Ah, awesome. I'll go read the code and see what I come up with. Thanks for the help :)
jta On Thu, Mar 24, 2016 at 1:42 PM, Michael McCandless < luc...@mikemccandless.com> wrote: > You don't need nextState/nextTransition for serializing, unless you > want to unserialize and then "resume" building an automaton. > > Those are only used while building an automaton. > > Mike McCandless > > http://blog.mikemccandless.com > > > On Thu, Mar 24, 2016 at 1:20 PM, José Tomás Atria <jtat...@gmail.com> > wrote: > > Hi Mike, > > > > Thanks for your reply. I was assuming what you mention about automata > being > > just a couple of int arrays, so I went and looked at the code for > > Automaton.copy( Automaton other ), and that is in fact what the code > copies > > from the other Automaton: > > int[] states > > int[] transitions > > > > But I got confused, because the copying code makes references to > something > > that looks like state variables in the source object: > > int nextState > > int nextTransition > > > > So I'm not sure if it's possible to, for example, reconstruct an > automaton > > merely from the states and transitions int[], or if I also need to pay > > attention to the nextState and nextTransition values, that I have no idea > > what they are, or if they are immutable, etc. I have been using factory > > methods to construct all of my automata from strings, so I don't > understand > > what this states mean, and whether they are relevant for the automaton's > > _definition_ per opposed to their construction or execution. > > > > Thanks! > > jta > > > > > > > > On Thu, Mar 24, 2016 at 12:54 PM, Michael McCandless < > > luc...@mikemccandless.com> wrote: > > > >> 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 > >> > >> > > > > > > -- > > 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 > > -- entia non sunt multiplicanda praeter necessitatem
