Examples of ptolemy.kernel.CompositeEntity

ptolemy.kernel.CompositeEntity
A CompositeEntity is a cluster in a clustered graph. I.e., it is a non-atomic entity, in that it can contain other entities and relations. It supports transparent ports, where, in effect, the port of a contained entity is represented by a port of this entity. Methods that "deeply" traverse the topology see right through transparent ports. It may be opaque, in which case its ports are opaque and methods that "deeply" traverse the topology do not see through them. For instance, deepEntityList() returns the opaque entities directly or indirectly contained by this entity.
To add an entity or relation to this composite, call its setContainer() method with this composite as an argument. To remove it, call its setContainer() method with a null argument (or another container). The entity must be an instance of ComponentEntity and the relation of ComponentRelation or an exception is thrown. Derived classes may further constrain these to subclasses. To do that, they should override the protected methods _addEntity() and _addRelation() and the public member newRelation().
A CompositeEntity may be contained by another CompositeEntity. To set that up, call the setContainer() method of the inside entity. Derived classes may further constrain the container to be a subclass of CompositeEntity. To do this, they should override setContainer() to throw an exception. Recursive containment structures, where an entity directly or indirectly contains itself, are disallowed, and an exception is thrown on an attempt to set up such a structure.
A CompositeEntity can contain instances of ComponentPort. By default these ports will be transparent, although subclasses of CompositeEntity can make them opaque by overriding the isOpaque() method to return true. Derived classes may further constrain the ports to a subclass of ComponentPort. To do this, they should override the public method newPort() to create a port of the appropriate subclass, and the protected method _addPort() to throw an exception if its argument is a port that is not of the appropriate subclass.
Since contained entities implement the {@link ptolemy.kernel.util.Instantiable} interface,some may be class definitions. If an entity is a class definition, then it is not included in the lists returned by {@link #entityList()}, {@link #entityList(Class)}, {@link #deepEntityList()}, and {@link #allAtomicEntityList()}. Correspondingly, if it is not a class definition, then it is not included in the list returned by {@link #classDefinitionList()}. Contained class definitions are nonetheless required to have names distinct from contained entities that are not class definitions, and the method {@link #getEntity(String)} will return eithera class definition or an entity that is not a class definition, as long as the name matches. Note that contained entities that are class definitions cannot be connected to other entities. Moreover, they cannot be deleted as long as there are either subclasses or instances present. @author John S. Davis II, Edward A. Lee, contributor: Christopher Brooks @version $Id: CompositeEntity.java,v 1.185 2007/12/07 06:24:42 cxh Exp $ @since Ptolemy II 0.2 @Pt.ProposedRating Green (eal) @Pt.AcceptedRating Green (hyzheng)

            if (workspace().getVersion() == _listeningInputPortsVersion) {
                return _listeningInputPorts;
            }


            List result = new LinkedList();
            CompositeEntity container = (CompositeEntity) getContainer();
            Iterator entities = container.entityList().iterator();


            while (entities.hasNext()) {
                Entity entity = (Entity) entities.next();
                Iterator ports = entity.portList().iterator();

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            if (workspace().getVersion() == _listeningOutputPortsVersion) {
                return _listeningOutputPorts;
            }


            List result = new LinkedList();
            CompositeEntity container = (CompositeEntity) getContainer();
            Iterator ports = container.portList().iterator();


            while (ports.hasNext()) {
                Port port = (Port) ports.next();


                if (port instanceof WirelessIOPort) {

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            if (workspace().getVersion() == _sendingInputPortsVersion) {
                return _sendingInputPorts;
            }


            List result = new LinkedList();
            CompositeEntity container = (CompositeEntity) getContainer();
            Iterator ports = container.portList().iterator();


            while (ports.hasNext()) {
                Port port = (Port) ports.next();


                if (port instanceof WirelessIOPort) {

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            if (workspace().getVersion() == _sendingOutputPortsVersion) {
                return _sendingOutputPorts;
            }


            List result = new LinkedList();
            CompositeEntity container = (CompositeEntity) getContainer();
            Iterator entities = container.entityList().iterator();


            while (entities.hasNext()) {
                Entity entity = (Entity) entities.next();
                Iterator ports = entity.portList().iterator();

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     */
    private List _statefulComponents() {
        if (_workspace.getVersion() != _statefulComponentsVersion) {
            // Construct the list.
            _statefulComponents.clear();
            CompositeEntity container = (CompositeEntity) getContainer();
            Iterator actors = container.deepEntityList().iterator();
            while (actors.hasNext()) {
                Object actor = actors.next();
                if (actor instanceof ContinuousStatefulComponent) {
                    _statefulComponents.add(actor);
                } else if ((actor instanceof CompositeActor)

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     */
    private List _stepSizeControllers() {
        if (_workspace.getVersion() != _stepSizeControllersVersion) {
            // Construct the list.
            _stepSizeControllers.clear();
            CompositeEntity container = (CompositeEntity) getContainer();
            Iterator actors = container.deepEntityList().iterator();
            while (actors.hasNext()) {
                Object actor = actors.next();
                if (actor instanceof ContinuousStepSizeController) {
                    _stepSizeControllers.add(actor);
                } else if ((actor instanceof CompositeActor)

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                foundOne = true;


                Entity container = (Entity) (port.getContainer());
                String channelName = ((WirelessIOPort) port).outsideChannel
                        .stringValue();
                CompositeEntity container2 = (CompositeEntity) container
                        .getContainer();


                if (container2 == null) {
                    throw new IllegalActionException(this,
                            "The port's container does not have a container.");
                }


                Entity channel = container2.getEntity(channelName);


                if (channel instanceof WirelessChannel) {
                    // Cache it here, so no need to do it again in wrapup().
                    _outputWirelessChannel = (WirelessChannel) channel;
                    _wirelessOutputPort = (WirelessIOPort) port;
                    ((WirelessChannel) channel).registerPropertyTransformer(
                            this, (WirelessIOPort) port);
                } else {
                    throw new IllegalActionException(this,
                            "The connected output port does not refer to a "
                                    + "valid channel.");
                }
            }
        }


        //register this property transformer for the connected wireless
        //input port. It assumes there is only one.
        Iterator connectedInputPorts = input.sourcePortList().iterator();


        while (connectedInputPorts.hasNext()) {
            //register this property transformer for the connected wireless
            //output port. It assumes there is only one.
            IOPort port = (IOPort) connectedInputPorts.next();


            if (port.isInput() && port instanceof WirelessIOPort) {
                // Found the port.
                foundOne = true;


                Entity container = (Entity) (port.getContainer());
                String channelName = ((WirelessIOPort) port).outsideChannel
                        .stringValue();
                CompositeEntity container2 = (CompositeEntity) container
                        .getContainer();


                if (container2 == null) {
                    throw new IllegalActionException(this,
                            "The port's container does not have a container.");
                }


                Entity channel = container2.getEntity(channelName);


                if (channel instanceof WirelessChannel) {
                    // Cache it here, so no need to do it again in wrapup().
                    _inputWirelessChannel = (WirelessChannel) channel;
                    _wirelessInputPort = (WirelessIOPort) port;

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        //refers to the center of the polygon. We adjust the
        //offset here.
        _offset[0] = location.getLocation()[0] + center[0];
        _offset[1] = location.getLocation()[1] + center[1];


        CompositeEntity container = (CompositeEntity) getContainer();
        _channelName = channelName.stringValue();


        Entity channel = container.getEntity(_channelName);


        if (channel instanceof WirelessChannel) {
            _channel = (WirelessChannel) channel;
            ((WirelessChannel) channel).registerPropertyTransformer(this, null);
        } else {

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     */
    public void preinitialize() throws IllegalActionException {
        super.preinitialize();


        // Find the channel.
        CompositeEntity container = (CompositeEntity) getContainer();


        if (container != null) {
            Entity channel = container
                    .getEntity(inputChannelName.stringValue());


            if (channel instanceof AtomicWirelessChannel) {
                Parameter channelProperties = ((AtomicWirelessChannel) channel).defaultProperties;

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    public ExampleSystem() throws IllegalActionException,
            NameDuplicationException {
        super();


        // Create composite entities
        e0 = new CompositeEntity();
        e0.setName("E0");
        e3 = new CompositeEntity(e0, "E3");
        e4 = new CompositeEntity(e3, "E4");
        e7 = new CompositeEntity(e0, "E7");
        e10 = new CompositeEntity(e0, "E10");


        // Create component entities
        e1 = new ComponentEntity(e4, "E1");
        e2 = new ComponentEntity(e4, "E2");
        e5 = new ComponentEntity(e3, "E5");

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