[rules-users] Evaluating an attribute of an object in Arraylist

[Rafael Alcemar]

Edson, could you write below an example for this case?

How Could I do it? Like this:  *$list : ArrayList() from 
locacoes(cliente == $motorista(nome) ) * or *$m: from 
locacoes(cliente==$motorista(nome))*????

I'm really needing it, so sorry if my questions are very basic.

Thanks!
Rafael Alcemar

Edson Tirelli escreveu:
>    Use the "from" CE. Something like:
>
> Fact( ... ) from yourGlobalList
>
>
> 2007/9/27, Rafael Alcemar <rafael.alcemar at gmail.com 
> <mailto:rafael.alcemar at gmail.com>>:
>
>     Rafael Alcemar escreveu:
>     > Thanks for your answer but I forgot to say that I want to use the
>     > gloabal variable *locacoes*. *locacoes *is an ArrayList containing a
>     > list of umLocacaoImediata. How do I iterate over *locacoes* and
>     > discover if there is an object with the same name of the variable
>     > $motorista???
>     >
>     > Thanks!
>     > Rafael Alcemar
>     >
>     > Chris Woodrow escreveu:
>     >> Hi,
>     >> Doesn't (client == $motorista.nome) work?
>     >>
>     >> 2007/9/26, Rafael Alcemar < rafael.alcemar at gmail.com
>     <mailto:rafael.alcemar at gmail.com>
>     >> <mailto:rafael.alcemar at gmail.com
>     <mailto:rafael.alcemar at gmail.com>>>:
>     >>
>     >>     Hello guys, i'm trying to seek an object in an ArrayList,
>     but I
>     >>     don't know how I do it. I'm inserting this list as a global
>     >>     variable into drools, but I'd like to check if there is an
>     ojbect
>     >>     in this list with a specific name. Could Anybody help me? The
>     >>     code is below:
>     >>
>     >>     global java.util.List locacoes
>     >>
>     >>     rule "Cliente pode alugar"
>     >>         when
>     >>             $motorista : umMotorista()
>     >>     //        $list : ArrayList() from collect( umLocacaoImediata(
>     >>     cliente == $motorista(nome) ) )
>     >>         then
>     >>             $motorista.setPodeAlugar(false);
>     >>             System.out.println($motorista.getNome() + " já
>     possui uma
>     >>     alocacao");
>     >>             update($motorista);
>     >>     end
>     >>
>     >>     I'm trying to compare the attribute cliente from
>     >>     umLocacaoImediata with the attribute nome from motorista.
>     How do
>     >>     I do it?
>     >>
>     >>     If anybody can help me with the right way to do it, answer this
>     >>     mail, please.
>     >>
>     >>     Rafael Alcemar
>     >>
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>     >>
>     >>
>     >>
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> -- 
>   Edson Tirelli
>   Software Engineer - JBoss Rules Core Developer
>   Office: +55 11 3529-6000
>   Mobile: +55 11 9287-5646
>   JBoss, a division of Red Hat @ www.jboss.com <http://www.jboss.com>
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