Difference between revisions of "Update Module"
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All functions in this module are assigned to the <code><nowiki>http://basex.org/modules/update</nowiki></code> namespace, which is statically bound to the {{Code|update}} prefix.<br/> | All functions in this module are assigned to the <code><nowiki>http://basex.org/modules/update</nowiki></code> namespace, which is statically bound to the {{Code|update}} prefix.<br/> | ||
− | = | + | =Output= |
==update:output== | ==update:output== |
Revision as of 11:38, 12 December 2017
This XQuery Module adds updating functions.
Conventions
All functions in this module are assigned to the http://basex.org/modules/update
namespace, which is statically bound to the update
prefix.
Output
update:output
Template:Mark: formerly db:output
.
Signatures | update:output($result as item()*) as empty-sequence()
|
Summary | This function can be used to both perform updates and return results in a single query. The argument of the function will be evaluated, and the resulting items will be cached and returned after the updates on the pending update list have been processed. As nodes may be updated, they will be copied before being cached. The function can only be used together with updating expressions; if the function is called within a transform expression, its results will be discarded. |
Examples |
|
update:output-cache
Template:Mark: formerly db:output-cache
.
Signatures | update:output-cache() as item()*
|
Summary | Returns the items that have been cached by update:output. It can be used to check which items will eventually be returned as result of an updating function. This function is non-deterministic: It will return different results before and after items have been cached. It is e. g. useful when writing unit tests. |
Changelog
Added with Version 9.0.