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Groups > comp.lang.java.programmer > #35753

Rest parameter without value

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I have been working with java, but REST is new to me.
Now I am working on a REST client for the first time.
I have already managed to use a rest request with a path parameter and
another one with query parameters.

Now the request with a path parameter should in some occasions contain a
parameter without a value. 

I have used an url like this:
http://machine/path/v3.0/keyvalue
(where "keyvalue" is the variable path parameter and the url is
otherwise constant)

and in another context I should use
http://machine/path/v3.0/keyvalue?foo

Where "foo" is a constant parameter name.
But I haven't figured out how to add a parameter without a value!


What I have tried looks essentially like this:

String url = "http://machine/path/v3.0/{keyvalue}";
Private javax.ws.rs.Client client; // initialized in the constructor
.. 

private Object makeCall(String keyvalue, boolean b) {
  UriBuilder builder = UriBuilder.fromUri( url ).path( path ).
                        resolveTemplate( "keyvalue", keyvalue );
  WebTarget target = client.target( builder );
  if (b) {
    target = target.queryParam("foo", "");
  }
  Response resp = target.request().headers(makeHeaders()).get();
  Object ret = null;
  ..
  // resp handling not shown here
  ..
  return ret;
}

Debugging this, I lookd at target after the target.queryParam call and
noticed that target contains a ResteasyUriBuilder object uriBuilder,
where the attribute "query" now contains "foo=".
So this apparently will make the actual url look like this:

http://machine/path/v3.0/keyvalue?foo=

But I need it without the equals at the end. How do I do that?

I also tried passing null to the target.queryParam call instead of the
empty String,
  target = target.queryParam("foo", null);
but that way target.uriBuildeer.query remains null.

-- 
Jukka Lahtinen

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Thread

Rest parameter without value Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> - 2016-10-14 15:28 +0300
  Re: Rest parameter without value Arne Vajhøj <arne@vajhoej.dk> - 2016-10-14 14:49 -0400
    Re: Rest parameter without value Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> - 2016-10-17 08:48 +0300
      Re: Rest parameter without value Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> - 2016-10-17 09:50 +0300
  Re: Rest parameter without value 4ndre4 <626401fd-4bc7-4f8f-b641-563ae0f72920@626401fd-4bc7-4f8f-b641-563ae0f72920.invalid> - 2016-10-14 21:16 +0100
  Re: Rest parameter without value Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> - 2016-10-17 08:30 +0300

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