Thanks for the link, Notice however that I'm not using the map as a key in itself, but as a value in itself, and as a key in another unrelated map.
On Jan 3, 11:36 am, Thomas Broyer <t.bro...@gmail.com> wrote: > Have you seen this note in the javadoc for java.lang.Map: > > Note: great care must be exercised if mutable objects are used as map keys. > The behavior of a map is not specified if the value of an object is changed > in a manner that affects equals comparisons while the object is a key in the > map. A special case of this prohibition is that it is not permissible for a > map to contain itself as a key. While it is permissible for a map to contain > itself as a value, extreme caution is advised: the equals and hashCode > methods are no longer well defined on such a map. > > –http://download.oracle.com/javase/6/docs/api/java/util/Map.html > > Instead of using a Map directly, maybe you should use an wrapper object that > implements equals() and hashCode() independently of the content of the Map. > Or, instead of using the Map itself as the key, use a "sentinel" object > (e.g. public static final Object THIS_MAP = new Object(); ) > > (that being said, I'm having a hard time figuring out what could represent a > Map that contains itself as a *key*) -- http://groups.google.com/group/Google-Web-Toolkit-Contributors
