Hi Jörg, thanks for your quick response and your approach to solve this issue. But anyway I think it should be possible to add these Enums to a Set without throwing a ClassCastException regardless of which class, anonymous inner class or whatever else the Enum is.
Samuel -----Original Message----- From: Jörg Schaible [mailto:[EMAIL PROTECTED] Sent: Thursday, September 13, 2007 4:06 PM To: Jakarta Commons Users List Subject: RE: [lang] ClassCastException in Enum.compareTo with anonymous inner classes Hi Samuel, Samuel Fleischle wrote on Thursday, September 13, 2007 3:51 PM: > Hi, > I updated from Commons Lang 2.1 to Commons Lang 2.3 and got > some issues with the changed compareTo() method of Enum with > anonymouse inner classes: > > Here is my simplified Enum: > > > public class ItemStatus extends Enum > { > // -------------------------------------------------- > Static Fields > public static final ItemStatus CANCEL = new > ItemStatus("CANCEL", "Cancel"); > > public static final ItemStatus SHIPPED = new > ItemStatus("SHIPPED", "Shipped") { > public String getDisplayName() { > // do something special for this status > } > }; > > public static final ItemStatus MOVED = new > ItemStatus("MOVED", "Moved") { > public String getDisplayName() { > // do something special for this status > } > }; > [snip] > } [snip] > com.myapp.common.model.order.ItemStatus > com.myapp.common.model.order.ItemStatus$1 > com.myapp.common.model.order.ItemStatus$2 > > The compareTo-Method now tries to compare ItemStatus$1 with > ItemStatus$2 and says to me, that my ItemStatus-Enums are > different classes. Well, obviously those *are* different classes. > I saw in JIRA there are some other issues in > ValuedEnum.compareTo(). Is there a bug in the > Enum.compareTo() implementation which got changed in Lang 2.2? IIRC, this was more about using different class loaders loading the EnumValue class. > Thanks in advance for any help or comment on this issue. Why don't you factor out a (private) interface with this method? Write an addition ctor that takes such an implementation and use otherwise a default one. With this approach the enum class is always the same and the anonymous class is of a different type. Make the an additional field in the enum class keeping that implementation and declare it as transient for seamless serialization. - Jörg --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]