On 2/14/15, Petr Ferdus petr...@centrum.cz wrote:
Could be fossil FTS used to search for particular text/substring hidden
anywhere
in fossil repository?
Yes. The infrastructure is designed with that in mind, but the
implementation has not been done yet. I wanted to collect more
experience with the current search before getting into
universal-content search.
One problem to consider is that a typical full-text index requires
about 20% of the space of the original document. The Fossil
self-hosting repository currently holds 2.3GB of content. To build a
full-text index on it all would increase the repository size from 53MB
to about 500MB. About 90% of the repository would be devoted to the
full-text index. That does not seem desirable.
My plan to work around that is to only index the differences between
successive check-ins. In other words, instead of indexing the
complete text of every document, only index the changes. That will
probably reduce the size of the index to be proportional to the size
of the repository. And, it means when you do a search, you are only
going to get hits for the particular versions where those words
actually change - move into or out of the document or are in close
proximity to other words that do.
Of course, you cannot simply index *only* the changes. Each edit
needs some context. How much context to include in the index is an
open question.
--
D. Richard Hipp
d...@sqlite.org
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