package com.run.behaviormodel.Iterator;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.Vector;


public class DataIterator implements Aggregate{
	private Vector data = new Vector();
	
	public DataIterator(String filename) {
		BufferedReader in = null;
		try {
			in = new BufferedReader(new FileReader(new File(filename)));
			String line = in.readLine();
			while(line !=null ){
				if(line.trim().length()>0){
					data.add(line);
				}
				line = in.readLine();
			}
		} catch (FileNotFoundException e) {
			System.out.println("cant find such file.");
		} catch (IOException e) {
			System.out.println("I/O error!");
		}finally{
			if(in != null){
				try {
					in.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		}
	}

	public Iterator CreateIterator() {
		return new VectorIterator(data);
	}
}