Package org.apache.commons.scxml.model

Examples of org.apache.commons.scxml.model.TransitionTarget

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        public final void end(final String namespace, final String name) {
            if (scxml == null) {
                scxml = (SCXML) getDigester()
                        .peek(getDigester().getCount() - 1);
            }
            TransitionTarget tt = (TransitionTarget) getDigester().peek();
            scxml.addTarget(tt);
        }
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                        s.addHistory(h);
                        parent.addTarget(h);
                    }
                    Iterator childIter = include.getChildren().values().iterator();
                    while (childIter.hasNext()) {
                        TransitionTarget tt = (TransitionTarget) childIter.next();
                        s.addChild(tt);
                        parent.addTarget(tt);
                        addTargets(parent, tt);
                    }
                    s.setInvoke(include.getInvoke());
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                parent.addTarget(h);
            }
            if (tt instanceof State) {
                Iterator childIter = ((State) tt).getChildren().values().iterator();
                while (childIter.hasNext()) {
                    TransitionTarget child = (TransitionTarget) childIter.next();
                    parent.addTarget(child);
                    addTargets(parent, child);
                }
            } else if (tt instanceof Parallel) {
                Iterator childIter = ((Parallel) tt).getChildren().iterator();
                while (childIter.hasNext()) {
                    TransitionTarget child = (TransitionTarget) childIter.next();
                    parent.addTarget(child);
                    addTargets(parent, child);
                }
            }
        }
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         */
        public final void begin(final String namespace, final String name,
                final Attributes attributes) {
            Finalize finalize = (Finalize) getDigester().peek();
            // state/invoke/finalize --> peek(2)
            TransitionTarget tt = (TransitionTarget) getDigester().peek(2);
            finalize.setParent(tt);
        }
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     */
   static void updateSCXML(final SCXML scxml) throws ModelException {
       String initial = scxml.getInitial();
       //we have to use getTargets() here since the initialTarget can be
       //an indirect descendant
       TransitionTarget initialTarget = (TransitionTarget) scxml.getTargets().
           get(initial);
       if (initialTarget == null) {
           // Where do we, where do we go?
           logAndThrowModelError(ERR_SCXML_NO_INIT, new Object[] {
               initial });
       }
       scxml.setInitialTarget(initialTarget);
       Map targets = scxml.getTargets();
       Map children = scxml.getChildren();
       Iterator i = children.keySet().iterator();
       while (i.hasNext()) {
           TransitionTarget tt = (TransitionTarget) children.get(i.next());
           if (tt instanceof State) {
               updateState((State) tt, targets);
           } else {
               updateParallel((Parallel) tt, targets);
           }
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            if (initialStates.size() == 0) {
                logAndThrowModelError(ERR_STATE_BAD_INIT,
                    new Object[] {getStateName(s)});
            } else {
                for (int i = 0; i < initialStates.size(); i++) {
                    TransitionTarget initialState = (TransitionTarget)
                        initialStates.get(i);
                    if (!SCXMLHelper.isDescendant(initialState, s)) {
                        logAndThrowModelError(ERR_STATE_BAD_INIT,
                            new Object[] {getStateName(s)});
                    }
                }
            }
        }
        List histories = s.getHistory();
        Iterator histIter = histories.iterator();
        while (histIter.hasNext()) {
            if (s.isSimple()) {
                logAndThrowModelError(ERR_HISTORY_SIMPLE_STATE,
                    new Object[] {getStateName(s)});
            }
            History h = (History) histIter.next();
            Transition historyTransition = h.getTransition();
            if (historyTransition == null) {
                // try to assign initial as default
                if (initialStates != null && initialStates.size() > 0) {
                    for (int i = 0; i < initialStates.size(); i++) {
                        if (initialStates.get(i) instanceof History) {
                            logAndThrowModelError(ERR_HISTORY_BAD_DEFAULT,
                                new Object[] {h.getId(), getStateName(s)});
                        }
                    }
                    historyTransition = new Transition();
                    historyTransition.getTargets().addAll(initialStates);
                    h.setTransition(historyTransition);
                } else {
                    logAndThrowModelError(ERR_HISTORY_NO_DEFAULT,
                        new Object[] {h.getId(), getStateName(s)});
                }
            }
            updateTransition(historyTransition, targets);
            List historyStates = historyTransition.getTargets();
            if (historyStates.size() == 0) {
                logAndThrowModelError(ERR_STATE_NO_HIST,
                    new Object[] {getStateName(s)});
            }
            for (int i = 0; i < historyStates.size(); i++) {
                TransitionTarget historyState = (TransitionTarget)
                    historyStates.get(i);
                if (!h.isDeep()) {
                    if (!c.containsValue(historyState)) {
                        logAndThrowModelError(ERR_STATE_BAD_SHALLOW_HIST,
                            new Object[] {getStateName(s)});
                    }
                } else {
                    if (!SCXMLHelper.isDescendant(historyState, s)) {
                        logAndThrowModelError(ERR_STATE_BAD_DEEP_HIST,
                            new Object[] {getStateName(s)});
                    }
                }
            }
        }
        List t = s.getTransitionsList();
        for (int i = 0; i < t.size(); i++) {
            Transition trn = (Transition) t.get(i);
            updateTransition(trn, targets);
        }
        Parallel p = s.getParallel(); //TODO: Remove in v1.0
        Invoke inv = s.getInvoke();
        if ((inv != null && p != null)
                || (inv != null && !c.isEmpty())
                || (p != null && !c.isEmpty())) {
            logAndThrowModelError(ERR_STATE_BAD_CONTENTS,
                new Object[] {getStateName(s)});
        }
        if (p != null) {
            updateParallel(p, targets);
        } else if (inv != null) {
            String ttype = inv.getTargettype();
            if (ttype == null || ttype.trim().length() == 0) {
                logAndThrowModelError(ERR_INVOKE_NO_TARGETTYPE,
                    new Object[] {getStateName(s)});
            }
            String src = inv.getSrc();
            boolean noSrc = (src == null || src.trim().length() == 0);
            String srcexpr = inv.getSrcexpr();
            boolean noSrcexpr = (srcexpr == null
                                 || srcexpr.trim().length() == 0);
            if (noSrc && noSrcexpr) {
                logAndThrowModelError(ERR_INVOKE_NO_SRC,
                    new Object[] {getStateName(s)});
            }
            if (!noSrc && !noSrcexpr) {
                logAndThrowModelError(ERR_INVOKE_AMBIGUOUS_SRC,
                    new Object[] {getStateName(s)});
            }
        } else {
            Iterator j = c.keySet().iterator();
            while (j.hasNext()) {
                TransitionTarget tt = (TransitionTarget) c.get(j.next());
                if (tt instanceof State) {
                    updateState((State) tt, targets);
                } else if (tt instanceof Parallel) {
                    updateParallel((Parallel) tt, targets);
                }
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        if (tts.size() == 0) {
            // 'next' is a space separated list of transition target IDs
            StringTokenizer ids = new StringTokenizer(next);
            while (ids.hasMoreTokens()) {
                String id = ids.nextToken();
                TransitionTarget tt = (TransitionTarget) targets.get(id);
                if (tt == null) {
                    logAndThrowModelError(ERR_TARGET_NOT_FOUND, new Object[] {
                        id });
                }
                tts.add(tt);
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     */
    private static boolean verifyTransitionTargets(final List tts) {
        if (tts.size() <= 1) { // No contention
            return true;
        }
        TransitionTarget lca = SCXMLHelper.getLCA((TransitionTarget)
            tts.get(0), (TransitionTarget) tts.get(1));
        if (lca == null || !(lca instanceof Parallel)) {
            return false; // Must have a Parallel LCA
        }
        Parallel p = (Parallel) lca;
        Set regions = new HashSet();
        for (int i = 0; i < tts.size(); i++) {
            TransitionTarget tt = (TransitionTarget) tts.get(i);
            while (tt.getParent() != p) {
                tt = tt.getParent();
            }
            if (!regions.add(tt)) {
                return false; // One per region
            }
        }
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     */
    public void determineInitialStates(final SCXML input, final Set targets,
            final List entryList, final ErrorReporter errRep,
            final SCInstance scInstance)
            throws ModelException {
        TransitionTarget tmp = input.getInitialTarget();
        if (tmp == null) {
            errRep.onError(ErrorConstants.NO_INITIAL,
                    "SCXML initialstate is missing!", input);
        } else {
            targets.add(tmp);
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        NotificationRegistry nr = scInstance.getNotificationRegistry();
        Collection internalEvents = step.getAfterStatus().getEvents();
        Map invokers = scInstance.getInvokers();
        // ExecutePhaseActions / OnExit
        for (Iterator i = step.getExitList().iterator(); i.hasNext();) {
            TransitionTarget tt = (TransitionTarget) i.next();
            OnExit oe = tt.getOnExit();
            try {
                for (Iterator onExitIter = oe.getActions().iterator();
                        onExitIter.hasNext();) {
                    ((Action) onExitIter.next()).execute(evtDispatcher,
                        errRep, scInstance, appLog, internalEvents);
                }
            } catch (SCXMLExpressionException e) {
                errRep.onError(ErrorConstants.EXPRESSION_ERROR, e.getMessage(),
                        oe);
            }
            // check if invoke is active in this state
            if (invokers.containsKey(tt)) {
                Invoker toCancel = (Invoker) invokers.get(tt);
                try {
                    toCancel.cancel();
                } catch (InvokerException ie) {
                    TriggerEvent te = new TriggerEvent(tt.getId()
                        + ".invoke.cancel.failed", TriggerEvent.ERROR_EVENT);
                    internalEvents.add(te);
                }
                // done here, don't wait for cancel response
                invokers.remove(tt);
            }
            nr.fireOnExit(tt, tt);
            nr.fireOnExit(stateMachine, tt);
            TriggerEvent te = new TriggerEvent(tt.getId() + ".exit",
                    TriggerEvent.CHANGE_EVENT);
            internalEvents.add(te);
        }
        // ExecutePhaseActions / Transitions
        for (Iterator i = step.getTransitList().iterator(); i.hasNext();) {
            Transition t = (Transition) i.next();
            try {
                for (Iterator transitIter = t.getActions().iterator();
                        transitIter.hasNext();) {
                    ((Action) transitIter.next()).execute(evtDispatcher,
                        errRep, scInstance, appLog, internalEvents);
                }
            } catch (SCXMLExpressionException e) {
                errRep.onError(ErrorConstants.EXPRESSION_ERROR,
                    e.getMessage(), t);
            }
            List rtargets = t.getRuntimeTargets();
            for (int j = 0; j < rtargets.size(); j++) {
                TransitionTarget tt = (TransitionTarget) rtargets.get(j);
                nr.fireOnTransition(t, t.getParent(), tt, t);
                nr.fireOnTransition(stateMachine, t.getParent(), tt, t);
            }
        }
        // ExecutePhaseActions / OnEntry
        for (Iterator i = step.getEntryList().iterator(); i.hasNext();) {
            TransitionTarget tt = (TransitionTarget) i.next();
            OnEntry oe = tt.getOnEntry();
            try {
                for (Iterator onEntryIter = oe.getActions().iterator();
                        onEntryIter.hasNext();) {
                    ((Action) onEntryIter.next()).execute(evtDispatcher,
                        errRep, scInstance, appLog, internalEvents);
                }
            } catch (SCXMLExpressionException e) {
                errRep.onError(ErrorConstants.EXPRESSION_ERROR, e.getMessage(),
                        oe);
            }
            nr.fireOnEntry(tt, tt);
            nr.fireOnEntry(stateMachine, tt);
            TriggerEvent te = new TriggerEvent(tt.getId() + ".entry",
                    TriggerEvent.CHANGE_EVENT);
            internalEvents.add(te);
            // actions in initial transition (if any) and .done events
            if (tt instanceof State) {
                State ts = (State) tt;
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Related Classes of org.apache.commons.scxml.model.TransitionTarget

  • org.apache.commons.scxml.Builtin
  • org.apache.commons.scxml.BuiltinTest
  • org.apache.commons.scxml.env.LogUtils
  • org.apache.commons.scxml.env.LogUtilsTest
  • org.apache.commons.scxml.env.SimpleErrorReporter
  • org.apache.commons.scxml.io.ModelUpdater
  • org.apache.commons.scxml.io.SCXMLDigester
  • org.apache.commons.scxml.io.SCXMLDigester$DigestSrcAttributeRule
  • org.apache.commons.scxml.io.SCXMLDigester$UpdateFinalizeRule
  • org.apache.commons.scxml.io.SCXMLDigester$UpdateModelRule
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