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

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

        MessageFormat msgFormat = new MessageFormat(errType);
        String errMsg = msgFormat.format(msgArgs);
        org.apache.commons.logging.Log log = LogFactory.
                getLog(ModelUpdater.class);
        log.error(errMsg);
        throw new ModelException(errMsg);
    }

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                writer.writeStartElement(XMLNS_SCXML, ELEM_LOG);
                writeAV(writer, ATTR_LABEL, lg.getLabel());
                writeAV(writer, ATTR_EXPR, escapeXML(lg.getExpr()));
                writer.writeEndElement();
            } else if (a instanceof Raise) {
                Raise e = (Raise) a;
                writer.writeStartElement(XMLNS_SCXML, ELEM_RAISE);
                writeAV(writer, ATTR_EVENT, e.getEvent());
                writer.writeEndElement();
            } else if (a instanceof Script) {
                Script s = (Script) a;
                writer.writeStartElement(XMLNS_SCXML, ELEM_SCRIPT);
                writer.writeCData(s.getScript());

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    /**
     * {@inheritDoc}.
     */
    public void invoke(final String source, final Map<String, Object> params)
    throws InvokerException {
        SCXML scxml;
        try {
            scxml = SCXMLReader.read(new URL(source));
        } catch (ModelException me) {
            throw new InvokerException(me.getMessage(), me.getCause());
        } catch (IOException ioe) {

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     */
    static void updateSCXML(final SCXML scxml) throws ModelException {
        initDocumentOrder(scxml.getChildren(), 1);


        String initial = scxml.getInitial();
        SimpleTransition initialTransition = new SimpleTransition();


        if (initial != null) {


            initialTransition.setNext(scxml.getInitial());
            updateTransition(initialTransition, scxml.getTargets());


            if (initialTransition.getTargets().size() == 0) {
                logAndThrowModelError(ERR_SCXML_NO_INIT, new Object[] {
                        initial });
            }
        } else {
            // If 'initial' is not specified, the default initial state is
            // the first child state in document order.
            initialTransition.getTargets().add(scxml.getFirstChild());
        }


        scxml.setInitialTransition(initialTransition);
        Map<String, TransitionTarget> targets = scxml.getTargets();
        for (EnterableState es : scxml.getChildren()) {

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            Initial ini = state.getInitial();
            if (ini == null) {
                state.setFirst(children.get(0).getId());
                ini = state.getInitial();
            }
            SimpleTransition initialTransition = ini.getTransition();
            updateTransition(initialTransition, targets);
            Set<TransitionTarget> initialStates = initialTransition.getTargets();
            // we have to allow for an indirect descendant initial (targets)
            //check that initialState is a descendant of s
            if (initialStates.size() == 0) {
                logAndThrowModelError(ERR_STATE_BAD_INIT,
                        new Object[] {getName(state)});

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     */
    private static void updateHistory(final History history,
                                      final Map<String, TransitionTarget> targets,
                                      final TransitionalState parent)
            throws ModelException {
        SimpleTransition transition = history.getTransition();
        if (transition == null || transition.getNext() == null) {
            logAndThrowModelError(ERR_HISTORY_NO_DEFAULT,
                    new Object[] {history.getId(), getName(parent)});
        }
        else {
            updateTransition(transition, targets);
            Set<TransitionTarget> historyStates = transition.getTargets();
            if (historyStates.size() == 0) {
                logAndThrowModelError(ERR_STATE_NO_HIST,
                        new Object[] {getName(parent)});
            }
            for (TransitionTarget historyState : historyStates) {

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        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++);
                }

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     */
    private static void readState(final XMLStreamReader reader, final Configuration configuration, final SCXML scxml,
                                  final TransitionalState parent)
            throws IOException, ModelException, XMLStreamException {


        State state = new State();
        state.setId(readOrGeneratedTransitionTargetId(reader, scxml, ELEM_STATE));
        String initial = readAV(reader, ATTR_INITIAL);
        if (initial != null) {
            state.setFirst(initial);
        }
        String src = readAV(reader, ATTR_SRC);
        if (src != null) {
            String source = src;
            Configuration copy = new Configuration(configuration);
            if (copy.parent == null) {
                copy.parent = scxml;
            }
            if (configuration.pathResolver != null) {
                source = configuration.pathResolver.resolvePath(src);
                copy.pathResolver = configuration.pathResolver.getResolver(src);
            }
            readTransitionalStateSrc(copy, source, state);
        }


        if (parent == null) {
            scxml.addChild(state);
        } else if (parent instanceof State) {
            ((State)parent).addChild(state);
        }
        else {
            ((Parallel)parent).addChild(state);
        }
        scxml.addTarget(state);
        if (configuration.parent != null) {
            configuration.parent.addTarget(state);
        }


        loop : while (reader.hasNext()) {
            String name, nsURI;
            switch (reader.next()) {
                case XMLStreamConstants.START_ELEMENT:
                    pushNamespaces(reader, configuration);
                    nsURI = reader.getNamespaceURI();
                    name = reader.getLocalName();
                    if (XMLNS_SCXML.equals(nsURI)) {
                        if (ELEM_TRANSITION.equals(name)) {
                            state.addTransition(readTransition(reader, configuration));
                        } else if (ELEM_STATE.equals(name)) {
                            readState(reader, configuration, scxml, state);
                        } else if (ELEM_INITIAL.equals(name)) {
                            readInitial(reader, configuration, state);
                        } else if (ELEM_FINAL.equals(name)) {

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        // Pull in the parts of the external document as needed
        if (fragment == null) {
            // All targets pulled in since its not a src fragment
            if (ts instanceof State) {
                State s = (State) ts;
                Initial ini = new Initial();
                SimpleTransition t = new SimpleTransition();
                t.setNext(externalSCXML.getInitial());
                ini.setTransition(t);
                s.setInitial(ini);
                for (EnterableState child : externalSCXML.getChildren()) {
                    s.addChild(child);
                }
                s.setDatamodel(externalSCXML.getDatamodel());
            } else if (ts instanceof Parallel) {
                // TODO src attribute for <parallel>
            }
        } else {
            // Need to pull in only descendent targets
            Object source = externalSCXML.getTargets().get(fragment);
            if (source == null) {
                MessageFormat msgFormat = new MessageFormat(ERR_STATE_SRC_FRAGMENT);
                String errMsg = msgFormat.format(new Object[] {src});
                throw new ModelException(errMsg);
            }
            if (source instanceof State && ts instanceof State) {
                State s = (State) ts;
                State include = (State) source;
                for (OnEntry onentry : include.getOnEntries()) {
                    s.addOnEntry(onentry);
                }
                for (OnExit onexit : include.getOnExits()) {
                    s.addOnExit(onexit);
                }
                s.setDatamodel(include.getDatamodel());
                List<History> histories = include.getHistory();
                for (History h : histories) {
                    s.addHistory(h);
                    configuration.parent.addTarget(h);
                }
                for (EnterableState child : include.getChildren()) {
                    s.addChild(child);
                    configuration.parent.addTarget(child);
                    readInExternalTargets(configuration.parent, child);
                }
                for (Invoke invoke : include.getInvokes()) {
                    s.addInvoke(invoke);
                }
                if (include.getInitial() != null) {
                    s.setInitial(include.getInitial());
                }
                List<Transition> transitions = include.getTransitionsList();
                for (Transition t : transitions) {
                    s.addTransition(t);
                }
            } else if (ts instanceof Parallel && source instanceof Parallel) {
                // TODO src attribute for <parallel>

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     *                        errors in the SCXML document that may not be identified by the schema).
     */
    private static Transition readTransition(final XMLStreamReader reader, final Configuration configuration)
            throws XMLStreamException, ModelException {


        Transition transition = new Transition();
        transition.setCond(readAV(reader, ATTR_COND));
        transition.setEvent(readAV(reader, ATTR_EVENT));
        transition.setNext(readAV(reader, ATTR_TARGET));
        String type = readAV(reader, ATTR_TYPE);
        if (type != null) {
            try {
                transition.setType(TransitionType.valueOf(type));
            }
            catch (IllegalArgumentException e) {
                MessageFormat msgFormat = new MessageFormat(ERR_UNSUPPORTED_TRANSITION_TYPE);
                String errMsg = msgFormat.format(new Object[] {type, reader.getLocation()});
                throw new ModelException(errMsg);

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