Examples of ptolemy.kernel.Entity

ptolemy.kernel.Entity
An Entity is a vertex in a generalized graph. It is an aggregation of ports. The ports can be linked to relations. The relations thus represent connections between ports, and hence, connections between entities. To add a port to an entity, simply set its container to the entity. To remove it, set its container to null, or to some other entity.
Entities are intended for flat graphs. Derived classes support hierarchy (clustered graphs) by defining entities that aggregate other entities.
An Entity can contain any instance of Port. Derived classes may wish to constrain to a subclass of Port. To do this, subclasses 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.
An Entity is created within a workspace. If the workspace is not specified as a constructor argument, then the default workspace is used. The workspace is used to synchronize simultaneous accesses to a topology from multiple threads. The workspace is immutable (it cannot be changed during the lifetime of the Entity). @author John S. Davis II, Edward A. Lee @version $Id: Entity.java,v 1.125 2007/12/06 21:57:05 cxh Exp $ @since Ptolemy II 0.2 @Pt.ProposedRating Green (eal) @Pt.AcceptedRating Green (johnr) @see ptolemy.kernel.Port @see ptolemy.kernel.Relation

            // Mirror the change in mirror ports.
            MultiCompositeActor container = (MultiCompositeActor) getContainer();
            Iterator entities = container.entityList().iterator();


            while (entities.hasNext()) {
                Entity entity = (Entity) entities.next();
                Port mirrorPort = entity.getPort(getName());


                if (mirrorPort instanceof RefinementPort) {
                    RefinementPort castPort = (RefinementPort) mirrorPort;
                    boolean disableStatus = castPort._mirrorDisable;

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            // Mirror the change in mirror ports.
            MultiCompositeActor container = (MultiCompositeActor) getContainer();
            Iterator entities = container.entityList().iterator();


            while (entities.hasNext()) {
                Entity entity = (Entity) entities.next();
                Port mirrorPort = entity.getPort(getName());


                if (mirrorPort instanceof RefinementPort) {
                    RefinementPort castPort = (RefinementPort) mirrorPort;
                    boolean disableStatus = castPort._mirrorDisable;

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            // to originally set the name.
            if (container != null) {
                Iterator entities = container.entityList().iterator();


                while (entities.hasNext()) {
                    Entity entity = (Entity) entities.next();
                    Port mirrorPort = entity.getPort(oldName);


                    if (mirrorPort instanceof RefinementPort) {
                        RefinementPort castPort = (RefinementPort) mirrorPort;
                        boolean disableStatus = castPort._mirrorDisable;

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            // Mirror the change in mirror ports.
            MultiCompositeActor container = (MultiCompositeActor) getContainer();
            Iterator entities = container.entityList().iterator();


            while (entities.hasNext()) {
                Entity entity = (Entity) entities.next();
                Port mirrorPort = entity.getPort(getName());


                if (mirrorPort instanceof RefinementPort) {
                    RefinementPort castPort = (RefinementPort) mirrorPort;
                    boolean disableStatus = castPort._mirrorDisable;


                    try {
                        castPort._mirrorDisable = true;
                        castPort.setOutput(isOutput);
                    } finally {
                        castPort._mirrorDisable = disableStatus;
                    }


                    // If the entity is a controller, then set the
                    // port to also be an input.
                    if (entity.getName().equals("_Controller")) {
                        boolean controlPortStatus = castPort._mirrorDisable;


                        try {
                            castPort._mirrorDisable = true;
                            castPort.setInput(true);

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    }


    // Initialize which columns will be visible for this target.
    private void _initColumnNames() {
        // Get the Entity for which we are configuring the ports.
        Entity target = getTarget();


        // Set up the column names that will be visible.
        String[] tempColumnNames = null;


        if (target instanceof TypedActor) {

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        /*SootMethod setTokenMethod = */parameterClass
                .getMethod("void setToken(ptolemy.data.Token)");


        // Loop over all the actor instance classes.
        for (Iterator i = _model.deepEntityList().iterator(); i.hasNext();) {
            Entity entity = (Entity) i.next();
            String className = PhaseOptions.getString(options, "targetPackage")
                    + "." + entity.getName();
            SootClass entityClass = Scene.v().loadClassAndSupport(className);


            for (Iterator fields = entityClass.getFields().iterator(); fields
                    .hasNext();) {
                SootField field = (SootField) fields.next();

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        CompositeEntity container = (CompositeEntity) getContainer();


        if (container != null) {
            for (Iterator entities = container.deepEntityList().iterator(); entities
                    .hasNext();) {
                Entity actor = (Entity) entities.next();
                Variable parameter = (Variable) actor
                        .getAttribute("firingCount");


                if (parameter != null) {
                    parameter.setExpression("0");
                }

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            } else if (port.isInput()) {
                List sinks = port.insideSinkPortList();


                if (sinks.size() > 0) {
                    IOPort connectedPort = (IOPort) sinks.get(0);
                    Entity entity = (Entity) connectedPort.getContainer();
                    String name = connectedPort.getName(model);
                    String identifier = name.replaceAll("\\.", "::");


                    String sinkExpression;
                    Variable sinkRateVariable = DFUtilities.getRateVariable(
                            connectedPort, "tokenConsumptionRate");


                    if (sinkRateVariable == null) {
                        sinkExpression = "1";
                    } else {
                        sinkExpression = identifier + "::"
                                + sinkRateVariable.getName();
                    }


                    String expression = sinkExpression + " * "
                            + entity.getName() + "::firingsPerIteration";


                    DFUtilities.setExpressionIfNotDefined(port,
                            "tokenConsumptionRate", expression);


                    if (_debugging && VERBOSE) {
                        _debug("Setting tokenConsumptionRate to " + expression);
                    }
                }
            } else if (port.isOutput()) {
                List sources = port.insideSourcePortList();


                if (sources.size() > 0) {
                    IOPort connectedPort = (IOPort) sources.get(0);
                    Entity entity = (Entity) connectedPort.getContainer();
                    String name = connectedPort.getName(model);
                    String identifier = name.replaceAll("\\.", "::");
                    Variable sourceRateVariable = DFUtilities.getRateVariable(
                            connectedPort, "tokenProductionRate");
                    String sourceExpression;


                    if (sourceRateVariable == null) {
                        sourceExpression = "1";
                    } else {
                        sourceExpression = identifier + "::"
                                + sourceRateVariable.getName();
                    }


                    String expression = sourceExpression + " * "
                            + entity.getName() + "::firingsPerIteration";


                    DFUtilities.setExpressionIfNotDefined(port,
                            "tokenProductionRate", expression);


                    if (_debugging && VERBOSE) {

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            recursiveExpression = expression + "*" + element.expression();
        }


        if (element instanceof SymbolicFiring) {
            SymbolicFiring firing = (SymbolicFiring) element;
            Entity actor = (Entity) firing.getActor();
            Variable parameter = (Variable) actor
                    .getAttribute("firingsPerIteration");


            if (parameter == null) {
                parameter = new Parameter(actor, "firingsPerIteration");
                parameter.setVisibility(Settable.NOT_EDITABLE);

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        _isOff = Boolean.TRUE;


        // Get the channel specified by the channelName parameter.
        CompositeEntity container = (CompositeEntity) getContainer();
        Entity channel = container.getEntity(channelName.stringValue());


        if (channel instanceof WirelessChannel) {
            _channel = (WirelessChannel) channel;
            ((WirelessChannel) channel).addChannelListener(this);
        } else {

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