RFR: 1542: Census Namespace missing hashCode and equals

[Joe Darcy]

On Thu, 11 Aug 2022 20:40:10 GMT, Erik Joelsson <erikj at openjdk.org> wrote:

> The Namespace class is missing hashCode and equals. This patch adds implementations for those two methods. The other data classes in the Census module already have them. 
> 
> This is preventing the change in [SKARA-1529](https://bugs.openjdk.org/browse/SKARA-1529) from actually taking effect, as we can't compare two instances of Namespace to see if they have the same contents.

Marked as reviewed by darcy (Reviewer).

census/src/main/java/org/openjdk/skara/census/Namespace.java line 100:

> 98:             return true;
> 99:         }
> 100:         if (o == null || getClass() != o.getClass()) {

The "same type" check could be phrased differently using instanceof, but what you have here should work okay too.

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PR: https://git.openjdk.org/skara/pull/1356