WrapperRepresentation (Restlet core org.restlet 2.4.0

java.lang.Object
- org.restlet.representation.Variant
- - org.restlet.representation.RepresentationInfo
  - - org.restlet.representation.Representation
    - - org.restlet.util.WrapperRepresentation

Direct Known Subclasses:

BufferingRepresentation, DecodeRepresentation, DigesterRepresentation, EncodeRepresentation, RangeRepresentation
```
public class WrapperRepresentation
extends Representation
```
Representation wrapper. Useful for application developer who need to enrich the representation with application related properties and behavior.

Author:

Jerome Louvel

See Also:

The decorator (aka wrapper) pattern

Field Summary
- Fields inherited from class org.restlet.representation.Representation
  UNKNOWN_SIZE

Constructor Summary

Constructors
Constructor and Description

WrapperRepresentation(Representation wrappedRepresentation)
Constructor.

Constructors
Constructor and Description
`WrapperRepresentation(Representation wrappedRepresentation)` Constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`long`	`exhaust()` Exhaust the content of the representation by reading it and silently discarding anything read.
`long`	`getAvailableSize()` Returns the size effectively available.
`java.nio.channels.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.
`CharacterSet`	`getCharacterSet()` Returns the character set or null if not applicable.
`Digest`	`getDigest()` Returns the representation digest if any. Note that when used with HTTP connectors, this property maps to the "Content-MD5" header.
`Disposition`	`getDisposition()` Returns the disposition characteristics of the representation.
`java.util.List<Encoding>`	`getEncodings()` Returns the modifiable list of encodings applied to the entity-body.
`java.util.Date`	`getExpirationDate()` Returns the future date when this representation expire.
`java.util.List<Language>`	`getLanguages()` Returns the modifiable list of languages.
`Reference`	`getLocationRef()` Returns an optional location reference.
`MediaType`	`getMediaType()` Returns the media type. Note that when used with HTTP connectors, this property maps to the "Content-Type" header.
`java.util.Date`	`getModificationDate()` Returns the last date when this representation was modified.
`Range`	`getRange()` Returns the range where in the full content the partial content available should be applied. Note that when used with HTTP connectors, this property maps to the "Content-Range" header.
`java.io.Reader`	`getReader()` Returns a characters reader with the representation's content.
`SelectionRegistration`	`getRegistration()` Returns the NIO registration of the related channel with its selector.
`long`	`getSize()` Returns the total size in bytes if known, UNKNOWN_SIZE (-1) otherwise.
`java.io.InputStream`	`getStream()` Returns a stream with the representation's content.
`Tag`	`getTag()` Returns the tag. Note that when used with HTTP connectors, this property maps to the "ETag" header.
`java.lang.String`	`getText()` Converts the representation to a string value.
`Representation`	`getWrappedRepresentation()` Returns the wrapped representation.
`boolean`	`isAvailable()` Indicates if some fresh content is potentially available, without having to actually call one of the content manipulation method like getStream() that would actually consume it.
`boolean`	`isSelectable()` Indicates if the representation content supports NIO selection.
`boolean`	`isTransient()` Indicates if the representation's content is transient, which means that it can be obtained only once.
`void`	`release()` Releases the representation and all associated objects like streams, channels or files which are used to produce its content, transient or not.
`void`	`setAvailable(boolean isAvailable)` Indicates if some fresh content is available.
`void`	`setCharacterSet(CharacterSet characterSet)` Sets the character set or null if not applicable. Note that when used with HTTP connectors, this property maps to the "Content-Type" header.
`void`	`setDigest(Digest digest)` Sets the representation digest. Note that when used with HTTP connectors, this property maps to the "Content-MD5" header.
`void`	`setDisposition(Disposition disposition)` Sets the disposition characteristics of the representation.
`void`	`setEncodings(java.util.List<Encoding> encodings)` Sets the list of encodings applied to the entity-body. Note that when used with HTTP connectors, this property maps to the "Content-Encoding" header.
`void`	`setExpirationDate(java.util.Date expirationDate)` Sets the future date when this representation expire.
`void`	`setLanguages(java.util.List<Language> languages)` Sets the list of languages. Note that when used with HTTP connectors, this property maps to the "Content-Language" header.
`void`	`setLocationRef(Reference location)` Sets the optional identifier.
`void`	`setLocationRef(java.lang.String locationUri)` Sets the identifier from a URI string. Note that when used with HTTP connectors, this property maps to the "Content-Location" header.
`void`	`setMediaType(MediaType mediaType)` Sets the media type. Note that when used with HTTP connectors, this property maps to the "Content-Type" header.
`void`	`setModificationDate(java.util.Date modificationDate)` Sets the last date when this representation was modified.
`void`	`setRange(Range range)` Sets the range where in the full content the partial content available should be applied. Note that when used with HTTP connectors, this property maps to the "Content-Range" header.
`void`	`setSize(long expectedSize)` Sets the expected size in bytes if known, -1 otherwise.
`void`	`setTag(Tag tag)` Sets the tag. Note that when used with HTTP connectors, this property maps to the "ETag" header.
`void`	`setTransient(boolean isTransient)` Indicates if the representation's content is transient.
`void`	`write(java.io.OutputStream outputStream)` Writes the representation to a byte stream.
`void`	`write(java.nio.channels.WritableByteChannel writableChannel)` Writes the representation to a byte channel.
`void`	`write(java.io.Writer writer)` Writes the representation to a characters writer.

Methods inherited from class org.restlet.representation.Representation
append, hasKnownSize, isEmpty, setListener

Methods inherited from class org.restlet.representation.Variant
createClientInfo, equals, hashCode, includes, isCompatible, toString

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - WrapperRepresentation
```
public WrapperRepresentation(Representation wrappedRepresentation)
```
    Constructor.
    
    Parameters:
    
    wrappedRepresentation - The wrapped representation.
- Method Detail
  - exhaust
```
public long exhaust()
             throws java.io.IOException
```
    Description copied from class: Representation
    
    Exhaust the content of the representation by reading it and silently discarding anything read. By default, it relies on Representation.getStream() and closes the retrieved stream in the end.
    
    Overrides:
    
    exhaust in class Representation
    
    Returns:
    
    The number of bytes consumed or -1 if unknown.
    
    Throws:
    
    java.io.IOException
  - getAvailableSize
```
public long getAvailableSize()
```
    Description copied from class: Representation
    
    Returns the size effectively available. This returns the same value as Representation.getSize() if no range is defined, otherwise it returns the size of the range using Range.getSize().
    
    Overrides:
    
    getAvailableSize in class Representation
    
    Returns:
    
    The available size.
  - getChannel
```
public java.nio.channels.ReadableByteChannel getChannel()
                                                 throws java.io.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:
    
    java.io.IOException
  - getCharacterSet
```
public CharacterSet getCharacterSet()
```
    Description copied from class: Variant
    
    Returns the character set or null if not applicable. Note that when used with HTTP connectors, this property maps to the "Content-Type" header.
    
    Overrides:
    
    getCharacterSet in class Variant
    
    Returns:
    
    The character set or null if not applicable.
  - getDigest
```
public Digest getDigest()
```
    Description copied from class: Representation
    
    Returns the representation digest if any.
    
    Note that when used with HTTP connectors, this property maps to the "Content-MD5" header.
    
    Overrides:
    
    getDigest in class Representation
    
    Returns:
    
    The representation digest or null.
  - getDisposition
```
public Disposition getDisposition()
```
    Description copied from class: Representation
    
    Returns the disposition characteristics of the representation.
    
    Overrides:
    
    getDisposition in class Representation
    
    Returns:
    
    The disposition characteristics of the representation.
  - getEncodings
```
public java.util.List<Encoding> getEncodings()
```
    Description copied from class: Variant
    
    Returns the modifiable list of encodings applied to the entity-body. Creates a new instance if no one has been set. An "IllegalArgumentException" exception is thrown when adding a null encoding to this list.
    
    Note that when used with HTTP connectors, this property maps to the "Content-Encoding" header.
    
    Overrides:
    
    getEncodings in class Variant
    
    Returns:
    
    The list of encodings applied to the entity-body.
  - getExpirationDate
```
public java.util.Date getExpirationDate()
```
    Description copied from class: Representation
    
    Returns the future date when this representation expire. If this information is not known, returns null.
    
    Note that when used with HTTP connectors, this property maps to the "Expires" header.
    
    Overrides:
    
    getExpirationDate in class Representation
    
    Returns:
    
    The expiration date.
  - getLanguages
```
public java.util.List<Language> getLanguages()
```
    Description copied from class: Variant
    
    Returns the modifiable list of languages. Creates a new instance if no one has been set. An "IllegalArgumentException" exception is thrown when adding a null language to this list.
    
    Note that when used with HTTP connectors, this property maps to the "Content-Language" header.
    
    Overrides:
    
    getLanguages in class Variant
    
    Returns:
    
    The list of languages.
  - getLocationRef
```
public Reference getLocationRef()
```
    Description copied from class: Variant
    
    Returns an optional location reference. This is useful when the representation is accessible from a location separate from the representation's resource URI, for example when content negotiation occurs.
    
    Note that when used with HTTP connectors, this property maps to the "Content-Location" header.
    
    Overrides:
    
    getLocationRef in class Variant
    
    Returns:
    
    The identifier.
  - getMediaType
```
public MediaType getMediaType()
```
    Description copied from class: Variant
    
    Returns the media type.
    
    Note that when used with HTTP connectors, this property maps to the "Content-Type" header.
    
    Overrides:
    
    getMediaType in class Variant
    
    Returns:
    
    The media type.
  - getModificationDate
```
public java.util.Date getModificationDate()
```
    Description copied from class: RepresentationInfo
    
    Returns the last date when this representation was modified. If this information is not known, returns null.
    
    Note that when used with HTTP connectors, this property maps to the "Last-Modified" header.
    
    Overrides:
    
    getModificationDate in class RepresentationInfo
    
    Returns:
    
    The modification date.
  - getRange
```
public Range getRange()
```
    Description copied from class: Representation
    
    Returns the range where in the full content the partial content available should be applied.
    
    Note that when used with HTTP connectors, this property maps to the "Content-Range" header.
    
    Overrides:
    
    getRange in class Representation
    
    Returns:
    
    The content range or null if the full content is available.
  - getReader
```
public java.io.Reader getReader()
                         throws java.io.IOException
```
    Description copied from class: Representation
    
    Returns a characters reader with the representation's content. This method is ensured to return a fresh reader for each invocation unless it is a transient representation, in which case null is returned. If the representation has no character set defined, the system's default one will be used.
    
    Specified by:
    
    getReader in class Representation
    
    Returns:
    
    A reader with the representation's content.
    
    Throws:
    
    java.io.IOException
  - getSize
```
public long getSize()
```
    Description copied from class: Representation
    
    Returns the total size in bytes if known, UNKNOWN_SIZE (-1) otherwise. When ranges are used, this might not be the actual size available. For this purpose, you can use the Representation.getAvailableSize() method.
    
    Note that when used with HTTP connectors, this property maps to the "Content-Length" header.
    
    Overrides:
    
    getSize in class Representation
    
    Returns:
    
    The size in bytes if known, UNKNOWN_SIZE (-1) otherwise.
    
    See Also:
    
    Representation.isEmpty()
  - getStream
```
public java.io.InputStream getStream()
                              throws java.io.IOException
```
    Description copied from class: Representation
    
    Returns a stream with the representation's content. This method is ensured to return a fresh stream for each invocation unless it is a transient representation, in which case null is returned.
    
    Specified by:
    
    getStream in class Representation
    
    Returns:
    
    A stream with the representation's content.
    
    Throws:
    
    java.io.IOException
  - getTag
```
public Tag getTag()
```
    Description copied from class: RepresentationInfo
    
    Returns the tag.
    
    Note that when used with HTTP connectors, this property maps to the "ETag" header.
    
    Overrides:
    
    getTag in class RepresentationInfo
    
    Returns:
    
    The tag.
  - getText
```
public java.lang.String getText()
                         throws java.io.IOException
```
    Description copied from class: Representation
    
    Converts the representation to a string value. Be careful when using this method as the conversion of large content to a string fully stored in memory can result in OutOfMemoryErrors being thrown.
    
    Overrides:
    
    getText in class Representation
    
    Returns:
    
    The representation as a string value.
    
    Throws:
    
    java.io.IOException
  - getWrappedRepresentation
```
public Representation getWrappedRepresentation()
```
    Returns the wrapped representation.
    
    Returns:
    
    The wrapped representation.
  - isAvailable
```
public boolean isAvailable()
```
    Description copied from class: Representation
    
    Indicates if some fresh content is potentially available, without having to actually call one of the content manipulation method like getStream() that would actually consume it. Note that when the size of a representation is 0 is a not considered available. However, sometimes the size isn't known until a read attempt is made, so availability doesn't guarantee a non empty content.
    
    This is especially useful for transient representation whose content can only be accessed once and also when the size of the representation is not known in advance.
    
    Overrides:
    
    isAvailable in class Representation
    
    Returns:
    
    True if some fresh content is available.
  - isSelectable
```
public boolean isSelectable()
```
    Description copied from class: Representation
    
    Indicates if the representation content supports NIO selection. In this case, the ext.nio.internal.ConnectionController method can be called to be notified when new content is ready for reading.
    
    Overrides:
    
    isSelectable in class Representation
    
    Returns:
    
    True if the representation content supports NIO selection.
    
    See Also:
    
    ext.nio.internal.ConnectionController
  - isTransient
```
public boolean isTransient()
```
    Description copied from class: Representation
    
    Indicates if the representation's content is transient, which means that it can be obtained only once. This is often the case with representations transmitted via network sockets for example. In such case, if you need to read the content several times, you need to cache it first, for example into memory or into a file.
    
    Overrides:
    
    isTransient in class Representation
    
    Returns:
    
    True if the representation's content is transient.
  - getRegistration
```
public SelectionRegistration getRegistration()
                                      throws java.io.IOException
```
    Description copied from class: Representation
    
    Returns the NIO registration of the related channel with its selector. You can modify this registration to be called back when some readable content is available. Note that the listener will keep being called back until you suspend or cancel the registration returned by this method.
    
    Overrides:
    
    getRegistration in class Representation
    
    Returns:
    
    The NIO registration.
    
    Throws:
    
    java.io.IOException
    
    See Also:
    
    Representation.isSelectable()
  - release
```
public void release()
```
    Description copied from class: Representation
    
    Releases the representation and all associated objects like streams, channels or files which are used to produce its content, transient or not. This method must be systematically called when the representation is no longer intended to be used. The framework automatically calls back this method via its connectors on the server-side when sending responses with an entity and on the client-side when sending a request with an entity. By default, it calls the Representation.setAvailable(boolean) method with "false" as a value.
    
    Note that for transient socket-bound representations, calling this method after consuming the whole content shouldn't prevent the reuse of underlying socket via persistent connections for example. However, if the content hasn't been read, or has been partially read, the impact should be to discard the remaining content and to close the underlying connections.
    
    Therefore, if you are not interested in the content, or in the remaining content, you should first call the Representation.exhaust() method or if this could be too costly, you should instead explicitly abort the parent request and the underlying connections using the Request.abort() method or a shortcut one like ServerResource.abort() or Response.abort().
    
    Overrides:
    
    release in class Representation
  - setAvailable
```
public void setAvailable(boolean isAvailable)
```
    Description copied from class: Representation
    
    Indicates if some fresh content is available.
    
    Overrides:
    
    setAvailable in class Representation
    
    Parameters:
    
    isAvailable - True if some fresh content is available.
  - setCharacterSet
```
public void setCharacterSet(CharacterSet characterSet)
```
    Description copied from class: Variant
    
    Sets the character set or null if not applicable.
    
    Note that when used with HTTP connectors, this property maps to the "Content-Type" header.
    
    Overrides:
    
    setCharacterSet in class Variant
    
    Parameters:
    
    characterSet - The character set or null if not applicable.
  - setDigest
```
public void setDigest(Digest digest)
```
    Description copied from class: Representation
    
    Sets the representation digest.
    
    Note that when used with HTTP connectors, this property maps to the "Content-MD5" header.
    
    Overrides:
    
    setDigest in class Representation
    
    Parameters:
    
    digest - The representation digest.
  - setDisposition
```
public void setDisposition(Disposition disposition)
```
    Description copied from class: Representation
    
    Sets the disposition characteristics of the representation.
    
    Overrides:
    
    setDisposition in class Representation
    
    Parameters:
    
    disposition - The disposition characteristics of the representation.
  - setEncodings
```
public void setEncodings(java.util.List<Encoding> encodings)
```
    Description copied from class: Variant
    
    Sets the list of encodings applied to the entity-body.
    
    Note that when used with HTTP connectors, this property maps to the "Content-Encoding" header.
    
    Overrides:
    
    setEncodings in class Variant
    
    Parameters:
    
    encodings - The list of encodings applied to the entity-body.
  - setExpirationDate
```
public void setExpirationDate(java.util.Date expirationDate)
```
    Description copied from class: Representation
    
    Sets the future date when this representation expire. If this information is not known, pass null.
    
    Note that when used with HTTP connectors, this property maps to the "Expires" header.
    
    Overrides:
    
    setExpirationDate in class Representation
    
    Parameters:
    
    expirationDate - The expiration date.
  - setLanguages
```
public void setLanguages(java.util.List<Language> languages)
```
    Description copied from class: Variant
    
    Sets the list of languages.
    
    Note that when used with HTTP connectors, this property maps to the "Content-Language" header.
    
    Overrides:
    
    setLanguages in class Variant
    
    Parameters:
    
    languages - The list of languages.
  - setLocationRef
```
public void setLocationRef(Reference location)
```
    Description copied from class: Variant
    
    Sets the optional identifier. This is useful when the representation is accessible from a location separate from the representation's resource URI, for example when content negotiation occurs.
    
    Note that when used with HTTP connectors, this property maps to the "Content-Location" header.
    
    Overrides:
    
    setLocationRef in class Variant
    
    Parameters:
    
    location - The location reference.
  - setLocationRef
```
public void setLocationRef(java.lang.String locationUri)
```
    Description copied from class: Variant
    
    Sets the identifier from a URI string.
    
    Note that when used with HTTP connectors, this property maps to the "Content-Location" header.
    
    Overrides:
    
    setLocationRef in class Variant
    
    Parameters:
    
    locationUri - The location URI to parse.
  - setMediaType
```
public void setMediaType(MediaType mediaType)
```
    Description copied from class: Variant
    
    Sets the media type.
    
    Note that when used with HTTP connectors, this property maps to the "Content-Type" header.
    
    Overrides:
    
    setMediaType in class Variant
    
    Parameters:
    
    mediaType - The media type.
  - setModificationDate
```
public void setModificationDate(java.util.Date modificationDate)
```
    Description copied from class: RepresentationInfo
    
    Sets the last date when this representation was modified. If this information is not known, pass null.
    
    Note that when used with HTTP connectors, this property maps to the "Last-Modified" header.
    
    Overrides:
    
    setModificationDate in class RepresentationInfo
    
    Parameters:
    
    modificationDate - The modification date.
  - setRange
```
public void setRange(Range range)
```
    Description copied from class: Representation
    
    Sets the range where in the full content the partial content available should be applied.
    
    Note that when used with HTTP connectors, this property maps to the "Content-Range" header.
    
    Overrides:
    
    setRange in class Representation
    
    Parameters:
    
    range - The content range.
  - setSize
```
public void setSize(long expectedSize)
```
    Description copied from class: Representation
    
    Sets the expected size in bytes if known, -1 otherwise. For this purpose, you can use the Representation.getAvailableSize() method.
    
    Note that when used with HTTP connectors, this property maps to the "Content-Length" header.
    
    Overrides:
    
    setSize in class Representation
    
    Parameters:
    
    expectedSize - The expected size in bytes if known, -1 otherwise.
  - setTag
```
public void setTag(Tag tag)
```
    Description copied from class: RepresentationInfo
    
    Sets the tag.
    
    Note that when used with HTTP connectors, this property maps to the "ETag" header.
    
    Overrides:
    
    setTag in class RepresentationInfo
    
    Parameters:
    
    tag - The tag.
  - setTransient
```
public void setTransient(boolean isTransient)
```
    Description copied from class: Representation
    
    Indicates if the representation's content is transient.
    
    Overrides:
    
    setTransient in class Representation
    
    Parameters:
    
    isTransient - True if the representation's content is transient.
  - write
```
public void write(java.io.OutputStream outputStream)
           throws java.io.IOException
```
    Description copied from class: Representation
    
    Writes the representation to a byte stream. 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.
    
    Note that the class implementing this method shouldn't flush or close the given OutputStream after writing to it as this will be handled by the Restlet connectors automatically.
    
    Specified by:
    
    write in class Representation
    
    Parameters:
    
    outputStream - The output stream.
    
    Throws:
    
    java.io.IOException
  - write
```
public void write(java.io.Writer writer)
           throws java.io.IOException
```
    Description copied from class: Representation
    
    Writes the representation to a characters writer. 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.
    
    Note that the class implementing this method shouldn't flush or close the given Writer after writing to it as this will be handled by the Restlet connectors automatically.
    
    Specified by:
    
    write in class Representation
    
    Parameters:
    
    writer - The characters writer.
    
    Throws:
    
    java.io.IOException
  - write
```
public void write(java.nio.channels.WritableByteChannel writableChannel)
           throws java.io.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:
    
    java.io.IOException

Class WrapperRepresentation

Field Summary

Fields inherited from class org.restlet.representation.Representation

Constructor Summary

Method Summary

Methods inherited from class org.restlet.representation.Representation

Methods inherited from class org.restlet.representation.Variant

Methods inherited from class java.lang.Object

Constructor Detail

WrapperRepresentation

Method Detail

exhaust

getAvailableSize

getChannel

getCharacterSet

getDigest

getDisposition

getEncodings

getExpirationDate

getLanguages

getLocationRef

getMediaType

getModificationDate

getRange

getReader

getSize

getStream

getTag

getText

getWrappedRepresentation

isAvailable

isSelectable

isTransient

getRegistration

release

setAvailable

setCharacterSet

setDigest

setDisposition

setEncodings

setExpirationDate

setLanguages

setLocationRef

setLocationRef

setMediaType

setModificationDate

setRange

setSize

setTag

setTransient

write

write

write