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From Craig L Russell <Craig.Russ...@Sun.COM>
Subject Re: JDO 2.1 Chapter 12.17 improvement
Date Thu, 09 Aug 2007 01:07:01 GMT
Hi Jörg,

I have no issue with your suggestion.

Does anyone object? Like an implementation who would have to actually  
do the work? JPOX?

Craig

On Aug 6, 2007, at 3:57 AM, joerg.von.frantzius@artnology.com wrote:

> Hello Craig,
>
> I had a quick look at the draft, and, next to feeling honoured, I  
> was particularly happy to see chapter "12.17 Server Date". Only a  
> few weeks ago I made some bad experience with JPA/Hibernate with  
> the same problem of obtaining the current timestamp from the  
> database, with nanoseconds missing in particular. I'd like to  
> comment that having nanoseconds precision where available is very  
> desirable here.
>
> In my case I have to log some kind of events in the database, and  
> later on I need to deterministically retrieve them sorted by  
> timestamp of their occurrence. It turned out that a precision  
> milliseconds was a problem, because events often occured within the  
> same millisecond, so I ended up retrieving logged events in some  
> arbitrary order that was different from their real order of  
> occurrence.
>
> So I'd suggest something along the lines of the following in that  
> chapter:
>
> "The underlying implementation should return instances of  
> java.sql.Timestamp for databases that support nanosecond-precision  
> of date-time values."
>
> Regards,
> Jörg
>
> Zitat von Craig L Russell <Craig.Russell@Sun.COM>:
>
>> at http://db.apache.org/jdo/documentation.html
>>
>> Check it out, and send comments...
>>
>> Craig Russell
>> Architect, Sun Java Enterprise System http://java.sun.com/products/ 
>> jdo
>> 408 276-5638 mailto:Craig.Russell@sun.com
>> P.S. A good JDO? O, Gasp!
>
>
>

Craig Russell
Architect, Sun Java Enterprise System http://java.sun.com/products/jdo
408 276-5638 mailto:Craig.Russell@sun.com
P.S. A good JDO? O, Gasp!


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