: >>[Query]
: >>"Napol* Dynamite" near "film|movie"
: >This can be done using nested SpanNearQuery's and SpanOrQuery's.
: >A PhrasePrefixQuery can not be used as a SpanQuery.
I've never really looked at SpanQueries very hard, but this thread got me
a bit curious.
Looking over the docs and the code, it seems that *IF* there were a
"SpanPrefixQuery" then the query could be expressed as...
new SpanNearQuery(new SPanQuery[] {
new SpanNearQuery((new SpanQuery[] {
new SpanPrefixQuery(new Term(f, "Napol")),
new SpanTermQuery(new Term(f,"Dynamite"))
},
0, true
),
new SpanOrQuery(new SPanQuery[] {
new SpanTermQuery(new Term(f,"film")),
new SpanTermQUery(new Term(f,"movie))
}
)
},
MAX_INT, false
)
The question then becomes, can a SpanPrefixQuery exist?
looking at the code for SpanTermQuery, it seems like it should be possible
to write a subclass which redefines the getSPans() method to return a Span
which not only maintains a TermPosition, but also a TermEnum which
iterates over all terms which match the prefix -- the TermPositions
iterator loop would be reset as many times as the TermEnum found
usable terms.
Am I missing something about the way Spans work? ... Is what I'm
suggesting possile/practicle, or is there a reason it doesn't allready
exist?
-Hoss
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