Remove Empty File

 

Here is a code To remove empty umwanted tags from your mapping.

After completing the graphical mapping use this structure independent code to remove empty tags from your structure as a second step.

Compile it and do not forget to include .project and .class files in the folder structure.

//Code Begins

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;

import com.sap.aii.mapping.api.AbstractTrace;
import com.sap.aii.mapping.api.StreamTransformation;
import com.sap.aii.mapping.api.StreamTransformationConstants;
import com.sap.aii.mapping.api.StreamTransformationException;

public class RemoveEmptyTags  implements
  StreamTransformation
{
 
  private Map           param = null;
  //private AbstractTrace  trace = null;

 public static void main(String args[])
 {
  try
  {
   System.out.println("Start...");
   InputStream in = new FileInputStream(new File(
     "ip1.xml"));
   OutputStream out = new FileOutputStream(
     new File(
       "op.xml"));
   RemoveEmptyTags myMapping = new RemoveEmptyTags();
   myMapping.execute(in, out);
   System.out.println("End...");

  }
  catch (Exception e)
  {
   System.out.println("ERROR IS :" + e.getMessage());
  }
 }

 public void execute(InputStream arg0, OutputStream arg1)
   throws StreamTransformationException
 {
//  trace = (AbstractTrace)param.get(
//                StreamTransformationConstants.MAPPING_TRACE );
 
  try
  {
   //trace.addInfo("Mapping to replace empty node started ...");   
   String sb = null;
      byte[] b = new byte[80000];
      for (int n; (n = arg0.read(b)) != -1;)
      {
          sb = new String(b, 0, n);
      }
      //sb = sb.replaceAll("<!--[A-Za-z0-9]*-->", "");
      for(int i =0;i<4;i++)
      {
       sb = sb.replaceAll("<[A-Za-z0-9]*></[A-Za-z0-9]*>", "");
       sb = sb.replaceAll("<[A-Za-z0-9]*/>", "");
      }
     
     
     
     
      arg1.write(sb.getBytes());
      sb =null;
   

  }
  catch (IOException e)
  {
   throw new StreamTransformationException("I/O exception", e);
  }
  catch (NullPointerException th)
  {
   throw new StreamTransformationException(th.getMessage(), th);
  }
  catch (Exception e)
  {
   throw new StreamTransformationException("Mapping failed", e);
  }

 }

 

 public void setParameter(Map param)
 {
  if (param == null) {
        this.param = new HashMap();
    }
}

}

//Code Ends