Examples of org.apache.commons.scxml2.SCXMLIOProcessor

org.apache.commons.scxml2.model.SimpleTransition
The SCXML I/O Processor provides the interface for either an internal process or an external system or invoked child SCXML process ( {@link org.apache.commons.scxml2.invoke.Invoker}) to send events into the SCXML processor queue.

     * @param errorReporter The error reporter for this state machine instance.
     * @throws ModelException if an attempt is made to set a null value for the error reporter
     */
    protected void setErrorReporter(ErrorReporter errorReporter) throws ModelException {
        if (errorReporter == null) {
            throw new ModelException(ERR_NO_ERROR_REPORTER);
        }
        this.errorReporter = errorReporter;
    }

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     * @param stateMachine The state machine for this instance
     * @throws ModelException if an attempt is made to set a null value for the state machine
     */
    protected void setStateMachine(SCXML stateMachine) throws ModelException {
        if (stateMachine == null) {
            throw new ModelException(ERR_NO_STATE_MACHINE);
        }
        if (this.stateMachine != null && initialized) {
            this.stateMachine = stateMachine;
            // change of state machine after initialization: re-initialize
            initialize();

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        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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        // Marker to indicate generated document
        writer.writeComment(XMLNS_COMMONS_SCXML);


        // Write global script if defined
        if (scxml.getGlobalScript() != null) {
            Script s = scxml.getGlobalScript();
            writer.writeStartElement(XMLNS_SCXML, ELEM_SCRIPT);
            writer.writeCData(s.getScript());
            writer.writeEndElement();
        }


        // Children
        writeDatamodel(writer, scxml.getDatamodel());

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                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());
                writer.writeEndElement();
            } else if (a instanceof If) {
                writeIf(writer, (If) a);
            } else if (a instanceof Else) {
                writer.writeEmptyElement(ELEM_ELSE);

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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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