public OverflowException(Number n, Class<?> expectedClass) {
super(
"Overflow exception, "
+ n.toString()
+ " cannot be converted to: "
+ expectedClass.getSimpleName());
}
private long getLong(Object value) {
if (value instanceof Long) {
// Case "value instanceof Number" below is not sufficient for Long:
// conversion via double loses precision for values > 2^48. OK for
// other types, including int and float.
return ((Long) value).longValue();
} else if (value instanceof Number) {
Number n = (Number) value;
return NumberUtil.round(n.doubleValue());
} else if (value instanceof Boolean) {
return (((Boolean) value).booleanValue() ? 1 : 0);
} else if (value instanceof String) {
try {
BigDecimal bd = new BigDecimal(value.toString().trim());
return getLong(bd);
} catch (NumberFormatException ex) {
throw newInvalidFormat(value);
}
} else {
throw newInvalidType(value);
}
}
