function queries to the rescue!
q={!func}def(query($a),query($b),query($c))
a=field1:value1
b=field2:value2
c=field3:value3
"def" or default function returns the value of the first argument that
matches. It's named default because it's more commonly used like
def(popularity,50) (return the value of the popularity field, or 50
if the doc has no value for that field).
-Yonik
http://lucidworks.com
On Sun, Jul 21, 2013 at 8:48 PM, Deepak Konidena <deepakk...@gmail.com> wrote:
> I understand that lucene's AND (&&), OR (||) and NOT (!) operators are
> shorthands for REQUIRED, OPTIONAL and EXCLUDE respectively, which is why
> one can't treat them as boolean operators (adhering to boolean algebra).
>
> I have been trying to construct a simple OR expression, as follows
>
> q = +(field1:value1 OR field2:value2)
>
> with a match on either field1 or field2. But since the OR is merely an
> optional, documents where both field1:value1 and field2:value2 are matched,
> the query returns a score resulting in a match on both the clauses.
>
> How do I enforce short-circuiting in this context? In other words, how to
> implement short-circuiting as in boolean algebra where an expression A || B
> || C returns true if A is true without even looking into whether B or C
> could be true.
> -Deepak
