I still don't know what the difference between my test and server environments
was, but for whatever reason on the server my persistence system was storing my
Date objects as java.sql.timestamp and my loca environment was using
java.util.Date. The problem, then is that ISO8601DateConverter only converts
date classes, not subclasses. But this isn't as easy a fix as it first appears:
- First Subclass ISO8601DateConverter to convert all subclasses of
java.util.Date. One would think this would be enough:
public static ISO8601DateConverter DATE_CONVERTER = new
ISO8601DateConverter() {
@Override
public boolean canConvert(Class type) {
return Date.class.isAssignableFrom(type);
}
};
- At this point, XStream uses that converter, but for some reason, it retains
the class="sql-timestamp​" annotation, which no longer makes sense for that
converter. Now, if you use xstream to convert back, it will use the wrong
converter to convert the date back, an throw an excpetion. This code seems to
fix that:
protected XStream createXstream(MediaType mediaType) {
XStream ret = super.createXstream(mediaType);
ret.addDefaultImplementation(java.sql.Date.class,java.util.Date.class);
ret.addDefaultImplementation(java.sql.Timestamp.class,java.util.Date.class);
ret.addDefaultImplementation(java.sql.Time.class,java.util.Date.class);
ret.registerConverter(DATE_CONVERTER);
return ret;
}
Obviously, this is an xstream issue, but since I first posted here, I thought I
would post the solution. Also, it would be nice if there was an easier wayto
change restlet converters since that was another hoop I had to jump through in
figuring this out.
bjorn
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