That class is in Neo4j kernel. It is the actual implementation class. You can find the source code here: https://github.com/neo4j/graphdb/blob/master/kernel/src/main/java/org/neo4j/kernel/impl/nioneo/store/ShortString.java
All of the classes in the org.neo4j.kernel.impl.nioneo.store package of my neo4j-admin-store project are of that kind, facade classes that provide access to internals of the neo4j kernel implementation. Cheers, Tobias On Mon, Mar 7, 2011 at 1:00 PM, Balazs E. Pataki <[email protected]>wrote: > Hi Tobias, > > I tried to use ShortStringEncoding.java, however it seems to refer to a > class called ShortString, which is not available in github: > > > https://github.com/thobe/neo4j-admin-store/tree/master/src/main/java/org/neo4j/kernel/impl/nioneo/store > > Could you also please provide it? > > Thanks, > --- > balazs > > On 3/4/11 5:05 PM, Tobias Ivarsson wrote: > > Hi Balazs, > > > > I have created such a thing, the tool is available here: > > > https://github.com/downloads/thobe/neo4j-admin-store/propstat-1.3.M03.jar > > Run it as: java -jar propstat-1.3.M03.jar<path to your neo4j store> > > > > This tool will gather statistics about all of your properties, and output > > how many you have of each kind. > > For short string properties it will output how many you have in each > > encoding. > > For regular string properties it will output how many could have been > stored > > as short strings, and with which encoding that would be. > > > > That jar file contains a class that can be used for testing if a given > > string is "short" or not, and how it would be stored if it was considered > > short: > > > https://github.com/thobe/neo4j-admin-store/blob/master/src/main/java/org/neo4j/kernel/impl/nioneo/store/ShortStringEncoding.java > > The method you are interested in is (the first one) getEncoding(String), > it > > returns one of the Enum constants in that class, or null if the provided > > string would not be considered "short". > > > > While I wrote this I realized that it would be really simple to write a > tool > > that converts all strings that are short enough to be stored as short > > strings, that tool is available here: > > > https://github.com/downloads/thobe/neo4j-admin-store/makeshort-1.3.M03.jar > > Run it as: java -jar makeshort-1.3.M03.jar<path to your neo4j store> > > > > This tool will modify your string properties to store them as short > strings > > when possible. It will then rebuild the id generator for the > > DynamicStringStore so that the "holes" created where the strings were > > previously stored will be reused the next time you write string > properties > > to Neo4j (unless they are also short of course). > > > > Please note that both of these tools come with no official support or > > guarantees. Use at your own risk. > > > > Cheers, > > Tobias > > > > On Fri, Mar 4, 2011 at 10:19 AM, Balazs E. Pataki<[email protected] > >wrote: > > > >> Actually both options would be very useful, but the first option (string > >> as input and tell me if it is short or not) would be enough for me for > >> now if available. > >> > >> Thanks, > >> --- > >> balazs > >> > >> On 3/3/11 6:37 PM, Tobias Ivarsson wrote: > >>> Yes, the statistics tool almost does that, but with a wider range of > >>> possible encodings. > >>> > >>> What would you want from a class like that? Give it a string as input > and > >>> have it tell you if it is short or not? Or go through an existing store > >> and > >>> tell you how many of the strings are short? > >>> > >>> -tobias > >>> > >>> On Thu, Mar 3, 2011 at 5:18 PM, Balazs E. Pataki<[email protected] > >>> wrote: > >>> > >>>> Hi Tobias, > >>>> > >>>> Do you happen to have some little class which can at tell us which > >>>> property values neo4j would consider short and which of your 6 > encoding > >>>> would it use? Maybe the string statistics collecting program you > created > >>>> earlier has this logic - but I'm just guessing. > >>>> > >>>> Thanks, > >>>> --- > >>>> balazs > >>>> > >>>> On 3/3/11 11:52 AM, Tobias Ivarsson wrote: > >>>>> No there is no simpler way, yet. We've been thinking about creating a > >>>> "short > >>>>> string compression tool" for accomplishing this, but haven't done so > >> yet. > >>>>> > >>>>> Cheers, > >>>>> Tobias > >>>>> > >>>>> On Thu, Mar 3, 2011 at 11:35 AM, Balazs E. Pataki< > [email protected] > >>>>> wrote: > >>>>> > >>>>>> Hi, > >>>>>> > >>>>>> I have a big database based on Neo4J 1.2. Now, if I would like to > use > >>>>>> the "short strings" feature of Neo4j 1.3 M03 I should regenerate my > >> full > >>>>>> database, that is all strings should be reset so that it may or may > >> not > >>>>>> be stored according to the new "short strings" policy. > >>>>>> > >>>>>> It seems to me that the easiest way to do this would be to somehow > be > >>>>>> able to copy the full 1.2 database to a newly created 1.3 M03 > database > >>>>>> by traversing the 1.2 database. But there maybe a simpler (neo4j > >>>>>> builtin) way to do this. Any hints about this? > >>>>>> > >>>>>> Thanks, > >>>>>> --- > >>>>>> balazs > >>>>>> _______________________________________________ > >>>>>> Neo4j mailing list > >>>>>> [email protected] > >>>>>> https://lists.neo4j.org/mailman/listinfo/user > >>>>>> > >>>>> > >>>>> > >>>>> > >>>> _______________________________________________ > >>>> Neo4j mailing list > >>>> [email protected] > >>>> https://lists.neo4j.org/mailman/listinfo/user > >>>> > >>> > >>> > >>> > >> _______________________________________________ > >> Neo4j mailing list > >> [email protected] > >> https://lists.neo4j.org/mailman/listinfo/user > >> > > > > > > > _______________________________________________ > Neo4j mailing list > [email protected] > https://lists.neo4j.org/mailman/listinfo/user > -- Tobias Ivarsson <[email protected]> Hacker, Neo Technology www.neotechnology.com Cellphone: +46 706 534857 _______________________________________________ Neo4j mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user
