org.restlet.representation

Class OutputRepresentation

java.lang.Object

org.restlet.representation.Variant

org.restlet.representation.RepresentationInfo

org.restlet.representation.Representation

org.restlet.representation.StreamRepresentation

org.restlet.representation.OutputRepresentation

Direct Known Subclasses:

ObjectRepresentation

public abstract class OutputRepresentation
extends StreamRepresentation

Representation based on a BIO output stream. This class is a good basis to write your own representations, especially for the dynamic and large ones.

For this you just need to create a subclass and override the abstract Representation.write(OutputStream) method. This method will later be called back by the connectors when the actual representation's content is needed.

Author:

Jerome Louvel

Field Summary

Fields inherited from class org.restlet.representation.Representation

UNKNOWN_SIZE

Constructor Summary

Constructors

Constructor and Description
OutputRepresentation(MediaType mediaType) Constructor.
OutputRepresentation(MediaType mediaType, long expectedSize) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
ReadableByteChannel	getChannel() Returns a channel with the representation's content. If it is supported by a file, a read-only instance of FileChannel is returned. This method is ensured to return a fresh channel for each invocation unless it is a transient representation, in which case null is returned.
InputStream	getStream() Returns a stream with the representation's content.

Methods inherited from class org.restlet.representation.StreamRepresentation

getReader, write, write

Methods inherited from class org.restlet.representation.Representation

append, exhaust, getAvailableSize, getDigest, getDisposition, getExpirationDate, getRange, getRegistration, getSize, getText, hasKnownSize, isAvailable, isEmpty, isSelectable, isTransient, release, setAvailable, setDigest, setDisposition, setExpirationDate, setListener, setRange, setSize, setTransient, write

Methods inherited from class org.restlet.representation.RepresentationInfo

getModificationDate, getTag, setModificationDate, setTag

Methods inherited from class org.restlet.representation.Variant

createClientInfo, equals, getCharacterSet, getEncodings, getLanguages, getLocationRef, getMediaType, includes, isCompatible, setCharacterSet, setEncodings, setLanguages, setLocationRef, setLocationRef, setMediaType, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

OutputRepresentation

public OutputRepresentation(MediaType mediaType)

Constructor.

Parameters:

mediaType - The representation's mediaType.

OutputRepresentation

public OutputRepresentation(MediaType mediaType,
                    long expectedSize)

Constructor.

Parameters:

mediaType - The representation's mediaType.

expectedSize - The expected input stream size.

Method Detail

getChannel

public ReadableByteChannel getChannel()
                               throws IOException

Description copied from class: Representation

Returns a channel with the representation's content.
If it is supported by a file, a read-only instance of FileChannel is returned.
This method is ensured to return a fresh channel for each invocation unless it is a transient representation, in which case null is returned.

Overrides:

getChannel in class StreamRepresentation

Returns:

A channel with the representation's content.

Throws:

IOException

getStream

public InputStream getStream()
                      throws IOException

Returns a stream with the representation's content. Internally, it uses a writer thread and a pipe stream.

Specified by:

getStream in class Representation

Returns:

A stream with the representation's content.

Throws:

IOException