Issue with MultiKey when serialized/deserialized via RMI
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Key: COLLECTIONS-266
URL: https://issues.apache.org/jira/browse/COLLECTIONS-266
Project: Commons Collections
Issue Type: Bug
Components: KeyValue
Affects Versions: 3.2
Reporter: Julien Buret
Priority: Minor
This is because the hash code of MultiKey is calculated only once.
So if the MultiKey is deserialized in an other jvm, and if one at least of the
subkeys defines its hash code with System.identityHashCode() (for example all
the enums does), then the hash code of the MultiKey is no longer valid, and you
can't retreive the key in your Map.
I fixed it by making the cached hash code field transient, and by recalculating
the hash code during deserialization.
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