RFR (JAXP): 8033980 : Xerces Update: datatype XMLGregorianCalendarImpl and DurationImpl

huizhe wang huizhe.wang at oracle.com
Fri Feb 14 17:35:05 UTC 2014

Hi All,

I added a SerializationTest. The test contains a helper that can 
generate serialization files for XMLGregorianCalendar and Duration. I've 
created such files for jdk6,7,8 and 9, and manually run the test, that 
is, read them back with JDK6, 7, 8 and 9. The test worked fine. In the 
JDK9(or 10 in the future) repo and for an auto-run, it would use the 
current JDK9/10 build and test against JDK6, 7, 8 and 9. Past JDK10, we 
could consider add serialization files for JDK10.

The new fields did not affect serialization compatibility. The above 
tests passed with/without the new fields being transient. But I added 
transient since it's the right thing to do.

Adding fields is a compatible change in accordance with Java Object 
Serialization Spec 


On 2/13/2014 6:23 AM, Alan Bateman wrote:
> On 13/02/2014 08:18, huizhe wang wrote:
>> Hi Alan, Lance, and Daniel,
>> The Xerces serialization revision meant to create a serialization 
>> form that would help maintain future serialization compatibility. But 
>> in reality it itself is causing significant incompatibility as Alan 
>> pointed out below and we discussed previously. I've removed the 
>> revision from the patch as a result.
>> Please see the new webrev here:
>> http://cr.openjdk.java.net/~joehw/jdk9/8033980/webrev/
> Thanks for dropping the serialization change as it was just not going 
> to work the way you had intended.
> I agree with Daniel's comment about all the new fields added to 
> XMLGregorianCalendarImpl as it's not clear why they aren't transient.
> I have not studied the rest of the changes but I think Daniel and 
> Lance are.
> -Alan

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