Hello all,
Thanks for the replies.
On Fri, 2011-08-12 at 10:34 -0400, Tres Seaver wrote:
> That is the accepted mode. For many applications using pagination,
> the percentage of page views which ever use anything but the first
> batch is pretty tiny. Note as well that zope.catalog returns its
> result as sets of "document IDs", rather than the real objects, so you
> don't pay the cost of pulling the "early" items into the object cache:
> you only need to reify the objects for the "current" batch.
Then I will go with catalog approach. In this regard I need one more
clarification.
Say I have an object with following interface
class IMyObject(Interface):
id = TextLine(title=u'Object ID')
name = TextLine(title=u'Name')
...
and say I have registered the catalog like this
catalog['object_id'] = TextIndex('id', IMyObject)
The 'id' field is same as the key value under which the MyObject is
stored in its parent container. And say if the 'id' field value always
starts with a 'p' so its values are like 'p0001', 'p0002' etc.
So, while searching the catalog I query like this
catalog.apply({'object_id': 'p*'})
I get all the objects from the container as desired :) My problem is
solved, but out of curiosity I am asking this. If I query like this
catalog.apply({'object_id': '*'})
I get the following error
ParseError: Query contains only common words: '*'
So, How do I query a catalog to return all its objects?
I guess I can trust the order of objects returned while querying with
_limit option. Because I will be querying for the same keywords n number
of times with just the changing _limit values. Am I right?
Is there any detailed documentation explaining the query format to be
used while querying the catalog other than the documentation in pypi of
zope.catalog?
Thanks
Regards
--
Joshua Immanuel
HiPro IT Solutions Private Limited
http://hipro.co.in
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