Return-Path: 
 <users-return-9352-apmail-openjpa-users-archive=openjpa.apache.org@openjpa.apache.org>
X-Original-To: apmail-openjpa-users-archive@minotaur.apache.org
Delivered-To: apmail-openjpa-users-archive@minotaur.apache.org
Received: from mail.apache.org (hermes.apache.org [140.211.11.3])
	by minotaur.apache.org (Postfix) with SMTP id 674316A42
	for <apmail-openjpa-users-archive@minotaur.apache.org>;
 Thu,  4 Aug 2011 14:00:50 +0000 (UTC)
Received: (qmail 89592 invoked by uid 500); 4 Aug 2011 14:00:50 -0000
Delivered-To: apmail-openjpa-users-archive@openjpa.apache.org
Received: (qmail 89556 invoked by uid 500); 4 Aug 2011 14:00:49 -0000
Mailing-List: contact users-help@openjpa.apache.org; run by ezmlm
Precedence: bulk
List-Help: <mailto:users-help@openjpa.apache.org>
List-Unsubscribe: <mailto:users-unsubscribe@openjpa.apache.org>
List-Post: <mailto:users@openjpa.apache.org>
List-Id: <users.openjpa.apache.org>
Reply-To: users@openjpa.apache.org
Delivered-To: mailing list users@openjpa.apache.org
Received: (qmail 89548 invoked by uid 99); 4 Aug 2011 14:00:49 -0000
Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230)
    by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 04 Aug 2011 14:00:49 +0000
X-ASF-Spam-Status: No, hits=1.6 required=5.0
	tests=FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FROM,HTML_MESSAGE,RCVD_IN_DNSWL_LOW,SPF_PASS,T_TO_NO_BRKTS_FREEMAIL
X-Spam-Check-By: apache.org
Received-SPF: pass (nike.apache.org: domain of curtisr7@gmail.com designates
 209.85.215.170 as permitted sender)
Received: from [209.85.215.170] (HELO mail-ey0-f170.google.com)
 (209.85.215.170)
    by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 04 Aug 2011 14:00:42 +0000
Received: by eyd10 with SMTP id 10so961592eyd.15
        for <users@openjpa.apache.org>; Thu, 04 Aug 2011 07:00:21 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=gmail.com; s=gamma;
        h=mime-version:in-reply-to:references:date:message-id:subject:from:to
         :content-type;
        bh=XMeqo0cKWg03z5LcPO+v+2R9vCgGO40FbcFWbR0nfls=;
        b=tSeRjh93HaPqYUcX/OBU5r/MT0ZB+a1S6w43v5fEysrJQWjedxgvHmHzMzZf/tDaeA
         v6s1z08Jw5THEUT0QhN/ogqeeFOhxBJlioV/qV6RFJ56zj3N+qUFBDWKRhAY1bpC7uGE
         S9GMGZnI/icj/XI0qpDABTwwpo3EYWHiZVt8U=
MIME-Version: 1.0
Received: by 10.213.7.199 with SMTP id e7mr672134ebe.140.1312466421477; Thu,
 04 Aug 2011 07:00:21 -0700 (PDT)
Received: by 10.213.26.9 with HTTP; Thu, 4 Aug 2011 07:00:21 -0700 (PDT)
In-Reply-To: <E57CB3D72B96FC46AABD2F7D238027870FA9BDBF1D@CL-DE-EXMB-02.sma.de>
References: <E57CB3D72B96FC46AABD2F7D238027870FA9BDBF1D@CL-DE-EXMB-02.sma.de>
Date: Thu, 4 Aug 2011 09:00:21 -0500
Message-ID: 
 <CAP=qHCv+7KDzVhSFT8VA5y0j0X-dvNOm6uY=CPvqMFVuT6NcOA@mail.gmail.com>
Subject: Re: NullpointerException when accessing a lazy association after
 merging the object without a fetch of the lazy entities
From: Rick Curtis <curtisr7@gmail.com>
To: users@openjpa.apache.org
Content-Type: multipart/alternative; boundary=0015174c45c2d4f1f804a9ae66cb
X-Virus-Checked: Checked by ClamAV on apache.org

--0015174c45c2d4f1f804a9ae66cb
Content-Type: text/plain; charset=ISO-8859-1

I don't see any issues. Is it possible that you have a TestEntity in your DB
that doesn't have any children (bad data) in your DB from a previous run?

Also, why are you calling em.merge(..)? That call is unnecessary as the
results from your query already are a part of your persistence context.

Thanks,
Rick

On Thu, Aug 4, 2011 at 7:51 AM, Michael Pflueger <Michael.Pflueger@sma.de>wrote:

> Hi,
>
> I'm digging through some of my OpenJPA problems and came across this issue.
> I get a NPE when I access te2.getChildren().xyz(), but only when I merge
> the object before the access AND the lazy association is not yet fetched AND
> I set Cascadetype.MERGE on the association.
>
>                List<TestEntity> entities = query.getResultList();
>                for (TestEntity te : entities) {
>                        TestEntity te2 = em.merge(te);
>                        System.out.println(te2.getChildren().size());
>                }
>
> I'm using OpenJPA 2.1.0 with the MySQL connector.
> Attached is the full source and persistence.xml.
>
> Can anybody reproduce this and is this a bug?
>
> Regards,
> Michael
> ___________________________________________________
>
> SMA Solar Technology AG
> Aufsichtsrat: Guenther Cramer (Vorsitzender)
> Vorstand: Juergen Dolle, Roland Grebe, Uwe Hertel, Pierre-Pascal Urbon,
> Marko Werner
> Handelsregister: Amtsgericht Kassel HRB 3972
> Sitz der Gesellschaft: 34266 Niestetal
> USt-ID-Nr. DE 113 08 59 54
> WEEE-Reg.-Nr. DE 95881150
> ___________________________________________________
>



-- 
*Rick Curtis*

--0015174c45c2d4f1f804a9ae66cb--