> Since you can't (and it doesn't make sense to) use
> wildcards in phrase
> queries, how do you construct a query to get results for
> phrases that begin with a certain set of terms?
> Here are some theoretical examples...
>
>
> Example 1 - I have an index where each document contains
> the contents of
> short stories. I want to return each document that
> begins with the
> words "Once upon a time". I know this in not valid
> Lucene syntax, but
> what I would like to do is query for "Once upon a time"*
You are trying to retrieve documents begins with "Once upon a time", right? You
want your phrase in the beginning of the document. You can retrieve them using
SpanQuery family programmatically.
I am not sure about the value of (int end) in SpanFirstQuery constructor but it
will be something like that:
s1 = new SpanTermQuery(new Term("story","once"));
s2 = new SpanTermQuery(new Term("story","upon"));
s3 = new SpanTermQuery(new Term("story","time"));
s4 = new SpanNearQuery([s1,s2,s3], 0, true);
s5 = new SpanFirstQuery(s4, 3);
Note that you need to use analyzed text of terms in this approach.
Hope this helps.
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