JarCastingnomen
Intelligent Names for Java
August 23, 2013
Laird Nelson
nomen is a small project that models names for parties.
Many database applications require the storage and processing of human and organizational names. Frequently, names are effectively templates built out of other names that are more atomic in nature. For example, we like to say that a person typically has a first name, a middle name, a last name, and a full name—which is effectively a template built from the other three name types.
Of course, when we say this, we are wrong for at least some subset of people. Or we are wrong in our usage of the names themselves. For example, some people prefer to go by their last or family names. Other times people have only one name. Other times we use these strangely-designated names for sorting purposes (we tend to sort by last name, and when we capture a last name we are typically capturing it for sorting purposes).
When you examine naming deeply, you discover that designating types of names is flawed unless those name types describe at least indirectly what someone intends to do with the name so typed.
You also discover that certain names (or name parts) are fixed, or are drawn from a relatively small finite set of possible values. For example, we know that "Jr." is a sequence of three characters that stands for Junior.
nomen treats all these concepts as first-class notions. A NameValue is a glorified String with either an atomic value ("Laird"), or a template value ("${firstName} ${lastName}"). A NameType is another glorified String that identifies the usage of a given name, and that can be used as a key in templates. A Named is something that can have a name associated with it by (minimally) NameType. And finally, a Name is a union of a Named and a NameValue, together with a template evaluation engine.