/**
* If the specified attribute is <i>URL</i>, then close the current file (if there is one) and
* open the new one.
*
* @param attribute The attribute that has changed.
* @exception IllegalActionException If the specified attribute is <i>URL</i> and the file cannot
* be opened.
*/
@Override
public void attributeChanged(Attribute attribute) throws IllegalActionException {
if (attribute == sourceURL) {
try {
StringToken URLToken = (StringToken) sourceURL.getToken();
if (URLToken == null) {
_source = null;
setReader(null);
} else {
_source = URLToken.stringValue();
if (_source.equals("")) {
setReader(null);
} else {
URL url = new URL(_source);
java.io.BufferedReader reader =
new BufferedReader(new InputStreamReader(url.openStream()));
setReader(reader);
}
}
} catch (IOException ex) {
throw new IllegalActionException(this, ex, "attributeChanged(" + attribute + ") failed");
}
}
super.attributeChanged(attribute);
}
/** Initialize the component and connect to the ORB. */
public void initialize() throws IllegalActionException {
try {
super.initialize();
_orb = new Orb(StringToken.convert(orbname.getToken()).stringValue(), "r");
_orb.select(StringToken.convert(srcname.getToken()).stringValue());
_orb.after(0);
} catch (Exception e) {
throw new IllegalActionException(
this, "Couldn't connect to Orb." + " (" + e.getMessage() + ")");
}
}
/**
* Invoke the Matlab engine and run a few tests.
*
* @param args Not used.
* @exception IllegalActionException If there is a problem running the tests.
*/
public static void main(String[] args) throws IllegalActionException {
Engine eng = new Engine();
eng.setDebugging((byte) 0);
long[] engineHandle = eng.open();
eng.evalString(engineHandle, "clear");
DoubleMatrixToken tx = new DoubleMatrixToken(new double[][] {{1, 2, 3}});
System.out.println("\nNote: All data output is via " + "Token.toString() on tokens");
System.out.println("that are put/get from the matlab engineHandle.");
System.out.println("\nCreate 1x3 double matrix x:");
eng.put(engineHandle, "x", tx);
System.out.println("x = " + tx.toString());
System.out.println("Eval: y = x.*x;");
eng.evalString(engineHandle, "y = x.*x;");
DoubleMatrixToken ty = (DoubleMatrixToken) eng.get(engineHandle, "y");
System.out.println("y = " + ty.toString());
System.out.println("\nCreate 2x3 double matrix x:");
tx = new DoubleMatrixToken(new double[][] {{1, 2, 3}, {4, 5, 6}});
eng.put(engineHandle, "x", tx);
System.out.println("x = " + tx.toString());
System.out.println("Eval: y = x.*x;");
eng.evalString(engineHandle, "y = x.*x;");
ty = (DoubleMatrixToken) eng.get(engineHandle, "y");
System.out.println("y = " + ty.toString());
System.out.println("\nEval: z = exp(j*pi/2*x);");
eng.evalString(engineHandle, "z = exp(j*pi/2*x);");
ComplexMatrixToken tz = (ComplexMatrixToken) eng.get(engineHandle, "z");
System.out.println("z = " + tz.toString());
System.out.println("\nEval: w = z';");
eng.evalString(engineHandle, "w = z';");
ComplexMatrixToken tw = (ComplexMatrixToken) eng.get(engineHandle, "w");
System.out.println("w = " + tw.toString());
System.out.println("\nCreate 1xn string s:");
StringToken ts = new StringToken("a string");
System.out.println("s = " + ts.toString());
eng.put(engineHandle, "s", ts);
System.out.println("\nEval: rc = [s;s];");
eng.evalString(engineHandle, "rc = [s;s];");
Token ta = eng.get(engineHandle, "rc");
System.out.println("rc = " + ta.toString());
System.out.println("\nCreate 2xn string s:");
ta = new ArrayToken(new Token[] {new StringToken("str one"), new StringToken("str two")});
System.out.println("s = " + ta.toString());
eng.put(engineHandle, "s", ta);
System.out.println("\nEval: rr = [s,s];");
eng.evalString(engineHandle, "rr = [s,s];");
ta = eng.get(engineHandle, "rr");
System.out.println("rr = " + ta.toString());
System.out.println("\nCreate 1x1 struct r (RecordToken):");
RecordToken tr =
new RecordToken(
new String[] {"x", "r", "s"},
new Token[] {
tx, new RecordToken(new String[] {"a"}, new Token[] {new IntToken()}), ts
});
System.out.println("r = " + tr.toString());
eng.put(engineHandle, "r", tr);
Token t = eng.get(engineHandle, "r");
System.out.println("\nRead back 1x1 struct r into RecordToken t:");
System.out.println("t = " + t.toString());
System.out.println("\nEval: ta = [r,r,r;r,r,r];");
eng.evalString(engineHandle, "ta = [r,r,r;r,r,r];");
t = eng.get(engineHandle, "ta");
System.out.println("\nRead 2x3 struct ta into ArrayToken " + "of ArrayToken of RecordTokens:");
System.out.println("ta = " + t.toString());
System.out.println("\nCreate 1x3 cell array from ta, " + "an ArrayToken of RecordTokens:");
RecordToken r1 =
new RecordToken(
new String[] {"a"},
new Token[] {
new ComplexMatrixToken(
new Complex[][] {{new Complex(1.0, 1.0), new Complex(2.0, 2.0)}})
});
RecordToken r2 =
new RecordToken(
new String[] {"a"},
new Token[] {
new ComplexMatrixToken(
new Complex[][] {{new Complex(3.0, 3.0), new Complex(4.0, 4.0)}})
});
RecordToken r3 =
new RecordToken(
new String[] {"a"},
new Token[] {
new ComplexMatrixToken(
new Complex[][] {{new Complex(5.0, 5.0), new Complex(6.0, 6.0)}})
});
ta = new ArrayToken(new Token[] {r1, r2, r3});
System.out.println("ta = " + ta.toString());
eng.put(engineHandle, "ta", ta);
eng.evalString(engineHandle, "tb = ta;");
ta = eng.get(engineHandle, "tb");
System.out.println("\nRead 1x3 cell array back into tb:");
System.out.println("tb = " + ta.toString());
eng.close(engineHandle);
}
