On Sep 15, 2009, at 5:31 AM, Licinio Fernández Maurelo wrote:
Hi there,
i want to recover the term vectors from indexes not calculating then
but
just only recovering instead.
http://wiki.apache.org/solr/TermVectorComponent
Some questions about this topic:
1. When i put the <termVector=true> option ... what's happening
behind?
1. Is Lucene storing the tv in the index?
Yes.
2. Is Lucene storing additional info to allow tv's calculation?
2. Reading Solr 1.4 Enterprise Search book (amazing book!) found
this: "
In Solr 1.4, it is now possible to tell Lucene that a field should
store
these for efficient retrieval. Without them, the same information
can be
derived at runtime but that's slower" (p. 286) - Does this mean
that older
Solr versions don't come with this functionality?
I haven't gotten to that section yet, but I bet it's referring to
recreating by analyzing the content.
3. Can tv component expose raw tem vectors for fields not marked
wirh
<termVector=true>?
Not yet. You can use the FieldAnalysisRequestHandler (I think that's
the name, it used to be called the DocumentAnalysisRequestHandler) to
do that, but that would require two trips to the server.
-Grant
--------------------------
Grant Ingersoll
http://www.lucidimagination.com/
Search the Lucene ecosystem (Lucene/Solr/Nutch/Mahout/Tika/Droids)
using Solr/Lucene:
http://www.lucidimagination.com/search
