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[off topic] question?
by Tom Deprez 26 Apr '99

26 Apr '99

Hi, Another question to all you Python programmers. To tell you the truth, I never heard about Python before I heard of Zope! I knew of Java. Do, it looks like Python is older then Java... How comes that Python is not so popular like Java (or not so known in Windows environment)? Like Java, Python is multi-platform. It can work on Windows as on Unix as on .... Are there any fundamental differences between Python and Java? I see Python has it's Java module (JPython) also... So, I don't get it... Why is Java so popular, while Python seems to be the same and is born before Java... Can somebody give me a easy explenation? Thanks, Tom.

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Preserving log file with NT ZopeHTTPServer ?
by Paul Browning 26 Apr '99

26 Apr '99

I'm using the standalone Zope server under NT. I've tried DOS-style > and >> re-direction but end up with log file that doesn't grow (or perhaps one that doesn't close properly when the server app exits). Can anyone share with me how to do this successfully? Paul -- The Library, Tyndall Avenue, Univ. of Bristol, Bristol, BS8 1TJ, UK E-mail: paul.browning(a)bris.ac.uk URL: http://www.bris.ac.uk/

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ZMySQLDA install problem
by Milos Prudek 26 Apr '99

26 Apr '99

I cannot install ZMySQLDA. - downloaded ZMySQLDA and put it into /usr/local/zope/python/Products/ (here I have ZGadflyDA, ExternalMethod etc.) - README.txt says "go to ZSolidDA", but there's no such directory; I assume it's a type, so I went to ZMySQLDA/src. - modified Setup.in (directives -I and -L) for my placement of MySQL. - successfuly run make -f Makefile.pre.in boot; make. The file MySQLmodule.so appeared. - typed python, and typed "import MySQL". Got this: Traceback (innermost last): file "<stdin>", line 1, in ? ImportError: File not found - Looked at Zope through browser, went to Control Panel. There is (Broken product ZMySQLDA). 1. Is this the correct way to import modules? 2. Where is MySQLmodule.so to be placed? 3. What steps are neccessary to make ZMySQLDA appear as Installed, not Broken under Zope Control Panel? ------------ Milos Prudek

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Restricting access via IP address?
by Paul Browning 26 Apr '99

26 Apr '99

My thanks to Kent Polk for reminding me where I'd seen the bit in the Manager's Guide which allows you to use Zope's built-in security mechanisms by setting the 'Domain' rules for an acl_users user name (you need to set a dummy user for this purpose). Thanks also to Rob Page who (off list) took time out to show me how to do it "manually". I append Rob's DTML code. Paul -- The Library, Tyndall Avenue, Univ. of Bristol, Bristol, BS8 1TJ, UK E-mail: paul.browning(a)bris.ac.uk URL: http://www.bris.ac.uk/ One of many ways to do this would be to break apart the IP address with something like:   Display the remote address just for fun...    This next statement takes the REMOTE_ADDR variable and breaks it into four tokens using the period as the split character. The result is an array called IP_Address_Octets. This array is then stuffed into the address space of the REQUEST making it available later in this document.    Show what we just did    Now we can compare the four elements to something we're testing for...   <P>Octet 1 and 2 are localhost</P> <P>You can see this</P>

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Delphi & Zope
by Tom Deprez 26 Apr '99

26 Apr '99

Hi, I was surprised to see some words of Delphi on this list... Therefor this question. Who is working with Zope, Python and Delphi? Maybe we can work on a sort of RAD application for Zope? Greetings, Tom.

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Confera Topic and number of messages
by Bill Anderson 26 Apr '99

26 Apr '99

What is the variable/property name for the number of messages in a given topic? Any examples of how to display it would be appreciated :-) __ Bill

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Acquisition confusion: more info
by richard.jones＠fulcrum.com.au 26 Apr '99

26 Apr '99

In a simplified, contrived system, I have DTML Documents 'foo', 'bar' and 'spam'. The entire contents of these files are: foo = '' bar = '' spam = 'This is Spam!' This example works as expected. That is, the document foo contains 'This is Spam!'. Changing foo to be '' results in a KeyError on the name "spam". I get the same results if I use DTML Methods. What do I have to do to get "bar()" to work? Richard

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read-only zope query.
by Anthony Baxter 26 Apr '99

26 Apr '99

For the production system I'm building, I intend to run the zope installations in read-only mode (setting the ZOPE_READ_ONLY env var to do so). Right now, if there's any changes to the bobobase, I have to reload the entire system - it would be nice if the read-only system could be signalled to say 'hey, go look at the .bbb file for additional changes', rather than having to reload everything... I'm also a bit paranoid, so I'm going to have a proxy in front of the zope which will block all attempts at a URL that matches http://.*/manage.*, just in case someone wants to try and be clever. I'm also going to be running up multiple readonly zopes with Apache load-balancing in front of them, just in case one of them blocks on a query to Oracle or (spit!) SQL Server. Anyone played these games before with tips to contribute? Anthony

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Acquisition confusion
by richard.jones＠fulcrum.com.au 26 Apr '99

26 Apr '99

Hi all, I have a system which comprises a folder and three subfolders. They make a DVD catalog system (it's a test application to see how useful Zope is). The folders are dvd/owned, dvd/wanted and dvd/loans. Each folder defines the behavior of the owned, wanted and loans gadfly tables for the dvd system. Up until now I've been pretty happy with defining various sql methods, DTML, etc. to handle those tables. Some acquisition has been used to define methods for all three folders (these are placed in the 'dvd' folder). My problem is that I have now defined a DTML Document called 'line_info' in the 'loans' folder which figures a simple bit of text giving a summary of the availability of a DVD and the number of people waiting to borrow it. It does that by calling an SQL method a few times with different arguments. The SQL method is invoked like this:  This works fine when called as '.../dvd/loans/line_info?dvdid=11' or similar. When invoked from the 'owned' folder to integrate that info into the listing of all DVDs, things break. I embed the line_info with  This breaks because it can't find the SQL method that line_info uses. If I move the SQL method out of 'owned' into 'dvd' it still can't find the SQL method. I thought acquisition would be able to find the SQL method fine. Without the SQL method call, it all works. I even tried changing the SQL method call to "loans.info_wh_sql" with no success - that even broke it for the URL that worked before... Any ideas? Richard -- Richard Jones, developer for the Fulcrum Consulting Group. (03) 9621 2100 http://www.fulcrum.com.au/ http://www.bofh.asn.au/~richard/

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Re: [Zope] OFF-TOPIC: CORBA and application servers
by Tres Seaver 26 Apr '99

26 Apr '99

Paul Everitt <paul(a)digicool.com> wrote: > > Here's an analysis of the OMG's plans for CORBA 3: > > http://www.objectwatch.com/issue19.htm > > Though obviously subjective and impassioned, I agree with most of what > the author says. The OMG has abandoned language-neutrality. > > I was sad to see Richard Soley, whom Jim and I worked with 3 years ago, > try to tie application servers, Java, and the OMG together. At any > rate, CORBA's current level of adaptation is quite low, and now that OMG > has become a marketing organization for Sun, I think it's time to dispel > any notions that CORBA support is critical. > > Just my $0.02. > > --Paul As an active CORBA developer in 3 languages (C++ / Java / Python), and one hard at work on bridging Zope to my CORBA stuff, I have to differ. Sessions' anti-CORBA bias is well-known within CORBA circles: he was lead architect for the Persistent Object CORBA spec, which was roundly rejected by implementers after his team delivered it, late and crippled. He has been actively promoting COM/DCOM ever since, is a frequent presenter at Micros~1 FUDfests, etc. CORBA is not "about" application servers, nor has it abandoned language-neutrality (the C++ mapping is the most widely used, and probabaly will remain so for the next 3-5 years in production systems). We should take pronouncements of ivory tower theorists with a large block of salt; the community is dedicated to the "rough consensus and _working_ code" model of standards development which enabled the Internet protocols total victory over the "sanctioned / blessed" ISO standards. The OMG is hardly a marketing arm for Sun; standards bodies don't work like that. -- ========================================================= Tres Seaver tseaver(a)palladion.com 713-523-6582 Palladion Software http://www.palladion.com

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