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List:       nepomuk
Subject:    Re: [Nepomuk] Query API - method return types
From:       Sebastian Trüg <sebastian () trueg ! de>
Date:       2012-03-12 10:31:56
Message-ID: 4F5DD09C.3040401 () trueg ! de
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I agree. :)

On 03/10/2012 11:01 AM, Ivan Čukić wrote:
> Hi,
> 
> A RFC regarding the query API for Nepomuk in KF5.
> 
> Proposal:
> 
> Methods that modify a Term and currently return void should return a
> reference to (*this) that is Term &.
> 
> Reasoning:
> 
> Database query languages are functional in nature, so should be the
> query building apis like this one.
> 
> By defining the method return type as void, we need to define separate
> variables if we want to change some term before inclusion into the
> main term (non-functional approach):
> 
>         ComparisonTerm related = ComparisonTerm(something, something);
>         related.setInverted(true);
>         ResourceTypeTerm(NFO::FileDataObject()) && related;
> 
> Instead of being able to write it as:
> 
>         ResourceTypeTerm(NFO::FileDataObject()) &&
>         ComparisonTerm(something, something).setInverted(true)
> 
> I'm in a hurry, so this is not really worded properly, but you'll get
> the gist I think :)
> 
> 
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