// Try to convert the specified value.
private static Number convert(Number value, UnitConverter cvtr, MathContext ctx) {
if (cvtr instanceof RationalConverter) { // Try converting through Field
// methods.
RationalConverter rCvtr = (RationalConverter) cvtr;
BigInteger dividend = rCvtr.getDividend();
BigInteger divisor = rCvtr.getDivisor();
if (dividend.abs().compareTo(BigInteger.valueOf(Long.MAX_VALUE)) > 0)
throw new ArithmeticException("Multiplier overflow");
if (divisor.compareTo(BigInteger.valueOf(Long.MAX_VALUE)) > 0)
throw new ArithmeticException("Divisor overflow");
return (value.longValue() * dividend.longValue()) / (divisor.longValue());
} else if (cvtr instanceof AbstractConverter.Compound
&& cvtr.isLinear()) { // Do it in two parts.
AbstractConverter.Compound compound = (AbstractConverter.Compound) cvtr;
Number firstConversion = convert(value, compound.getRight(), ctx);
Number secondConversion = convert(firstConversion, compound.getLeft(), ctx);
return secondConversion;
} else { // Try using BigDecimal as intermediate.
BigDecimal decimalValue = BigDecimal.valueOf(value.doubleValue());
Number newValue = cvtr.convert(decimalValue.toBigDecimal(), ctx);
return newValue;
// if (((FieldNumber)value) instanceof Decimal)
// return (N)((FieldNumber)Decimal.valueOf(newValue));
// if (((FieldNumber)value) instanceof Float64)
// return (N)((FieldNumber)Float64.valueOf(newValue.doubleValue()));
// throw new ArithmeticException(
// "Generic amount conversion not implemented for amount of type " +
// value.getClass());
}
}
public double doubleValue(Unit<IMoney> unit) {
Unit<IMoney> myUnit = unit();
try {
UnitConverter converter = unit.getConverterToAny(myUnit);
return converter.convert(getNumber().doubleValue());
} catch (UnconvertibleException e) {
throw e;
} catch (IncommensurableException e) {
throw new IllegalArgumentException(e.getMessage());
}
}
public long longValue(Unit<IMoney> unit) throws ArithmeticException {
Unit<IMoney> myUnit = unit();
try {
UnitConverter converter = unit.getConverterToAny(myUnit);
return (converter.convert(BigDecimal.valueOf(super.getNumber().longValue())).longValue());
} catch (UnconvertibleException e) {
throw e;
} catch (IncommensurableException e) {
throw new IllegalArgumentException(e.getMessage());
}
}
/**
* Returns the unit derived from this unit using the specified converter. The converter does not
* need to be linear. For example:[code] Unit<Dimensionless> DECIBEL = Unit.ONE.transform( new
* LogConverter(10).inverse().concatenate( new RationalConverter(1, 10))); [/code]
*
* @param operation the converter from the transformed unit to this unit.
* @return the unit after the specified transformation.
*/
@SuppressWarnings("unchecked")
public final Unit<IMoney> transform(UnitConverter operation) {
if (this instanceof Unit<?>) {
Unit<IMoney> tf = this;
Unit<?> parent = (Unit<?>) ((TransformedUnit<?>) tf).getParentUnit();
UnitConverter toParent = ((TransformedUnit<?>) tf).toParentUnit();
if (toParent == null) return (Unit<IMoney>) parent;
UnitConverter toParentConcat = toParent.concatenate(operation);
if (toParentConcat == AbstractConverter.IDENTITY) return (Unit<IMoney>) parent;
return new TransformedUnit<IMoney>((Unit<IMoney>) parent, (AbstractConverter) toParentConcat);
}
if (operation == AbstractConverter.IDENTITY) return this;
return new TransformedUnit<IMoney>(this, (AbstractConverter) operation);
}
