public void fire() throws IllegalActionException {
super.fire();
log.debug("\n\n\n--- fire");
try {
String ce = opendapCEParameter.getExpression();
log.debug("Constraint Expression: " + ce);
ce = createCEfromWiredPorts(ce);
log.debug("Using CE: " + ce);
DDS dds = dapConnection.getData(ce);
// log.debug("fire(): dapConnection.getData(ce) returned DataDDS:");
// dds.print(System.out);
log.debug("Squeezing arrays.");
squeezeArrays(dds);
log.debug("Broadcasting DAP data arrays.");
broadcastDapData(dds);
// log.debug("fire(): After data broadcast:");
// dds.print(System.out);
} catch (Exception e) {
log.error("fire() Failed: ", e);
}
}
/**
* Create the figure for this actor based on the user specified image file.
*
* @return The ImageFigure containing the image.
* @exception IllegalActionException If the selected file does not exist.
*/
protected ImageFigure _createFigure() throws IllegalActionException {
URL url = fileOrURL.asURL();
Image image = Toolkit.getDefaultToolkit().createImage(url);
ImageFigure figure = new ImageFigure(image);
return figure;
}
/**
* Override the base class to open the model specified if the attribute is modelFileOrURL, or for
* other parameters, to cache their values.
*
* @param attribute The attribute that changed.
* @exception IllegalActionException If the change is not acceptable to this container (not thrown
* in this base class).
*/
public void attributeChanged(Attribute attribute) throws IllegalActionException {
if (attribute == modelFileOrURL) {
// Open the file and read the MoML to create a model.
URL url = modelFileOrURL.asURL();
if (url != null) {
// By specifying no workspace argument to the parser, we
// are asking it to create a new workspace for the referenced
// model. This is necessary because the execution of that
// model will proceed through its own sequences, and it
// will need to get write permission on the workspace.
// Particularly if it is executing in a new thread, then
// during the fire() method of this actor it would be
// inappropriate to grant write access on the workspace
// of this actor.
MoMLParser parser = new MoMLParser();
try {
_model = parser.parse(null, url);
} catch (Exception ex) {
throw new IllegalActionException(this, ex, "Failed to read model.");
}
// Create a manager, if appropriate.
if (_model instanceof CompositeActor) {
_manager = new Manager(_model.workspace(), "Manager");
((CompositeActor) _model).setManager(_manager);
if (_debugging) {
_debug("** Created new manager.");
}
}
} else {
// URL is null... delete the current model.
_model = null;
_manager = null;
_throwable = null;
}
} else if (attribute == maxOutputLength) {
IntToken length = (IntToken) maxOutputLength.getToken();
if (length.intValue() > 0) {
_outputLength = length.intValue();
} else {
throw new IllegalActionException(this, "output array length is less than or equal 0?!");
}
} else {
super.attributeChanged(attribute);
}
}
/**
* @param attribute The changed Attribute.
* @throws ptolemy.kernel.util.IllegalActionException When bad things happen.
*/
public void attributeChanged(ptolemy.kernel.util.Attribute attribute)
throws ptolemy.kernel.util.IllegalActionException {
log.debug("attributeChanged() start.");
if (attribute == opendapURLParameter || attribute == opendapCEParameter) {
String url = opendapURLParameter.getExpression();
String ce = opendapCEParameter.getExpression();
if (attribute == opendapURLParameter)
log.debug("--- attributeChanged() url: " + url + " Current URL: " + opendapURL);
if (attribute == opendapCEParameter)
log.debug("--- attributeChanged() ce: \"" + ce + "\" Current CE: \"" + opendapCE + "\"");
boolean reload = false;
if (!opendapURL.equals(url)) {
opendapURL = url;
// only reload if not empty.
if (!url.equals("")) {
reload = true;
}
}
if (!opendapCE.equals(ce)) {
opendapCE = ce;
// *** I think this should test if url.equals(""). jhrg
reload = true;
}
if (reload) {
try {
log.debug("OPeNDAP URL: " + opendapURL);
dapConnection = new DConnect2(opendapURL);
DDS dds = dapConnection.getDDS(opendapCE);
log.debug("Got DDS.");
// dds.print(System.out);
log.debug("Squeezing arrays.");
squeezeArrays(dds);
// log.debug("Before ports configured.");
// dds.print(System.out);
log.debug("Configuring ports.");
configureOutputPorts(dds);
// log.debug("After ports configured.");
// dds.print(System.out);
} catch (Exception e) {
e.printStackTrace();
throw new IllegalActionException(
"Problem accessing " + "OPeNDAP Data Source: " + e.getMessage());
}
}
}
// *** Remove the ODC option. jhrg
else if (attribute == runODC) {
BooleanToken token = (BooleanToken) runODC.getToken();
if (token.booleanValue()) {
// start ODC in separate thread
ODCThread tr = new ODCThread();
tr.start();
runODC.setExpression("false");
}
}
}
