Examples of org.apache.commons.scxml2.TriggerEvent

org.apache.commons.scxml2.semantics.SCXMLSemanticsImpl
A class representing an event. Specific event types have been defined in reference to SCXML. NOTE: Instances are {@link Serializable} as long as the associatedpayload, if any, is {@link Serializable}.

        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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        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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     */
    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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