You're going to have to parse it yourself. Or, since Solr is open
source, you can take pieces of the existing query parsers (dismax or
lucene), and repurpose them. But I don't _think_ (I could be wrong)
there is any public API in Solr/SolrJ that will give you an AST.
On 5/31/2011 3:18 PM, dar...@ontrenet.com wrote:
Hi, thanks for the tip. I noticed the XML stuff, but the trouble is I am
taking a query string entered by a user such as "this OR that AND (this
AND that)" so I'm not sure how to go from that to a representational AST
parse tree...
I believe there is a query parser that accepts queries formatted in XML,
allowing you to provide a parse tree to Solr; perhaps that would get you
the control you're after.
-Mike
On 05/31/2011 02:24 PM, dar...@ontrenet.com wrote:
Hi,
I want to write my own query expander. It needs to obtain the AST
(abstract syntax tree) of an already parsed query string, navigate to
certain parts of it (words) and make logical phrases of those words by
adding to the AST - where necessary.
This cannot be done to the string because the query logic cannot be
semantically altered. (e.g. AND, OR, paren's etc) so it must be parsed
first.
How can this be done with SolrJ?
thanks for any tips.
Darren
