Do racial traits that boost domains also boost subdomains?

[davidvs]

One example: Undines have Water Affinity.

Water Affinity wrote:

Water Affinity: Undine sorcerers with the elemental (water) bloodline treat their Charisma score as 2 points higher for all sorcerer spells and class abilities. Undine clerics with the Water domain cast their Water domain powers and spells at +1 caster level.

The Water domain has five subdomains. Would an Undine cleric with the Flotsam, Flowing, Ice, Oceans, or Rivers subdomain get the boost?

Tanentially, does an Undine druid or inquisitor with the Water domain get the boost? Or does the text really mean only clerics?

[That Crazy Alchemist]

Yes, because a subdomain is defined as a more specific focus on a given root domain.