What is the purpose of TextCFType over StringCFType?

[Robert Massaioli (Atlassian)]

I am extending another plugin with custom fields and I am trying to just stick a bunch of 256 character hashes into each issue. Looking in the docs I see that StringCFType seems to be the most appropriate to me but the person that previously worked on this project also has another custom field that uses TextCFType instead. I am wondering which one is more appropriate for my purpose and, in general, what problems each was meant to solve. Thankyou for your time.

[Robert Massaioli (Atlassian) · Accepted solution]

I discovered the primary difference. StringCFType is abstract and TextCFType is not. You need to use TextCFType if you actually want to put anything into your custom field.