Java PI7.1 mapping and standalone NWDS debugging using local XML files

Question

>>which can be debugged in standalone NWDS using local files.
yes its possible...u just have to add static void main (as sugested in the blog) ..
Note: i dont have a system as of now..so i guess there can be some sysntax errors. Please check.
create input xml file with name "input.xml" and place it under "D" drive (it can be any location)
package prasad.NewAPI;
import java.io.IOException;
import java.io.InputStream;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import com.sap.aii.mapping.api.AbstractTransformation;
import com.sap.aii.mapping.api.StreamTransformationException;
import com.sap.aii.mapping.api.TransformationInput;
import com.sap.aii.mapping.api.TransformationOutput;
* @author Prasad Nemalikanti
public class NewAPIJavaMapping extends AbstractTransformation {
public static void main(String[] args) {
          try{
               NewAPIJavaMapping javaMapping =new NewAPIJavaMapping();
               FileInputStream in=new FileInputStream("D:\\input.xml");
               FileOutputStream out=new FileOutputStream("D:\\output.xml");
               javaMapping.execute(in,out);
               catch(Exception e)
               e.printStackTrace();
   String result="";
  /* The transform method which must be implemented */
  public void transform(TransformationInput in,TransformationOutput out) throws StreamTransformationException
    InputStream instream = in.getInputPayload().getInputStream();
  // String for constructing target message structure
    String fresult="<?xml version=\"1.0\" encoding=\"UTF-8\"?>";
    fresult = fresult.concat("<ns0:MT_Customer xmlns:ns0=\"urn:newapi-javamapping\">");
    try{
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        DocumentBuilder builder = factory.newDocumentBuilder();
        Document doc = builder.parse(instream);
        traversingXML(doc);
     catch(Exception e){}
fresult = fresult.concat(result);
fresult = fresult.concat("</ns0:MT_Customer>");
try{
  out.getOutputPayload().getOutputStream().write(fresult.getBytes());
  /* assigning the created target message to "TransformationOutput"*/
   catch(IOException e1){}
/*DOM Parser */
public void traversingXML(Node node)
   NodeList children = node.getChildNodes();
   for(int i=0;i<children.getLength();i++)
     Node child = children.item(i);
     short childType = child.getNodeType();
     if(childType==Node.ELEMENT_NODE)
              String nodeName=child.getNodeName();
              String targetNodeName=null;
              if(nodeName.equals("Users"))
               targetNodeName="Customers";
              else if(nodeName.equals("ID"))
               targetNodeName="CustomerID";
              else if(nodeName.equals("UserName"))
               targetNodeName="Name";
              else if(nodeName.equals("City"))
                targetNodeName="City";
              else if(nodeName.equals("State"))
                targetNodeName="State";
              else if(nodeName.equals("Country"))
                targetNodeName="Country";
             if(targetNodeName!=null)
              result=result.concat("<"+targetNodeName+">");
   traversingXML(child);
   if(targetNodeName!=null)
   result=result.concat("</"+targetNodeName+">");
     else if(childType==Node.TEXT_NODE)
       String nodeValue = child.getNodeValue();
       result = result.concat(nodeValue);

Answer 1

I have tested this and it is working..please chk the same
package com.test;
import java.io.IOException;
import java.io.*;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import com.sap.aii.mapping.api.AbstractTransformation;
import com.sap.aii.mapping.api.StreamTransformationException;
import com.sap.aii.mapping.api.TransformationInput;
import com.sap.aii.mapping.api.TransformationOutput;
public class JavaMapping extends AbstractTransformation {
       /* The transform method which must be implemented */
       public void transform(TransformationInput in,TransformationOutput out) throws StreamTransformationException
            this.execute(in.getInputPayload().getInputStream(),
                      out.getOutputPayload().getOutputStream());
       String result="";
       public void execute(InputStream in1, OutputStream out1)
      throws StreamTransformationException {
       // String for constructing target message structure
         String fresult="<?xml version=\"1.0\" encoding=\"UTF-8\"?>";
         fresult = fresult.concat("<ns0:MT_Customer xmlns:ns0=\"urn:newapi-javamapping\">");
         try{
             DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
             DocumentBuilder builder = factory.newDocumentBuilder();
             Document doc = builder.parse(in1);
             traversingXML(doc);
          catch(Exception e){}
      fresult = fresult.concat(result);
      fresult = fresult.concat("</ns0:MT_Customer>");
      try{
       out1.write(fresult.getBytes());
       /* assigning the created target message to "TransformationOutput"*/
        catch(IOException e1){}
      /*DOM Parser */
      public void traversingXML(Node node)
        NodeList children = node.getChildNodes();
        for(int i=0;i<children.getLength();i++)
          Node child = children.item(i);
          short childType = child.getNodeType();
          if(childType==Node.ELEMENT_NODE)
                   String nodeName=child.getNodeName();
                   String targetNodeName=null;
                   if(nodeName.equals("Users"))
                    targetNodeName="Customers";
                   else if(nodeName.equals("ID"))
                    targetNodeName="CustomerID";
                   else if(nodeName.equals("UserName"))
                    targetNodeName="Name";
                   else if(nodeName.equals("City"))
                     targetNodeName="City";
                   else if(nodeName.equals("State"))
                     targetNodeName="State";
                   else if(nodeName.equals("Country"))
                     targetNodeName="Country";
                   if(targetNodeName!=null)
                       result=result.concat("<"+targetNodeName+">");
        traversingXML(child);
        if(targetNodeName!=null)
             result=result.concat("</"+targetNodeName+">");
          else if(childType==Node.TEXT_NODE)
            String nodeValue = child.getNodeValue();
            result = result.concat(nodeValue);
      public static void main(String[] args) {
               try{
                    JavaMapping javaMapping =new JavaMapping();
                    FileInputStream in=new FileInputStream("D:\\Input.xml");
                    FileOutputStream out=new FileOutputStream("D:\\output.xml");
                    javaMapping.execute(in,out);
                    catch(Exception e)
                    e.printStackTrace();
AM