On Feb 1, 2006, at 3:12 AM, Thierry FLORAC wrote:
Hi !
I'm actually trying to create a Zope3 application, where I may be
able to make queries :
- looking for content in the whole site
- looking for content in a given "sub-site" or list of "sub-sites",
eventually including all it's "sub-folders".
With Zope2, I was commonly using a PathIndex (mixed with other Text
of Field indexes), but I can't find any reference to this index
type in Zope3...
Is it deprecated ?
What is the best way to handle such queries with Zope3 ?
Thanks for any help,
Thierry
P.S.: are the DateIndex and DateRangeIndex also deprecated ? They
were very useful for me in Zope2...
For code similar in effect to the Zope 2 DateIndex and
DateRangeIndex, look at
http://svn.zope.org/zc.catalog/trunk/src/zc/catalog/index.py?view=auto
The bottom of the file has a DateTimeValueIndex and a
DateTimeSetIndex. There's some discussion on what's going on here.
The DateTimeValueIndex and DateTimeSetIndex are normalized versions
of the value index and set index in the package. The value index,
set index, and normalizing features all have their own .txt document.
http://svn.zope.org/zc.catalog/trunk/src/zc/catalog/valueindex.txt?
view=auto
http://svn.zope.org/zc.catalog/trunk/src/zc/catalog/setindex.txt?
view=auto
http://svn.zope.org/zc.catalog/trunk/src/zc/catalog/
normalizedindex.txt?view=auto
For all of the indexes' features, it needs to be used in an extent
catalog, also in the zc.catalog package.
For a path index, you could just have a set index (also in
http://svn.zope.org/zc.catalog/trunk/src/zc/catalog/index.py?view=auto
) that was configured via an adapter to index the containing paths of
any given object. For instance, if an object were at /foo/bar/baz/
bing, your adapter should return
['/foo', '/foo/bar', '/foo/bar/baz', and '/foo/bar/baz/bing']
Then searches for "Give me everything in '/foo/bar'" will return this
object (as well as any others that are in the path). This approach
would probably also work with the keyword index in standard Zope, but
I haven't looked at that in a while.
Gary
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