From: rlane@club.cc.cmu.edu (Rich Lane)
Subject: [sup-talk] [PATCH 2/2] xapian index format versioning
Date: Sun, 16 Aug 2009 12:35:31 -0700 [thread overview]
Message-ID: <1250451331-16070-2-git-send-email-rlane@club.cc.cmu.edu> (raw)
In-Reply-To: <1250451331-16070-1-git-send-email-rlane@club.cc.cmu.edu>
---
lib/sup/xapian_index.rb | 13 ++++++++++++-
1 files changed, 12 insertions(+), 1 deletions(-)
diff --git a/lib/sup/xapian_index.rb b/lib/sup/xapian_index.rb
index 825e7a3..c4989e4 100644
--- a/lib/sup/xapian_index.rb
+++ b/lib/sup/xapian_index.rb
@@ -8,6 +8,7 @@ module Redwood
# for searching due to precomputing thread membership.
class XapianIndex < BaseIndex
STEM_LANGUAGE = "english"
+ INDEX_VERSION = '1'
## dates are converted to integers for xapian, and are used for document ids,
## so we must ensure they're reasonably valid. this typically only affect
@@ -22,7 +23,17 @@ class XapianIndex < BaseIndex
end
def load_index
- @xapian = Xapian::WritableDatabase.new(File.join(@dir, "xapian"), Xapian::DB_CREATE_OR_OPEN)
+ path = File.join(@dir, 'xapian')
+ if File.exists? path
+ @xapian = Xapian::WritableDatabase.new(path, Xapian::DB_OPEN)
+ db_version = @xapian.get_metadata 'version'
+ if db_version != INDEX_VERSION
+ fail "Index version #{db_version.inspect} is different than Sup version #{INDEX_VERSION.inspect}"
+ end
+ else
+ @xapian = Xapian::WritableDatabase.new(path, Xapian::DB_CREATE)
+ @xapian.set_metadata 'version', INDEX_VERSION
+ end
@term_generator = Xapian::TermGenerator.new()
@term_generator.stemmer = Xapian::Stem.new(STEM_LANGUAGE)
@enquire = Xapian::Enquire.new @xapian
--
1.6.4
next prev parent reply other threads:[~2009-08-16 19:35 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-16 19:35 [sup-talk] [PATCH 1/2] move all GDBM data into Xapian Rich Lane
2009-08-16 19:35 ` Rich Lane [this message]
2009-08-16 20:01 ` [sup-talk] [PATCH 2/2] xapian index format versioning Adeodato Simó
2009-08-16 20:28 ` Rich Lane
2009-08-17 16:08 ` Adeodato Simó
2009-08-22 14:35 ` William Morgan
2009-08-24 12:41 ` Nicolas Pouillard
2009-08-25 1:03 ` Rich Lane
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