christophedelory.playlist.pls
Class PLSProvider

java.lang.Object
  christophedelory.playlist.pls.PLSProvider

All Implemented Interfaces:

SpecificPlaylistProvider

public class PLSProvider
extends Object
implements SpecificPlaylistProvider

A text playlist similar to .ini (program settings) files. It normally contains only the location of the items in the playlist.
The syntax of a PLS file is the same syntax as a Windows .ini file and was probably chosen because of support in the Windows API. Metadata is included in the entry for each song, in a set of parallel arrays where FileN=[address of file]; TitleN=[title of song].

Version:

$Revision: 91 $

Author:

Christophe Delory

Constructor Summary

PLSProvider()

Method Summary

ContentType[]	getContentTypes() Returns a list of one or more content types representing the playlists compatible with this provider.
String	getId() Returns a unique string identifying the type of specific playlists handled by this provider.
SpecificPlaylist	readFrom(InputStream in, String encoding, Log logger) Reads a playlist from the specified input stream.
SpecificPlaylist	toSpecificPlaylist(Playlist playlist) Builds a specific representation of the given generic playlist.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PLSProvider

public PLSProvider()

Method Detail

getId

public String getId()

Description copied from interface: SpecificPlaylistProvider

Returns a unique string identifying the type of specific playlists handled by this provider.

Specified by:

getId in interface SpecificPlaylistProvider

Returns:

a playlist identifier. Shall not be null.

getContentTypes

public ContentType[] getContentTypes()

Description copied from interface: SpecificPlaylistProvider

Returns a list of one or more content types representing the playlists compatible with this provider. The list should be ordered from the most used / recommended to the least one.

Specified by:

getContentTypes in interface SpecificPlaylistProvider

Returns:

a list of content types. Shall not be null nor empty.

readFrom

public SpecificPlaylist readFrom(InputStream in,
                                 String encoding,
                                 Log logger)
                          throws Exception

Description copied from interface: SpecificPlaylistProvider

Reads a playlist from the specified input stream. When done, the stream remains open.

Specified by:

readFrom in interface SpecificPlaylistProvider

Parameters:

in - an input stream. Shall not be null.

encoding - the content encoding of the input resource, or null if not known.

logger - the logger that may be used during the unmarshalling process, if needed. Shall not be null.

Returns:

a new playlist instance, or null if the format has been recognized, but the playlist is malformed.

Throws:

NullPointerException - if in is null.

Exception - if any error occurs during the unmarshalling process.

See Also:

SpecificPlaylist.writeTo(java.io.OutputStream, java.lang.String), SpecificPlaylistFactory.readFrom(java.net.URL)

toSpecificPlaylist

public SpecificPlaylist toSpecificPlaylist(Playlist playlist)
                                    throws Exception

Description copied from interface: SpecificPlaylistProvider

Builds a specific representation of the given generic playlist.

Specified by:

toSpecificPlaylist in interface SpecificPlaylistProvider

Parameters:

playlist - a generic playlist. Shall not be null.

Returns:

a specific service playlist. Shall not be null.

Throws:

NullPointerException - if playlist is null.

Exception - if this service provider is unable to represent the input playlist.

See Also:

SpecificPlaylist.toPlaylist()