How to add namespace to all nodes after root?

gopalbaliga · December 6th, 2013, 12:59 AM

Hi experts,

My input XML is :

<?xml version="1.0" encoding="UTF-8"?>

<getResponse xmlns="https://test.com">

<ReturnMessage>

<recordCount/>

<returnCode/>

<returnMessage/>

</ReturnMessage>

</getResponse>

Here if you see that none of the nodes have any namespace prefix nor the child nodes.

What I want is, prefix and namespaces for all nodes. Also the prefix and namespace for root and immediate child node is same ns0 while for other nodes it is ns1.

ns0 and ns1 namespaces are different.

How can I get this in XSLT?

Is there any simple way? Please help!

Desired output XML:

<?xml version="1.0" encoding="UTF-8"?>
<ns0:getResponse xmlns:ns0="https://test.com">
<ns0:ReturnMessage>
<ns1:recordCount xmlns:ns1="https://test.com/schema/"/>
<ns1:returnCode xmlns:ns1="https://test.com/schema/"/>
<ns1:returnMessage xmlns:ns1="https://test.com/schema/"/>
</ns0:ReturnMessage>
</ns0:getResponse>

Thanks
Gopal

mhkay · December 6th, 2013, 04:37 AM

Your prose says "all elements except the root" but in your example, that would add the namespace to ReturnMessage. (and perhaps even to getResponse, if you take the XPath 1.0 definition of "root").

If the problem is as shown in your example, rather than as described in your narrative, then I would solve it by adding the new namespace to all elements that are currently in no namespace. That's done with two template rules:

Code:

<xsl:template match="*">
  <xsl:copy><xsl:apply-templates/></xsl:copy>
</xsl:template>

<xsl:template match="*[namespace-uri()='']">
  <xsl:element name="ns1:{local-name()}" namespace="https://test.com/schema">
    <xsl:apply-templates/>
  </xsl:element>
</xsl:template>

gopalbaliga · December 6th, 2013, 04:54 AM

Hi mhkay,

I have corrected the input XML. Here if you see that root node does not have any namespace prefix nor the child nodes.

What I want is, prefix and namespaces for all. Also the prefix and namespace for root and immediate child node is same ns0 while for other nodes it is ns1.

ns0 and ns1 namespaces are different.

How can I get this in XSLT?

Thanks
Gopal

mhkay · December 6th, 2013, 06:14 AM

Oh dear, I made a mistake I don't usually make, I gave you code rather than an explanation. Usually I prefer to give an explanation and leave people to write the code themselves, that way, when they change the requirements, they don't expect you to revise the solution.

The basic model is that you define two template rules that match (a) the elements you don't want to change, and (b) the elements you want to move into a new namespace. The template rule for (a) is the standard identity template, and the template rule for (b) is a modified identity template that uses xsl:element to change the element name to a name in the new namespace. The only thing that leaves is to define match patterns that distinguish the nodes you want to rename from those you want to leave alone.

gopalbaliga · December 6th, 2013, 08:28 AM

Hi mhkay,

I actually a novice in XSLT.

I tried your code as well. But it does not work.

I tries with different template rules like below. But I don't see any prefix added to the match nodes.


<xsl:template match="node()|@*">
<xsl:copy>
<xsl:apply-templates select="node()|@*"/>
</xsl:copy>
</xsl:template>

<xsl:template match="getResponse">
<xsl:element name="ns0:{name()}" namespace="https://test.com">
<xsl:apply-templates select="node()|@*"/>
</xsl:element>
</xsl:template>

<xsl:template match="recordCount">
<xsl:element name="ns1:{name()}" namespace="https://test.com/schema/">
<xsl:apply-templates select="node()|@*"/>
</xsl:element>
</xsl:template>

gopalbaliga · December 6th, 2013, 08:35 AM

On further analysis I found that if my root node has a default namespace then the XSLT code does not work.

<getResponse xmlns="https://test.com">
<ReturnMessage>
<recordCount>0</recordCount>
<returnCode>0</returnCode>
<returnMessage>Successfully returned 0 records</returnMessage>
</ReturnMessage>
<AMTRequests/>
</getResponse>

And if I remove the namespace from getResponse root node

<getResponse>
<ReturnMessage>
<recordCount>0</recordCount>
<returnCode>0</returnCode>
<returnMessage>Successfully returned 0 records</returnMessage>
</ReturnMessage>
<AMTRequests/>
</getResponse>

Then I am getting the result as below:

<?xml version="1.0" encoding="utf-8"?>
<ns0:getResponse xmlns:ns0="https://test.com">
<ReturnMessage>
<ns1:recordCount xmlns:ns1="https://test.com/schema/">0</ns1:recordCount>
<returnCode>0</returnCode>
<returnMessage>Successfully returned 0 records</returnMessage>
</ReturnMessage>
<AMTRequests />
</ns0:getResponse>

So what to change in my XSLT if my root node has namespace like <getResponse xmlns="https://test.com">

to get the result as above? Please help.

My XSLT:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" encoding="UTF-8" indent="yes"/>


<xsl:template match="node()|@*">
<xsl:copy>
<xsl:apply-templates select="node()|@*"/>
</xsl:copy>
</xsl:template>

<xsl:template match="getResponse">
<xsl:element name="ns0:{name()}" namespace="https://test.com">
<xsl:apply-templates select="node()|@*"/>
</xsl:element>
</xsl:template>

<xsl:template match="recordCount">
<xsl:element name="ns1:{name()}" namespace="https://test.com/schema/">
<xsl:apply-templates select="node()|@*"/>
</xsl:element>
</xsl:template>

</xsl:stylesheet>

Thanks
Gopal

mhkay · December 6th, 2013, 11:38 AM

AArghhh! You have edited the question since my first response, which makes a nonsense of my previous advice. Don't do that.

To match an element in a namespace you need to write match="p:local" where p is some prefix bound (in the stylesheet) to the namespace URI of the element, and local is the local name of the element.

gopalbaliga · December 6th, 2013, 12:48 PM

Thanks mhkay! This solved my problem

gopalbaliga · December 8th, 2013, 03:16 AM

Hi mhkay,

One last question.

I am almost able to generate the prefix and namespace except for nodes just after root node.

My input XML:

<getResponse xmlns="https://test.com">
<ReturnMessage>
<recordCount>0</recordCount>
<returnCode>0</returnCode>
<returnMessage>Successfully returned 0 records</returnMessage>
</ReturnMessage>
<AMTRequests/>
</getResponse>

MY XSLT:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" encoding="UTF-8" indent="yes"/>


<xsl:template match="node()|@*">
<xsl:copy>
<xsl:apply-templates select="node()|@*"/>
</xsl:copy>
</xsl:template>

<xsl:template match="p:getResponse">
<xsl:element name="ns0:{name()}" namespace="https://test.com">
<xsl:apply-templates select="node()|@*"/>
</xsl:element>
</xsl:template>

<xsl:template match="p:ReturnMessage">
<xsl:element name="ns0:{name()}" namespace="https://test.com">
<xsl:apply-templates select="node()|@*"/>
</xsl:element>
</xsl:template>

<xsl:template match="recordCount">
<xsl:element name="ns1:{name()}" namespace="https://test.com/schema/">
<xsl:apply-templates select="node()|@*"/>
</xsl:element>
</xsl:template>

</xsl:stylesheet>

This gives below result. Here the node (ReturnMessage) just after root node is not getting the prefix ns0. What could be the mistake in the XSLT code?

<ns0:getResponse xmlns:ns0="http://test.com">
<ReturnMessage xmlns="http://test.com">\
<ns1:recordCount xmlns:ns1="http://test1.com">0</ns1:recordCount><returnCode>0</returnCode>
<returnMessage>Successfully returned 0 records</returnMessage></ReturnMessage>
<AMTRequests xmlns="http://test.com"/>
</ns0:getResponse>

Thanks
Gopal

mhkay · December 8th, 2013, 02:14 PM

The element is in the right namespace, but not with the desired prefix. XSLT 1.0 says the processor can use any prefix it likes so long as the namespace is right, so you may be out of luck with your choice of XSLT processor. XSLT 2.0 is much more prescriptive: in this scenario, it requires the XSLT processor to use the prefix given.