Re: Review needed for 7037085 : Add hashCode() to Timestamp to address Findbugs warning
Thank you Eamonn. I fixed the typo in the class description as well so they both reference hashCode Regards Lance On Apr 18, 2011, at 6:34 AM, Eamonn McManus wrote:
OK, in that case you can add me (emcmanus) as a reviewer. I'd just suggest fixing the case of {@code hashcode} in the doc comment. Éamonn
On 15/4/11 9:45 PM, Lance Andersen - Oracle wrote:
Hi Eamonn
The javadocs for Timestamp have always specifically called the following blurb out in the class description. Based on some side discussions, it was best to also copy this blurb to the added hashCode method (you will see the text at the top of Timestamp) for additional clarity.
Regards Lance On Apr 15, 2011, at 3:37 PM, Eamonn McManus wrote:
This isn't wrong, but wouldn't it be simpler to just add or xor the nanos field into the hashcode, rather than explicitly saying that you don't? Éamonn
On 15/4/11 8:54 PM, Lance Andersen - Oracle wrote:
Hi all,
Need a reviewer for the following minor change which adds hasCode() to Timestamp to address a Findbugs warning.
Regards Lance
hg diff diff -r d9248245a88c src/share/classes/java/sql/Timestamp.java --- a/src/share/classes/java/sql/Timestamp.java Wed Apr 13 11:21:36 2011 -0400 +++ b/src/share/classes/java/sql/Timestamp.java Fri Apr 15 14:34:07 2011 -0400 @@ -1,5 +1,5 @@ /* - * Copyright (c) 1996, 2010, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 1996, 2011, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it @@ -515,6 +515,18 @@ } }
+ /** + * {@inheritDoc} + * + * The {@code hashcode} method uses the underlying {@code java.util.Date} + * implementation and therefore does not include nanos in its computation. + * + */ + @Override + public int hashCode() { + return super.hashCode(); + } + static final long serialVersionUID = 2745179027874758501L;
}
Lance Andersen| Principal Member of Technical Staff | +1.781.442.2037 Oracle Java Engineering 1 Network Drive Burlington, MA 01803 Lance.Andersen@oracle.com
<Mail Attachment.gif> Lance Andersen| Principal Member of Technical Staff | +1.781.442.2037 Oracle Java Engineering 1 Network Drive Burlington, MA 01803 Lance.Andersen@oracle.com
Lance Andersen| Principal Member of Technical Staff | +1.781.442.2037 Oracle Java Engineering 1 Network Drive Burlington, MA 01803 Lance.Andersen@oracle.com
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Lance Andersen - Oracle