JAXB2, XMLGregorianCalendar, JODA, JSR310

The variants of xs:date as defined in the XML Schema are mapped to XMLGregorianCalendar by JAXB2. XGC is not a very fun class to work with. JODA is an open source date time API implementation that is available in the open source world, which is the primary driver behind the JSR-310 specification.

Here is an email thread in JSR-310 that summarises the mapping of xs:date and JODA/JSR 310.

Email Link

Revert a change in SVN commit

Suppose you have made an erroneous commit on a particular file, then you can employ the following strategy.


Assume the file we are looking at is SecurityDomainObjectFactory.

Step 1: Do a SVN log on that particular file.

anil@localhost:$ svn log SecurityDomainObjectFactory.java | head -n 25
------------------------------------------------------------------------
r88837 | anil | 2009-05-13 16:55:08 -0500 (Wed, 13 May 2009) | 1 line

JBAS-6857: merge in rev 88834 from trunk
------------------------------------------------------------------------
r85945 | dimitris | 2009-03-16 14:45:12 -0500 (Mon, 16 Mar 2009) | 1 line


Step 2: Determine the two revisions.
In this case, the most recent is 88837 (anil) and 85945(dimitris).


Step 3: Merge it back
$ svn merge -r88837:85945 SecurityDomainObjectFactory.java

Step 4: SVN diff to see the changes are reverted

Step 5: Check in the reverted file
$> svn ci -m "revert the unintentional change" SecurityDomainObjectFactory.java

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JAXB: Pretty print xml in marshalling

Marshaller marshaller = .....
marshaller.setProperty( Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE );

That should do the trick.