Package javax.ws.rs.core

Class Variant

java.lang.Object

javax.ws.rs.core.Variant

public class Variant
extends Object

Abstraction for a resource representation variant. Contains information about media type, language and encoding of the resource representation.

Since:

1.0

Author:

Paul Sandoz, Marc Hadley

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Variant.VariantListBuilder	A builder for a list of representation variants.

Constructor Summary

Constructors

Constructor	Description
Variant(MediaType mediaType, String language, String encoding)	Create a new instance of Variant.
Variant(MediaType mediaType, String language, String country, String encoding)	Create a new instance of Variant.
Variant(MediaType mediaType, String language, String country, String languageVariant, String encoding)	Create a new instance of Variant.
Variant(MediaType mediaType, Locale language, String encoding)	Create a new instance of Variant.

Method Summary

Modifier and Type	Method	Description
static Variant.VariantListBuilder	encodings(String... encodings)	Create a Variant.VariantListBuilder initialized with a set of supported encodings.
boolean	equals(Object obj)	Compares obj to this variant to see if they are the same considering all property values.
String	getEncoding()	Get the encoding of the variant.
Locale	getLanguage()	Get the language of the variant.
String	getLanguageString()	Get the string representation of the variant language, or null if no language has been set.
MediaType	getMediaType()	Get the media type of the variant.
int	hashCode()	Generate hash code from variant properties.
static Variant.VariantListBuilder	languages(Locale... languages)	Create a Variant.VariantListBuilder initialized with a set of supported languages.
static Variant.VariantListBuilder	mediaTypes(MediaType... mediaTypes)	Create a Variant.VariantListBuilder initialized with a set of supported media types.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

Variant

public Variant(MediaType mediaType,
               String language,
               String encoding)

Create a new instance of Variant.

Parameters:

mediaType - the media type of the variant - may be null.

language - the language of the variant (two-letter ISO-639 code); may be null.

encoding - the content encoding of the variant - may be null.

Throws:

IllegalArgumentException - if all the parameters are null.

Since:

2.0

Variant

public Variant(MediaType mediaType,
               String language,
               String country,
               String encoding)

Create a new instance of Variant.

Parameters:

mediaType - the media type of the variant - may be null.

language - the language of the variant (two-letter ISO-639 code); may be null.

country - uppercase two-letter ISO-3166 language code of the variant; may be null provided language is null too.

encoding - the content encoding of the variant - may be null.

Throws:

IllegalArgumentException - if all the parameters are null.

Since:

2.0

Variant

public Variant(MediaType mediaType,
               String language,
               String country,
               String languageVariant,
               String encoding)

Create a new instance of Variant.

Parameters:

mediaType - the media type of the variant - may be null.

language - the language of the variant (two-letter ISO-639 code); may be null.

country - uppercase two-letter ISO-3166 language code of the variant; may be null provided language is null too.

languageVariant - vendor and browser specific language code of the variant (see also Locale class description); may be null provided language and country are null too.

encoding - the content encoding of the variant - may be null.

Throws:

IllegalArgumentException - if all the parameters are null.

Since:

2.0

Variant

public Variant(MediaType mediaType,
               Locale language,
               String encoding)

Create a new instance of Variant.

Parameters:

mediaType - the media type of the variant - may be null.

language - the language of the variant - may be null.

encoding - the content encoding of the variant - may be null.

Throws:

IllegalArgumentException - if all the parameters are null.

Method Detail

getLanguage

public Locale getLanguage()

Get the language of the variant.

Returns:

the language or null if none set.

getLanguageString

public String getLanguageString()

Get the string representation of the variant language, or null if no language has been set.

Returns:

the string representing variant language or null if none set.

Since:

2.0

getMediaType

public MediaType getMediaType()

Get the media type of the variant.

Returns:

the media type or null if none set.

getEncoding

public String getEncoding()

Get the encoding of the variant.

Returns:

the encoding or null if none set.

mediaTypes

public static Variant.VariantListBuilder mediaTypes(MediaType... mediaTypes)

Create a Variant.VariantListBuilder initialized with a set of supported media types.

Parameters:

mediaTypes - the available mediaTypes. If specific char-sets are supported they should be included as parameters of the respective media type.

Returns:

the initialized builder.

Throws:

IllegalArgumentException - if mediaTypes is null or contains no elements.

languages

public static Variant.VariantListBuilder languages(Locale... languages)

Create a Variant.VariantListBuilder initialized with a set of supported languages.

Parameters:

languages - the available languages.

Returns:

the initialized builder.

Throws:

IllegalArgumentException - if languages is null or contains no elements.

encodings

public static Variant.VariantListBuilder encodings(String... encodings)

Create a Variant.VariantListBuilder initialized with a set of supported encodings.

Parameters:

encodings - the available encodings.

Returns:

the initialized builder.

Throws:

IllegalArgumentException - if encodings is null or contains no elements.

hashCode

public int hashCode()

Generate hash code from variant properties.

Overrides:

hashCode in class Object

Returns:

the hash code.

equals

public boolean equals(Object obj)

Compares obj to this variant to see if they are the same considering all property values.

Overrides:

equals in class Object

Parameters:

obj - the object to compare to.

Returns:

true if the two variants are the same, false otherwise.

toString

public String toString()

Overrides:

toString in class Object