On Aug 30, 2006, at 11:07 AM, Jason Polites wrote:
I understand that it is possible to "re-create" fields which are
indexed but
not stored (as is done by Luke), and that this is a lossy process,
however I
am wondering whether the indexed version of this remains consistent.
That is, if I re-create a non-stored field, then re-index this
field in a
new document, will the indexed (inverted) data be the same as in the
original version?
That really all depends. For example, the original analysis process
could put in position increment gaps between sentences or overlay
terms in same positions, and don't forget about term offsets. Just
pulling out the terms without getting those details would be even
lossier. I'm not even sure how you could recreate that even if you
had all of that position and offset information without some kind of
special Analyzer that would set things exactly as they were. I
suspect there is some low-level tricks that could be played to do
this bypassing an analyzer.
Erik
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