[Zope3-dev] getUtilitiesFor() fools me

[Andreas Jung]

Martijn Faasen helped me meanwhile to resolve this issue. The problem was 
that the Python package
was sitting directly in the Products/XXXX directory instead of 
Products/XXXX/src directory..this
caused obviously the confusion of the interface matching machinery.

Andreas

--On Montag, 2. Mai 2005 18:42 Uhr +0200 Dominik Huber 
<dominik.huber at projekt01.ch> wrote:

> Andreas Jung wrote:
>
>>
>> Hi,
>>
>> I restructured the TXNG 3 source so that the core implementation can
>> be used as package (within Zope 2.8/Five)
>> ...so far so good.
>>
>> The configure.zcml under Products/TextIndexNG3 contains several
>> statements of the form:
>>
>>
>>  <utility
>>      provides="textindexng.interfaces.IConverter"
>>      component="textindexng.converters.doc.DocConverter"
>>      name="application/vnd.ms-word"
>>      />
>>
>>
>> Inside a browser view class there is the following method:
>>
>>    def get_converters(self):
>>        """ return all available converters """
>>
>>        from zope.app import zapi
>>        from textindexng.interfaces import IConverter
>>        print [x for x in zapi.getUtilitiesFor(IConverter)]
>>        return zapi.getUtilitiesFor(IConverter)
>>
>>
>>
>>
>> But the getUtilitiesFor() call always returns nothing. In my case
>> textindexng/interfaces contains several files with interfaces and all
>> interfaces are aliased in interfaces/__init__.py. The "textindexng"
>> package itself lives unter Products/TextIndexNG3 and sys.path is
>> extended in Products/TextIndexNG3/__init__.py to be able to import
>> the "textindexng" package without the need to use "Products.TextIndexNG3"
>> in imports....so any ideas why the utility machinery refuses to
>> return the registered utilities for the given interface? A
>>
> Did you include the configure.zcml by a file (for example
> textindexng-configure.zcml) within zope3/package-includes folder?
>
> content of textindexng-configure.zcml
> <include package="textindexng"/>
>
> Regards,
> Dominik Huber



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