Agreed - merely importing this class shouldn't be an issue (which is the
issue at hand).
If you need to configure Spacing, you should do that prior to using it in
your def, but that should work fine. If that needs to happen at runtime,
then you shouldn't do this in a def.
On Wednesday, October 23, 2013 9:01:15 AM UTC-5, Aaron Cohen wrote:
>
> I'm not sure if this is related to the original problem.
>
> How is the setFactory method expected to be invoked, through some sort of
> dependency injection framework?
>
>
> On Wed, Oct 23, 2013 at 7:06 AM, Colin Fleming
> <colin.ma...@gmail.com<javascript:>
> > wrote:
>
>> I've also had a lot of problems with def'ed forms. For example, if I do
>> this:
>>
>> (def no-spacing (Spacing/createSpacing 0 0 0 false 0))
>>
>> Which looks like this:
>>
>> public static Spacing createSpacing(int minSpaces,
>> int maxSpaces,
>> int minLineFeeds,
>> boolean keepLineBreaks,
>> int keepBlankLines) {
>> return myFactory.createSpacing(minSpaces, maxSpaces, minLineFeeds,
>> keepLineBreaks, keepBlankLines);
>> }
>>
>> myFactory is injected at some earlier point:
>>
>> static void setFactory(SpacingFactory factory) {
>> myFactory = factory;
>> }
>>
>> But during compilation that obviously hasn't happened and I get an NPE
>> during compilation. It's a little annoying that there really seems to be no
>> good way to create this value at namespace load time if I'm AOT compiling.
>> I can obviously defer it using defn with memoize or something, but that
>> seems clunky for what doesn't seem like that crazy a use case.
>>
>>
>> On 23 October 2013 15:21, Zach Oakes <zso...@gmail.com <javascript:>>wrote:
>>
>>> Here's the error I get when I import LibGDX's Timer class:
>>>
>>> http://pastebin.com/q7wys8yi
>>>
>>>
>>> On Tuesday, October 22, 2013 9:55:16 PM UTC-4, Alex Miller wrote:
>>>>
>>>> I'd love to see a stack trace when that happens (could even be
>>>> triggered by dumping stack in your static initializer if nothing else).
>>>>
>>>> On Saturday, October 12, 2013 3:17:50 AM UTC-5, Wujek Srujek wrote:
>>>>>
>>>>> So you are saying compilation is trying to instantiate class and run
>>>>> static initializers? This seems very backward, are you sure?
>>>>>
>>>>>
>>>>> On Sat, Oct 12, 2013 at 8:30 AM, Zach Oakes <zso...@gmail.com> wrote:
>>>>>
>>>>>> I should add, I am aware I can bring in a class dynamically with
>>>>>> Class/forName, and that is what I ended up doing for the Timer class.
>>>>>> However, this is not always practical, and sometimes is simply not an
>>>>>> option if aot-compilation is required.
>>>>>>
>>>>>>
>>>>>> On Saturday, October 12, 2013 2:28:38 AM UTC-4, Zach Oakes wrote:
>>>>>>>
>>>>>>> I recently learned that merely importing a Java class in Clojure
>>>>>>> causes static initializers to be run. Sometimes, this causes
>>>>>>> compilation
>>>>>>> errors, because they are written with the assumption that they will
>>>>>>> only be
>>>>>>> run during runtime.
>>>>>>>
>>>>>>> I ran into this just now while trying to make a simple Clojure game
>>>>>>> with LibGDX. After simply importing its Timer class, I began getting
>>>>>>> compilation errors. The stack trace shows it is due to a static
>>>>>>> initializer<https://github.com/libgdx/libgdx/blob/511b557c1a2d23bf8110a05b0ef54cc20b7f958d/gdx/src/com/badlogic/gdx/utils/Timer.java#L32>attempting
>>>>>>> to instantiate the class!
>>>>>>>
>>>>>>> I also ran into this recently while trying to use RoboVM. My
>>>>>>> question is, do I have any options? I haven't found many discussions
>>>>>>> about
>>>>>>> this here or elsewhere. This surprises me, because it seems like
>>>>>>> something
>>>>>>> more people should be running into.
>>>>>>>
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