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 <1295425384.5603.20.camel@te-laptop>
Date: Wed, 19 Jan 2011 06:47:00 -0800 (PST)
From: Dennis Gearon <gearond@sbcglobal.net>
Subject: Re: unix permission styles for access control
To: solr-user@lucene.apache.org, te@statsbiblioteket.dk
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so fieldName.x ishow to address bits?=0A=0A Dennis Gearon=0A=0A=0ASignature=
 Warning=0A----------------=0AIt is always a good idea to learn from your o=
wn mistakes. It is usually a better =0Aidea to learn from others=E2=80=99 m=
istakes, so you do not have to make them yourself. =0Afrom 'http://blogs.te=
chrepublic.com.com/security/?p=3D4501&tag=3Dnl.e036'=0A=0A=0AEARTH has a Ri=
ght To Life,=0Aotherwise we all die.=0A=0A=0A=0A----- Original Message ----=
=0AFrom: Toke Eskildsen <te@statsbiblioteket.dk>=0ATo: "solr-user@lucene.ap=
ache.org" <solr-user@lucene.apache.org>=0ASent: Wed, January 19, 2011 12:23=
:04 AM=0ASubject: Re: unix permission styles for access control=0A=0AOn Wed=
, 2011-01-19 at 08:15 +0100, Dennis Gearon wrote:=0A> I was wondering if th=
e are binary operation filters? Haven't seen any in the =0A> book nor was a=
ble to find any using google.=0A> =0A> So if I had 0600(octal) in a permiss=
ion field, and I wanted to return any =0A> records that 'permission & 0400(=
octal)=3D=3DTRUE', how would I filter that?=0A=0ADon't you mean permission =
& 0400(octal) =3D=3D 0400? Anyway, the=0Afunctionality can be accomplished =
by extending your index a bit.=0A=0A=0AYou could split the permission into =
user, group and all parts, then use=0Aan expanded query.=0A=0AIf the permis=
sion is 0755 it will be indexed as=0Auser_p:7 group_p:5 all_p:5=0A=0AIf you=
're searching for something with at least 0650 your query should=0Abe expan=
ded to =0A(user_p:7 OR user_p:6) AND (group_p:7 OR group_p:5)=0A=0A=0AAlter=
natively you could represent the bits explicitly in the index:=0Auser_p:1 u=
ser_p:2 user_p:4 group_p:1 group_p:4 all_p:1 all_p:5=0A=0AThen a search for=
 0650 would query with=0Auser_p:2 AND user_p:4 AND group_p:1 AND group_p:4=
=0A=0A=0AFinally you could represent all valid permission values, still spl=
it=0Ainto parts with=0Auser_p:1 user_p:2 user_p:3 user_p:4 user_p:5 user_p:=
6 user_p:7=0Agroup_p:1 group_p:2 group_p:3 group_p:4 group_p:5=0Aall_p:1 al=
l_p:2 all_p:3 all_p:4 all_p:5=0A=0AThe query would be simply=0Auser_p:6 AND=
 group_p:5