Java Reference
In-Depth Information
@GET
@Override
@Produces({"application/xml", "application/json"})
public List<Customer> findAll() {
return super.findAll();
}
@GET
@Path("{from}/{to}")
@Produces({"application/xml", "application/json"})
public List<Customer> findRange(@PathParam("from")
Integer from, @PathParam("to")
Integer to) {
return super.findRange(new int[]{from, to});
}
@GET
@Path("count")
@Produces("text/plain")
public String countREST() {
return String.valueOf(super.count());
}
}
As evident by the
@Stateless
annotation, the generated class is a stateless session
bean. The
@Path
annotation is used to identify the
Uniform Resource Identifier
(
URI
) that our class will serve requests for. As we can see, several of the methods
in our class are annotated with the
@POST
,
@PUT
,
@DELETE
, and
@GET
annotations.
These methods will be automatically invoked when our web service responds to
the corresponding HTTP requests. Notice that several of the methods are annotated
with the
@Path
annotation as well, the reason for this is that some of these methods
require a parameter, for example, when we need to delete an entry from the
CUSTOMER
table, we need to pass the primary key of the corresponding row as a
parameter. The format of the value attribute of the
@Path
annotation is
"{varName}"
,
the text between the curly braces is known as a
path parameter
. Notice that the
method has corresponding parameters that are annotated with the
@PathParam
annotation.
