Serialization of primitive maps is easy to implement since the maps pretty much just consist of a couple of arrays. Most of the developers involved will shy away from java serialization or any dependency on some other framework.
So is that really a show stopper? On Wed, Nov 6, 2013 at 6:11 AM, Gary Gregory <garydgreg...@gmail.com> wrote: > On Tue, Nov 5, 2013 at 11:49 PM, Gary Gregory <garydgreg...@gmail.com > >wrote: > > > Thank you all for replying. > > > > HPPC looks promising and it's Apache 2 licensed. I'll give it a closer > > look. > > > > HPPC does not allow for serialization and even says so, odd. Now looking at > fastutil... > > Gary > > > > > > Gary > > > > > > On Tue, Nov 5, 2013 at 8:59 PM, Ted Dunning <ted.dunn...@gmail.com> > wrote: > > > >> Trove is GPL (last I looked). > >> > >> Mahout has primitive collection implementations (and is obviously ASL). > >> > >> There are other implementations such as hppc (see > >> http://labs.carrotsearch.com/hppc.html ) > >> > >> Mahout is a decent implementation, but I think that hppc has had a round > >> or > >> two more optimization. > >> > >> And 150,000 entires in a table is not big for this sort of situation. > >> Anything short of Integer.MAX_VALUE/small_factor should be fine. > >> > >> > >> > >> > >> On Tue, Nov 5, 2013 at 5:49 PM, Bruno P. Kinoshita < > >> brunodepau...@yahoo.com.br> wrote: > >> > >> > Maybe Trove's TObjectMapLong? > >> > > >> > [1] > >> > > >> > http://trove4j.sourceforge.net/javadocs/gnu/trove/map/TObjectLongMap.html > >> > > >> > > >> > HTH, > >> > > >> > Bruno P. Kinoshita > >> > http://kinoshita.eti.br > >> > http://tupilabs.com > >> > > >> > > >> > >________________________________ > >> > > From: Gary Gregory <garydgreg...@gmail.com> > >> > >To: Commons Developers List <dev@commons.apache.org> > >> > >Sent: Tuesday, November 5, 2013 11:39 PM > >> > >Subject: I need a map for long and double > >> > > > >> > > > >> > >Hi All: > >> > > > >> > >I'm looking for a Map implementation that takes a String as a key > and a > >> > >long as the value (and another taking a double as the value). I'd > >> rather > >> > >not take the extra memory of using generic map with a Long object > value > >> > hit > >> > >since the maps will have up to 150,000 entries. That would save > me... a > >> > meg > >> > >for each map I am guestimating (on a 64-bit JVM). A meg here, a meg > >> > there... > >> > > > >> > >I did not see anything in [collections] or Google Guava. > >> > > > >> > >Thoughts? > >> > > > >> > >Gary > >> > > > >> > >-- > >> > >E-Mail: garydgreg...@gmail.com | ggreg...@apache.org > >> > >Java Persistence with Hibernate, Second Edition< > >> > http://www.manning.com/bauer3/> > >> > >JUnit in Action, Second Edition <http://www.manning.com/tahchiev/> > >> > >Spring Batch in Action <http://www.manning.com/templier/> > >> > >Blog: http://garygregory.wordpress.com > >> > >Home: http://garygregory.com/ > >> > >Tweet! http://twitter.com/GaryGregory > >> > > > >> > > > >> > > > >> > > >> > > > > > > > > -- > > E-Mail: garydgreg...@gmail.com | ggreg...@apache.org > > Java Persistence with Hibernate, Second Edition< > http://www.manning.com/bauer3/> > > JUnit in Action, Second Edition <http://www.manning.com/tahchiev/> > > Spring Batch in Action <http://www.manning.com/templier/> > > > > Blog: http://garygregory.wordpress.com > > Home: http://garygregory.com/ > > Tweet! http://twitter.com/GaryGregory > > > > > > -- > E-Mail: garydgreg...@gmail.com | ggreg...@apache.org > Java Persistence with Hibernate, Second Edition< > http://www.manning.com/bauer3/> > JUnit in Action, Second Edition <http://www.manning.com/tahchiev/> > Spring Batch in Action <http://www.manning.com/templier/> > Blog: http://garygregory.wordpress.com > Home: http://garygregory.com/ > Tweet! http://twitter.com/GaryGregory >
