Java Reference
In-Depth Information
In the
PersonResource
the links are set with a private method, shown in the next list-
ing.
Listing 9.7. Setting
prev
,
self
, and
next
link headers for each person
So-called “self” links are generated for each person. Next and previous links are generated
for those elements between the first and last. The links themselves are simply generated by
string manipulation.
Adding the links to the resource is done with the
links
method:
Response findById(@PathParam("id")
long
id) {
Person p = dao.findById(id)
Response.
ok
(p)
.links(getLinks(id))
.build()
}
It turns out that converting the
Link
headers into something useful isn't simple with the
RESTClient
. In this case the JAX-RS
Client
class works better. The
Client
class
has a method called
getLink
, which takes a string argument, in which the string is the
relation type. That method returns an instance of the
javax.ws.rs .core.Link
class,
which corresponds to specification RFC 5988, Web Linking, of the IETF.
