Conceptually, I think I know what to do. Unfortunately, with the given
interfaces of Lucene I have some difficulty.
If I add the content of a document sentence by sentence, i.e. line by
line, (using a multi-valued field), there are only two constructors
possible:
Field(String name, String value, Field.Store store, Field.Index index)
or
Field(String name, String value, Field.Store store, Field.Index index,
Field.TermVector termVector)
The sentence comes as a string which I get from a BufferedReader-object
by using the readLine() method.
But as far as I understood, I need to access some TokenStream-object in
order to set the PositionIncrementAttribute. So how should that work?
Thank you in advance.
Ian Lea schrieb:
You can use multi valued fields if you play with the position
increment gap. See e.g.
http://lucene.472066.n3.nabble.com/Problem-searching-in-the-same-sentence-td1501269.html
A google search for "lucene indexing sentences" or similar finds
that, and more.
Different docs can have different fields/different numbers of fields,
but the position gap approach is probably better.
--
Ian.
On Fri, Mar 4, 2011 at 7:06 AM, Michael Wiegand
<michael.wieg...@lsv.uni-saarland.de> wrote:
Hi,
I would like to create an index with Lucene to a document
collections of
text files.
The index should be created in such a way, that for the search I can
enforce
that query term A and query term B are contained within the same
sentence.
How should implement the index? Should I have for every sentence a
different
field (but make sure that it is not a multi-valued field because
they would
get merged which is exactly what I do not want)?
Would it be problematic that different documents would then end up
having
different numbes of fields?
Thank you in advance!
Best,
Michael
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