java - Default/Constant values for POST/PUT arguments with Retrofit -

using retrofit rest client library square, there anyway of providing default/constant values post/put fields in call.

i know including constant query parameters including them in path, work body parameters.

i have api looks similar to:

post /api/create type=constanta&value={value}  post /api/create type=constantb&value={value}&othervalue={othervalue} 

where second variant requires additional argument supplied. rather having single java method took 3 arguments, hoping able elide constants method call, like:

create(string value); create(string value, string othervalue); 

and have retrofit inject type argument constant.

given adding @formurlencoded can added modify how body encoded, if it's not natively supported retrofit, there anyway of adding own annotation , injecting such default values? ( doesn't appear requestinterceptor allows 1 modify body.. ).

maybe 1 option send object, encapsulates values, instead of string values separately? object implement default values.

for example, create class:

public class createobject {     private string type = "constant";     private string value;     private string othervalue;      public createobject(string value, string othervalue) {         this.value = value;         this.othervalue = othervalue;     } } 

your class handles constant. set default value "constant", did above, or set on fly in constructor.

now you've create object values , make request retrofit. instead of using string values directly, pass object. interface this:

public interface createservice {     @post("/api/create")     void create(@body createobject create, callback<createobject> cb); } 

the request implementation this:

createobject create = new createobject("value", "othervalue"); createservice.create(create, new callback<createobject)() {…}); 

this should include 3 of values in request body, if set. if value null, won't included in request body. based on 2 examples above, need 1 interface method. values sent based on createobject pass on. example, if set othervalue null, won't part of request body.

my examples modified from: https://futurestud.io/blog/retrofit-send-objects-in-request-body/