ObjectMap.java

package org.bar.foo;

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashMap;

public class ObjectMap {

	private ArrayList<String> lines;
	private HashMap<String, String> objects;

	public ObjectMap(String file) {
		readLinesFrom(file);
		parseObjects();
	}
	
	public String idFor(String key) {
		return objects.get(key);
	}

	private void parseObjects() {
		objects = new HashMap<String, String>();
		for (String	line : lines) {
			String key = line.split(":")[0].trim();
			String value = line.split(":")[1].trim();
			objects.put(key, value);
		}
	}

	private void readLinesFrom(String file) {
		FileInputStream fstream;
		lines = new ArrayList<String>();
		try {
			fstream = new FileInputStream(file);
			DataInputStream in = new DataInputStream(fstream);
			BufferedReader br = new BufferedReader(new InputStreamReader(in));
			String line;
			while ((line = br.readLine()) != null) {
				lines.add(line);
			}
			in.close();
		} catch (IOException e) {
			System.out.println("Error reading object map file " + file);
			e.printStackTrace();
		}
	}
}