Difference between revisions of "JavaUUID"
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| − | We conformed with Java 6 Spec by adding serialised uuid's to java classes in rev | + | We conformed with Java 6 Spec by adding serialised uuid's to java classes in rev 8996 |
This helps to control serialised classes which may not be backward compatible. Whenever there is a risk of this, we should change the uuid in the relevant class. | This helps to control serialised classes which may not be backward compatible. Whenever there is a risk of this, we should change the uuid in the relevant class. | ||
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References: | References: | ||
| − | * Java | + | * Java Spec: http://java.sun.com/javase/6/docs/platform/serialization/spec/version.html#5172 |
* Forum Thread: https://sourceforge.net/forum/forum.php?thread_id=3185123&forum_id=610548 | * Forum Thread: https://sourceforge.net/forum/forum.php?thread_id=3185123&forum_id=610548 | ||
* Tracker: https://sourceforge.net/tracker/?func=detail&aid=2740259&group_id=176962&atid=879332 | * Tracker: https://sourceforge.net/tracker/?func=detail&aid=2740259&group_id=176962&atid=879332 | ||
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| + | =Links= | ||
| + | *[[OSGI HengSin/UUID Generator]] | ||
[[Category:Community]] | [[Category:Community]] | ||
[[Category:Development]] | [[Category:Development]] | ||
[[Category:Developer documentation]] | [[Category:Developer documentation]] | ||
Latest revision as of 16:39, 27 December 2010
We conformed with Java 6 Spec by adding serialised uuid's to java classes in rev 8996
This helps to control serialised classes which may not be backward compatible. Whenever there is a risk of this, we should change the uuid in the relevant class.
Summarised by Carlos Ruiz:
The developer needs to regenerate the serialversionID when:
- Deleting fields
- Moving classes up or down the hierarchy
- Changing a nonstatic field to static or a nontransient field to transient
- Changing the declared type of a primitive field
- Changing the writeObject or readObject method
- Changing a class from Serializable to Externalizable or vice versa
- Changing a class from a non-enum type to an enum type or vice versa
- Removing either Serializable or Externalizable
- Adding the writeReplace or readResolve method
References:
- Java Spec: http://java.sun.com/javase/6/docs/platform/serialization/spec/version.html#5172
- Forum Thread: https://sourceforge.net/forum/forum.php?thread_id=3185123&forum_id=610548
- Tracker: https://sourceforge.net/tracker/?func=detail&aid=2740259&group_id=176962&atid=879332
