Using the encoder on state is too broad. (#18)

Related to issue: #14

Currently only the conditions and class name are encoded:

https://github.com/ParsePlatform/ParseLiveQuery-iOS-OSX/blob/master/Sources/ParseLiveQuery/Internal/QueryEncoder.swift

fix test

Author: rogerhu

ParseLiveQuery/src/main/java/com/parse/SubscribeClientOperation.java

@@ -22,7 +22,14 @@
         jsonObject.put("requestId", requestId);
         jsonObject.put("sessionToken", sessionToken);
 
-        JSONObject queryJsonObject = state.toJSON(PointerEncoder.get());
+        JSONObject queryJsonObject = new JSONObject();
+        queryJsonObject.put("className", state.className());
+
+        // TODO: add support for fields
+        // https://github.com/ParsePlatform/parse-server/issues/3671
+        
+        PointerEncoder pointerEncoder = PointerEncoder.get();
+        queryJsonObject.put("where", pointerEncoder.encode(state.constraints()));
 
         jsonObject.put("query", queryJsonObject);
 

ParseLiveQuery/src/test/java/com/parse/TestParseLiveQueryClient.java

@@ -117,7 +117,7 @@ public void testUnsubscribeWhenSubscribedToCallback() throws Exception {
     @Test
     public void testErrorWhileSubscribing() throws Exception {
         ParseQuery.State state = mock(ParseQuery.State.class);
-        when(state.toJSON(any(ParseEncoder.class))).thenThrow(new RuntimeException("forced error"));
+        when(state.constraints()).thenThrow(new RuntimeException("forced error"));
 
         ParseQuery.State.Builder builder = mock(ParseQuery.State.Builder.class);
         when(builder.build()).thenReturn(state);