Groups > comp.lang.java.programmer > #12555

Re: lookup by EnumSet

From	Robert Klemme <shortcutter@googlemail.com>
Newsgroups	comp.lang.java.programmer
Subject	Re: lookup by EnumSet
Date	2012-03-01 01:22 -0800
Organization	http://groups.google.com
Message-ID	<20927599.22.1330593736666.JavaMail.geo-discussion-forums@yner4> (permalink)
References	<3kmpk7lno3fehkr0o21b4dqvhoijmpehbq@4ax.com> <9r51jgF5nlU2@mid.individual.net>

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On Tuesday, February 28, 2012 11:08:47 PM UTC+1, Robert Klemme wrote:
> You need a multi dimensional index which can efficiently select from any 
> subset of dimensions given.  Whether properties are boolean or need more 
> than one bit to represent is just a minor challenge here.

Just stumbled on this: "HyperDex employs a unique multi-dimensional hash function to enable efficient search operations — that is, objects may be retrieved without using the key (PDF) under which they are stored"

http://hardware.slashdot.org/story/12/02/22/1732221/is-it-time-for-nosql-20

Kind regards

robert

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lookup by EnumSet Roedy Green <see_website@mindprod.com.invalid> - 2012-02-28 05:55 -0800
  Re: lookup by EnumSet Peter Duniho <NpOeStPeAdM@NnOwSlPiAnMk.com> - 2012-02-28 07:03 -0800
    Re: lookup by EnumSet Roedy Green <see_website@mindprod.com.invalid> - 2012-02-28 15:22 -0800
  Re: lookup by EnumSet Leif Roar Moldskred <leifm@dimnakorr.com> - 2012-02-28 09:27 -0600
    Re: lookup by EnumSet Lew <noone@lewscanon.com> - 2012-02-28 09:31 -0800
      Re: lookup by EnumSet Robert Klemme <shortcutter@googlemail.com> - 2012-02-28 23:08 +0100
  Re: lookup by EnumSet Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2012-02-28 08:51 -0800
  Re: lookup by EnumSet Robert Klemme <shortcutter@googlemail.com> - 2012-02-28 23:08 +0100
    Re: lookup by EnumSet Robert Klemme <shortcutter@googlemail.com> - 2012-03-01 01:22 -0800
  Re: lookup by EnumSet Wanja Gayk <brixomatic@yahoo.com> - 2012-02-29 11:06 +0100

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