org.restlet.resource
Class ReadableRepresentation

java.lang.Object
  org.restlet.resource.Variant
      org.restlet.resource.Representation
          org.restlet.resource.ChannelRepresentation
              org.restlet.resource.ReadableRepresentation

public class ReadableRepresentation
extends ChannelRepresentation

Transient representation based on a readable NIO byte channel.

Author:

Jerome Louvel

Field Summary

Fields inherited from class org.restlet.resource.Representation

UNKNOWN_SIZE

Constructor Summary

ReadableRepresentation(ReadableByteChannel readableChannel, MediaType mediaType)
Constructor.

ReadableRepresentation(ReadableByteChannel channel, MediaType mediaType, long expectedSize)
Constructor.

Method Summary

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.
void	release() Closes and releases the readable channel.
void	setChannel(ReadableByteChannel channel) Sets the readable channel.
void	write(WritableByteChannel writableChannel) Writes the representation to a byte channel.

Methods inherited from class org.restlet.resource.ChannelRepresentation

getReader, getStream, write, write

Methods inherited from class org.restlet.resource.Representation

checkDigest, checkDigest, computeDigest, createEmpty, exhaust, getAvailableSize, getDigest, getDownloadName, getExpirationDate, getModificationDate, getRange, getSize, getTag, getText, isAvailable, isDownloadable, isTransient, setAvailable, setDigest, setDownloadable, setDownloadName, setExpirationDate, setModificationDate, setRange, setSize, setTag, setTransient

Methods inherited from class org.restlet.resource.Variant

getCharacterSet, getEncodings, getIdentifier, getLanguages, getMediaType, setCharacterSet, setEncodings, setIdentifier, setIdentifier, setLanguages, setMediaType

Methods inherited from class java.lang.Object

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

Constructor Detail

ReadableRepresentation

public ReadableRepresentation(ReadableByteChannel readableChannel,
                              MediaType mediaType)

Constructor.

Parameters:

readableChannel - The representation's channel.

mediaType - The representation's media type.

ReadableRepresentation

public ReadableRepresentation(ReadableByteChannel channel,
                              MediaType mediaType,
                              long expectedSize)

Constructor.

Parameters:

channel - The representation's channel.

mediaType - The representation's media type.

expectedSize - The expected 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.

Specified by:

getChannel in class Representation

Returns:

A channel with the representation's content.

Throws:

IOException

release

public void release()

Closes and releases the readable channel.

Overrides:

release in class Representation

setChannel

public void setChannel(ReadableByteChannel channel)

Sets the readable channel.

Parameters:

channel - The readable channel.

write

public void write(WritableByteChannel writableChannel)
           throws IOException

Description copied from class: Representation

Writes the representation to a byte channel. This method is ensured to write the full content for each invocation unless it is a transient representation, in which case an exception is thrown.

Specified by:

write in class Representation

Parameters:

writableChannel - A writable byte channel.

Throws:

IOException