Path: csiph.com!usenet.pasdenom.info!aioe.org!.POSTED!not-for-mail From: =?UTF-8?Q?Arne_Vajh=c3=b8j?= Newsgroups: comp.lang.java.programmer Subject: Re: From JDBC to JPA Date: Sat, 25 Jul 2015 23:45:55 -0400 Organization: Aioe.org NNTP Server Lines: 46 Message-ID: References: <87380doatw.fsf@Equus.decebal.nl> <87y4i5mig2.fsf@Equus.decebal.nl> <87oaj0vdj9.fsf@Equus.decebal.nl> NNTP-Posting-Host: bLmKSxgyEsD8qtT7wjgUDQ.user.speranza.aioe.org Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-Complaints-To: abuse@aioe.org User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.1.0 X-Notice: Filtered by postfilter v. 0.8.2 Xref: csiph.com comp.lang.java.programmer:32143 On 7/25/2015 4:37 AM, Cecil Westerhof wrote: > On Saturday 25 Jul 2015 06:23 CEST, Eternal Hope wrote: > >> On 24/07/2015 21:03, Cecil Westerhof wrote: >>> On Friday 24 Jul 2015 18:53 CEST, Eternal Hope wrote: >>> >>>> On 24/07/2015 16:05, Cecil Westerhof wrote: >>>>> I need to change the use of JDBC to JPA in a range of >>>>> applications. I am new to JPA. Anyone good tips or links on how >>>>> to accomplish this? Until now I did not find anything very useful >>>>> with Google. >>>> >>>> http://openjpa.apache.org/ >>>> >>>> http://openjpa.apache.org/builds/2.4.0/apache-openjpa/docs/manual.pdf >>> >>> That the best documentation is for a certain implementation and not >>> from JPA is a bad omen. :'-( >> >> Not sure what you mean by 'from JPA' JPA is a specification >> currently 'owned and maintained' by Larry and his pals. > > I mend that when I am told to read the openJPA documentation instead > of the JPA documentation that I find this not a good sign. Don't worry. It quite common that: - the official specification of the standard is hard to read - most people prefer to read: - documentation for a specific implementation - third party tutorials My guess is that you did not learn Java from reading the JLS but instead read either the Java tutorial (from one particular Java vendor!) or bought a few books. :-) If that OpenJPA documentation is good then it will clearly explain what is standard and maybe provide a few implementation specific extras. Arne