Prevents other threads from simultaneously accessing a group of databases.
numero = 200[exclusivelock db=orders.db&db=lineitems.db&db=accesslog.db]...search, delete, or modify any of orders.db, lineitems.db, or accesslog.db while being assured that no other threads can modify any of these databases until the closing /exclusivelock tag is reached.[/exclusivelock]The list of database names is first alphabetized so as to maintain a consistent locking order (a technique which prevents internal deadlocks), then each database lock is acquired one at a time until all locks are acquired, then the interior WebDNA is executed. If any lock cannot be acquired, the other databases are unlocked, and the interior WebDNA is not executed. [exclusivelock database list]...WebDNA...[/exclusivelock]
[exclusivelock db=orders.db&db=lineitems.db&db=accesslog.db]
...search, delete, or modify any of orders.db, lineitems.db, or accesslog.db while being assured that no other threads can modify any of these databases until the closing /exclusivelock tag is reached.
[/exclusivelock]
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A compilation of some user's questions...
WebDNA ModulesA list of the currently available modules...
Download WebDNA ApplicationsWebDNA applications...
WebDNA LibrariesA list of available libraries for WebDNA...
WebDNA reference...
AWS Raw WebDNA LAMP-Plus WebServerAmazon Web Services (AWS) README for Machine Image ID...
Deletes a folder from your website...
[convertwords]Changes specified words in a string of text to different words...
[table][table] allows you to quickly create a temporary 'in line' database that is local to the template and not part of the global database cache...
[shell][shell] is a way to use the command line with your webserver...
[session][session] is a new WebDNA feature that recognises a browser through its "fingerprint"...
[listmimeheaders]Lists all the MIME header names and values sent from the remote browser...