Lucene no longer has Serializable on its classes: the cross-java-version implications are too difficult. So we expect/rely on the user layer above Lucene to handle any serialization needs.
That said, serializing an automaton should be quite simple since the data structure is just int node IDs, marked as accept nodes or not, with connecting transitions that have min/max labels. You could write that to your own byte stream and re-build the automaton on deserializing. Mike McCandless http://blog.mikemccandless.com On Thu, Mar 24, 2016 at 12:08 PM, Erick Erickson <erickerick...@gmail.com> wrote: > I'm really out of my league here, but some of the suggester stuff > builds an image on disk and some of the implementations use FSTs, > which are at least in the ballpark. > > What I'm saying here is that the code may already be in place, or at > least a place to start. > > And I have to ask, "why do you want to do this in the first place?". > What is the problem you're trying to solve anyway? > > Best, > Erick > > On Thu, Mar 24, 2016 at 6:57 AM, McKinley, James T > <james.mckin...@cengage.com> wrote: >> Here's an archive link from this mailing list regarding serializing queries, >> I guess this would work for Automaton objects as well. >> >> http://mail-archives.apache.org/mod_mbox/lucene-java-user/201603.mbox/browser >> >> Hope it helps. >> >> Jim >> ________________________________________ >> From: José Tomás Atria <jtat...@gmail.com> >> Sent: 23 March 2016 19:09 >> To: java-user@lucene.apache.org >> Subject: Persistence/Serialization of Automaton >> >> Hello! >> >> Is it possible to serialize Lucene's Automata? I see that the javadoc for >> the original BRICS package indicates that instances of Automaton implement >> Serialzable, but this is not the case with the Automaton class in Lucene 5+. >> >> I assume it is possible, considering that a FSA is basically just a set of >> states and transitions, but how would I go about (1) extracting that data >> from an instance of automaton and (2) recreating the original automaton >> given a set of transitions and states as it would be possible to obtain >> them from a live instance? >> >> Alternatively, maybe there is some other place where this is implemented? >> How can I persist lucene's automata? >> >> thanks, >> jta >> >> -- >> entia non sunt multiplicanda praeter necessitatem >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org >> For additional commands, e-mail: java-user-h...@lucene.apache.org >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
