Hey!I'm trying to understand if my idea of how to use the FilterExtent in zc.catalog (1.1.1) is correct (and efficient). I'm also using hurry.query (0.9.3). My current understanding of extents is: they can be used to perform a search on a subset of a catalog. For example, "give me all objects where attr1 is 'foo' but only for intids 5,6,7 and 10"
Short version: I have an extent of a large catalog. How do I make a search within this extent? Long version: Basically, I have a few content components that can belong to several "networks". My idea is to have an extent in each network. Adding a component to several networks is simply a matter of subscribing to an added event, looking at the object's "networks" attribute and add it to each of the specified networks via the network's extent.add method. >>> list(BigCatalog.refs ) [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12] >>> list(network1.extent.set) [1, 2, 5] >>> list(network2.extent.set) [2, 3, 5, 6, 11] In turn, the members of my site can join these networks so I'd want an extent on each principal too. This is to allow a kind of "subscription" to his networks. Also I'd want some filter capabilities where the user can somehow change settings for the filter function, but I'll leave it for now.. Say, we have a member John, who's member of network1 & 2, his extent would then look like this (assuming he's not filtering anything from the networks): >>> IUserExtent(john).extent.set [1, 2, 3, 5, 6, 11] SO, my main question now is, uhm, how do I actually make a search within a network's extent? I mean, I could do a search on the big catalog and then make a union with the network's extent: >>> some_result & network1.extent [1] ...But was it really meant to be used like this? I see you can set the parent catalog on the extent but I'm still not sure how to use it. Regards Jesper
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