: and Solr. I was hoping to start by getting a simple example working in SOLR
: and then iterate towards the more complex, given this is my first attempt at
: extending Solr.

wise choice.

: For my first iteration of SpanQuery in Solr I am thinking of starting with a
: simple syntax to combine:

...honestly: since you already mentioned that you might eventually want to 
integrate Qsol, i would suggest you start with that directly.  that way 
you are taking an eixsting parser (that you evidently understand) and just 
hooking it via the QParser abstraction (as opposed to writting a 
Lucene String->Query parser *and* learning the QParser/Solr internals.

: implementation on the Lucene side and the FooQParserPlugin as a reference
: implementation on the SOLR side?

The FooQParserPlugin is fairly primative and doesn't really make it 
obvious some of the things you can do with a QParser, so you may also want 
to skim the LuceneQParserPlugin as well

: The other part of the riddle I would really appreciate some guidance on is
: how to get it to plug-in to SOLR correctly?

http://wiki.apache.org/solr/SolrPlugins#How_to_Load_Plugins
http://wiki.apache.org/solr/SolrPlugins#QParserPlugin


-Hoss

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