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Update Transactions

Performing Update Transactions

1. Performing update transactions in XQRS

By default all functions invoked by XQRS are executed in read only mode.
You can change the transaction type of the function by adding the %xdmp:update annotation, which will set the transaction type to "update".

Consider the following set of functions, only the last function get is a read-only function. 

declare
  %rest:path("/my-stuff/insert/{$uri}")
  %xdmp:update
function insert($uri as xs:string) {
  xdmp:document-insert($uri, <e>{$uri}</e>)
};

declare
  %rest:path("/my-stuff/delete/{$uri}")
  %xdmp:update
function delete($uri as xs:string) {
  xdmp:document-delete($uri)
};

declare
  %rest:path("/my-stuff/get/{$uri}")
function get($uri as xs:string) {
  fn:doc($uri)
};

NOTE

If you directly call a RESTXQ function which is decorated with an %xdmp:update annotation (i.e. from one of your own functions) this won't change the current transaction type. It must be directly invoked from the XQRS framework in order for the transaction type to be upgraded to an update transaction.

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