[
https://issues.apache.org/jira/browse/MATH-742?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13211342#comment-13211342
]
Luc Maisonobe commented on MATH-742:
------------------------------------
bq. I guess that the most trivial problem is serializing with some version of
the library and deserializing with another where the internal structure has
changed in the meantime (e.g. substituting one instance variable with another
that would provide the same basic functionality).
I think we can simply say this is not supported. Serialization should not be
used for long time storage, and even if it can be used for distributed
computation with different versions between client and server, we can simply
say we don't support it.
bq. Those concerns might be far-fetched and we are totally entitled to ignore
them in standalone applications but in the case of a library, we should not
presume of the innocuousness of anything we put in.
+1 for the concerns of a library, but there are many cases when a simple
"implements Serializable" is sufficient and does not imply too much work.
Could we go for a case by case policy ? There are some classes where
serialization could help users and not be too cumbersome. This is a trade off
between forbidding serialization completely and supporting it for all classes
in a guaranteed way with cross-version support.
> Please make PolynomialSplineFunction Serializable
> -------------------------------------------------
>
> Key: MATH-742
> URL: https://issues.apache.org/jira/browse/MATH-742
> Project: Commons Math
> Issue Type: Improvement
> Affects Versions: 2.2
> Reporter: Neil Roeth
> Priority: Minor
> Attachments: PolynomialSplineFunction.java
>
>
> PolynomialSplineFunction is not Serializable, while the very similar
> PolynomialFunction class in the same package is. All that needs to be done is
> to add the import:
> {{import java.io.Serializable;}}
> and change this:
> {{public class PolynomialSplineFunction implements
> DifferentiableUnivariateRealFunction}}
> to this:
> {{public class PolynomialSplineFunction implements
> DifferentiableUnivariateRealFunction, Serializable}}
> I made exactly that modification to a local copy and it serialized
> successfully. Before the change, I got serialization errors.
> Thanks.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
