The current NumericTranslator is great but it is not easy to build on it since the classes are internal.
Tapestry should provide a BigDecimal Translator which uses the infrastructure created for
TAP5-211 but parses client input directly to BigDecimal retaining the full precision of that input.
For example, I need a client input of 100.00 to be translated to a BigDecimal with value 100.00. Contributing a NumericTranslator<BigDecimal> results in a BigDecimal with value 100 because the input is parsed to a long by the NumberFormat before being type coerced.