Package javax.ws.rs.core

Class Link

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description
      static interface  Link.Builder
      Builder class for hypermedia links.
      static class  Link.JaxbAdapter
      An implementation of JAXB XmlAdapter that maps the Link type to a value that can be marshalled and unmarshalled by JAXB.
      static class  Link.JaxbLink
      Value type for Link that can be marshalled and unmarshalled by JAXB.

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static String REL
      Rel link param from RFC 5988.
      static String TITLE
      Title link param from RFC 5988.
      static String TYPE
      Type link param from RFC 5988.

    • Constructor Summary

      Constructors 
      Constructor Description
      Link()  

    • Constructor Detail

      • Link

        public Link()

    • Method Detail

      • getUri

        public abstract URI getUri()
        Returns the underlying URI associated with this link.
        Returns:
        underlying URI.

      • getUriBuilder

        public abstract UriBuilder getUriBuilder()
        Convenience method that returns a UriBuilder initialized with this link's underlying URI.
        Returns:
        UriBuilder initialized using underlying URI.

      • getRel

        public abstract String getRel()
        Returns the value associated with the link rel param, or null if this param is not specified.
        Returns:
        relation types as string or null.

      • getRels

        public abstract List<String> getRels()
        Returns the value associated with the link rel param as a list of strings or the empty list if rel is not defined.
        Returns:
        relation types as list of strings or empty list.

      • getTitle

        public abstract String getTitle()
        Returns the value associated with the link title param, or null if this param is not specified.
        Returns:
        value of title parameter or null.

      • getType

        public abstract String getType()
        Returns the value associated with the link type param, or null if this param is not specified.
        Returns:
        value of type parameter or null.

      • getParams

        public abstract Map<String,​String> getParams()
        Returns an immutable map that includes all the link parameters defined on this link. If defined, this map will include entries for rel, title and type.
        Returns:
        immutable map of link parameters.

      • toString

        public abstract String toString()
        Returns a string representation as a link header (RFC 5988). All link params are serialized as link-param="value" where value is a quoted-string. For example, ; title="employee"; rel="manager friend"
        Overrides:
        toString in class Object
        Returns:
        string link header representation for this link.

      • valueOf

        public static Link valueOf​(String value)
        Simple parser to convert link header string representations into a link. 
         link ::= '<' uri '>' (';' link-param)*
 link-param ::= name '=' quoted-string
        See RFC 5988 for more information.
        Parameters:
        value - String representation.
        Returns:
        newly parsed link.
        Throws:
        IllegalArgumentException - if a syntax error is found.
        See Also:
        Link.Builder.link(java.lang.String)

      • fromUri

        public static Link.Builder fromUri​(URI uri)
        Create a new builder instance initialized from an existing URI.
        Parameters:
        uri - a URI that will be used to initialize the builder.
        Returns:
        a new builder.
        Throws:
        IllegalArgumentException - if uri is null.

      • fromUri

        public static Link.Builder fromUri​(String uri)
        Create a new builder instance initialized from an existing URI represented as a string.
        Parameters:
        uri - a URI that will be used to initialize the builder.
        Returns:
        a new builder.
        Throws:
        IllegalArgumentException - if uri is null.

      • fromUriBuilder

        public static Link.Builder fromUriBuilder​(UriBuilder uriBuilder)
        Create a new builder instance initialized from a URI builder.
        Parameters:
        uriBuilder - instance of URI builder.
        Returns:
        a new builder.

      • fromLink

        public static Link.Builder fromLink​(Link link)
        Create a new builder instance initialized from another link.
        Parameters:
        link - other link used for initialization.
        Returns:
        a new builder.

      • fromPath

        public static Link.Builder fromPath​(String path)
        Convenience method to build a link from a path. Equivalent to fromUriBuilder(UriBuilder.fromPath(path)).
        Parameters:
        path - a URI path that will be used to initialize the Link, may contain URI template parameters.
        Returns:
        a new Link.Builder.
        Throws:
        IllegalArgumentException - if path is null.

      • fromResource

        public static Link.Builder fromResource​(Class<?> resource)
        Convenience method to build a link from a resource. Equivalent to Link.fromUriBuilder({@link UriBuilder#fromResource UriBuilder.fromResource(resource)}). Note that the link URI passed to the Link.Builder instance returned by this method is relative. Should the link be built as absolute, a base URI has to be specified in the builder prior to building the new link instance. For example, on a server side a UriInfo.getBaseUri() may be typically used to define the base URI of a link created using this method.
        Parameters:
        resource - a root resource whose Path value will be used to initialize the builder.
        Returns:
        a new link builder instance.
        Throws:
        IllegalArgumentException - if resource is not annotated with Path or resource is null.
        See Also:
        UriInfo.getBaseUri()

      • fromMethod

        public static Link.Builder fromMethod​(Class<?> resource,
                                      String method)
        Convenience method to build a link from a resource. Equivalent to Link.fromUriBuilder({@link UriBuilder#fromMethod(Class, String) UriBuilder.fromMethod(resource, method)}). Note that the link URI passed to the Link.Builder instance returned by this method is relative. Should the link be built as absolute, a base URI has to be specified in the builder prior to building the new link instance. For example, on a server side a UriInfo.getBaseUri() may be typically used to define the base URI of a link created using this method.
        Parameters:
        resource - the resource containing the method.
        method - the name of the method whose Path value will be used to obtain the path to append.
        Returns:
        the updated Link.Builder.
        Throws:
        IllegalArgumentException - if resource or method is null, or there is more than or less than one variant of the method annotated with Path.
        See Also:
        UriInfo.getBaseUri()