@Override
public Object calculate(final List<Object> args) {
List<Object> argsNoNull = new ArrayList<>(args);
// Remove null columns if there are any
boolean removedNull = false;
while (argsNoNull.remove(null)) {
removedNull = true;
}
// If null was removed, check whether all the remaining columns
// are generated. In that case, return null.
// This needs to be here because ListNumberProvider are usually
// static, while the other columns may be from waveforms coming from
// the network. So, at connection, it's often the case
// that only variable columns are connected. This is a temporary
// problem, so we don't want the warning that at least
// one column must be fixed size.
if (removedNull) {
boolean allGenerated = true;
for (Object object : argsNoNull) {
Column column = (Column) object;
if (!column.isGenerated()) {
allGenerated = false;
}
}
if (allGenerated) {
return null;
}
}
Column[] columns = argsNoNull.toArray(new Column[argsNoNull.size()]);
return VTableFactory.newVTable(columns);
}
Object calculateImpl(final String newName) {
// If the name does not match, disconnect and connect
if (!Objects.equals(newName, previousName)) {
if (currentExpressions != null) {
for (DesiredRateExpression<?> desiredRateExpression : currentExpressions) {
if (desiredRateExpression != null) {
getDirector().disconnectReadExpression(desiredRateExpression);
}
}
}
List<DesiredRateExpression<?>> newExpressions = new ArrayList<>();
if (newName != null) {
newExpressions.addAll(Collections.nCopies(3, (DesiredRateExpression<?>) null));
}
// Connect new expressions
if (newName != null) {
DesiredRateExpression<?> newExpression = channel(newName, Object.class);
getDirector().disconnectReadExpression(newExpression);
newExpressions.set(0, newExpression);
newExpression = channel(newName + ".LLIM", Object.class);
getDirector().disconnectReadExpression(newExpression);
newExpressions.set(1, newExpression);
newExpression = channel(newName + ".ULIM", Object.class);
getDirector().disconnectReadExpression(newExpression);
newExpressions.set(2, newExpression);
}
previousName = newName;
currentExpressions = newExpressions;
}
// No return value
if (newName == null) {
return null;
}
// Extract values
VNumberArray array = (VNumberArray) currentExpressions.get(0).getFunction().readValue();
VNumber lowerRange = (VNumber) currentExpressions.get(1).getFunction().readValue();
VNumber upperRange = (VNumber) currentExpressions.get(2).getFunction().readValue();
if (array == null || lowerRange == null || upperRange == null) {
return null;
}
return ValueFactory.newVNumberArray(
array.getData(),
array.getSizes(),
Arrays.asList(
ValueFactory.newDisplay(
VTableFactory.range(
lowerRange.getValue().doubleValue(), upperRange.getValue().doubleValue())
.createListNumber(array.getSizes().getInt(0) + 1),
"")),
array,
array,
array);
}
