Examples of org.apache.commons.scxml2.model.TransitionalState

org.apache.commons.scxml2.semantics.SCXMLSemanticsImpl
An abstract base class for state elements in SCXML that can be transitioned out from, such as State or Parallel.

        if (tts.isEmpty()) {
            // 'next' is a space separated list of transition target IDs
            StringTokenizer ids = new StringTokenizer(next);
            while (ids.hasMoreTokens()) {
                String id = ids.nextToken();
                TransitionTarget tt = targets.get(id);
                if (tt == null) {
                    logAndThrowModelError(ERR_TARGET_NOT_FOUND, new Object[] {
                            id });
                }
                tts.add(tt);

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                }
                msg.append(']');
            }
        } else if (errCode == ErrorConstants.EXPRESSION_ERROR) {
            if (errCtx instanceof Executable) {
                TransitionTarget parent = ((Executable) errCtx).getParent();
                msg.append("Expression error inside " + LogUtils.getTTPath(parent));
            }
            else if (errCtx instanceof Data) {
                // Data expression error
                msg.append("Expression error for data element with id "+((Data)errCtx).getId());

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     */
    private static int initDocumentOrder(final List<EnterableState> states, int nextOrder) {
        for (EnterableState state : states) {
            state.setOrder(nextOrder++);
            if (state instanceof TransitionalState) {
                TransitionalState ts = (TransitionalState)state;
                for (Transition t : ts.getTransitionsList()) {
                    t.setOrder(nextOrder++);
                }
                nextOrder = initDocumentOrder(ts.getChildren(), nextOrder);
            }
        }
        return nextOrder;
    }

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     */
    private static int initObservables(final List<EnterableState>states, int nextObservableId) {
        for (EnterableState es : states) {
            es.setObservableId(nextObservableId++);
            if (es instanceof TransitionalState) {
                TransitionalState ts = (TransitionalState)es;
                if (ts instanceof State) {
                    State s = (State)ts;
                    if (s.getInitial() != null && s.getInitial().getTransition() != null) {
                        s.getInitial().getTransition().setObservableId(nextObservableId++);
                    }
                }
                for (Transition t : ts.getTransitionsList()) {
                    t.setObservableId(nextObservableId++);
                }
                for (History h : ts.getHistory()) {
                    h.setObservableId(nextObservableId++);
                    if (h.getTransition() != null) {
                        h.getTransition().setObservableId(nextObservableId++);
                    }
                }
                nextObservableId = initObservables(ts.getChildren(), nextObservableId);
            }
        }
        return nextObservableId;
    }

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     * @param exitSet The set for adding the states to exit to
     * @param configuration The current configuration of the state machine ({@link Status#getAllStates()}).
     */
    public void computeExitSet(SimpleTransition transition, Set<EnterableState> exitSet, Set<EnterableState> configuration) {
        if (!transition.getTargets().isEmpty()) {
            TransitionalState transitionDomain = transition.getTransitionDomain();
            if (transitionDomain == null) {
                // root transition: every active state will be exited
                exitSet.addAll(configuration);
            }
            else {

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     * @param allStates The current set of all active states in the state machine
     */
    public void recordHistory(final Step step, final Set<EnterableState> states, final Set<EnterableState> allStates) {
        for (EnterableState es : step.getExitSet()) {
            if (es instanceof TransitionalState && ((TransitionalState)es).hasHistory()) {
                TransitionalState ts = (TransitionalState)es;
                Set<EnterableState> shallow = null;
                Set<EnterableState> deep = null;
                for (History h : ts.getHistory()) {
                    if (h.isDeep()) {
                        if (deep == null) {
                            //calculate deep history for a given state once
                            deep = new HashSet<EnterableState>();
                            for (EnterableState ott : states) {
                                if (ott.isDescendantOf(es)) {
                                    deep.add(ott);
                                }
                            }
                        }
                        step.getNewHistoryConfigurations().put(h, deep);
                    } else {
                        if (shallow == null) {
                            //calculate shallow history for a given state once
                            shallow = new HashSet<EnterableState>(ts.getChildren());
                            shallow.retainAll(allStates);
                        }
                        step.getNewHistoryConfigurations().put(h, shallow);
                    }
                }

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        }
        for (History h : historyTargets) {
            addDescendantStatesToEnter(exctx, step, h);
        }
        for (SimpleTransition st : step.getTransitList()) {
            TransitionalState ancestor = st.getTransitionDomain();
            for (TransitionTarget tt : st.getTargets()) {
                addAncestorStatesToEnter(exctx, step, tt, ancestor);
            }
        }
    }

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                    }
                    else {
                        es = es.getParent();
                    }
                }
                TransitionalState state = (TransitionalState)es;
                TransitionalState current = state;
                int ancestorIndex = state.getNumberOfAncestors()-1;
                boolean transitionMatched = false;
                do {
                    for (Transition transition : current.getTransitionsList()) {
                        if (transitionMatched = matchTransition(exctx, transition, eventName)) {
                            enabledTransitions.add(transition);
                            break;
                        }
                    }

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     */
    private static void readVar(final XMLStreamReader reader, final Configuration configuration,
                                final Executable executable, final ActionsContainer parent)
            throws XMLStreamException {


        Var var = new Var();
        var.setName(readAV(reader, ATTR_NAME));
        var.setExpr(readAV(reader, ATTR_EXPR));
        readNamespaces(configuration, var);
        var.setParent(executable);
        if (parent != null) {
            parent.addAction(var);
        } else {
            executable.addAction(var);
        }

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     * @param semantics The SCXML semantics
     */
    public SCXMLExecutor(final Evaluator expEvaluator,
                         final EventDispatcher evtDisp, final ErrorReporter errRep,
                         final SCXMLSemantics semantics) {
        this.semantics = semantics != null ? semantics : new SCXMLSemanticsImpl();
        this.exctx = new SCXMLExecutionContext(this, expEvaluator, evtDisp, errRep);
    }

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