RelaxQueryComponent - A new SearchComponent that relaxes the main in a
semiautomatic way
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Key: SOLR-1878
URL: https://issues.apache.org/jira/browse/SOLR-1878
Project: Solr
Issue Type: New Feature
Components: SearchComponents - other
Affects Versions: 1.4
Reporter: Koji Sekiguchi
Priority: Minor
I have the following use case:
Imagine that you visit a web page for searching an apartment for rent. You
choose parameters, usually mark check boxes and this makes AND queries:
{code}
rent:[* TO 1500] AND bedroom:[2 TO *] AND floor:[100 TO *]
{code}
If the conditions are too tight, Solr may return few or zero leasehold
properties. Because the things is not good for the site visitors and also
owners, the owner may want to recommend the visitors to relax the conditions
something like:
{code}
rent:[* TO 1700] AND bedroom:[2 TO *] AND floor:[100 TO *]
{code}
or:
{code}
rent:[* TO 1500] AND bedroom:[2 TO *] AND floor:[90 TO *]
{code}
And if the relaxed query get more numFound than original, the web page can
provide a link with a comment "if you can pay additional $100, ${numFound}
properties will be found!".
Today, I need to implement client for this scenario, but this way makes two
round trips for showing one page and consistency problem (and laborious of
course!).
I'm thinking a new SearchComponent that can be used with QueryComponent. It
does search when numFound of the main query is less than a threshold. Clients
can specify via request parameters how the query can be relaxed.
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