org.restlet.engine.application
Class StrictConneg

java.lang.Object
  org.restlet.engine.application.Conneg
      org.restlet.engine.application.StrictConneg

Direct Known Subclasses:

FlexibleConneg

public class StrictConneg
extends Conneg

Content negotiation algorithm that strictly interprets the content negotiation preferences.

Author:

Jerome Louvel

Constructor Summary

StrictConneg(Request request, MetadataService metadataService)
Constructor.

Method Summary

protected List<Preference<CharacterSet>>	getCharacterSetPrefs() Returns the enriched list of character set preferences.
protected List<Preference<Encoding>>	getEncodingPrefs() Returns the enriched list of encoding preferences.
protected List<Preference<Language>>	getLanguagePrefs() Returns the enriched list of language preferences.
protected List<Preference<MediaType>>	getMediaTypePrefs() Returns the enriched list of media type preferences.
protected float	scoreAnnotation(AnnotationInfo annotation) Scores the annotation descriptor.
float	scoreCharacterSet(CharacterSet characterSet) Scores a character set relatively to enriched client preferences.
float	scoreEncodings(List<Encoding> encodings) Scores encodings relatively to enriched client preferences.
float	scoreLanguages(List<Language> languages) Scores languages relatively to enriched client preferences.
float	scoreMediaType(MediaType mediaType) Scores a media type relatively to enriched client preferences.
protected <T extends Metadata> float	scoreMetadata(List<T> metadataList, List<Preference<T>> prefs) Scores a list of metadata relatively to enriched client preferences.
protected <T extends Metadata> float	scoreMetadata(T metadata, List<Preference<T>> prefs) Scores a metadata relatively to enriched client preferences.
float	scoreVariant(Variant variant) Scores a variant relatively to enriched client preferences.

Methods inherited from class org.restlet.engine.application.Conneg

getPreferredVariant, getRequest

Methods inherited from class java.lang.Object

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

Constructor Detail

StrictConneg

public StrictConneg(Request request,
                    MetadataService metadataService)

Constructor.

Parameters:

request - The request including client preferences.

metadataService - The metadata service used to get default metadata values.

Method Detail

getCharacterSetPrefs

protected List<Preference<CharacterSet>> getCharacterSetPrefs()

Returns the enriched list of character set preferences.

Returns:

The enriched list of character set preferences.

getEncodingPrefs

protected List<Preference<Encoding>> getEncodingPrefs()

Returns the enriched list of encoding preferences.

Returns:

The enriched list of encoding preferences.

getLanguagePrefs

protected List<Preference<Language>> getLanguagePrefs()

Returns the enriched list of language preferences.

Returns:

The enriched list of language preferences.

getMediaTypePrefs

protected List<Preference<MediaType>> getMediaTypePrefs()

Returns the enriched list of media type preferences.

Returns:

The enriched list of media type preferences.

scoreAnnotation

protected float scoreAnnotation(AnnotationInfo annotation)

Scores the annotation descriptor. By default, it assess the quality of the query parameters with the URI query constraint defined in the annotation value if any.

Parameters:

annotation - The annotation descriptor to score.

Returns:

The annotation descriptor score.

scoreCharacterSet

public float scoreCharacterSet(CharacterSet characterSet)

Scores a character set relatively to enriched client preferences.

Parameters:

characterSet - The character set to score.

Returns:

The score.

scoreEncodings

public float scoreEncodings(List<Encoding> encodings)

Scores encodings relatively to enriched client preferences.

Parameters:

encodings - The encodings to score.

Returns:

The score.

scoreLanguages

public float scoreLanguages(List<Language> languages)

Scores languages relatively to enriched client preferences.

Parameters:

languages - The languages to score.

Returns:

The score.

scoreMediaType

public float scoreMediaType(MediaType mediaType)

Scores a media type relatively to enriched client preferences.

Parameters:

mediaType - The media type to score.

Returns:

The score.

scoreMetadata

protected <T extends Metadata> float scoreMetadata(List<T> metadataList,
                                                   List<Preference<T>> prefs)

Scores a list of metadata relatively to enriched client preferences.

Parameters:

metadataList - The list of metadata to score.

Returns:

The score.

scoreMetadata

protected <T extends Metadata> float scoreMetadata(T metadata,
                                                   List<Preference<T>> prefs)

Scores a metadata relatively to enriched client preferences.

Parameters:

metadata - The metadata to score.

Returns:

The score.

scoreVariant

public float scoreVariant(Variant variant)

Scores a variant relatively to enriched client preferences. The language has a weight of 4, the media type 3, the character set 2 and the encoding 1.

Specified by:

scoreVariant in class Conneg

Parameters:

variant - The variant to score.

Returns:

The enriched client preferences.