MarkLogic 10 Product Documentationjson:set-item-at
json:set-item-at( $array as json:array, $pos as xs:double, $value as item()* ) as empty-sequence()
Summary
Sets a value in an array at a specified position.
| Parameters | |
|---|---|
| array | An array. |
| pos | The position to update. Invalid positions throw XDMP-ARRAYINDEXOUTOFBOUNDS |
| value | A value. Empty sequences are allowed. |
Example
let $array := json:to-array( ("a","b","c"), 5 )
let $put := json:set-item-at($array, 5 , <info>45683</info>)
return
<result>{$array}</result>
=>
<result>
<json:array xmlns:json="http://marklogic.com/xdmp/json">
<json:value xsi:type="xs:string">a</json:value>
<json:value xsi:type="xs:string">b</json:value>
<json:value xsi:type="xs:string">c</json:value>
<json:value xsi:nil="true"/>
<json:value><info>45683</info></json:value>
</json:array>
</result>
Example
xquery version "1.0-ml";
let $array := json:to-array(("a", "z", "c"))
return (
$array[2],
json:set-item-at($array, 2, "b"),
$array[2]
)
=>
z
b