Ora:readFile('fileName','nxsdTemplate'?,'nxsdRoot'?) syntax and how to uset

Question

I have been trying to use ora:readFile('fileName','nxsdTemplate'?,'nxsdRoot'?) but unable to use it as it is not reading any value for 'nxsdRoot'
Could you tell me what is the exact value of this parameter.
ora:readFile('fileName','nxsdTemplate') this expression is working fine.
So can any one tellme please that what will be the value of 'nxsdRoot'

Answer 1

I have tried to implement the following code but my file attached to the email is still not readable. Is the syntax correct ?
<copy>
<from expression="ora:readFile('file:///D:\work\SOA\eou-prod-schedule2.xml')"/>
<to variable="varNotificationReq" part="EmailPayload" query="/EmailPayload/ns5:Content/ns5:ContentBody/ns5:MultiPart/ns5:BodyPart[2]/ns5:ContentBody"/>
</copy>
</assign>
<bpelx:exec import="org.w3c.dom.Element"/>
<bpelx:exec import="com.collaxa.common.util.Base64Decoder"/>
<bpelx:exec import="com.collaxa.common.util.Base64Encoder"/>
<bpelx:exec name="invokeJavaExec" language="java" version="1.4">
<![CDATA[
try{
System.out.println("Starting encoding*******************");
Element node = (Element)getVariableData("Receive_RejectedMessage_handleRejection_InputVariable",
"message","/exp:RejectedMessage/exp:MessagePayload");
String strBase64 = (String) node.getNodeValue();
String decoded = Base64Decoder.decode(strBase64);
setVariableData("DecodedMsg", "message",
"/exp:RejectedMessage/exp:MessagePayload",decoded);
}catch(Exception exp){
System.out.println("Failed to decode rejected message using base64 " +
" encoding due to : " + exp);
]]>
</bpelx:exec>