XQuery fn:replace not behaving as expected

问题

I have an Excel worksheet in XML format which contains

<Cell ss:StyleID="s127"><Data ss:Type="String">Replace Me</Data></Cell>

I want to replace @A01-Replace with a different string. I'm using the XQuery's replace function like so:

let $excel := doc("document.xml")

let $test := "another string"

return replace($excel, "Replace Me", $test)

Before calling replace, the variable $excel is valid XML upon output. However, when I output $excel after I call the replace function, all of the XML tags have been stripped, and $excel is a string with the content of the cells as its values. I would like to keep the XML tags there.

What I expect is

<Cell ss:StyleID="s127"><Data ss:Type="String">another string</Data></Cell>

However, I get

another string

All the XML tags are stripped out.

Any ideas?

回答1:

fn:replace is a simple String Manipulation Function from XQuery.

This function works with a String and not node()* types data-type.

let $replaced-str := fn:replace( $excel/Data/text(), "Replace Me", $test)

should return another string.

If you want to work with an XML document then you need to use xdmp:node-replace type function which is specific to MarkLogic XmlDatabase.

If you want a simple XQuery/Xml/Memory based node-replace then you can write a simple recursive replace method which accepts an XPath and re-creates a new node. Or check out this MarkLogic-commons example.

来源：https://stackoverflow.com/questions/2901441/xquery-fnreplace-not-behaving-as-expected