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Posted to issues@hbase.apache.org by "Andrew Purtell (JIRA)" <ji...@apache.org> on 2014/05/12 02:41:14 UTC
[jira] [Resolved] (HBASE-2597) Use "Builder" pattern instead of
many-argument constructors
[ https://issues.apache.org/jira/browse/HBASE-2597?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andrew Purtell resolved HBASE-2597.
-----------------------------------
Resolution: Won't Fix
Assignee: (was: Todd Lipcon)
Not going to happen. Could reopen if there is active interest (aka a patch soon forthcoming)
> Use "Builder" pattern instead of many-argument constructors
> -----------------------------------------------------------
>
> Key: HBASE-2597
> URL: https://issues.apache.org/jira/browse/HBASE-2597
> Project: HBase
> Issue Type: Improvement
> Components: Client
> Reporter: Todd Lipcon
>
> We've got a lot of objects that have a ton of different constructors with a huge number of parameters. Whenever we add a new parameter, existing callers break, and it's sometimes difficult to keep track of which booleans/nulls correspond to which parameter.
> I'd like to consider moving to the "Builder" pattern in some of these cases. See http://guava-libraries.googlecode.com/svn/trunk/javadoc/com/google/common/collect/MapMaker.html for an example of this pattern in action. Another good example is the builder API generated by protocol buffers (search for "builder" on http://code.google.com/apis/protocolbuffers/docs/javatutorial.html )
> I think this pattern makes code more readable and also allows us to more easily change around the number of arguments in our constructors.
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