CODEWITHSUNDEEP
javaserializationxml-serializationxstream
Ant Kutschera
Ant Kutschera

Reputation: 6588

XStream: Deserialisation of a serialised java.sql.Time causes error

The following code throws an exception, which I didn't expect at all!

        long now = System.currentTimeMillis();
        java.sql.Time t1 = new java.sql.Time(now);
        String s1 = new XStream().toXML(t1);
        java.sql.Time t2 = (java.sql.Time) new XStream().fromXML(s1);
        if(!t1.equals(t2)) throw new IllegalArgumentException();

See XStream

The question is, why, and is it a bug in XStream?

Upvotes: 0

Views: 156

Answers (1)

johusman
johusman

Reputation: 3472

A quick Google search gives that XStream uses this class to serialize java.sql.Time: http://x-stream.github.io/javadoc/com/thoughtworks/xstream/converters/extended/SqlTimeConverter.html

Note the warning:

Converts a java.sql.Time to text. Warning: Any granularity smaller than seconds is lost.

So it's being truncated to an even second, and thus the comparison with the original (which has milliseconds) fails.

Upvotes: 1

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