Return-Path: 
 <dev-return-80037-apmail-ant-dev-archive=ant.apache.org@ant.apache.org>
Delivered-To: apmail-ant-dev-archive@www.apache.org
Received: (qmail 64672 invoked from network); 24 Jul 2007 18:08:27 -0000
Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2)
  by minotaur.apache.org with SMTP; 24 Jul 2007 18:08:27 -0000
Received: (qmail 52654 invoked by uid 500); 24 Jul 2007 18:08:27 -0000
Delivered-To: apmail-ant-dev-archive@ant.apache.org
Received: (qmail 52613 invoked by uid 500); 24 Jul 2007 18:08:27 -0000
Mailing-List: contact dev-help@ant.apache.org; run by ezmlm
Precedence: bulk
List-Unsubscribe: <mailto:dev-unsubscribe@ant.apache.org>
List-Help: <mailto:dev-help@ant.apache.org>
List-Post: <mailto:dev@ant.apache.org>
List-Id: "Ant Developers List" <dev.ant.apache.org>
Reply-To: "Ant Developers List" <dev@ant.apache.org>
Delivered-To: mailing list dev@ant.apache.org
Received: (qmail 52592 invoked by uid 99); 24 Jul 2007 18:08:27 -0000
Received: from herse.apache.org (HELO herse.apache.org) (140.211.11.133)
    by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 24 Jul 2007 11:08:27 -0700
X-ASF-Spam-Status: No, hits=0.0 required=10.0
	tests=
X-Spam-Check-By: apache.org
Received-SPF: pass (herse.apache.org: local policy)
Received: from [206.190.58.152] (HELO web55103.mail.re4.yahoo.com)
 (206.190.58.152)
    by apache.org (qpsmtpd/0.29) with SMTP; Tue, 24 Jul 2007 11:08:23 -0700
Received: (qmail 62621 invoked by uid 60001); 24 Jul 2007 18:08:02 -0000
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws;
  s=s1024; d=yahoo.com;
  h=X-YMail-OSG:Received:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-ID;
  b=B5JbMYDoJkBKmfhpPVHZJJ/1cNaKGabRY06JL6educ9UZGSNwkRrDRrw6fr+lE61eEm0FohRdpGOEpMW4lABGdByHlKnD6pVoImrIIkCKGBSEi5vvdf4Y4CO9Mlcuz33K9h/DnASGgKTuvtG6JtIPlNpjBJqHw3mYeye2MlCm5w=;
X-YMail-OSG: 
 tHQSoUMVM1mikl7aFDlNPf0QyH_BvyKQvsq3ownLDSAXCAE6T7JHow1NsheBvXq_CVPxZDIt6VIcTqIk_GG_Cfrwols5Dvz4x.IiN6kfAg629JTMuXWPGeXztq54ig--
Received: from [66.10.233.130] by web55103.mail.re4.yahoo.com via HTTP;
 Tue, 24 Jul 2007 11:08:02 PDT
Date: Tue, 24 Jul 2007 11:08:02 -0700 (PDT)
From: Matt Benson <gudnabrsam@yahoo.com>
Subject: Re: svn commit: r559096 - in /ant/core/trunk: WHATSNEW
 src/main/org/apache/tools/ant/types/Path.java
To: Ant Developers List <dev@ant.apache.org>
In-Reply-To: <255d8d690707240945p797f4b14ja2cbc9e036dbbc08@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: 8bit
Message-ID: <578959.62365.qm@web55103.mail.re4.yahoo.com>
X-Virus-Checked: Checked by ClamAV on apache.org


--- Dominique Devienne <ddevienne@gmail.com> wrote:

> Matt, did you test this? You write that derive
> classes can override
> delegateIteratorToList() to return false, but this
> is used to init a
> class member of Path, i.e. the *super* class of the
> one supposed to do
> the overriding...
> 
> Assuming a MyPath extends Path, Path's members and
> Ctors are called
> before MyPath is initialized, so relying on virtual
> dispatch on a
> class that's not been initialized yet is fraught
> with trouble. Perhaps
> it works OK if MyPath.delegateIteratorToList() just
> returns false, but
> why not simply forgo the caching into preserveBC and
> systematically
> call delegateIteratorToList() when needed, at a time
> MyPath is fully
> initialized?
> 

Certainly this could be done, but I was looking to
avoid the expense of multiple reflection-based checks.
 Do you think it would be better to store a Boolean so
that the call could still be made only once (triggered
by the null reference), but deferred until after
initialization?

-Matt

> --DD
> 
> On 7/24/07, mbenson@apache.org <mbenson@apache.org>
> wrote:
> > +    private final boolean preserveBC =
> delegateIteratorToList();
> 
> > +    /**
> > +     * that implements <code>list()</code>; this
> can, of course, be avoided by overriding
> > +     * this method to return <code>false</code>.
> It is not expected that the result of this
> 
>
---------------------------------------------------------------------
> To unsubscribe, e-mail:
> dev-unsubscribe@ant.apache.org
> For additional commands, e-mail:
> dev-help@ant.apache.org
> 
> 



       
____________________________________________________________________________________
Need a vacation? Get great deals
to amazing places on Yahoo! Travel.
http://travel.yahoo.com/

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@ant.apache.org
For additional commands, e-mail: dev-help@ant.apache.org