musicalbum.java

国外的j2me播放器软件

package no.auc.one.portableplayer.lms;

import java.io.*;

public class MusicAlbum extends Album {
    // Optional
    private String artist = DidlObject.SERIALIZED_NULL_STRING_PROPERTY;
    private String genre = DidlObject.SERIALIZED_NULL_STRING_PROPERTY;
    private String producer = DidlObject.SERIALIZED_NULL_STRING_PROPERTY;
    private String albumArtURI = DidlObject.SERIALIZED_NULL_STRING_PROPERTY;
    private String toc = DidlObject.SERIALIZED_NULL_STRING_PROPERTY;
    
    private final static String CLASSTYPE = "object.container.album.musicAlbum";
    
    public String classType() {
        return CLASSTYPE;
    }

	public MusicAlbum(
		int id, 
		int parentId, 
		String title, 
		boolean restricted) 
	{
		super(id, parentId, title, restricted);
	}

    public MusicAlbum(DataInput di) throws IOException {
        super(di);

        artist = di.readUTF();
        genre = di.readUTF();
        producer = di.readUTF();
        albumArtURI = di.readUTF();
        toc = di.readUTF();
    }
    
    public void serialize(DataOutput dout) throws IOException {
        super.serialize(dout);

        dout.writeUTF(artist);
        dout.writeUTF(genre);
        dout.writeUTF(producer);
        dout.writeUTF(albumArtURI);
        dout.writeUTF(toc);
    }
    
    public void serializeXml(PrintStream ps) {
        super.serializeXml(ps);

        if (!artist.equals(DidlObject.SERIALIZED_NULL_STRING_PROPERTY)) {
            ps.print("<upnp:artist>");
            ps.print(artist);
            ps.print("</upnp:artist>");
        }

        if (!genre.equals(DidlObject.SERIALIZED_NULL_STRING_PROPERTY)) {
            ps.print("<upnp:genre>");
            ps.print(genre);
            ps.print("</upnp:genre>");
        }

        if (!producer.equals(DidlObject.SERIALIZED_NULL_STRING_PROPERTY)) {
            ps.print("<upnp:producer>");
            ps.print(producer);
            ps.print("</upnp:producer>");
        }

        if (!albumArtURI.equals(DidlObject.SERIALIZED_NULL_STRING_PROPERTY)) {
            ps.print("<upnp:albumArtURI>");
            ps.print(albumArtURI);
            ps.print("</upnp:albumArtURI>");
        }

        if (!toc.equals(DidlObject.SERIALIZED_NULL_STRING_PROPERTY)) {
            ps.print("<upnp:toc>");
            ps.print(toc);
            ps.print("</upnp:toc>");
        }
    }

	public void addContent(DidlObject o) {
		if (o instanceof MusicTrack || o instanceof MusicAlbum) {
			super.addContent(new Integer(o.id()));
		} else {
			throw new IllegalArgumentException(
				"Content of MusicAlbum must be either MusicTrack or MusicAlbum");
		}
	}
}