I don't have the complete answer. But I _think_ if you do one 'bq' param
with multiple space-seperated directives, it will work.
And escaping is a pain. But can be made somewhat less of a pain if you
realize that single quotes can sometimes be used instead of
double-quotes. What I do:
_query_:"{!dismax qf='title something else'}"
So by switching between single and double quotes, you can avoid need to
escape. Sometimes you still do need to escape when a single or double
quote is actually in a value (say in a 'q'), and I do use backslash
there. If you had more levels of nesting though... I have no idea what
you'd do.
I'm not even sure why you have the internal quotes here:
bq=\"format:\\\"Book\\\"^50\"
Shouldn't that just be bq='format:Book^50', what's the extra double
quotes around <<Book>>? If you don't need them, then with switching
between single and double, this can become somewhat less crazy and error
prone:
_query_:"{!dismax bq='format:Book^50'}"
I think. Maybe. If you really do need the double quotes in there, then I
think switching between single and double you can use a single backslash
there.
On 9/20/2011 9:39 AM, Demian Katz wrote:
I'm using the LocalParams syntax combined with the _query_ pseudo-field to
build an advanced search screen (built on Solr 1.4.1's Dismax handler), but I'm
running into some syntax questions that don't seem to be addressed by the wiki
page here:
http://wiki.apache.org/solr/LocalParams
1.) How should I deal with repeating parameters? If I use multiple boost
queries, it seems that only the last one listed is used... for example:
((_query_:"{!dismax qf=\"title^500 author^300 allfields\" bq=\"format:Book^50\"
bq=\"format:Journal^150\"}test"))
boosts Journals, but not Books. If I reverse the order of the
two bq parameters, then Books get boosted instead of Journals. I can work
around this by creating one bq with the clauses OR'ed together, but I would
rather be able to apply multiple bq's like I can elsewhere.
2.) What is the proper way to escape quotes? Since there are multiple
nested layers of double quotes, things get ugly and it's easy to end up with
syntax errors. I found that this syntax doesn't cause an error:
((_query_:"{!dismax qf=\"title^500 author^300 allfields\" bq=\"format:\\\"Book\\\"^50\"
bq=\"format:\\\"Journal\\\"^150\"}test"))
...but it also doesn't work correctly - the boost queries are
completely ignored in this example. Perhaps this is more a problem related to
_query_ than to LocalParams syntax... but either way, a solution would be
great!
thanks,
Demian
