%dw 2.0
output application/xml
ns orders http://www.acme.com/shemas/Orders
ns stores http://www.acme.com/shemas/Stores
---
root:
orders#orders: {
stores#shipNodeId: "SF01",
stores#shipNodeId @(shipsVia:"LA01"): "NY03"
}
Include XML Namespaces
You can define different namespaces in the header and then reference them on each tag. Before you begin, note that 2.x versions of DataWeave are used by Mule 4 apps. For DataWeave in Mule 3 apps, refer to DataWeave version 1.2 examples. For other DataWeave versions, you can use the version selector in the DataWeave table of contents.
Starting in the Mule 4.2.1 release, DataWeave also supports dynamically generated namespace keys and attributes.
The following example uses:
-
ns
for namespace definitions in the header -
@
to define other attributes in an XML element
<?xml version='1.0' encoding='UTF-8'?>
<root>
<orders:orders xmlns:orders="http://www.acme.com/shemas/Orders">
<stores:shipNodeId xmlns:stores="http://www.acme.com/shemas/Stores">SF01</stores:shipNodeId>
<stores:shipNodeId xmlns:stores="http://www.acme.com/shemas/Stores" shipsVia="LA01">NY03</stores:shipNodeId>
</orders:orders>
</root>
Dynamically Generated Namespace Values
Support starting in Mule version 4.2.1
Using input defined in the DataWeave variables, the DataWeave functions in the following example output values for namespace keys and attributes.
%dw 2.0
fun dynKeyNs(ns0: Namespace, value: Any) = { ns0#myDynKey: value }
fun dynAttrNs(ns0: Namespace, value: Any) = { myChildTag @(ns0#myDynAttribute: true): value }
var namespace1 = {uri: "http://acme.com", prefix: "ns0"} as Namespace
var namespace2 = {uri: "http://emca.com", prefix: "ns0"} as Namespace
output application/xml
---
root:
{
mytagA: dynKeyNs(namespace1, "myTest1"),
myTagB: dynKeyNs(namespace2, "myTest2"),
myTagC: dynAttrNs(namespace1, "myTest1"),
myTagD: dynAttrNs(namespace2, "myTest2")
}
<?xml version='1.0' encoding='UTF-8'?>
<root>
<mytagA>
<ns0:myDynKey xmlns:ns0="http://acme.com">myTest1</ns0:myDynKey>
</mytagA>
<myTagB>
<ns0:myDynKey xmlns:ns0="http://emca.com">myTest2</ns0:myDynKey>
</myTagB>
<myTagC>
<myChildTag xmlns:ns0="http://acme.com" ns0:myDynAttribute="true">myTest1</myChildTag>
</myTagC>
<myTagD>
<myChildTag xmlns:ns0="http://emca.com" ns0:myDynAttribute="true">myTest2</myChildTag>
</myTagD>
</root>
Use XML Namespace with Hyphen Character
The following DataWeave script shows you how to define an XML namespace as an object, which enables you to use special characters such as hyphen (-
) in the namespace definition:
%dw 2.0
output application/xml
var myNS = {uri: "http://www.abc.com", prefix: "ns-0"} as Namespace
---
{myNS#bla : "dw"}
<?xml version='1.0' encoding='UTF-8'?>
<ns-0:bla xmlns:ns-0="http://www.abc.com">dw</ns-0:bla>