public void execute()

in src/main/java/org/apache/commons/scxml2/model/Foreach.java [95:140]
37 lines of code
14 McCabe index (conditional complexity)

    public void execute(final ActionExecutionContext exctx) throws ModelException, SCXMLExpressionException {
        final Context ctx = exctx.getContext(getParentEnterableState());
        final Evaluator eval = exctx.getEvaluator();
        final Object arrayObject = eval.eval(ctx,array);
        if ((arrayObject == null) || (!arrayObject.getClass().isArray() && !(arrayObject instanceof Iterable) && !(arrayObject instanceof Map))) {
            throw new ActionExecutionError("<foreach> in state " + getParentEnterableState().getId()+": invalid array value '"+array+"'");
        }
        if (arrayObject.getClass().isArray()) {
            for (int currentIndex = 0, size = Array.getLength(arrayObject); currentIndex < size; currentIndex++) {
                eval.evalAssign(ctx, item, Array.get(arrayObject, currentIndex));
                if (index != null) {
                    ctx.setLocal(index, currentIndex);
                }
                // The "foreach" statement is a "container"
                for (final Action aa : actions) {
                    aa.execute(exctx);
                }
            }
        }
        else {
            // In case of Javascript based arrays, the (Nashorn) engine returns a ScriptObjectMirror
            // which (also) implements Map<String, Object), so then we can/must use the map values as Iterable
            final Iterable iterable = arrayObject instanceof Iterable ? (Iterable)arrayObject : ((Map)arrayObject).values();

            // Spec requires to iterate over a shallow copy of underlying array in a way that modifications to
            // the collection during the execution of <foreach> must not affect the iteration behavior.
            // For array objects (see above) this isn't needed, but for Iterables we don't have that guarantee
            // so we make a copy first
            final ArrayList<Object> arrayList = new ArrayList<>();
            for (final Object value: iterable) {
                arrayList.add(value);
            }
            int currentIndex = 0;
            for (final Object value : arrayList) {
                eval.evalAssign(ctx, item, value);
                if (index != null) {
                    ctx.setLocal(index, currentIndex);
                }
                // The "foreach" statement is a "container"
                for (final Action aa : actions) {
                    aa.execute(exctx);
                }
                currentIndex++;
            }
        }
    }