October 1999 - Zope - Zope lists

Re: Ultraseek Content Classification Engine
by Michel Pelletier 01 Oct '99

01 Oct '99

(I cc:ed the Zope list on this because there is some good information for the community) Jon Udell wrote: > > This is a nifty concept: you set up rules that map search results into a > Yahoo-like category tree. You can create these rules interactively or, > since it's all expressed in XML, you could in principle derive a ruleset > by some other means and then have Ultraseek CCE use it. This can be done rather nicely with a general purpose object index. Given objects (like documents) with various properties, you can desegnate a property 'keywords' that defines the set of nodes in a catagory hierarchy the object fits into. I envision you could do this two way, as a set of singleton nodes (so that multiple 'paths' from the heirarchy root are expressed can be expressed in one keyword, caveat you can't 'suppress' paths) or as a set of fully delimted paths or 'ordered keywords'. > > Here's the example that Ultraseek's site refers to: > <http://search.state.mn.us/>. > > Has anyone used Ultraseek with its CCE? Or a similar system (e.g. Verity > Topic) that does rule-based mapping of results onto a category tree? I'd > be curious to hear from someone who's wrestled, using tools like this, > with a fairly large corpus of documents, and can speak to the issues > involved in creating/maintaining the mappings from results space into > category space. I cannot give you examples with the software you mention, but I can give you an example that we are working on with ZCatalog. We are desiging a 'Topic' based system that works as a catagorical hierachy, ala Yahoo. ZCatalog is an object index, somewhat identical to what I describe above. ZCatalog indexes objects into an arbitrary set of various kinds of indexes. Each index is responsible for indexing one particular property of an object. If the an object being indexed does not have a property that an index is looking for, the object is simply not indexed in that index (but it may have a property that another index is looking for, and therefore will be indexed in *that* index). The CVS version of ZCatalog uses three types of index (in 2.0, there are only the first 2): Field Index: property values are treated atomically. Indexes can be queried for all objects that match that value. Range searches can also be done on indexed object values that support comparison (like numbers, dates, special purpose 'length' objects, etc). indexes can also be queired for the set of unique values in the index, for example, you can ask for the set of unique 'meta_types' of all objects indexed. A good example of this is the search by 'type' on the Zope site (http://www.zope.org/SiteIndex/searchForm) Text Index: property values are applied against a lexicon object that stems, stops, and parses the value into a full text index. The index may be queried with a simple boolean query language that allows 'and' 'or', phrasing, parenthesized boolean expressions, and proximity matching. Relevance ranking is supported and returns the sum of the occurances of all query terms in the 'hit'. A normalized score is also provided that is normalized from 0 to 100 over the whole result set. Keyword Index: Subclasses all of the field index behavior, except that property values are treated as a sequence of keywords. The ZCatalog can work in a UNIX 'find' like fasion, where it spiders over the object hierarchy indexing objects, or Zope classes may subclass behavior that makes them Catalog Aware, allowing them to index/unindex themselves when their state changes. The new Zope site is driven by ZCatalog. All of the product listings, member contributions, news items, links, tips, documentation, how-tos, etc... are all catalog aware objects that index themselves. As new content is added anywhere in the site, all of the various dynamicaly generated information is updated. Some user have the propery access credentials to review or immediatly submit new content, other users must submit content for review before it is cataloged. On the bottom of every screen, there is a 'DTML Source' link that shows you the DTML that generated that page. There, you can see the various clever ways that the Catalog is used throughout the site. -Michel > > -- > Jon Udell | <http://udell.roninhouse.com/> | 603-355-8980

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Re: [Zope] Naming files with a dot
by Kevin Dangoor 01 Oct '99

01 Oct '99

Hi, The default view for an object is called "index_html". So, if you go to "yoursite.com/Folder", Zope will serve up "Folder/index_html". If you name it "index.html", Zope won't find it. Other than that, "." is not legal in python expressions, so you may find yourself having to use "_['index.html']" sometimes if you are trying to call it from other objects. Beyond those two things, there is no real problem. I've used "index.html" or "foo.gif" in a number of cases myself... Kevin -----Original Message----- From: James Punteney <jamesp(a)mmgco.com> To: zope(a)zope.org <zope(a)zope.org> Date: Friday, October 01, 1999 1:46 PM Subject: [Zope] Naming files with a dot >Is there a problem with naming a page using a period instead of the under >score as in "index.html" instead of "index_html". I'm just thinking for >somebody typing in the url the dot is the normal way and provides one less >thing to remember. This would only be for the DTML Documents? Not the >DTML Methods or anything else, and probably even just the end documents (in >other words not the headers and footers).

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Problem with ZODBCDA-3.1.0b2
by Hunter Kelly 01 Oct '99

01 Oct '99

I can't seem to establish an ODBC connection to any of my ODBC sources. The "Add Z ODBC Database Connection" page seems to come up fine, and lists all my odbc sources, but I have no joy when trying to create a connection with the "Connect immediately" button checked. I tried all of the connections, some of which are SQL server and some are Access thingies, but none of them work. I've included the source of the page with the error message. Any thoughts? Thanks, Hunter <HTML><HEAD><TITLE>Zope</TITLE></HEAD><BODY BGCOLOR="#FFFFFF"> Invalid connection string: <CODE>Demander</CODE>  <a href="http://www.zope.org/Credits"><img src="http://opal:8080/p_/ZopeButton" width="115" height="50" border="0" alt="Powered by Zope"></a> </BODY></HTML>

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Zen of adding objects through forms
by Dave Walker 01 Oct '99

01 Oct '99

YANQ Okay, I'm wanting to add articles, quotes, etc to my system through an admin form interface. For instance, under the main folder, I have a folder called quotes. I want to generate a unique folder with a single index_html and a property called author. Then, I want a document that will allow me, with DTML, to add this folder, create index_html and insert into this file, the quote, already formatted. So, for a Zope newbie with lots of HTML experience, but little/no forms experience, what would be the best way to start? I've searched around for this, but searching the zope site for "forms" or "form" has proven to be a less than helpful activity. Dave, who will soon be trying to figure out how to increment the integer property "count" by one

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RE: [Zope] PATH_INFO und regex
by Michel Pelletier 01 Oct '99

01 Oct '99

> -----Original Message----- > From: Sven Kirmess [mailto:sven.kirmess@gmx.net] > Sent: Friday, October 01, 1999 12:02 PM > To: zope(a)zope.org > Subject: [Zope] PATH_INFO und regex > > > The PATH_INFO is > > /kirmess/ > > or > > /kirmess/index_html > > depending on how you call the document. I'd like to have it always > without the document name. How can I cut everything behind the last / > in a string? You can do string manipulations with the _.string module in DTML. It is documented in the DTML Guide -Michel

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RE: [Zope] Can I create 'callbacks' for HTTP server errors..
by Michel Pelletier 01 Oct '99

01 Oct '99

> -----Original Message----- > From: Tony McDonald [mailto:tony.mcdonald@ncl.ac.uk] > Sent: Friday, October 01, 1999 9:54 AM > To: Zope List > Subject: [Zope] Can I create 'callbacks' for HTTP server errors.. > > > HI all, > I was wondering if there's a way of getting Zope to do something > other than return a 'Zope Error' when a 404 or 500 error occurs (or > indeed any other error I want to trap). I'm running with Apache as > the front-end handing off to a PCGI/ZServer combo... > > Do I need to get some gloves on and delve into medusa, or can I do is > simplisticly with DTML? standard_html_error is called when a 404 or 500 is raised, just put your DTML in there. Make sure that your DTML is wrapped with <dtml-try>s, because if your standard_html_error causes an error, you could be in trouble. -Michel

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RE: [Zope] Structure of website How?
by Michel Pelletier 01 Oct '99

01 Oct '99

> -----Original Message----- > From: Alwyn Schoeman [mailto:alwyns@prism.co.za] > Sent: Friday, October 01, 1999 10:03 AM > To: Michel Pelletier > Cc: zope(a)zope.org > Subject: Re: [Zope] Structure of website How? > > > Can I use acquisition between folders on the same level or is > it mainly > top-down? The beauty of acquisition is that it's transparent. Because objects in the same folder are in the same namespace, acquisition is not needed, you just reference the variable. Because acquisition kicks in when you access namespaces above you, you just reference the variable. It apears towork the same either way, even though one method uses acquisition and one doesn't. Transparency is good. -Michel

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RE: [Zope] Structure of website How?
by Michel Pelletier 01 Oct '99

01 Oct '99

> -----Original Message----- > From: Alwyn Schoeman [mailto:alwyns@prism.co.za] > Sent: Friday, October 01, 1999 8:29 AM > To: zope(a)zope.org > Subject: [Zope] Structure of website How? > > > Hi, > > I've got this idea of a website but being a zopebie I don't > know how to > structure it in zope. > > The site is for a company that supply different internet > services. The > company has several clients. There need to be a general area and then > there must be areas for each client. The client > must log in and then be transported to his site which lists only the > services that the client has subscribed to, client specific news, etc. > All client sites must be similar and only differ on authentication and > services subscribed. Each site must be private from other clients and > it must be possible to differentiate between different users from the > same client. Read the Content Managers Guide. It describes this very scenario. As an example, have a folder called general, in which is a folder for each client: general/ client1/ client2/ > > Any ideas on structuring? > I especially don't know how you can do the authentication > without doing > it in Apache. Use multiple user folders, one for each 'client' directory. The Content Managers guide also has a good section on security. -Michel

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RE: [Zope] IMP in zope?
by Michel Pelletier 01 Oct '99

01 Oct '99

> -----Original Message----- > From: Alwyn Schoeman [mailto:alwyns@prism.co.za] > Sent: Friday, October 01, 1999 7:50 AM > To: zope(a)zope.org > Subject: [Zope] IMP in zope? > > > Hi, > > Imp is written in python yes? So how difficult would it be > to integrate > it into zope? You could give a little more context here eh? By IMP do you mean the web mail system? That is written in PHP with a relational backend. -Michel

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Can I create 'callbacks' for HTTP server errors..
by Tony McDonald 01 Oct '99

01 Oct '99

HI all, I was wondering if there's a way of getting Zope to do something other than return a 'Zope Error' when a 404 or 500 error occurs (or indeed any other error I want to trap). I'm running with Apache as the front-end handing off to a PCGI/ZServer combo... Do I need to get some gloves on and delve into medusa, or can I do is simplisticly with DTML? ta Tone ------ Dr Tony McDonald, FMCC, Networked Learning Environments Project http://nle.ncl.ac.uk/ The Medical School, Newcastle University Tel: +44 191 222 5888 Fingerprint: 3450 876D FA41 B926 D3DD F8C3 F2D0 C3B9 8B38 18A2

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