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Date: Fri, 12 Jun 2009 21:56:52 +0000 (GMT)
From: Adrian Gonzalez <adr_gonzalez@yahoo.fr>
Subject: Re : Re : Convert List to Map
To: Commons Users List <user@commons.apache.org>
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That's exactly what I was talking about !=0A=0AHas it done its way to commo=
ns collection ? (I don't see it in 3.2.1 or in JIRA)=0A=0ACode extract from=
 http://mail-archives.apache.org/mod_mbox/commons-dev/200709.mbox/<f2e8eedf=
0709032030s1665dd5g36797577927d221c@mail.gmail.com> :=0A=0AMap<K,V> Collect=
ionUtils.toMap(Collection<C> input,=0ATransformer<C,K> keyTransformer, Tran=
sformer<C,V>=0AvalueTransformer, Map<K,V> map)=0Aor=0AMap<K,V> CollectionUt=
ils.toMap(Collection<C> input,=0ATransformer<C,K> keyTransformer, Transform=
er<C,V>=0AvalueTransformer)=0A=0A=0A=0A=0A=0A=0A=0A________________________=
________=0ADe : James Carman <james@carmanconsulting.com>=0A=C0 : Commons U=
sers List <user@commons.apache.org>=0AEnvoy=E9 le : Vendredi, 12 Juin 2009,=
 17h27mn 03s=0AObjet : Re: Re : Convert List to Map=0A=0AWe had a discussio=
n of something like what you're asking for in the past:=0A=0Ahttp://mail-ar=
chives.apache.org/mod_mbox/commons-dev/200709.mbox/<f2e8eedf0709032030s1665=
dd5g36797577927d221c@mail.gmail.com>=0A=0A=0AOn Fri, Jun 12, 2009 at 10:55 =
AM, Adrian Gonzalez<adr_gonzalez@yahoo.fr> wrote:=0A> Thanks=0A>=0A> Your s=
ample works fine for my use case (that's exactly what I'm doing in my code)=
, but I was wondering about such utility thing just after looking at :=0A> =
http://commons.apache.org/collections/api-release/org/apache/commons/collec=
tions/map/TransformedMap.html#decorate(java.util.Map,%20org.apache.commons.=
collections.Transformer,%20org.apache.commons.collections.Transformer)=0A> =
which is a map-to-map conversions.=0A>=0A> Since commons-collection provide=
s map-to-map conversion, why does'nt it provide list-to-map conversion with=
 the same logic ?=0A>=0A>=0A>=0A>=0A>=0A> ________________________________=
=0A> De : Ted Dunning <ted.dunning@gmail.com>=0A> =C0 : Commons Users List =
<user@commons.apache.org>=0A> Envoy=E9 le : Jeudi, 11 Juin 2009, 23h12mn 10=
s=0A> Objet : Re: Convert List to Map=0A>=0A> How is this easier than this:=
=0A>=0A> Map m =3D new HashMap();=0A> for (SpecificObject x : list) {=0A>  =
  m.put(s.getId(), s.getDescription());=0A> }=0A>=0A> ?=0A>=0A> Why make th=
is soo much harder than it needs to be?=0A>=0A> On Wed, Jun 10, 2009 at 12:=
19 PM, Adrian Gonzalez <adr_gonzalez@yahoo.fr>wrote:=0A>=0A>> Hello,=0A>>=
=0A>> I have the same question as=0A>> http://mail-archives.apache.org/mod_=
mbox/commons-user/200509.mbox/%3C878e7290050905002752ed543d@mail.gmail.com%=
3E:=0A>>=0A>> I need to do a lot of list-to-map conversions, and I'm lookin=
g for a way to=0A>> use commons collections for this.=0A>> I would like to =
do something like this:=0A>>=0A>> Map map =3D ListUtils.toMap(list, new Som=
eTransformerInterface() {=0A>>    void insertIntoMap(Object object, Map map=
) {=0A>>    SpecificObject s =3D (SpecificObject) object;=0A>>    map.put(s=
.getId(), s.getDescription());=0A>>    }=0A>> });=0A>>=0A>> Is there a way =
to do that with commons collection ?=0A>>=0A>> Thank you very much=0A>>=0A>=
>=0A>>=0A>=0A>=0A>=0A>=0A> --=0A> Ted Dunning, CTO=0A> DeepDyve=0A>=0A> 111=
 West Evelyn Ave. Ste. 202=0A> Sunnyvale, CA 94086=0A> http://www.deepdyve.=
com=0A> 858-414-0013 (m)=0A> 408-773-0220 (fax)=0A>=0A>=0A>=0A>=0A=0A------=
---------------------------------------------------------------=0ATo unsubs=
cribe, e-mail: user-unsubscribe@commons.apache.org=0AFor additional command=
s, e-mail: user-help@commons.apache.org=0A=0A=0A      
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