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From Robert Levas <>
Subject Re: [VOTE] add FreeBuilder to Ambari
Date Tue, 06 Mar 2018 16:15:00 GMT

I hate to squash other engineers ideas, but it seems that the advantages this package brings
to the table does not outweigh the disadvantages.  I agree with others that posts to this
thread about requiring an IDE to rely on a third-party tool to generate code.  If something
breaks, we are dead in the water for a while - whether we are waiting for someone to fix the
issue in the tool or whether we need to rewrite code to rip it out.  

Also, what about debugging?  If there is a bug somewhere and it happens to be in or near the
generated code (or the meta-code used to generate the actual code), how easy or hard would
it be to access, read, or walk-through that code. Or what if the code generator had a bug
generating code.  We will either need to wait for a fix in the generator or figure out a work-around.

It just seems to me that there is more work around using this tool then it is to just manually
create the classes. On that note, how many classes are really that simple that we need such
a tool? 


´╗┐On 3/2/18, 11:58 AM, "Doroszlai, Attila" <> wrote:

    Hi all,
    I'd like to start a vote on adding the FreeBuilder library to Ambari.
    FreeBuilder is an annotation processor that generates (at compile
    time) immutable value objects and their builders from interfaces or
    abstract classes annotated with @FreeBuilder.  If you are interested
    in the details, please check the website at  Their concise
    readme has examples and explanations.
    The reason for the vote thread is that a quick, one-time setup is
    needed for IDEs for those working on ambari-server.
     * IDEA: find the directory "ambari-server > target >
    generated-sources > annotations" in the Project pane, right-click it,
    and select Mark Directory as > Generated Sources Root.
     * Eclipse: instructions are at
     * NetBeans: non-FreeBuilder-specific tutorial:
    If the vote passes, I will add setup instructions to the Ambari wiki.
    Please vote:
    [ ] +1, add FreeBuilder to Ambari
    [ ] -1, keep FreeBuilder out of Ambari
    Thanks for your time.

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