support serialization of BigDecimal values

[osi]

Avro doesn't have direct support for BigDecimal. Since jackson's schema generation considers them a double, translate values to a double prior to serialization.

Deserialization does not currently work since jackson wants to read the value as a string and use the BigDecimal(String) constructor.

[cowtowncoder]

Sounds and looks good. Happy to merge.

One question before I merge this: have I already asked for and gotten the CLA? If not, it's available from

https://github.com/FasterXML/jackson/blob/master/contributor-agreement.pdf

and we need to get it filled once, just to ensure we can distribute code that includes contributions. Or, rather, soothes corporate users who are worried about provenance of code within OSS projects (personally I would assume contributor does indeed mean to contribute code and knows ramifications but try explaining that a legal professional :) ).
The simplest way to do this is usually to d/l and print document, fill, scan and email to info at fasterxml dot com. We'll file it in a private place, and off I go merging reviewed contributions.

Apologies if you already sent one; we get quite a few of these.

[osi]

no problem. i just sent one off.

[cowtowncoder]

Awesome thanks.