Add XML tag to the XML output File

Question

Experts,
My Scenario is JDBC to File
For the resultant xml file i have to append a line <?Test Line?> after
<?xml version="1.0" encoding="UTF-8" ?> while passing it to legacy system ?
From SDN I found that a XSLT Mapping(as second mapping in the Interface mapping) will do the above requirement,
I got some XSLT Code from SDN to do this
1) 
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output method="xml" />
  <xsl:template match="/">
<!--  add processing instruction -->
  <xsl:processing-instruction
name="POSTEN">SND="SE03220037090" SNDKVAL="1" REC="SE03220669500" MSGTYPE="ORDERS"</xsl:processing-instruction>
<!--  copy payload -->
  <xsl:copy-of select="." />
  </xsl:template>
  </xsl:stylesheet>
2) 
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output method="xml" />
  <xsl:template match="/">
<!--  add processing instruction -->
  <xsl:processing-instruction
name="POSTEN">SND="SE03220037090" SNDKVAL="1" REC="SE03220669500" MSGTYPE="ORDERS"</xsl:processing-instruction>
<!--  copy payload -->
  <xsl:copy-of select="." />
  </xsl:template>
  </xsl:stylesheet>
But none of them worked for me, the additional tag does not appear on the o/p xml file
Any help would be appreciated
Srinivas

Answer 1

Hello Srinivas,
I had achieved the same using java mapping:
Suppose your XML structure is:
<?xml version="1.0" encoding="UTF-8" ?>
<Root Element>----
</Root Element>
you can use the following code:
          import java.io.*;
          import java.util.*;
          import com.sap.aii.mapping.api.*;
          public class AddCommentInXML implements StreamTransformation {
          String record=null;
          String comment=null;
          public void execute(InputStream in, OutputStream out) {
          try {
          DataInputStream stdin = new DataInputStream(in);
          int length = getLengthFromStream(stdin);
          stdin.reset();
          byte[] buffer = getBytesFromStream(stdin);
          String str = new String(buffer);
          record = "<Root Element>";
          comment ="<!Test Line><Root Element>";
          str = str.replaceAll(record,comment);
          out.write(str.getBytes());
          out.close();
          } catch (IOException e) {
          public int getLengthFromStream(InputStream is ) throws
          IOException{
          int i = 0;
          int length = 0;
          try{
          while ((i = is.read())> 0){
          length ++;
          }catch (ArrayIndexOutOfBoundsException e) {
          e.printStackTrace();
          return length;
          public byte[] getBytesFromStream(InputStream is) throws
          IOException {
//             Create the byte array to hold the data
          byte[] bytes = new byte[getLengthFromStream(is)];
          is.reset();
//             Read in the bytes
          int offset = 0;
          int tmp = 0;
          while (offset < bytes.length
          && (is.read(bytes, offset, offset +
          (tmp = is.available()))) > 0) {
          offset += tmp;
//             Ensure all the bytes have been read in
          if (offset < bytes.length) {
          throw new IOException("Could not completely read Inputstream");
//             Close the input stream and return bytes
          is.close();
          return bytes;
          public void setParameter(Map param) {
Hope this helps.
Regards,
Shweta