Re: Updating a database once per day - An example

This WebDNA talk-list message is from

1998


It keeps the original formatting.
numero = 17966
interpreted = N
texte = Thanks Ken,As you point out, this situation would be for after a database file has been manually changed. Often an organization will have a legacy database, and their IT department will be able to easily export a tab-delimited database to the Web server on a regular basis (i.e. once per hour, or once per day). After each new export of the database to the Web server, WebCatalog must be issued the [closedatabase] command for each applicable file.[CloseDatabase mydatabase.db] does two things: 1) It writes all changes to disk (in this example, there are no changes so nothing happends) 2) It then flushes the database from RAMNow, what I am trying to accomplish, mydatabase.db (which happens to be copied from the MainFrame to the Web Server at 3:03AM each night with the name mydatabase.db) will be closed at 3:10am, and then re-openned with fresh contents the next time it is needed.Steve steve@pop-art.com>>Here's an example of how I implemented a solution for making sure that >>Webcatalog is using the most recent copy of mydatabase.db: >> >>Rather than issuing an Applescript to tell Webcatalog to close databases at >>a certain time each day, I generated some WEBDNA that will close a specific >>database the first time it is needed after 3:10am. >> >>Here's the code: >> >> >>[SHOWIF [LOOKUP >>DB=flush.db&value=[url][date][/url]&lookinfield=DATE1&returnfield=TIME1¬fou >>nd >>=NOT_FOUND]=NOT_FOUND] >> >>[SHOWIF [time %H]>2] >>[SHOWIF [time %M]>9] >>[CLOSEDATABASE ../mydatabase.db] >>[CLOSEDATABASE FLUSH.DB] >>[APPEND flush.db]DATE1=[URL][date][/URL]&TIME1=[URL][TIME][/URL][/APPEND] >>[/SHOWIF][/SHOWIF][/SHOWIF] >> >>--------------------- >>flush.db: >> >>DATE1 TIME1 >>05/28/1998 14:48:50 >>05/29/1998 07:18:43 >> >>---------------------- >>I welcome all questions and suggestions. > > >Hi Steve, > >I din't understand what you're trying to accomplish here. Your code closes >the mydatabase.db file, but it doesn't change anything in that db,and it >doesn;t replace that file with another file. You never have to close the >db just to make sure WebCat's using the most recent data, because the most >recent data is always in RAM -- unless you're thinking about manually >replacing that file with another more recent one. Is that what you're >trying to accomplish here? Sorry I don't understand ... > >Sincerely, >Ken Grome >808-737-6499 >WebDNA Solutions >mailto:ken@webdna.net >http://www.webdna.net Associated Messages, from the most recent to the oldest:

    
  1. Re: Updating a database once per day - An example ( 1998)
  2. Re: Updating a database once per day - An example (bob 1998)
  3. Re: Updating a database once per day - An example (Kenneth Grome 1998)
  4. Re: Updating a database once per day - An example (Steve Rosenbaum 1998)
  5. Re: Updating a database once per day - An example (Kenneth Grome 1998)
  6. Re: Updating a database once per day - An example (Marty Schmid 1998)
  7. Re: Updating a database once per day - An example (Kenneth Grome 1998)
  8. Re: Updating a database once per day - An example (Kenneth Grome 1998)
  9. Re: Updating a database once per day - An example (Gary Richter 1998)
  10. Re: Updating a database once per day - An example (Peter Ostry 1998)
  11. Re: Updating a database once per day - An example (Kenneth Grome 1998)
  12. Re: Updating a database once per day - An example (Kenneth Grome 1998)
  13. Re: Updating a database once per day - An example (Rob Marquardt 1998)
  14. Re: Updating a database once per day - An example (Peter Ostry 1998)
  15. Re: Updating a database once per day - An example (Kenneth Grome 1998)
  16. Re: Updating a database once per day - An example (Kenneth Grome 1998)
  17. Re: Updating a database once per day - An example (Rob Marquardt 1998)
  18. Re: Updating a database once per day - An example (Rob Marquardt 1998)
  19. Re: Updating a database once per day - An example (Kenneth Grome 1998)
  20. Re: Updating a database once per day - An example (Steve Rosenbaum 1998)
  21. Re: Updating a database once per day - An example (Kenneth Grome 1998)
  22. Updating a database once per day - An example (Steve Rosenbaum 1998)
Thanks Ken,As you point out, this situation would be for after a database file has been manually changed. Often an organization will have a legacy database, and their IT department will be able to easily export a tab-delimited database to the Web server on a regular basis (i.e. once per hour, or once per day). After each new export of the database to the Web server, WebCatalog must be issued the [closedatabase] command for each applicable file.[CloseDatabase mydatabase.db] does two things: 1) It writes all changes to disk (in this example, there are no changes so nothing happends) 2) It then flushes the database from RAMNow, what I am trying to accomplish, mydatabase.db (which happens to be copied from the MainFrame to the Web Server at 3:03AM each night with the name mydatabase.db) will be closed at 3:10am, and then re-openned with fresh contents the next time it is needed.Steve steve@pop-art.com>>Here's an example of how I implemented a solution for making sure that >>Webcatalog is using the most recent copy of mydatabase.db: >> >>Rather than issuing an Applescript to tell Webcatalog to close databases at >>a certain time each day, I generated some WEBDNA that will close a specific >>database the first time it is needed after 3:10am. >> >>Here's the code: >> >> >>[SHOWIF [LOOKUP >>DB=flush.db&value=[url][date][/url]&lookinfield=DATE1&returnfield=TIME1¬fou >>nd >>=NOT_FOUND]=NOT_FOUND] >> >>[SHOWIF [time %H]>2] >>[SHOWIF [time %M]>9] >>[CLOSEDATABASE ../mydatabase.db] >>[CLOSEDATABASE FLUSH.DB] >>[APPEND flush.db]DATE1=[url][date][/URL]&TIME1=[url][time][/URL][/APPEND] >>[/SHOWIF][/SHOWIF][/SHOWIF] >> >>--------------------- >>flush.db: >> >>DATE1 TIME1 >>05/28/1998 14:48:50 >>05/29/1998 07:18:43 >> >>---------------------- >>I welcome all questions and suggestions. > > >Hi Steve, > >I din't understand what you're trying to accomplish here. Your code closes >the mydatabase.db file, but it doesn't change anything in that db,and it >doesn;t replace that file with another file. You never have to close the >db just to make sure WebCat's using the most recent data, because the most >recent data is always in RAM -- unless you're thinking about manually >replacing that file with another more recent one. Is that what you're >trying to accomplish here? Sorry I don't understand ... > >Sincerely, >Ken Grome >808-737-6499 >WebDNA Solutions >mailto:ken@webdna.net >http://www.webdna.net Steve Rosenbaum

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