http://blog.gmane.org/gmane.comp.db.metakit hourly 1 1901-01-01T00:00+00:00 http://gmane.org/img/gmane-25t.png http://gmane.org http://permalink.gmane.org/gmane.comp.db.metakit/2340 Hello Sean, My aim is not to break MK compatibility in the 2.4.x series. Versioning might be a good idea to introduce though. Main reason for not doing all that is that at the time I had no idea how to do proper versioning. There was less need then, when MK usually got linked in statically. Even now, it's less of an issue because it is linked in with the Tcl and Python extensions. Thanks for doing this. -jcw --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the "metakit" group. To post to this group, send email to metakit< at >googlegroups.com To unsubscribe from this group, send email to metakit-unsubscribe< at >googlegroups.com For more options, visit this group at http://groups.google.com/group/metakit?hl=en -~----------~----~----~----~------~----~------~--~--- Jean-Claude Wippler 2008-05-11T13:18:27 http://permalink.gmane.org/gmane.comp.db.metakit/2339 I am working on packaging metakit for Debian, and I noticed that there is no SONAME in the default library provided. I was wondering what rules you guys have for ABI compatibility - will you not break ABI compatibiliy, or is the 4 in mk4 the ABI/API version? In other words, is there any easy way to tell when a new release of metakit will break programs that link against it dynamically? (recompilation is not an issue) Sean Hunt --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the "metakit" group. To post to this group, send email to metakit< at >googlegroups.com To unsubscribe from this group, send email to metakit-unsubscribe< at >googlegroups.com For more options, visit this group at http://groups.google.com/group/metakit?hl=en -~----------~----~----~----~------~----~------~--~--- Sean Hunt 2008-05-07T23:13:58 http://permalink.gmane.org/gmane.comp.db.metakit/2338 Hi, i need to make a windows build of a python program that uses metakit. I have read that i should use the latest version of metakit to be able to use python 2.5. However i have been unable to find binaries for download. I ask one of 2 things: 1) Someone share their binaries (from what i understand, a single DLL) if they have made them 2) Someone point me to instructions on how to make them myself. I do not have a C compilation environment set up. I have python, wx and py2exe setup that i have used before, but this time i would need metakit too. I'm on a bit of a tough spot here so i'd really appreciate any help. Hugo --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the "metakit" group. To post to this group, send email to metakit< at >googlegroups.com To unsubscribe from this group, send email to metakit-unsubscribe< at >googlegroups.com For more options, visit this group at http://groups.google.com/group/metakit?hl=en -~----------~----~----~----~------~----~------~--~--- cttw 2008-04-29T21:21:03 http://permalink.gmane.org/gmane.comp.db.metakit/2337 Hi, Has anyone made a study of Metakit's memory usage patterns? I'm asking because I've created an 'associative database' layer on top of Metakit, which I plan to deploy on a server with harsh memory limitations. My database over time is likely to end up with tens or hundreds of thousands of rows across 3 views. Use of derived rows will be kept fairly minimal. Metakit appeals to me because of its nested views. But for such a size of database, I'm worried that memory usage during the lifetime of 'storage' objects will grow in proportion to the size of the database. For such a size of database, would I be better off using my MySQL version of the layer? Cheers Dave --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the "metakit" group. To post to this group, send email to metakit< at >googlegroups.com To unsubscribe from this group, send email to metakit-unsubscribe< at >googlegroups.com For more options, visit this group at http://groups.google.com/group/metakit?hl=en -~----------~----~----~----~------~----~------~--~--- Dave 2008-04-27T23:26:35 http://permalink.gmane.org/gmane.comp.db.metakit/2336 --- Jean-Claude Wippler <jcw< at >equi4.com> wrote: I build the dump demo and ran it in the database and got the following: testmetakit.dat: 1 properties tst[ID:S,testnum:L,result:D] VIEW 1 rows = tst:V 0: subview 'tst' VIEW 2 rows = ID:S testnum:L result:D 0: 'ab' (L?) 3.1415 1: 'xy' (L?) 2.345 It looks like it can not read the the LongProp, so I changed it to an IntProp and it works now. I suspect a windows only problem with c4_LongProp. I can us Ints where I was planning on using long, so I have a work around. If I have time after I finish this project I'll look at c4_LongProp and let you know what I find. Thank you for your help. -EdK Ed Keith e_d_k< at >yahoo.com Blog: edkeith.blogspot.com ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the "metakit" group. To post to this group, send email to metakit< at >googlegroups.com To unsubscribe from this group, send email to metakit-unsubscribe< at >googlegroups.com For more options, visit this group at http://groups.google.com/group/metakit?hl=en -~----------~----~----~----~------~----~------~--~--- Ed Keith 2008-03-13T20:13:21 http://permalink.gmane.org/gmane.comp.db.metakit/2335 On 13 Mar 2008, at 04:48, Ed Keith wrote: I cannot reproduce this (on macosx) and get the expected results. Please delete the old datafile. If the problem persists, run the test suite with "make test". I can't think of any explanation so far. -jcw --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the "metakit" group. To post to this group, send email to metakit< at >googlegroups.com To unsubscribe from this group, send email to metakit-unsubscribe< at >googlegroups.com For more options, visit this group at http://groups.google.com/group/metakit?hl=en -~----------~----~----~----~------~----~------~--~--- Jean-Claude Wippler 2008-03-13T11:34:25 http://permalink.gmane.org/gmane.comp.db.metakit/2334 --- Jean-Claude Wippler <jcw< at >equi4.com> wrote: I removed the space, and I'm still having the same problem. To give more details; I run the program twice, the first time I enter ID = "ab" test = 1 result = 3.1415 the second time I enter ID = "xy" test = 2 result = 2.345 I look at the database in kviewer and see two rows "ab", 1, 3.1415 "xy", 3.1415, 2.345 Not only is this not the data I enterd, but, I do not understand how 3.1415 can be stored in a property that is declared to be long. -EdK Ed Keith e_d_k< at >yahoo.com Blog: edkeith.blogspot.com ____________________________________________________________________________________ Looking for last minute shopping deals? Find them fast with Yahoo! Search. http://tools.search.yahoo.com/newsearch/category.php?category=shopping --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the "metakit" group. To post to this group, send email to metakit< at >googlegroups.com To unsubscribe from this group, send email to metakit-unsubscribe< at >googlegroups.com For more options, visit this group at http://groups.google.com/group/metakit?hl=en -~----------~----~----~----~------~----~------~--~--- Ed Keith 2008-03-13T03:48:38 http://permalink.gmane.org/gmane.comp.db.metakit/2333 On 12 Mar 2008, at 21:28, EdK wrote: [...] The space before the colon is the problem, I suspect. (And yes, that's an ugly weakness of MK, I agree ...) -jcw --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the "metakit" group. To post to this group, send email to metakit< at >googlegroups.com To unsubscribe from this group, send email to metakit-unsubscribe< at >googlegroups.com For more options, visit this group at http://groups.google.com/group/metakit?hl=en -~----------~----~----~----~------~----~------~--~--- Jean-Claude Wippler 2008-03-12T21:08:43 http://permalink.gmane.org/gmane.comp.db.metakit/2332 I'm trying to use metakit with mingw C++ under windows XP, but my data seems to be getting curupted. this is my code: #include "mk4.h" #include "mk4str.h" #include <iostream> #include <string> const std::string test_table_name("tst"); const std::string ID_field_name("ID"); const std::string result_field_name("result"); const std::string test_number_field_name("testnum"); c4_StringProp pID (ID_field_name.c_str()); c4_DoubleProp pResult (result_field_name.c_str()); c4_LongProp pTestNum (test_number_field_name.c_str()); int main() { std::cout << "testing MetaKit" << std::endl; c4_Storage storage ("testmetakit.dat", true); std::cout << storage.Description() << std::endl; // Start with an empty view of the proper structure. c4_View record = storage.GetAs((test_table_name + "[" + ID_field_name + ":S," + test_number_field_name + ":L," + result_field_name + " :D]").c_str()); c4_Row row; double result; long test_number; std::string id; std::cout << "enter subject ID :" << std::endl; std::cin >> id; std::cout << "enter test number :" << std::endl; std::cin >> test_number; std::cout << "enter test result :" << std::endl; std::cin >> result; std::cout << "ID : " << id << " test : " << test_number << " result : " << result << std::endl; record.Add(pID[id.c_str()] + pTestNum[test_number] + pResult[result]); // This saves the data to file. storage.Commit(); return 0; } I know the data is being read properly, because the output before the record.add has the correct data. but when I open the file with kviewer the test number and result field do not contain the correct data. What am I doing wrong? -EdK --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the "metakit" group. To post to this group, send email to metakit< at >googlegroups.com To unsubscribe from this group, send email to metakit-unsubscribe< at >googlegroups.com For more options, visit this group at http://groups.google.com/group/metakit?hl=en -~----------~----~----~----~------~----~------~--~--- EdK 2008-03-12T20:28:12 http://permalink.gmane.org/gmane.comp.db.metakit/2331 I recently compiled 2.4.9.7 and I am running into the following situation. Any idea where to turn? % load ./libMk4tcl2.4.9.7.so couldn't load file "./libMk4tcl2.4.9.7.so": ./libMk4tcl2.4.9.7.so: undefined symbol: __cxa_pure_virtual My TCL is a binary build straight out of the fedora distribution. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the "metakit" group. To post to this group, send email to metakit< at >googlegroups.com To unsubscribe from this group, send email to metakit-unsubscribe< at >googlegroups.com For more options, visit this group at http://groups.google.com/group/metakit?hl=en -~----------~----~----~----~------~----~------~--~--- tallguy 2008-02-18T21:43:07 http://permalink.gmane.org/gmane.comp.db.metakit/2330 Hi, I was looking for a C# binding for Metakit. I found some 2 year old discussions about someone working on a swig interface for Metakit. But I found nothing after that. Does anyone know if there are swig interface files or C# bindings made by anyone ? Thanks, - dBera --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the "metakit" group. To post to this group, send email to metakit< at >googlegroups.com To unsubscribe from this group, send email to metakit-unsubscribe< at >googlegroups.com For more options, visit this group at http://groups.google.com/group/metakit?hl=en -~----------~----~----~----~------~----~------~--~--- dBera 2008-01-21T02:51:09 http://permalink.gmane.org/gmane.comp.db.metakit/2329 Hello, I have a simple program that freezes at delete : c4_Storage *storage=NULL; const char*path="C:\\zdrop\\SAV\\ActiveX55\\sample_vb2005\\sample_vb\\bin\\Debug\\cd\\data.winpi"; storage=new c4_Storage(path,false); if (storage!=NULL) { delete storage; storage=NULL; } The file data.winpi has some views with about 100 000 records, but nothing really huge. It has been created with a version 2.4.9.2 probably. Debugging into metakit I found that in c4_FormatV::c4_FormatV, the loop is really big (_subSeqs.GetSize()=109860), this seems strange since I did not try to access the view at all. In release there is no problem (except when launching release program from visual studio with F5) Because of this behaviour, I cannot close my application correctly in debug. Is there any workaround ? Florent Lejeune 2007-12-04T09:53:52 http://permalink.gmane.org/gmane.comp.db.metakit/2328 Germán Blando 2007-11-12T22:16:23 http://permalink.gmane.org/gmane.comp.db.metakit/2327 Riccardo Cohen wrote: Yes. That's correct. For maximum portability, all strings in and out of Metakit should be in UTF8. What you've done is change the calling convention so Metakit expects a Windows-specific "codepage" encoding. (Google tells me that CP_ACP means "I do not care what the system default codepage is -- just use it") While this works, you lose some flexibility: what if you wanted to save to a filename which has characters outside the range used in your own locale? With UTF8 everywhere, you can use filenames with any characters in them on any system. The consequence though, is that you have to do what Riccardo did: convert filenames to UTF8 before passing them to Metakit. -jcw --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the "metakit" group. To post to this group, send email to metakit< at >googlegroups.com To unsubscribe from this group, send email to metakit-unsubscribe< at >googlegroups.com For more options, visit this group at http://groups.google.com/group/metakit?hl=en -~----------~----~----~----~------~----~------~--~--- Jean-Claude Wippler 2007-11-12T10:44:51 http://permalink.gmane.org/gmane.comp.db.metakit/2326 I don't think it depends on windows install. Germán Blando wrote: Riccardo Cohen 2007-11-12T10:31:51 http://permalink.gmane.org/gmane.comp.db.metakit/2325 Germán Blando 2007-11-12T10:09:17 http://permalink.gmane.org/gmane.comp.db.metakit/2324 I noticed also that on windows, metakit needs utf8 file names. But did not test on other plateforms.I supposed all plateforms need utf8 ? Anyway I rather changed my code to give utf8 to metakit. Any precision would be appreciated. Thanks Tecnonucleo wrote: Riccardo Cohen 2007-11-11T14:50:02 http://permalink.gmane.org/gmane.comp.db.metakit/2323 Hello all I've used Metakit for a while, and recently I had some issues with file names containing accent characters, like á or é. It only occurs in Windows XP. In Linux all works ok. But in Windows, when the file name had latin accent characters, Metakit suppress them and thus it tried to open a non existing file. I debug into Metakit source code and I found that the character missing happened in this line: MultiByteToWideChar(CP_UTF8, 0, fname_, - 1, wName, MAX_PATH); I'm not an expert in Win32 API, but after some googling I decided to change the CP_UTF8 parameter for CP_ACP. And then all began to work ok as in Linux. The new version of the previous line now looks like that: MultiByteToWideChar(CP_ACP, 0, fname_, - 1, wName, MAX_PATH); I'm not sure if it make sense to change the Metakit sources that way, but in any case I want to share this issue and maybe get some feedback about the patch I applied. Greetings, German --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the "metakit" group. To post to this group, send email to metakit< at >googlegroups.com To unsubscribe from this group, send email to metakit-unsubscribe< at >googlegroups.com For more options, visit this group at http://groups.google.com/group/metakit?hl=en -~----------~----~----~----~------~----~------~--~--- Tecnonucleo 2007-11-10T12:34:41 http://permalink.gmane.org/gmane.comp.db.metakit/2322 David McNab wrote: my only objection to SQL is that it typically takes me five to 10 times longer to solve a problem using SQL. I don't know why I have this mental block but it is an absolute horrific experience I wouldn't wish my worst enemy. it's also fat, clumsy, hard to use, etc. etc. Using an mySQL database in a startup where I was a founder and small-scale funder cost me almost $50,000 and a year of my life. I've also used SQL and make a few more projects and they all took weeks and months longer than dbm based hacks. They also didn't run that much faster. I'm sorry that I did not express myself well. I do not want to access metakit remotely. I want to stick metakit in a framework so that it can be used as a component from inside a pyro server. In other words, metakit encapsulated to be local to the server code but remote and indivisible to the client-side code. no, that doesn't map to what I'm thinking about. Again, client side knows nothing about metakit. Server side knows everything. Requests are effectively queued server-side via some form of locking mechanism. since each request has exactly once call and return semantics,a lock makes more sense than a queue. I'm a strong believer in putting as high a level as possible into a server if you're going to use a server in an application. SQL servers are a botched design especially when you look at the volume of traffic going back and forth between applications as they do requests and then a half a dozen other steps to accomplish the higher-level goal. In many cases, they would be far better off pushing application logic into a core server and keeping the database local. I know SQL has hacks upon hacks to provide this capability but, I'm not willing to sacrifice huge amounts of time and and a customer's budget to use those hacks. yeah, I'm opinionated on this. It's unfortunate something that goes with the territory :-) ---eric Eric S. Johansson 2007-09-28T21:09:28 http://permalink.gmane.org/gmane.comp.db.metakit/2321 On Fri, 2007-09-28 at 13:58 -0400, Eric S. Johansson wrote: Thinking more broadly, have you specifically ruled out using an object interface to a common SQL database, such as SQLObject over MySQL? That combination is extremely thread-safe, and gives the remote clients an excellent object view of tables, columns, rows etc. And it's pretty easy to use. If this doesn't appeal, and you're feeling pretty determined to access metakit remotely, then have you figured out a clear definition of exactly what kind of 'look and feel' you want on the client side? If your 'look and feel' requirements aren't too demanding, then it should be possible to set up a Queue-based multithread setup on the server, such that only one of the server threads is accessing the actual metakit database, and other threads which talk to the remote client communicate with this one thread. This wouldn't require any mods to metakit or Pyro - just an access layer. Cheers David --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the "metakit" group. To post to this group, send email to metakit< at >googlegroups.com To unsubscribe from this group, send email to metakit-unsubscribe< at >googlegroups.com For more options, visit this group at http://groups.google.com/group/metakit?hl=en -~----------~----~----~----~------~----~------~--~--- David McNab 2007-09-28T20:36:46 http://permalink.gmane.org/gmane.comp.db.metakit/2320 just want to throw this idea out and see it in appeal to anyone. I would work on it myself except for the fact that my wrists have given out (yet again) and writing code with speech recognition isn't the most efficient method. I have been working on a project where I am using Pyro (Python remote objects) as a way of providing network access to a variety of operations on top of database services. I have been struggling with a variety of database techniques and I keep coming back to metakit as a solution that just feels right in terms of level of effort etc. The main problem is that Python remote object servers are multithreaded. They are either threaded on an object basis or connection basis. Everything I've read so far says that metakit is maybe yes, maybe no, happy with threads in the Python environment. My wish: update/validate metakit to work with threads in general and Pyro servers specifically. I'm not asking for a lot. Metakit access could be single threaded which still allows for server applications to be multithreaded. I believe that something this "simple" would be good because, in theory, it's either present but on validated or relatively easy to accomplish. in addition to this wish, I would like to see a release of a thread capable/okay metakit in conjunction with Pyro 4.0. A joint project/release would bring good, positive attention to both projects. If folks think it's a good idea, what would it take to validate metakit in a threaded environment like the one I propose? Is there a simpler model for dealing with threaded environments that I'm not aware of? I have templates for Pyro servers that I could use to help build a testbed but I'm missing some critical knowledge to be able to complete the project. Ever hopeful: ---eric Abused by speech recognition since 1995 --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the "metakit" group. To post to this group, send email to metakit< at >googlegroups.com To unsubscribe from this group, send email to metakit-unsubscribe< at >googlegroups.com For more options, visit this group at http://groups.google.com/group/metakit?hl=en -~----------~----~----~----~------~----~------~--~--- Eric S. Johansson 2007-09-28T17:58:36 Search the mailing list at Gmane query http://search.gmane.org/?group=$group=gmane.comp.db.metakit