Wow, I really did misunderstand. My apologies.
Yes, you will need to fork QueryParser.jj and install JavaCC to build your custom parser. It should be pretty trivial to add alternatives to AND(+)/OR/NOT(-).
Erik
On Dec 21, 2004, at 4:42 AM, Sanyi wrote:
Hi!
I think we're talking about different things.
My question is about using synonyms for AND/OR/NOT operators, not about synonyms of words in the
index.
For example, in some language: AND = AANNDD; OR = OORR; NOT = NNOOTT
So, the user can enter: (cat OR kitty) AND black AND tail
and either:
(cat OORR kitty) AANNDD black AANNDD tail
Both sets of operators must work.
It must be some kind of a query parser modification/parametering, so there is nothing to do with
the index.
I hope I was more specific now ;)
Thanx, Sanyi
--- Erik Hatcher <[EMAIL PROTECTED]> wrote:
On Dec 21, 2004, at 3:04 AM, Sanyi wrote:What is the simplest way to add synonyms for AND/OR/NOT operators? I'd like to support two sets of operator words, so people can use either the original english operators and my custom ones for our local language.
There are two options that I know of: 1) add synonyms during indexing and 2) add synonyms during querying. Generally this would be done using a custom analyzer.
If the synonym mappings are static and you don't mind a larger index, adding them during indexing avoids the complexity of rewriting the query. Injecting synonyms during querying allows the synonym mappings to change dynamically, though does produce more complex queries. Here's an example you'll find with the source code distribution of Lucene in Action which uses WordNet to look up synonyms.
Erik
p.s. I'm sensitive to over-marketing Lucene in Action in this forum as
it would bother me to constantly see an advertisement. You can be sure
that any mentions of it from me will coincide with concrete examples
(which are freely available) that are directly related to questions
being asked.
% ant -emacs SynonymAnalyzerViewer Buildfile: build.xml
check-environment:
compile:
build-test-index:
build-perf-index:
prepare:
SynonymAnalyzerViewer:
Using a custom SynonymAnalyzer, two fixed strings are analyzed with the results displayed. Synonyms, from the WordNet database, are injected into the same positions as the original words.
See the "Analysis" chapter for more on synonym injection and position increments. The "Tools and extensions" chapter covers the WordNet feature found in the Lucene sandbox.
Press return to continue...
Running lia.analysis.synonym.SynonymAnalyzerViewer...
1: [quick] [warm] [straightaway] [spry] [speedy] [ready] [quickly] [promptly] [prompt] [nimble] [immediate] [flying] [fast] [agile] 2: [brown] [brownness] [brownish] 3: [fox] [trick] [throw] [slyboots] [fuddle] [fob] [dodger] [discombobulate] [confuse] [confound] [befuddle] [bedevil] 4: [jumps] 5: [over] [o] [across] 6: [lazy] [faineant] [indolent] [otiose] [slothful] 7: [dogs]
1: [oh]
2: [we]
3: [get] [acquire] [aim] [amaze] [arrest] [arrive] [baffle] [beat]
[become] [beget] [begin] [bewilder] [bring] [can] [capture] [catch]
[cause] [come] [commence] [contract] [convey] [develop] [draw] [drive]
[dumbfound] [engender] [experience] [father] [fetch] [find] [fix]
[flummox] [generate] [go] [gravel] [grow] [have] [incur] [induce] [let]
[make] [may] [mother] [mystify] [nonplus] [obtain] [perplex] [produce]
[puzzle] [receive] [scram] [sire] [start] [stimulate] [stupefy]
[stupify] [suffer] [sustain] [take] [trounce] [undergo]
4: [both]
5: [kinds]
6: [country] [state] [nationality] [nation] [land] [commonwealth] [area]
7: [western] [westerly]
8: [bb]
BUILD SUCCESSFUL Total time: 10 seconds
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