Examples of ptolemy.data.ArrayToken

ptolemy.data.ArrayToken
A token that contains an array of tokens. The operations between arrays are defined pointwise, and require that the lengths of the arrays are the same. The elements of the ArrayToken will be converted to the least upper bound of their input types. Zero length array tokens are supported, given a prototype element to determine the type of the array. @author Yuhong Xiong, Steve Neuendorffer, Contributor: Christopher Brooks @version $Id: ArrayToken.java,v 1.119 2007/12/07 06:31:43 cxh Exp $ @since Ptolemy II 0.4 @Pt.ProposedRating Yellow (cxh) @Pt.AcceptedRating Red (cxh) nil token code

        public void createEditor(NamedObj object, Frame parent) {
            // Perform the highlighting.
            try {
                NamedObj container = HighlightEntities.this.getContainer();
                if (container instanceof CompositeEntity) {
                    ArrayToken names = (ArrayToken) entityNames.getToken();
                    if (names != null && names.length() > 0) {
                        StringBuffer moml = new StringBuffer("<group>");
                        for (int i = 0; i < names.length(); i++) {
                            String name = ((StringToken) names.getElement(i))
                                    .stringValue();
                            ComponentEntity entity = ((CompositeEntity) container)
                                    .getEntity(name);
                            if (entity != null) {
                                moml.append("<entity name=\"");

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                    locationArray[i] = new DoubleToken(location[i]);
                }


                double timeValue = getDirector().getModelTime()
                        .getDoubleValue();
                Token[] values = { new ArrayToken(locationArray),
                        new DoubleToken(timeValue), new IntToken(0) };
                Token result = new RecordToken(labels, values);


                output.send(0, result);
            } else {
                // It is the pursuer. Send its parent info to the pursuer.
                if (_timeValue > 0.0) {
                    String[] labels = { "location", "time", "depth" };


                    Token[] values = { new ArrayToken(_parentLocation),
                            new DoubleToken(_timeValue),
                            new IntToken(_parentDepth) };
                    Token result = new RecordToken(labels, values);


                    output.send(0, result);

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                                + ". Must be nonnegative.");
            }


            _reinitializeNeeded = true;
        } else if (attribute == taps) {
            ArrayToken tapsToken = (ArrayToken) (taps.getToken());
            _taps = tapsToken.arrayValue();


            // Get a token representing zero in the appropriate type.
            _zero = _taps[0].zero();


            _reinitializeNeeded = true;

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     *  @exception IllegalActionException If a runtime type conflict occurs.
     */
    public void fire() throws IllegalActionException {
        super.fire();


        ArrayToken token = (ArrayToken) input.get(0);
        int rate = ((IntToken) arrayLength.getToken()).intValue();
        boolean enforce = ((BooleanToken) enforceArrayLength.getToken())
                .booleanValue();


        if (enforce && (token.length() != rate)) {
            throw new IllegalActionException(this, "The "
                    + "number of elements in the input ArrayToken ("
                    + token.length() + ") is not the same as the arrayLength "
                    + "parameter (" + rate + ").");
        }


        Token[] elements = token.arrayValue();
        output.send(0, elements, elements.length);
    }

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            } else {
                _outputs[i] = _outputs[(2 * (_numberOfLags - notSymmetric)) - i];
            }
        }


        output.broadcast(new ArrayToken(_outputs));
    }

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     *   nondecreasing and nonnegative, or it is not a row vector.
     */
    public void attributeChanged(Attribute attribute)
            throws IllegalActionException {
        if (attribute == offsets) {
            ArrayToken offsetsValue = (ArrayToken) offsets.getToken();
            _offsets = new double[offsetsValue.length()];


            double previous = 0.0;


            for (int i = 0; i < offsetsValue.length(); i++) {
                _offsets[i] = ((DoubleToken) offsetsValue.getElement(i))
                        .doubleValue();


                // Check nondecreasing property.
                if (_offsets[i] < previous) {
                    throw new IllegalActionException(this,

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        super(container, name);


        StringToken[] empty = new StringToken[1];
        stateVariableNames = new Parameter(this, "stateVariableNames");
        empty[0] = new StringToken("");
        stateVariableNames.setToken(new ArrayToken(BaseType.STRING, empty));
        initialStates = new Parameter(this, "initialStates");
        initialStates.setTypeEquals(BaseType.DOUBLE_MATRIX);


        setClassName("ptolemy.domains.ct.lib.DifferentialSystem");

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     */
    public void preinitialize() throws IllegalActionException {
        // Check parameters.
        _checkParameters();


        ArrayToken stateNames = (ArrayToken) stateVariableNames.getToken();
        int n = stateNames.length();
        int m = inputPortList().size();
        int r = outputPortList().size();


        // FIXME: Why does this get the token and then do nothing with the value?
        //DoubleMatrixToken initial = (DoubleMatrixToken) initialStates
        //        .getToken();


        try {
            _workspace.getWriteAccess();
            removeAllEntities();
            removeAllRelations();


            // Create the model
            Integrator[] integrators = new Integrator[n];
            String[] states = new String[n];
            IORelation[] stateRelations = new IORelation[n];
            Expression[] equations = new Expression[n];


            // Integrators and feedback expressions
            for (int i = 0; i < n; i++) {
                states[i] = ((StringToken) stateNames.getElement(i))
                        .stringValue().trim();
                integrators[i] = new Integrator(this, states[i]);
                integrators[i].initialState.setExpression("initialStates(0,"
                        + i + ")");
                stateRelations[i] = new TypedIORelation(this, "relation_"

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    /** Check the dimensions of all parameters and ports.
     *  @exception IllegalActionException If the dimensions are illegal.
     */
    private void _checkParameters() throws IllegalActionException {
        // Check state variable names.
        ArrayToken stateNames = (ArrayToken) stateVariableNames.getToken();
        int n = stateNames.length();


        if (n < 1) {
            throw new IllegalActionException(this, "There must be at "
                    + "least one state variable for a differential system.");
        }


        // Check if any of the state variable names is an empty string.
        for (int i = 0; i < n; i++) {
            String name = (((StringToken) stateNames.getElement(i))
                    .stringValue()).trim();


            if (name.equals("")) {
                throw new IllegalActionException(this, "A state variable "
                        + "name should not be an empty string.");

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     *   to this container (not thrown in this base class).
     */
    public void attributeChanged(Attribute attribute)
            throws IllegalActionException {
        if (attribute == initialPool) {
            ArrayToken pool = (ArrayToken) initialPool.getToken();
            // Reset the pool.
            _pool.clear();
            // Copy the tokens into the pool.
            for (int i = 0; i < pool.length(); i++) {
                _pool.add(pool.getElement(i));
            }
        } else {
            super.attributeChanged(attribute);
        }
    }

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