Add Namespce and message type to incoming file

Question

Hi Experts,
I have a file to Idoc scenario where my input file comes without a name space message type like this
<?xml version="1.0" encoding="UTF-8"?>
<Header>
    <Field>
      <FieldSeparator/>
      <EncodingCharacters/>
      <SendingApplication/>
</Field>
     In PI I have created the data type in a particular namespace and the message type, so when this file is polled for at the source folder, it fails in the moni
any idea on how to proceed ??
Regards,
Teja

Answer 1

Hi Ravi,
You can do it with a simple JAVA mapping.
You need to add this Java Mapping in Operation mapping Before your actual graphical mapping.
INPUT:
<?xml version="1.0" encoding="UTF-8"?>
<Header>
<Field>
<FieldSeparator/>
<EncodingCharacters/>
<SendingApplication/>
</Field>
</Header>
OUTPUT:
<?xml version="1.0" encoding="UTF-8"?>
<ns0:MessageType xmlns:ns0="urn:sap.com:test:mapping:java">
<Header>
<Field>
<FieldSeparator/>
<EncodingCharacters/>
<SendingApplication/>
</Field>
</Header>
</ns0:MessageType>
Please find the Java code.
package addMessageTypeAndNamespace;
import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
//1. AbstractTransformation class is imported.
import com.sap.aii.mapping.api.AbstractTransformation;
import com.sap.aii.mapping.api.InputAttachments;
import com.sap.aii.mapping.api.InputParameters;
import com.sap.aii.mapping.api.InputPayload;
import com.sap.aii.mapping.api.OutputAttachments;
import com.sap.aii.mapping.api.OutputHeader;
import com.sap.aii.mapping.api.OutputParameters;
import com.sap.aii.mapping.api.OutputPayload;
import com.sap.aii.mapping.api.StreamTransformationException;
import com.sap.aii.mapping.api.TransformationInput;
import com.sap.aii.mapping.api.TransformationOutput;
import com.sap.aii.mapping.api.InputHeader;
public class addMessageTypeAndNamespace extends AbstractTransformation{
     public void transform(TransformationInput arg0, TransformationOutput arg1) throws StreamTransformationException
          try {
               String strinput=readInputStreamAsString(arg0.getInputPayload().getInputStream());
               String withoutXmlDeclaration=strinput.substring(39, strinput.length());
               String XmlDeclaration=strinput.substring(0, 38);
               strinput=XmlDeclaration+"<ns0:MessageType xmlns:ns0=\"urn:sap.com:test:mapping:java\">"+withoutXmlDeclaration+"</ns0:MessageType>";
               arg1.getOutputPayload().getOutputStream().write(strinput.getBytes("UTF-8"));
          } catch (IOException e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
          catch (NullPointerException e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
               getTrace().addInfo(e.getMessage());
public static String readInputStreamAsString(InputStream in)      throws IOException
     BufferedInputStream bis = new BufferedInputStream(in);
     ByteArrayOutputStream buf = new ByteArrayOutputStream();
     int result = bis.read();  
     while(result != -1)
          byte b = (byte)result;  
          buf.write(b);    
          result = bis.read(); 
     return buf.toString();