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https://issues.apache.org/jira/browse/CLEREZZA-727?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Reto Bachmann-Gmür resolved CLEREZZA-727.
-----------------------------------------
Resolution: Fixed
Assignee: Reto Bachmann-Gmür
Fixed definition and implementation. This should make clerezz faster! Thanks
for reporting!
> Error in hashCode implementation in
> org.apache.clerezza.rdf.core.impl.TripleImpl
> --------------------------------------------------------------------------------
>
> Key: CLEREZZA-727
> URL: https://issues.apache.org/jira/browse/CLEREZZA-727
> Project: Clerezza
> Issue Type: Bug
> Components: rdf.core
> Reporter: Giuseppe Miscione
> Assignee: Reto Bachmann-Gmür
> Priority: Minor
> Labels: performance
>
> hashCode of --- class is implemented as
> public int hashCode() {
> return (subject.hashCode() >> 1) ^ subject.hashCode() ^
> (subject.hashCode() << 1);
> }
> and it's using only the subject part of the triple. It's correct
> implementation should be:
> public int hashCode() {
> return (subject.hashCode() >> 1) ^ predicate.hashCode() ^
> (object.hashCode() << 1);
> }
> The actual implementation works well with its corresponding equals method
> (the methods are coherent) but it can yield to performance degradation when
> using a lot of TripleImpl objects with the same subject as HashMap key.
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