Collection.java

/**
* @author Hammed Abiola
*@date 24/02/2012
*/ 

/**
 * General csv collection to be subclassed by all Collections 
 * (EventsCollection, SettingsCollection, TasksCollection etc)
 */
 
 package calendar;


import java.util.ArrayList;
import javax.naming.directory.InvalidAttributesException;

public abstract class Collection<CSVSTR extends CsvStructure> {
    protected ArrayList<CSVSTR> m_data;
    
    /*
    *This method adds valid entries to the CSV
    */
    public void Add(CSVSTR elem) {
        m_data.add(elem);
    }
    
    /*
    *This method removes invalid entries 
    */
    public void Remove(int idx) throws InvalidAttributesException {
        if(idx < 0 || idx >= m_data.size()) {
            throw new InvalidAttributesException("Can't remove this element!");
        }
        m_data.remove(idx);
    }
    
    /*
    *This converts the arraylist string to CSV format
    */
    public String ToCSV() {
        String csv = "";
        for(int i = 0; i < m_data.size(); i++) {
            if(i > 0) {
                csv += System.getProperty("line.separator");
            }
            csv += m_data.get(i).ToCSV();
        }
        return csv;
    }

    public int size() {
    	return m_data.size();
    }
    
    public CSVSTR get(int i) {
    	return m_data.get(i);
    }
    
}