[scala-tools] Getting the plugin running in Eclipse PDE

[Jeppe Nejsum Madsen]

Hi,

I'm trying to run the Scala plugin (2.7.5) in the Eclipse PDE (to hack some
JUnit stuff :-), but can't seem to get it to run correctly

Reading http://lampsvn.epfl.ch/trac/scala/wiki/EclipsePlugin it seem it
shouldn't be necessary to create a config.ini for Eclipse 3.5?

I've imported great many plugins to my workspace (jdt, scala, etc) and
I don't get any errors on launch of the PDE workbench.

But compiling a Scala project in the launched workbench fails. It
reports lots of Java problems on Scala source files? Only the scala
builder is enabled for the project.

JDT weaving seems disabled, and enabling doesn't do anything. My guess
is this might be causing some problems?

Any hints?

/Jeppe

[Naftoli Gugenheim]

Yes, it needs to be enabled. Is the eclipse folder writeable?

-------------------------------------
Jeppe Nejsum Madsen<jeppe@...> wrote:

Hi,

I'm trying to run the Scala plugin (2.7.5) in the Eclipse PDE (to hack some
JUnit stuff :-), but can't seem to get it to run correctly

Reading http://lampsvn.epfl.ch/trac/scala/wiki/EclipsePlugin it seem it
shouldn't be necessary to create a config.ini for Eclipse 3.5?

I've imported great many plugins to my workspace (jdt, scala, etc) and
I don't get any errors on launch of the PDE workbench.

But compiling a Scala project in the launched workbench fails. It
reports lots of Java problems on Scala source files? Only the scala
builder is enabled for the project.

JDT weaving seems disabled, and enabling doesn't do anything. My guess
is this might be causing some problems?

Any hints?

/Jeppe

[Jeppe Nejsum Madsen]

Sorry, should have sent to the list :-)


---------- Forwarded message ----------
From: Jeppe Nejsum Madsen <jeppe@...>
Date: Wed, Jul 8, 2009 at 4:44 PM
Subject: Re: [scala-tools] Getting the plugin running in Eclipse PDE
To: Naftoli Gugenhem <naftoligug@...>


On Wed, Jul 8, 2009 at 4:22 PM, Naftoli Gugenhem<naftoligug@...> wrote:
> Yes, it needs to be enabled. Is the eclipse folder writeable?

Depends on what you mean be the Eclipse folder? I'm not sure if I
expressed this clearly, but I'm trying to run the Scala plugin hosted
in an Eclipse Plugin Development Environment (PDE) workbench, i.e.
being able to debug, modify etc. the Scala plugin (and other Eclipse
plugins).

So in this case the eclipse folder (i think, I haven't done PDE
development since Eclipse 2 :-) is somewhere within my workspace which
should definitely be writable.

I wonder if enabling JDT Weaving is stored in config.ini. It seems the
PDE creates a new one on each launch, which is why the Wiki page said
to change it but at the same time writes that this shouldn't be
necessary for 3.5??

/Jeppe

[Miles Sabin]

On Wed, Jul 8, 2009 at 3:02 PM, Jeppe Nejsum Madsen<jeppe@...> wrote:
> I'm trying to run the Scala plugin (2.7.5) in the Eclipse PDE (to hack some
> JUnit stuff :-), but can't seem to get it to run correctly
>
> Reading http://lampsvn.epfl.ch/trac/scala/wiki/EclipsePlugin it seem it
> shouldn't be necessary to create a config.ini for Eclipse 3.5?

Nb. the following is *only* relevant to people who want to help out
with developement of the Scala IDE for Eclipse, not to people who just
want to use it.

For the development time workspace (ie. the outer, hosting one) that's
true. Unfortunately you do still need a config.ini for the runtime
workspace (ie. the inner, hosted one). The section "Creating a
config.ini file" here,

  http://lampsvn.epfl.ch/trac/scala/wiki/EclipsePlugin

should get you going.

Great to hear that you want to work on JUnit integration! If you can
cope with the pain of the current state of trunk, I'd very much
appreciate it if you worked there rather than on the 2.7.x branch ...
it'll make it a lot easier to integrate anything you can contribute to
the next release.

Cheers,


Miles

--
Miles Sabin
tel: [phone]
skype:  milessabin
http://www.chuusai.com/
http://twitter.com/milessabin

[Jeppe Nejsum Madsen]

On Wed, Jul 8, 2009 at 6:15 PM, Miles Sabin<miles@...> wrote:

> On Wed, Jul 8, 2009 at 3:02 PM, Jeppe Nejsum Madsen<jeppe@...> wrote:
>> I'm trying to run the Scala plugin (2.7.5) in the Eclipse PDE (to hack some
>> JUnit stuff :-), but can't seem to get it to run correctly
>>
>> Reading http://lampsvn.epfl.ch/trac/scala/wiki/EclipsePlugin it seem it
>> shouldn't be necessary to create a config.ini for Eclipse 3.5?
>
> Nb. the following is *only* relevant to people who want to help out
> with developement of the Scala IDE for Eclipse, not to people who just
> want to use it.
>
> For the development time workspace (ie. the outer, hosting one) that's
> true. Unfortunately you do still need a config.ini for the runtime
> workspace (ie. the inner, hosted one). The section "Creating a
> config.ini file" here,
>
>  http://lampsvn.epfl.ch/trac/scala/wiki/EclipsePlugin

That worked (my config.ini already contained a
osgi.framework.extensions, which I commented out)

> Great to hear that you want to work on JUnit integration! If you can
> cope with the pain of the current state of trunk, I'd very much
> appreciate it if you worked there rather than on the 2.7.x branch ...
> it'll make it a lot easier to integrate anything you can contribute to
> the next release.

I'll see what I can do, but don't get your hopes up just yet :-) One
showstopper for using trunk is that afaik, Lift doesn't currently work
with 2.8, which means I will not be running trunk on a regular basis

/Jeppe

[Jeppe Nejsum Madsen]

On Wed, Jul 8, 2009 at 6:15 PM, Miles Sabin<miles@...> wrote:

> Great to hear that you want to work on JUnit integration! If you can
> cope with the pain of the current state of trunk, I'd very much
> appreciate it if you worked there rather than on the 2.7.x branch ...
> it'll make it a lot easier to integrate anything you can contribute to
> the next release.

Don't know if this is the right place for discussing plugin development, but:

Just for fun I tried running with trunk but since neither Lift nor
specs seem to run with 2.8 this seems like a dead end for now (for  me
at least). Real pita that scala is not binary compatible between
versions.

The issue I was trying to solve was the inability of the Eclipse JUnit
runner to launch specs test cases without weird workarounds. A brief
debugging session (with 2.7.5) showed that with a declaration like

class UserUnitTest extends JUnit4(UserSpec)

It seems like Eclipse is unable to find the superclass of UserUnitTest
and therefore figure out that JUnit4 has the RunWith annotation. I
haven't digged deep into the Scala plugin, but was wondering if this
is some bigger piece that's missing or just i mishap in this specific
case?

/Jeppe

[Miles Sabin]

On Wed, Jul 8, 2009 at 10:36 PM, Jeppe Nejsum Madsen<jeppe@...> wrote:

> The issue I was trying to solve was the inability of the Eclipse JUnit
> runner to launch specs test cases without weird workarounds. A brief
> debugging session (with 2.7.5) showed that with a declaration like
>
> class UserUnitTest extends JUnit4(UserSpec)
>
> It seems like Eclipse is unable to find the superclass of UserUnitTest
> and therefore figure out that JUnit4 has the RunWith annotation. I
> haven't digged deep into the Scala plugin, but was wondering if this
> is some bigger piece that's missing or just i mishap in this specific
> case?

This sounds like quite a plausible diagnosis ... the IDE isn't
constructing the corresponding JDT type hierarchy completely/correctly
at the moment, and very likely that's frustrating searches which
depend on the type hierarchy.

Patches (against trunk if at all possible) which address that would be
very much appreciated, but failing that, a ticket on Trac so that this
doesn't get forgotten would help too.

Cheers,


Miles

--
Miles Sabin
tel: [phone]
skype:  milessabin
http://www.chuusai.com/
http://twitter.com/milessabin

[Naftoli Gugenheim]

If the reason you are hesitant to work with 2.8 is because you use 2.7.x with lift, I would point out that the 2.7.x plugin was designed for eclipse 3.4, while 2.8 is for 3.5, so it would anyway be a separate eclipse instance.
P.S. Does anyone have 2.7.5 working well in eclipse 3.5?


-------------------------------------
Miles Sabin<miles@...> wrote:

On Wed, Jul 8, 2009 at 10:36 PM, Jeppe Nejsum Madsen<jeppe@...> wrote:

> The issue I was trying to solve was the inability of the Eclipse JUnit
> runner to launch specs test cases without weird workarounds. A brief
> debugging session (with 2.7.5) showed that with a declaration like
>
> class UserUnitTest extends JUnit4(UserSpec)
>
> It seems like Eclipse is unable to find the superclass of UserUnitTest
> and therefore figure out that JUnit4 has the RunWith annotation. I
> haven't digged deep into the Scala plugin, but was wondering if this
> is some bigger piece that's missing or just i mishap in this specific
> case?

This sounds like quite a plausible diagnosis ... the IDE isn't
constructing the corresponding JDT type hierarchy completely/correctly
at the moment, and very likely that's frustrating searches which
depend on the type hierarchy.

Patches (against trunk if at all possible) which address that would be
very much appreciated, but failing that, a ticket on Trac so that this
doesn't get forgotten would help too.

Cheers,


Miles

--
Miles Sabin
tel: [phone]
skype:  milessabin
http://www.chuusai.com/
http://twitter.com/milessabin

[Miles Sabin]

On Thu, Jul 9, 2009 at 4:18 PM, Naftoli Gugenhem<naftoligug@...> wrote:
> P.S. Does anyone have 2.7.5 working well in eclipse 3.5?

It works just fine. I'd recommend 3.5 over 3.4.2 as it happens.

Cheers,


Miles

--
Miles Sabin
tel: [phone]
skype:  milessabin
http://www.chuusai.com/
http://twitter.com/milessabin

[Naftoli Gugenheim]

Hmm. I didn't seem to work for me but I'll try again. Thank for the info.

-------------------------------------
Miles Sabin<miles@...> wrote:

On Thu, Jul 9, 2009 at 4:18 PM, Naftoli Gugenhem<naftoligug@...> wrote:
> P.S. Does anyone have 2.7.5 working well in eclipse 3.5?

It works just fine. I'd recommend 3.5 over 3.4.2 as it happens.

Cheers,


Miles

--
Miles Sabin
tel: [phone]
skype:  milessabin
http://www.chuusai.com/
http://twitter.com/milessabin

[Jeppe Nejsum Madsen]

Arrgh again missed the list.

To list owner: Could the Reply-To please be set to the list??

/Jeppe


---------- Forwarded message ----------
From: Jeppe Nejsum Madsen <jeppe@...>
Date: Thu, Jul 9, 2009 at 5:30 PM
Subject: Re: [scala-tools] Getting the plugin running in Eclipse PDE
To: Naftoli Gugenhem <naftoligug@...>


On Thu, Jul 9, 2009 at 5:18 PM, Naftoli Gugenhem<naftoligug@...> wrote:
> If the reason you are hesitant to work with 2.8 is because you use 2.7.x with lift, I would point out that the 2.7.x plugin was designed for eclipse 3.4, while 2.8 is for 3.5, so it would anyway be a separate eclipse instance.
> P.S. Does anyone have 2.7.5 working well in eclipse 3.5?

Yes :-) Works fine

Eclipse is (in general) pretty good at maintaining backwards
compatibility for plugins

/Jeppe

[Antonio Cunei]

Jeppe Nejsum Madsen wrote:
> Arrgh again missed the list.
>
> To list owner: Could the Reply-To please be set to the list??
>
> /Jeppe
>

This is a recurring request. Last time I asked to our sysadmin, this was
the response:

Fabien Salvi wrote:

> I don't agree :)
>
> There was already a thread on the scala mailing list some time ago about
> that :
> http://osdir.com/ml/lang.scala.user/2008-01/msg00136.html
> After discussions with Martin, we decided to let the setting like it is
> now because only half people were in favor of a reply-to-list...
>
> In my opinion, a reply-to-list is not a good solution, because it makes
> difficult to reply only to the sender. Eg: with my Thunderbird (I don't
> know about others email clients), when the list is configured with
> reply-to-list (eg LAMP list), a "Reply" or "Reply-All" only gives the
> mailing list address, not the sender address. If I want to reply only to
> the sender, I have to copy and paste his email, which is quite annoying...
> Anyway, it's not up to me to decide about that, but I think you should
> see with Martin and others because it was already discussed before.