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Subject: Re: Build error
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From: Robin Chesterman <robinchesterman@gmail.com>
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Date: Mon, 24 Dec 2012 09:39:08 +0000
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Thanks for shedding some light on this. I tried with NetBeans and had no tro=
uble (once I skipped tests) and then when I opened in subsequently in Intell=
iJ, it worked as well. I guess IJ does struggle with the first build as you d=
escribe. Cheers.


On 24 Dec 2012, at 04:48, Ted Dunning <ted.dunning@gmail.com> wrote:

> I didn't mean to give the impression that IntelliJ doesn't work.  It does.=

>=20
> The issue is that it doesn't understand the custom source generation plugi=
n
> that Mahout math uses.  That means that you have to do the first build
> using maven.  =46rom there, you should be good.  You may need to regenerat=
e
> code if you change the templates (very, very rare).
>=20
> On Sun, Dec 23, 2012 at 7:41 PM, Marty Kube <
> martykube@beavercreekconsulting.com> wrote:
>=20
>> I've been using eclipse for many years and gave up using it on pom based
>> projects for the same issues you raise.  IMHO NetBeans works really well
>> for maven projects.
>>=20
>> On 12/23/2012 04:42 PM, Ted Dunning wrote:
>>=20
>>> To amplify others comments, make sure that when you open the Mahout
>>> project, you actually just open the pom.xml file at the top-level.  It i=
s
>>> a
>>> bad idea to try to do anything like import existing sources because a
>>> significant amount of the code is generate which would make a naively
>>> configured. compilation break.
>>>=20
>>> IntelliJ is smart enough to treat a pom as a project and will mostly do
>>> the
>>> right thing.  One thing that it tends not to do is to actually generate
>>> the
>>> code in the math library.  I would recommend doing one build using maven=

>>> before depending completely on IntelliJ's internal build.  Using
>>> -DskipTests can save a lot of time on that build.
>>>=20
>>> On Sun, Dec 23, 2012 at 4:30 AM, Robin Chesterman <
>>> robinchesterman@gmail.com
>>>=20
>>>> wrote:
>>>> Hi everyone, I'm just starting out with Mahout - just bought Mahout in
>>>> Action!
>>>>=20
>>>> I'm using IntelliJ idea and got the latest Mahout from git, but it come=
s
>>>> up
>>>> with about a hundred or so errors when I build the project (exclusively=

>>>> in
>>>> the 'math' section), such as:
>>>>=20
>>>> import org.apache.mahout.math.set.**OpenIntHashSet;
>>>>=20
>>>> "Cannot resolve symbol OpenIntHashSet"
>>>>=20
>>>> Similar problems exist for DoubleArrayList, DoubleDoubleProcedure, and
>>>> others.
>>>>=20
>>>>=20
>>>> Sure enough, none of these classes exist. I must be making a basic
>>>> error...
>>>>=20
>>>>=20
>>>> Thanks,
>>>>=20
>>>>=20
>>>> Robin
>>>>=20
>>>>=20
>>=20