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JavaScript ModifyPlan.prototype.patch

MarkLogic 12 Product Documentation
op:patch

op:patch(
   $plan as map:map,
   $doc-column as item(),
   $patch-def as map:map
) as map:map

Summary

Builds a patch operation including a sequence of inserts, replaces, replace-inserts and deletes.

Parameters
$plan The Optic Plan. You can either use the XQuery => chaining operator or specify the variable that captures the return value from the previous operation.
$doc-column The document column which needs to be patched. The column can be named with a string or a column function such as op:col, op:view-col, or op:schema-col.
$patch-def The patch definition as op:patch-builder

See Also

Example

xquery version "1.0-ml";
import module namespace op="http://marklogic.com/optic"
     at "/MarkLogic/optic.xqy";
declare option xdmp:update "true";

let $doc-descriptors := (
    map:entry("uri", '/optic/update/write4.xml')
      =>map:with("doc", <doc><action>write4</action></doc>),
    map:entry("uri", '/optic/update/write5.xml')
      =>map:with("doc", <doc><action>write4</action></doc>)
      =>map:with("collections", ("write"))
  )
return op:from-doc-descriptors($doc-descriptors)
=>op:patch(op:col("doc"),op:patch-builder("/",())
           =>op:insert-after("action",<status>NEW</status>)
          )
=>op:write(op:doc-cols())
=>op:result()

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