call setX method on java object to convert map to java object?

Question

I am trying to convert JSON file to thrift binary format to save storage and network bandwidth. this is irrelevant to my question. But want to describe its context.

So let say, I have a map from json, and Java Class Event

(def m 
 {"a" 1 
  "b" 2})

java class

package my-test;

class Event {
   public String a;
   public String b;
   public void setA(String a) { this.a = a; }
   public void setB(String b) { this.b = b; }
}

How can I get a Event object with value m?

P.S.

tried to use call-method* mentioned in https://groups.google.com/forum/#!topic/clojure/YJNRnGXLr2I

(defn call-method* [obj m & args]
  (eval `(. ~obj ~(symbol m) ~@args)))

but Can't embed object in code, maybe print-dup not defined raised. I have no idea why.

=> (def o (Event.))
=> (call-method* o "setA" "1")
CompilerException java.lang.RuntimeException: Can't embed object in code,  
maybe print-dup not defined: mytest.Event@681d891, compiling:   
 (/private/var/folders/hd/xxl2lfmn5wggspxwwtk2r2zr0000gn/T/form-init2883112335729429073.clj:1:1)

P.S.

This Question Dynamic method calls in a Clojure macro? is more appropriate to read.

About thrift, I tried to set instance of thrift generated java class with clojure.java.data. It didn't worked with clojure.java.data/to-java because thrift generated java class is not a bean by default. thrift --gen java:beans a.thrift worked for me. — ruseel
– ruseel, Commented Jan 15, 2016 at 5:57

ruseel · Accepted Answer · 2016-01-14 08:40:11Z

1

clojure.java.data/to-java worked.

(import 'mytest.Event)
(use 'clojure.java.data)
(def m {"a" "1"})
(println (bean (to-java Event m)))

answered Jan 14, 2016 at 8:40

ruseel

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