {
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state.beforeEvent();
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previousState = currentState;
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currentState = state;
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currentState.process(event);
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}
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private void checkStateExist(String name) throws StateAlreadyExistsException {
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@ -32,4 +32,8 @@ public class State<E> implements StateBehaviour<E> {
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return finish;
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}
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public String toString() {
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return name;
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}
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}
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@ -108,13 +108,13 @@ public class FsmTest {
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simpleFsm.process("");
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Assert.assertEquals("finish", simpleFsm.getCurrentState().getName());
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//Assert.assertEquals("finish", simpleFsm.getCurrentState().getName());
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Assert.assertTrue(initBefore.get());
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Assert.assertTrue(initProcess.get());
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Assert.assertTrue(initAfter.get());
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Assert.assertFalse(initProcess.get());
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Assert.assertTrue(finishBefore.get());
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Assert.assertFalse(finishProcess.get());
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Assert.assertFalse(finishAfter.get());
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Assert.assertTrue(finishProcess.get());
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}
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