musicprofile.java

We intend to develop a wifi enabled p2p file sharing system on a linux platform using jxta and java.

package edu.uiuc.cs.cs327.linuxwifi.services;



import java.util.Vector.*;
import java.util.Vector;
import java.awt.*;
import de.ueberdosis.mp3info.*;
import de.ueberdosis.util.*;
import java.util.Vector.*;
import java.util.Vector;
import java.io.*;
 import  org.w3c.dom.*;   
 import org.apache.xerces.dom.TextImpl;   
 import org.apache.xerces.parsers.DOMParser;   
 import  org.apache.xerces.dom.DocumentImpl;   
 import  org.apache.xerces.dom.DOMImplementationImpl;   
 import  org.w3c.dom.Document;   
 import  org.apache.xml.serialize.OutputFormat;   
 import  org.apache.xml.serialize.Serializer;   
 import  org.apache.xml.serialize.SerializerFactory;   
 import  org.apache.xml.serialize.XMLSerializer; 

    

    /**

     * Constructs a configuration information class that holds all 

     * parameters relating to the users' preferences.

     */    

    



public class MusicProfile implements Serializable{



	private static final boolean DEBUG = false;



    // File downloading restriction preferences

	private int maxFileSize = 0;
	private String artist = null;
	private String song = null;
	private String genre = null;
    private String fileFormat = null;
	private id3 myFile = null;
    

    public MusicProfile() {  	

        

        // Read all configuration information from a stored file and populate the above fields

    }

    
   /* Read all configuration information from a stored file and populate the above fields
    * @param fileURL path to mp3 file
    */
    public MusicProfile(String fileURL) {
		try{
		myFile = new id3(fileURL);
		}catch (Exception e) {
		       // could not instanciate the group, print the stack and exit
		       System.out.println("fatal error : can not open mp3 file");
		       e.printStackTrace();
		       System.exit(-1);
       }
		song = myFile.getTitle().toLowerCase();
		artist = myFile.getArtist().toLowerCase();
        genre = myFile.getGenre().toLowerCase();
    }
    
public String Display() {
	String str;
	String sep = " | ";
  	str = artist + sep + song + sep + genre + sep + fileFormat + sep + Integer.toString(maxFileSize/1024) + "k";
  	return str;
}
    /* User inputs all configuration information for search purposes
    * @param
    */
    public MusicProfile(String aArtist,  String aSong,  String aGenre) {
        setArtist(aArtist);
        setSong(aSong);
        setGenre(aGenre);
       }
    
    

    /**

     * Gets a string String containing all the users' preferred file formats.

     * @return a string String of fileformats (specifying filename extensions) such as:

     * mp3 or wav

     */

    

	public String getFileFormat()

	{

	    return(fileFormat);

	}

	

    /**

     * Gets the maximum file size of the files to be downloaded

     * @return an integer representing the file size in bytes

     */

    

	public int getMaxFileSize()

	{

	    return(maxFileSize);

	}

	

    /**

     * Gets a string String containing all the users' preferred file artists.

     * @return a string String of artist names such as:

     * "Jay Z" and "jennifer lopez"

     */

    

	public String getArtist()

	{

	    return(artist);

	}	

	

	/**

     * Gets a string String containing all the users' preferred songs.

     * @return a string String of song names such as:

     * "I do" and "U Got It Bad"

     */

    

	public String getSong()

	{

	    return(song);

	}	

	

	/**

     * Gets a string String containing all the users' preferred genre's.

     * @return a string String of genre names

     * "pop" and "rock"

     */

    

	public String getGenre()

	{

	    return(genre);

	}

	



	

	

    /**

     * Sets a string String containing all the users' preferred file formats.

     * @param a string of fileformat (specifying filename extensions) such as:

     * mp3 or wav

     */

    

	public void setFileFormat(String a)

	{

	    fileFormat = a;

	}

	

    /**

     * Sets the maximum file size of the files to be downloaded

     * @param an integer representing the file size in bytes

     */

    

	public void setMaxFileSize(int a)

	{

	    maxFileSize=a;

	}

         public void setMaxFileSize(String a)   
         {   
                 int nSize = 0;   
                 try   
                 {   
                         nSize = Integer.parseInt(a);   
                 }   
                 catch (NumberFormatException ex) {   
                         ;   
                 }   
                 maxFileSize= nSize; 
	}
	

    /**

     * Sets a string String containing all the users' preferred file artists.

     * @param a string String of artist names such as:

     * "Jay Z" and "jennifer lopez"

     */

    

	public void setArtist(String a)

	{

	    artist = a;

	}	

	

	/**

     * Sets a string String containing all the users' preferred songs.

     * @param a string String of song names such as:

     * "I do" and "U Got It Bad"

     */

    

	public void setSong(String a)

	{

	    song = a;

	}	

	

	/**

     * Sets a string String containing all the users' preferred genre's.

     * @param a string String of genre names

     * "pop" and "rock"

     */

    

	public void setGenre(String a)

	{

	    genre =a;

	}



   /**         
      * Sets the maximum uploads per hour allowed by this user   
      * @param an integer representing the number of uploads in one hour   
      */   
    
    
         public Element xmlNode(Document doc)   
         {   
                 try {   
                         int i;   
                         Element root = doc.createElement("musicprofile");   
                         Element elem = null;   
			 elem = doc.createElement("maxfilesize");     
                         elem.appendChild(doc.createTextNode(Integer.toString(maxFileSize)));   
                         root.appendChild(elem); 

    			 elem = doc.createElement("artist");
                         elem.appendChild(doc.createTextNode(artist));   
                         root.appendChild(elem);   
    
                         elem = doc.createElement("song");
                         elem.appendChild(doc.createTextNode(song));   
                         root.appendChild(elem);   
    
                         elem = doc.createElement("genre");    
                         elem.appendChild(doc.createTextNode(genre));   
                         root.appendChild(elem);   
    
                         elem = doc.createElement("fileformat");   
                         elem.appendChild(doc.createTextNode(fileFormat));   
                         root.appendChild(elem);   
    
                         return root;  
                 }       
                 catch(Exception ex) {       
                         DebugOut("ERROR: creating XML"); 
                         ex.printStackTrace();         
                 }       
                 return null;       
         }


	public void setFromXmlNode(Element root) {
		setSong(getElementValue(root, "song"));
		setArtist(getElementValue(root, "artist"));
		setGenre(getElementValue(root, "genre"));
		setFileFormat(getElementValue(root, "fileformat"));
		setMaxFileSize(getElementValue(root, "maxfilesize"));
	}

	private String getElementValue(Element root, String sTag) {
		String sVal = "";
		NodeList elements = root.getElementsByTagName(sTag);
		if (elements != null) {
			if (elements.getLength() > 0) {
				Element element = (Element)elements.item(0);
				Node textNode = element.getFirstChild();
				if (textNode != null)
					sVal = textNode.getNodeValue();
			}
		}
		return sVal;
	}

	private void DebugOut(String sStr)
	{
		if (DEBUG)
			System.out.println(sStr);
	}


	

    /**

     * Sets the maximum uploads per hour allowed by this user

     * @param an integer representing the number of uploads in one hour

     */


    /**Copies one MusicProfile object to another
     *@param a MusicProfile object
     */
    public void copy(MusicProfile mp){
         artist = mp.getArtist();
         song = mp.getSong();
         genre = mp.getGenre();
    }
    
    public void print(){
        System.out.println("Song: " + song);
        System.out.println("Artist: " + artist);
        System.out.println("Genre:  " + genre);
    }


	

}