jOOQ - create value for field - sql

Question

I have a Field Field<T>. I want to create a named value for that field, to be able to use it in a query. The name of the value should be the name of the field.
select value as field from ...
Is the the correct way to do it?
public <T> Field<T> namedValue(Field<T> field, T value) {
return DSL.val(value, field).as(field);
}
Although it works, I was wondering if there is a shorter way to do this. I might be pedantic here :).
update
I am creating the following construction:
UPADTE table SET x = alias.x, y = alias.y
FROM (SELECT constant value for x, table2.y FROM table2 WHERE ...) AS alias.
Let's simplify this to (for the sake of this example, to focus on the constant selection):
SELECT
FROM (SELECT constant value for x) AS alias.
First, I started with:
Select s1 = context.select(DSL.val("TEST"));
Select s2 = context.select(s1.fields()).from(s1);
This resulted in an incorrect query:
select "alias_66794930"."TEST" from (select 'TEST') as "alias_66794930"
(I am not really sure if this is correct behavior from jOOQ.)
So, I added an alias:
Select s1 = context.select(DSL.val("TEST").as(X));
Select s2 = context.select(s1.fields()).from(s1);
This resulted in:
select "alias_76324565"."x" from (select 'TEST' as "x") as "alias_76324565"
This works fine. Then, I ran into problems when the constant vale was null:
Select s1 = context.select(DSL.val(null).as(X));
Select s2 = context.select(s1.fields()).from(s1);
This resulted in:
select "alias_85795854"."x" from (select cast(? as varchar) as "x") as "alias_85795854"
1400 [localhost-startStop-1] TRACE org.jooq.impl.DefaultBinding - Binding variable 1 : null (class java.lang.Object)
This makes sense, the field type is not known. So I added the field (with its type) as following:
Select s1 = context.select(DSL.val(null, X).as(X));
Select s2 = context.select(s1.fields()).from(s1);
Binding is now correct:
1678 [localhost-startStop-1] TRACE org.jooq.impl.DefaultBinding - Binding variable 1 : null (class java.lang.String)
All done!

Answer 1

I don't think you can get much shorter than what you already have. I mean, your SQL reads:
value as field
And your Java/jOOQ code reads:
DSL.val(value, field).as(field)
You could of course static import DSL.val or DSL.*:
import static org.jooq.impl.DSL.*;
And then shorten things to:
val(value, field).as(field)
And if you're very sure about value's type, you don't need to coerce it to that of field
val(value).as(field)
Now, you definitely can't go any shorter, and there's no more need for your namedValue() function...