Re: Adding Header in Appended File

Hi Bhaskar,

                  It has taken a lot of time to answer this query as it involved lot of trial and error. Try this code. I have assumed that last line of original file has no newline at the end. In case it has just initialise value of count variable to -1 instead of zero.

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Calendar;
import java.util.Date;
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 RemoveExtraElement  extends AbstractTransformation{  /**  * @param args  * @throws FileNotFoundException   * @throws StreamTransformationException   */  @Override  public void transform(TransformationInput arg0, TransformationOutput arg1)  throws StreamTransformationException {  // TODO Auto-generated method stub  execute(arg0.getInputPayload().getInputStream(),arg1.getOutputPayload().getOutputStream());  }    public void execute(InputStream in, OutputStream out) throws StreamTransformationException    {    try    {    StringBuilder s = new StringBuilder();       byte[] b=new byte[in.available()];       if(in.read(b) >= 0) {        s = new StringBuilder(s.toString()+new String(b));       }              String header="\"NOTACTIVE\",\"STUD_ID\",\"FNAME\",\"LNAME\",\"MI\",\"GENDER\",\"JP_ID\",\"JP_DESC\",\"JOB_TITLE\",\"ORG_ID\"!##!\n";       s= new StringBuilder(s.insert(0,header));       java.util.Date date= new Date();       Calendar cal = Calendar.getInstance();       cal.setTime(date);              int month = cal.get(Calendar.MONTH)+1;             int year=cal.get(Calendar.YEAR);       int day=cal.get(Calendar.DAY_OF_MONTH);       cal.set(Calendar.YEAR,year);       cal.set(Calendar.MONTH,month-1);       cal.set(Calendar.DATE,day);       String runDate1=""+year+"/";       if(month<10)       {        runDate1=runDate1+"0";       }       runDate1=runDate1+month+"/";             String runDate2=runDate1+cal.getActualMaximum(Calendar.DAY_OF_MONTH);       runDate1+="01";             int len=s.length();       int count=0;       for(int i=0;i<len;++i)       {                  if(s.charAt(i)=='\n')                  {                 count++;                  }       }       String footer="\nTB TA TC "+runDate1+" "+runDate2+" "+count;       s=s.append(footer);       System.out.println(s);       out.write(s.toString().getBytes("UTF-8"));       in.close();       out.close();    }        catch(Exception e)    {    e.printStackTrace();    throw new StreamTransformationException(e.getMessage());    }    }
}

Regards

Anupam