Modify node text within xsl copy-of - xslt

Question

I have a xml document which looks like
<!-- language: lang-xml -->
<?xml version="1.0" encoding="UTF-8"?>
<Request xmlns="fst" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<Header>
<AccountServer e-dtype="int">3</AccountServer>
</Header>
<Response>
<ResponseList e-dtype="list">
<Response>
<RequestId e-dtype="string">ServiceOrderGetRef</RequestId>
<RequestObjName e-dtype="string">ServiceOrder</RequestObjName>
<ServiceOrder>
<CreateDt e-dtype="dateTime">2014-03-01 00:00:00</CreateDt>
<CreateWho e-dtype="string">vc</CreateWho>
<WorkflowStartDt e-dtype="dateTime">2014-04-01 00:00:00</WorkflowStartDt>
</ServiceOrder>
</Response>
<Response>
<ComponentList e-dtype="list"/>
<Count e-dtype="int">0</Count>
<RequestId e-dtype="string">ComponentFindRef</RequestId>
<RequestObjName e-dtype="string">Component</RequestObjName>
<TotalCount e-dtype="int">0</TotalCount>
</Response>
<Response>
<Count e-dtype="int">0</Count>
<CustomerContractList e-dtype="list"/>
<RequestId e-dtype="string">CustomerContractRef</RequestId>
<RequestObjName e-dtype="string">CustomerContract</RequestObjName>
<TotalCount e-dtype="int">0</TotalCount>
</Response>
<Response>
<Count e-dtype="int">0</Count>
<ProductList e-dtype="list"/>
<RequestId e-dtype="string">ProductRef</RequestId>
<RequestObjName e-dtype="string">Product</RequestObjName>
<TotalCount e-dtype="int">0</TotalCount>
</Response>
<Response>
<Count e-dtype="int">0</Count>
<NrcList e-dtype="list"/>
<RequestId e-dtype="string">NrcFindRef</RequestId>
<RequestObjName e-dtype="string">Nrc</RequestObjName>
<TotalCount e-dtype="int">0</TotalCount>
</Response>
</ResponseList>
</Response>
</Request>
I am using copy-of function to copy node ServiceOrder within another xml document
I want to modify text of node WorkFlowStartDt and CreateDt and then do a copy-of. How can I do this?
My copied serviceorder node should look like this after modifing text. Below is the result xml
<?xml version="1.0" encoding="UTF-8"?>
<Request>
<Header>
<OperatorName e-dtype="string">ws</OperatorName>
<ApplicationName e-dtype="string">ws</ApplicationName>
</Header>
<CustomerUdtRequest>
<RequestList e-dtype="list">
<LogicalServiceOrder>
<RequestId e-dtype="string">MyExistingOrder</RequestId>
<LogicalServiceOrderPreProcess>
<Fetch e-dtype="boolean">true</Fetch>
<Order>
<AccountInternalId e-dtype="int">12345</AccountInternalId>
<Key>
<OrderId e-dtype="numeric">12345678</OrderId>
</Key>
</Order>
<ServiceOrderList e-dtype="list">
<ServiceOrder xmlns="fst" xmlns:xsi="http://www.w3.org/2001/XMLSchema-
instance">
<CreateDt e-dtype="dateTime">2014-03-02 00:00:00</CreateDt>
<CreateWho e-dtype="string">vc</CreateWho>
<WorkflowStartDt e-dtype="dateTime">2014-05-01 00:00:00</WorkflowStartDt>
</ServiceOrder>
</ServiceOrderList>
</LogicalServiceOrderPreProcess>
</LogicalServiceOrder>
</RequestList>
</CustomerUdtRequest>
</Request>
Below is my xslt processor file
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml"/>
<xsl:template match="/">
<Request>
<Header>
<OperatorName e-dtype="string">ws</OperatorName>
<ApplicationName e-dtype="string">ws</ApplicationName>
</Header>
<CustomerUdtRequest>
<RequestList e-dtype="list">
<LogicalServiceOrder>
<RequestId e-dtype="string">MyExistingOrder</RequestId>
<LogicalServiceOrderPreProcess> <Order> <AccountInternalId e-dtype="int">
<xsl:value-of
select="/Request/Response/ResponseList/Response/ServiceOrder/AccountInternalId"/>
</AccountInternalId> <Key> <OrderId e-dtype="numeric"> <xsl:value-of select="/Request/Response/ResponseList/Response/ServiceOrder/OrderId"/>
</OrderId>
</Key>
</Order>
<ServiceOrderList e-dtype="list">
<xsl:copy-of select="/Request/Response/ResponseList/Response/ServiceOrder"/>
</ServiceOrderList>
</LogicalServiceOrderPreProcess>
</LogicalServiceOrder>
</xsl:if>
</RequestList>
</CustomerUdtRequest>
</Request>
</xsl:template>
</xsl:stylesheet>

Answer 1

I want to modify text of node WorkFlowStartDt and CreateDt and then do
a copy-of.
That would be an unnecessary complication. You can modify nodes while you add them to the output tree.
Since you essentially want to copy everything "as is" except two nodes, it would be best to start with an identity transform template, then add an "exception" template for the two specific nodes that need modifying (one template for both, since the modification is identical).:
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<!-- identity transformation -->
<xsl:template match="#*|node()">
<xsl:copy>
<xsl:apply-templates select="#*|node()"/>
</xsl:copy>
</xsl:template>
<xsl:template match="CreateDt | WorkFlowStartDt">
<xsl:copy>
<xsl:value-of select="concat('**', ., '**')"/>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
Added:
In response to the edited question, try this stylesheet:
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:ns="fst"
exclude-result-prefixes="ns">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:template match="/">
<Request>
<Header>
<OperatorName e-dtype="string">ws</OperatorName>
<ApplicationName e-dtype="string">ws</ApplicationName>
</Header>
<CustomerUdtRequest>
<RequestList e-dtype="list">
<LogicalServiceOrder>
<RequestId e-dtype="string">MyExistingOrder</RequestId>
<LogicalServiceOrderPreProcess>
<Order>
<AccountInternalId e-dtype="int">
<!-- THIS DOESN'T POINT TO ANY EXISTING NODE!! -->
<xsl:value-of select="ns:Request/ns:Response/ns:ResponseList/ns:Response/ns:ServiceOrder/ns:AccountInternalId"/>
</AccountInternalId>
<Key>
<OrderId e-dtype="numeric">
<!-- THIS DOESN'T POINT TO ANY EXISTING NODE!! -->
<xsl:value-of select="ns:Request/ns:Response/ns:ResponseList/ns:Response/ns:ServiceOrder/ns:OrderId"/>
</OrderId>
</Key>
</Order>
<xsl:apply-templates select="ns:Request/ns:Response/ns:ResponseList/ns:Response/ns:ServiceOrder"/>
</LogicalServiceOrderPreProcess>
</LogicalServiceOrder>
</RequestList>
</CustomerUdtRequest>
</Request>
</xsl:template>
<xsl:template match="ns:ServiceOrder">
<xsl:copy>
<xsl:copy-of select="ns:CreateWho"/>
<xsl:apply-templates select="ns:CreateDt | ns:WorkflowStartDt"/>
</xsl:copy>
</xsl:template>
<xsl:template match="ns:CreateDt | ns:WorkflowStartDt">
<xsl:copy>
<xsl:copy-of select="#*"/>
<xsl:value-of select="concat('**', ., '**')"/>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
When applied to your input (minus the illegal opening comment), the following result is obtained:
<?xml version="1.0" encoding="UTF-8"?>
<Request>
<Header>
<OperatorName e-dtype="string">ws</OperatorName>
<ApplicationName e-dtype="string">ws</ApplicationName>
</Header>
<CustomerUdtRequest>
<RequestList e-dtype="list">
<LogicalServiceOrder>
<RequestId e-dtype="string">MyExistingOrder</RequestId>
<LogicalServiceOrderPreProcess>
<Order>
<AccountInternalId e-dtype="int"/>
<Key>
<OrderId e-dtype="numeric"/>
</Key>
</Order>
<ServiceOrder xmlns="fst" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<CreateWho e-dtype="string">vc</CreateWho>
<CreateDt e-dtype="dateTime">**2014-03-01 00:00:00**</CreateDt>
<WorkflowStartDt e-dtype="dateTime">**2014-04-01 00:00:00**</WorkflowStartDt>
</ServiceOrder>
</LogicalServiceOrderPreProcess>
</LogicalServiceOrder>
</RequestList>
</CustomerUdtRequest>
</Request>