Ok, so you have statically defined classes which you want to dynamically
look up and instantiate, right.
I would expect you have several of them, but your config entry,
"include" :
[
"gertyreports.HDSL2_SHDSL_LINE_MIB"
]
gives only a plain identifier. Is HDSL2_SHDSL_LINE_MIB a class name? Or
more likely a name space, and the include should be more like
"gertyreports.HDSL2_SHDSL_LINE_MIB.*"
?!
T.
On 03/01/2011 09:01 AM, Stanislav Sinyagin wrote:
> in my case, I know the class name only at the runtime, and not at the
> coding time,
>
> so the method porosed by Adrian is the right one.
>
> Here's what I finally do:
>
> line 59 in
> https://github.com/ssinyagin/gerty-reports/blob/master/frontend/source/class/gertyreports/Application.js
>
>
>
> also config.json needed a bit of a tweak: the build system has to
> know all dynamically added classes: line 49 in
> https://github.com/ssinyagin/gerty-reports/blob/master/frontend/config.json.in
>
>
>
>
>> From: thron7<[email protected]>
>
>> To: qooxdoo Development<[email protected]> Sent:
>> Sun, February 27, 2011 4:07:40 PM Subject: Re: [qooxdoo-devel]
>> creating objects of dynamic types
>>
>>> Hi.
>>>
>>>> Here's a little code to make you an idea about using
>>>> qx.Class.getByName.
>>>>
>>>> qx.Class.define("Bacon", { extend: qx.core.Object, construct:
>>>> function(foo, bar) { this.foo = foo; this.bar = bar; } });
>>>>
>>>> var klass = qx.Class.getByName("Bacon"); var obj = new
>>>> klass("foo", "bar"); this.debug(obj.foo);
>>>
>>> IIRC, you also have to have something like #require("Bacon") or
>>> such in the file where you want to instantiate Bacon objects, if
>>> you only instantiate Bacon objects by name. Otherwise the build
>>> process won't know to include the Bacon class in the generated
>>> script.
>>
>> It really depends. What you address is the case where you have a
>> normal qooxdoo class (i.e. a class statically defined in its own
>> file within a library), and then you use the qx.Class.getByName()
>> call in some arbitrary other class. Then, yes, using a #require
>> hint is one of the means to ensure the Bacon class will actually
>> be included in the build, and is available at run time.
>>
>> But the code example seems to indicate a different situation. As
>> the call to qx.Class.define() is just a normal function call, you
>> can use it basically anywhere in the code to create classes on the
>> fly. Not the recommended way to do that, but sometimes handy (The
>> framework unit test code uses this a lot, see e.g.
>> qx.test.core.Variants). But classes created on the fly this way are
>> not known to the generator (there is no deep inspection for calls
>> to qx.Class.define and the like), so it's also no use to mention
>> them in a #require hint (the generator wouldn't recognize them
>> there either).
>>
>> One more thing: After the call returns, you know the class you
>> passed as argument is available for normal use, so you don't even
>> have to resort to qx.Class.getByName(), you can use the class name
>> directly:
>>
>> qx.Class.define("Bacon", ...);
>>
>> var bacon = new Bacon("foo", "bar");
>>
>> So .getByName() is really only necessary if you cannot write down
>> the name of the class at coding time, but is a dynamic value at
>> run time.
>>
>> T.
>>
>>
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