philipc wrote:
hi,
I'm trying to add a new field to all the documents in a lucene index.
After searching around, I found the only way to do an update
is by retrieve the old documents, update it, delete it, then re-add
to index.
However, this worked for only preserving the stored fields.
i've lost all the unstored fields from the documents.
is there anyway to keep the unstored fields as well?
Or any way to go around the problem,
ie, anyway to export the entire index to a csv file
and then update the cvs, and then import it back?
Here's an idea: create an index consisting of documents with just this
field, adding documents in exactly the same order as they are in the
other index. Then use ParallelReader to access both indexes at the same
time - ParallelReader will present a merged view of both indexes. You
can also use IndexWriter.addIndexes() to create a merged index.
--
Best regards,
Andrzej Bialecki <><
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