Well, like Eric mentioned, if you can just ignore JavaCC syntax and look at embedded Java code, it's not all that complicated (especially you have done something with yacc/bison, to know how parser generators generally work)... but granted at first looks bit alien. :-)
I did a couple of basic tests using the WildcardQuery like below and it seemed to work. I have not tried an example using the PrefixQuery and I doubt that I will.
Now, I haven't tested this, but I would think that just building single Query
that searches wild card phrase "some th*" in field "my_field", you'd just do:
Query q = new WildcardQuery(new Term("my_field", "some th*"));
and feed that to whichever search object you need. In this particular case you
could also use PrefixQuery instead; if so, you need strip out the trailing
"*" (since that's implied when constructing PrefixQuery).
Because of the nature of my application I'm guaranteed to have at least one search term but the majority of the time it will be more then one. So in my particular case, I'll almost always get a BooleanQuery back from QueryParser. I'm currently working on an implementation of Eric's suggestion.
Eric described the method of combining queries that should work as far as I could see. If you do not want to rely on QueryParer to return BooleanQuery, you can also just build your your BooleanQuery, and wrap sub-queries as BooleanClauses. That's bit more work but should work as well.
Thanks to everyone for the help. It is much appreciated.
-Brian
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