/**
* Creates a transformed unit from the specified system unit.
*
* @parem symbol the symbol to use with this transformed unit.
* @param parentUnit the system unit from which this unit is derived.
* @param unitConverter the converter to the parent units.
* @throws IllegalArgumentException if the specified parent unit is not an {@link
* AbstractUnit#isSystemUnit() system unit}
*/
public TransformedUnit(String symbol, Unit<Q> parentUnit, UnitConverter unitConverter) {
if (parentUnit instanceof AbstractUnit) {
final AbstractUnit<Q> abParent = (AbstractUnit<Q>) parentUnit;
if (!abParent.isSystemUnit()) {
throw new IllegalArgumentException(
"The parent unit: " + abParent + " is not a system unit");
}
this.parentUnit = abParent;
this.converter = unitConverter;
// this.symbol = symbol; //TODO see
// https://github.com/unitsofmeasurement/uom-se/issues/54
} else {
throw new IllegalArgumentException(
"The parent unit: " + parentUnit + " is not an abstract unit.");
}
}
/**
* Creates a transformed unit from the specified system unit.
*
* @param parentUnit the system unit from which this unit is derived.
* @param unitConverter the converter to the parent units.
* @throws IllegalArgumentException if the specified parent unit is not an {@link
* AbstractUnit#isSystemUnit() system unit}
*/
public TransformedUnit(AbstractUnit<Q> parentUnit, UnitConverter unitConverter) {
if (!parentUnit.isSystemUnit())
throw new IllegalArgumentException(
"The parent unit: " + parentUnit + " is not a system unit");
this.parentUnit = parentUnit;
this.converter = unitConverter;
// this.symbol = parentUnit.getSymbol();
}
@Override
public int hashCode() {
return parentUnit.hashCode() + converter.hashCode();
}
@Override
public Map<? extends Unit<?>, Integer> getProductUnits() {
return parentUnit.getProductUnits();
}
@Override
public AbstractUnit<Q> toSystemUnit() {
return parentUnit.getSystemUnit();
}
@Override
public UnitConverter getSystemConverter() {
return parentUnit.getSystemConverter().concatenate(converter);
}
@Override
public Dimension getDimension() {
return parentUnit.getDimension();
}