How can I use an optional number of parameters in a Jersey REST method?

Question

I'm new to Jersey. So, please pardon any mistake.

I'm trying to setup a simple REST ws. There is a method name getConnectedMHubs that have one required parameter thingID and two optional parameters: time and delta .

Is it possible to use the same method name for the two type of calls, with and without the optional parameters? I tried to specify two pathes but got a ModelValidationException , that says:

A resource model has ambiguous (sub-)resource method for HTTP method GET and input mime-types as defined by"@Consumes" and "@Produces" annotations at Java methods public ...

Code sample:

@Path("/api")
public class RendezvousWebService {
    @GET
    @Produces(MediaType.APPLICATION_JSON)
    @Path("connectedmhubs/{mhubid}")
    public String getConnectedThings(@PathParam("mhubid") String strMHubID) {
        // ...
        return "{}";
    }

    @GET
    @Produces(MediaType.APPLICATION_JSON)
    @Path("connectedmhubs/{mhubid}/{time}/{delta}")
    public String getConnectedThingsExtended(@PathParam("mhubid") String strMHubID, @PathParam("time") long timestamp, @PathParam("delta") long delta){
        // ...
        return "{}";
    }

}

Answer 1

Using the @Path makes the params mandatory. You can get around this with regular expressions or you can use @QueryParam with @DefaultValue to roll the two methods into one.

Answer 2

Using a path pattern like this:

@Path("connectedmhubs/{mhubid}")

makes the path parameter mandatory. However, you can make use of regular expressions to overcome this limitation. See this link for details.