Genralizing the data export script

Question

hi , i have a data export script which is a busienss rule , now i can genralize the version, year, scenario and everything but the problem is that the export file that is being created has the fixed name , each time i run that rule the data export file will be same , is it possible to somehow genralize that export file name as well.

Answer 1

hi here is some java which i have used earlier try to modify ...it saves with current date and time and even i used SED all this in UNIX
JAVA
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileFilter;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.InputStreamReader;
import java.io.Writer;
import java.util.Calendar;
import java.util.StringTokenizer;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
* @author KVC
public class MigratorUtil {
     public static File getLatestFile(String dir){
          File directory = new File(dir);
          File choice = null;
          if(directory.isDirectory()){
               File[] files = directory.listFiles(new FileFilter() {
                    public boolean accept(File file) {
                         return file.isFile();
               long lastMod = Long.MIN_VALUE;
               int fileSize = files.length;
               for(int i=0;i<fileSize;i++){
                    File file = files;
                    if(file.lastModified() >lastMod){
                         choice = file;
                         lastMod = file.lastModified();
          }else{
               System.out.println(dir+" is not a directory");
          return choice;
     public static boolean processFile(File latestFile) throws FileNotFoundException,Exception{
          FileInputStream fileStream = new FileInputStream(latestFile);
          DataInputStream in = new DataInputStream(fileStream);
          BufferedReader br = new BufferedReader(new InputStreamReader(in));
          String strLine;
          int lineCount = 0;
          StringBuffer contents = new StringBuffer();
          while((strLine = br.readLine())!=null){
               if(lineCount == 0){ //first line
                    String header = System.getProperty("header");
                    if(header == null){
                         header = "HEADERHYPERION";
                    contents.append(header).append(getPreviousBusinessDate()).append(getDateFormat()).append("\n");
               }else{
                    contents.append(strLine).append("\n");
               lineCount++;
          //footer
          if(lineCount != 0){ //last line
               String footer = System.getProperty("header");
               if(footer == null){
                    footer = "TRAILER";
               contents.append(footer).append(lineCount-1); // linecount - 1 to remove the first line count
          // wtite the file
          String fileName = latestFile.getAbsoluteFile().toString();
          String outputFile = fileName.substring(0,fileName.indexOf("."))+".out";
          System.out.println(" output file is ..."+outputFile);
          File output = new File(outputFile);
          Writer oWriter = new BufferedWriter(new FileWriter(output));
          try{
               oWriter.write(contents.toString());
//               oWriter.write(getProcessedLine(contents.toString()));
          }finally{
               oWriter.close();
          return true;
     public static String getDateFormat(){
          Calendar calendar = Calendar.getInstance();
          int currentMonth = calendar.get(Calendar.MONTH);
          return calendar.get(Calendar.YEAR)+"-"+(currentMonth>9?""+currentMonth:"0"+currentMonth)+"-01";
     public static String getPreviousBusinessDate(){
          Calendar calendar = Calendar.getInstance();
          int currentMonth = calendar.get(Calendar.MONTH);
          calendar.set(Calendar.MONTH, currentMonth-1);
          int lastDate = calendar.getActualMaximum(Calendar.DATE);
          calendar.set(Calendar.DATE, lastDate);
          int lastDay = calendar.get(Calendar.DAY_OF_WEEK);
          if(lastDay == 1 ){
               lastDate = lastDate - 2; // for sunday
          }else if(lastDay == 7){
               lastDate = lastDate - 1; // for saturday
          return calendar.get(Calendar.YEAR)+"-"+(currentMonth>9?""+currentMonth:"0"+currentMonth)+"-"+lastDate;
     private static String getProcessedLine(String line){
          String seperator = System.getProperty("inputseperator");
          String out_seperator = System.getProperty("outputseperator");
          if(seperator == null){
               seperator = "!";
          if(out_seperator == null){
               out_seperator = "|";
          StringTokenizer tokenizer = new StringTokenizer(line,seperator);
          StringBuffer descContent = new StringBuffer();
          StringBuffer content = new StringBuffer();
          while(tokenizer.hasMoreTokens()){
               String element = tokenizer.nextToken();
               if(matchPattern(element)){
                    System.out.println("Criteria matched..."+element+ "So eat the next elemet");
                    descContent.append(tokenizer.nextElement()).append(out_seperator);
               }else{
                    content.append(element).append(out_seperator);
          content.append(descContent);
          String output = content.toString();
          return output.substring(0, output.length()-1);
     private static boolean matchPattern(String line){
          String regex = "\\d{1,2}.\\d{1,2}.\\d{1,2}";
          Pattern pattern = Pattern.compile(regex);
          Matcher m = pattern.matcher(line);
          return (m.matches());
     public static void main(String a[]){
          System.out.println(getPreviousBusinessDate());
SED
for file to
#!/bin/bash
#Replace tab with pipe
cat $1 | sed 's/\t/|/g' > /tmp/test.out
line_cnt=`wc -l $1 | awk '{print expr $1-2}'`
if [ `uname -s` = 'SunOS' ]; then
set -A months 0 1 2 3 4 5 6 7 8 9 10 11 12
else
months=(0 1 2 3 4 5 6 7 8 9 10 11 12)
fi
here it takes last month date similarly u can change up to ur requirements
YEAR="`date +%Y`"
MONTH="${months[`date +%m-1`]}"
TODAY_STR="`date +%Y`-${months[`date +%m`]}-01"
DAY="`cal $MONTH $YEAR | awk '{ if(NF>1) a=$NF ; if (NF==7) a=$6}END{print a}'`"
LAST_MNTH="`date +%Y`-${months[`date +%m-1`]}-$DAY"
cat /tmp/test.out | sed -e "s/HEADERHYPERION/HEADERHYPERION${LAST_MNTH}${TODAY_STR}/" > /tmp/test_tmp.out
cat /tmp/test_tmp.out | sed -e "s/TRAILER/TRAILER${line_cnt}/" > $2