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author | Lukas Rytz <lukas.rytz@epfl.ch> | 2010-11-30 15:38:56 +0000 |
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committer | Lukas Rytz <lukas.rytz@epfl.ch> | 2010-11-30 15:38:56 +0000 |
commit | 4be5e11cccace4974ed9a449052455392570139f (patch) | |
tree | 88c86bc65b88df08b48584ed791acd1619983c0c /src/library/scala/annotation | |
parent | 402d96dd3fab6ae677966a9a258c00b3f34a37ed (diff) | |
download | scala-4be5e11cccace4974ed9a449052455392570139f.tar.gz scala-4be5e11cccace4974ed9a449052455392570139f.tar.bz2 scala-4be5e11cccace4974ed9a449052455392570139f.zip |
Deprecated the @serializable annotation, introd...
Deprecated the @serializable annotation, introduce a new trait
"scala.Serializable" which has to be extended instead (cross-platform).
Known issues:
- Companion objects of serializable classes (including case classes) are automatically made serializable. However, they don't extend "Serializable" statically because of the known difficulty (should be done before typing, but hard).
- Writing "case class C() extends Serializable" gives "error: trait Serializable is inherited twice"
- Functions are serializable, but don't extend Serializable dynamically (could be fixed by making FunctionN Serializable - shouldn't we?)
Note that @SerialVersionUID continues to be an annotation; it generates
a static field, which is not possible otherwise in scala.
Review by dragos, extempore.
Question to dragos: in JavaPlatform.isMaybeBoxed, why is there a test
for "JavaSerializableClass"? Is that correct?
Diffstat (limited to 'src/library/scala/annotation')
-rw-r--r-- | src/library/scala/annotation/serializable.scala | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/library/scala/annotation/serializable.scala b/src/library/scala/annotation/serializable.scala new file mode 100644 index 0000000000..1364d7dcce --- /dev/null +++ b/src/library/scala/annotation/serializable.scala @@ -0,0 +1,15 @@ +/* __ *\ +** ________ ___ / / ___ Scala API ** +** / __/ __// _ | / / / _ | (c) 2002-2010, LAMP/EPFL ** +** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ ** +** /____/\___/_/ |_/____/_/ | | ** +** |/ ** +\* */ + +package scala.annotation + +/** + * An annotation that designates the class to which it is applied as serializable + */ +@deprecated("instead of `@serializable class C`, use `class C extends Serializable`") +class serializable extends StaticAnnotation |