On May 22, 2007, at 9:58 AM, [EMAIL PROTECTED] wrote:
I use Solr to search through a set of about 200,000 documents. Each
document has a numeric ID. How to do the following:
1) I use facets and want to return the facets for "all documents"
as the starting point of the user interface. In other words, I want
to /select the facet counts for about 10 facets (like states for
example) for all documents without having to do a search. Is this
possible?
Use a query of *:*, with rows=0 to get a list of all the facets
across the entire index.
2) Each document will be shown to the user with a check box next to
it. I want to user to be able to select certain documents and
"save" their ids some where else. This is not a problem. However, I
also want to give the user an ability to say "Select All
Documents". This would need to save the ids of ALL documents found
with user's given query and query filter (based on the facets that
they selected). This list could potentially contain over 10,000
documents. Question: How to easily and quickly grab the IDs of all
these documents?
Yikes! Perhaps save by query instead of as a list of id's, as long
as the user would expect that any new documents would also be in
their saved list.
If you must get the ids though, you could get a list of all of the
ids by doing a *:* query, only returning the id field.
3) Once the user saves the list, I want them to be able to do
further searches by do a "negative union" with the set of ids they
already saved. So for example, if they already saved 1000 ids into
one of their lists, they would need to be able to get results from
Solr that match their query but are NOT in the set of 1000 ids that
they already saved. Is this possible?
It's possible. You could construct a filter query with "-id:001 -id:
002 ...". I'm not sure how happy the query parser would be with
that enormous of an expression, but you could also split them up into
multiple filter queries. There may be other caveats to these
approaches that I've overlooked though.
Erik
