Examples of ptolemy.actor.CompositeActor

ptolemy.actor.CompositeActor
A CompositeActor is an aggregation of actors. It may have a local director, which is an attribute of class Director that is responsible for executing the contained actors. At the top level of a hierarchy, a composite actor (the toplevel CompositeActor of the topology) will normally exist with a local Director, and no container. A composite actor at a lower level of the hierarchy may also have a local director. A composite actor with a local director is opaque, and serves the role of the wormhole from Ptolemy Classic. Its ports are opaque, but it can contain actors and relations. The toplevel composite actor is also associated with a Manager object that is responsible for managing any execution within the topology at a high level.
The executive director of a composite actor is the local director of the actor's container. The toplevel composite actor has no executive director, and getExecutiveDirector will return null. For transparent composite actors, the executive director and the local director will be the same.
The getDirector() method returns the local director if there is one. Otherwise, it returns the executive director of the CompositeActor, if there is one. Whatever it returns is called (simply) the director of the composite (it may be local or executive). This Director is responsible for the execution of all the actors contained within the composite actor.
A composite actor must have an executive director in order to communicate with the hierarchy around it. In fact, it cannot even receive data in its input ports without an executive director, since the executive director is responsible for supplying the receivers to the ports. The toplevel composite actor has no executive director and cannot have ports that transmit data, but it can still be executed as long as it has a local director. If the getDirector() method returns null, then the composite is not executable.
When a composite actor has both a director and an executive director, then the model of computation implemented by the director need not be the same as the model of computation implemented by the executive director. This is the source of the hierarchical heterogeneity in Ptolemy II. Multiple models of computation can be cleanly nested.
The ports of a CompositeActor are constrained to be IOPorts, the relations to be IORelations, and the actors to be instances of ComponentEntity that implement the Actor interface. Derived classes may impose further constraints by overriding newPort(), _addPort(), newRelation(), _addRelation(), and _addEntity(). @author Mudit Goel, Edward A. Lee, Lukito Muliadi, Steve Neuendorffer, Contributor: Daniel Crawl @version $Id: CompositeActor.java,v 1.225 2008/01/26 02:51:31 cxh Exp $ @since Ptolemy II 0.2 @Pt.ProposedRating Green (cxh) @Pt.AcceptedRating Yellow (neuendor) @see ptolemy.actor.IOPort @see ptolemy.actor.IORelation @see ptolemy.kernel.ComponentEntity @see ptolemy.actor.Director @see ptolemy.actor.Manager

            removeGraphicalClasses.put(
                    "ptolemy.copernicus.gui.GeneratorTableauAttribute", null);
            MoMLParser.addMoMLFilter(removeGraphicalClasses);


            // Parse the model.
            CompositeActor toplevel = null;
            toplevel = (CompositeActor) parser
                    .parse(modelPathURL, modelPathURL);


            FileWriter writer = null;


            try {
                writer = new FileWriter(newModelFile);
                toplevel.exportMoML(writer);
            } finally {
                if (writer != null) {
                    writer.close();
                }
            }

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    private FSMDirector _getDirector() {
        // Get the containing FSMActor.
        NamedObj container = getContainer();
        if (container != null) {
            // Get the containing modal model.
            CompositeActor modalModel = (CompositeActor) container
                    .getContainer();
            if (modalModel != null) {
                // Get the director for the modal model.
                Director director = modalModel.getDirector();
                if (director instanceof FSMDirector) {
                    return (FSMDirector) director;
                }
            }
        }

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                _expectingClass = false;


                MoMLParser parser = new MoMLParser();
                String string = "<entity name=\"toplevel\" class=\"" + arg
                        + "\"/>";
                CompositeActor model = (CompositeActor) parser.parse(string);


                // Temporary hack because cloning doesn't properly clone
                // type constraints.
                CompositeActor modelClass = (CompositeActor) parser
                        .searchForClass(arg, model.getSource());


                if (modelClass != null) {
                    model = modelClass;
                }

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            boolean match = false;
            Iterator models = _models.iterator();


            while (models.hasNext()) {
                CompositeActor model = (CompositeActor) models.next();
                Attribute attribute = model.getAttribute(name);


                if (attribute instanceof Variable) {
                    match = true;
                    ((Variable) attribute).setExpression(value);


                    // Force evaluation so that listeners are notified.
                    ((Variable) attribute).getToken();
                }


                Director director = model.getDirector();


                if (director != null) {
                    attribute = director.getAttribute(name);


                    if (attribute instanceof Variable) {

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     *  @exception IllegalActionException If refiring can not be granted.
     */
    public boolean postfire() throws IllegalActionException {
        if (!_isTopLevel() && (getBreakPoints().size() > 0)) {
            Time time = (Time) getBreakPoints().first();
            CompositeActor container = (CompositeActor) getContainer();
            container.getExecutiveDirector().fireAt(container, time);
        }


        boolean postfireReturns = _postfireReturns && !_stopRequested;


        if (_debugging && _verbose) {

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        if (!(nameable instanceof CompositeActor)) {
            throw new IllegalActionException(this,
                    "has no CompositeActor container.");
        }


        CompositeActor container = (CompositeActor) nameable;


        if (container.getContainer() != null) {
            if (!canBeInsideDirector()) {
                throw new IllegalActionException(this,
                        "cannot serve as an inside director.");
            }
        } else {

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            Parameter modelName = (StringParameter) getAttribute("modelName");
            modelName.setExpression(modelNameValue);


            // Set the iterations parameter.
            CompositeActor compositeActor;


            try {
                compositeActor = (CompositeActor) toplevel;
            } catch (ClassCastException ex) {
                throw new InternalErrorException(this, ex,
                        "Failed to cast toplevel '" + toplevel
                                + "' to a CompositeActor");
            }


            Director director = compositeActor.getDirector();


            // If we save a blank model, then there might not be a director.
            Parameter iterations = (StringParameter) getAttribute("iterations");


            if (director == null) {

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     *
     *  @return The executive CT general director of this director, if there
     *  is any.
     */
    public CTGeneralDirector getExecutiveCTGeneralDirector() {
        CompositeActor container = (CompositeActor) getContainer();
        Director executiveDirector = container.getExecutiveDirector();


        if (executiveDirector instanceof CTGeneralDirector) {
            return (CTGeneralDirector) executiveDirector;
        } else {
            return null;

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    /** Return the current time obtained from the executive director, if
     *  there is one, and otherwise return the local view of current time.
     *  @return The current time.
     */
    public Time getModelTime() {
        CompositeActor cont = (CompositeActor) getContainer();
        Director execDir = cont.getExecutiveDirector();


        if (execDir != null) {
            return execDir.getModelTime();
        } else {
            return super.getModelTime();

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    /** Return a string describing the status of each receiver.
     *  @return A string describing the status of each receiver.
     */
    private String _receiverStatus() {
        StringBuffer result = new StringBuffer();
        CompositeActor container = (CompositeActor) getContainer();


        // Start with the input ports of the composite, which
        // may have forked connections on the inside.
        Iterator inputPorts = container.inputPortList().iterator();
        while (inputPorts.hasNext()) {
            IOPort inputPort = (IOPort) (inputPorts.next());
            result.append("Send inside from " + inputPort.getFullName() + "\n");
            Receiver[][] destinations = inputPort.deepGetReceivers();
            for (int channel = 0; channel < destinations.length; channel++) {
                if (destinations[channel] != null) {
                    result.append("   on channel " + channel + ":\n");
                    for (int copy = 0; copy < destinations[channel].length; copy++) {
                        result.append("-- to "
                                + _receiverStatus(destinations[channel][copy])
                                + "\n");
                    }
                }
            }
        }


        // Next do the output ports of all contained actors.
        Iterator actors = container.deepEntityList().iterator();
        while (actors.hasNext()) {
            Actor actor = (Actor) actors.next();
            Iterator outputPorts = actor.outputPortList().iterator();
            while (outputPorts.hasNext()) {
                IOPort outputPort = (IOPort) (outputPorts.next());

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