/* {  "answer": {    
			             "data": ["a" ],    
			             "event":"success",    
			             "id":"2204d4b2-de94-4946-965c-e7aaf12a1a8b",    
			             "more":true,    
			             "projection": ["X" ],    
			             "time":2.2752000000000015e-5  
			      },  
		        "event":"create",  
		        "id":"2204d4b2-de94-4946-965c-e7aaf12a1a8b",  
		        "slave_limit":3
		        }
		        
		        if no first solution job.add("ask", "member(X, [])");
		        {
		          "answer":{
			             "data":{
			                   "event":"failure",
			                   "id":"c7e9e0c5-84b6-4faa-bbcb-1e1139df1206",
			                   "time":0.000019857999999999985
			                   },
			             "event":"destro.
			             y",
			             "id":"c7e9e0c5-84b6-4faa-bbcb-1e1139df1206"
			         },
		         "event":"create",
		         "id":"c7e9e0c5-84b6-4faa-bbcb-1e1139df1206",
		         "slave_limit":3
		         }
		         
		         What happens if job.add("ask", "member(X, ][])");  (syntax invalid)?
		         it returns 500
		         (document that it also 500's if it throws an uncaught exception)
		         
		         what if we don't use template?
		         {  
		             "answer": {    
		                  "data": [ {"X":"a"} ],    
		                  "event":"success",    
		                  "id":"4f856b3a-a2a5-493c-8241-baf1a5a5ed28",    
		                  "more":true,    
		                  "projection": ["X" ],    
		                  "time":1.5222999999999973e-5  
		             },  
		             "event":"create",  
		             "id":"4f856b3a-a2a5-493c-8241-baf1a5a5ed28",  
		             "slave_limit":3}
		             
		             with more than one variable a couple fields change
		             	job.add("ask", "member((X,Y), [(a,3),(b,4),(c,5)])");
		              // job.add("template", "X");
		              "data": [ {"X":"a", "Y":3} ],    
                     "projection": ["X", "Y" ],  


		             non atom response
		             job.add("ask", "member(X, [(a,3),(b,4),(c,5)])");
		             job.add("template", "X");
		             {  "answer": {    
		                    "data": [ {"args": ["a", 3 ], "functor":","} ],   
		                     "event":"success",   
		                      "id":"514e0608-5925-4774-a408-4d5d03344c5f",    
		                      "more":true,    
		                      "projection": ["X" ],   
		                       "time":1.6837000000000015e-5  },  
		                       "event":"create",  
		                       "id":"514e0608-5925-4774-a408-4d5d03344c5f", 
					"slave_limit":3}
					
					now I'll set the type to json-s in the create
					and it just 500's
					
					Try it with chunking set to 2
					   job.add("ask", "member((X,Y), [(a,3),(b,4),(c,5)])");
		            
		            {  
		                 "answer": {    
			                 "data": [ {"X":"a", "Y":3},  {"X":"b", "Y":4} ],    
			                 "event":"success",    
			                 "id":"b648885b-cf65-49f4-a028-756bb2579d2b",    
			                 "more":true,    
			                 "projection": ["X", "Y" ],    
			                 "time":1.6732999999999896e-5  
			            },  
			            "event":"create",  
			            "id":"b648885b-cf65-49f4-a028-756bb2579d2b",  
			            "slave_limit":3
		            }
		            
		            what if the value bound is compound? I changed a in the example to a(taco)
		            "data": [      {"X": {"args": ["taco" ], "functor":"a"}, "Y":3},      {"X":"b", "Y":4}    ],  
		        */
			
/*
 * This project has involved a lot of experimenting, as hte protocol is poorly documented. As such,
 * I'm retaining my notes here
 */
// <domain>/<path>/pengine/create
// application/json
// see server_url/4, line 1529 of pengines.pl
/*
* HTTP/1.1 200 OK
Server: nginx/1.4.6 (Ubuntu)
Date: Wed, 20 Apr 2016 20:53:39 GMT
Content-Type: text/x-prolog; charset=UTF-8
Content-Length: 65
Connection: close

http://www.oracle.com/technetwork/articles/java/json-1973242.html

Asks response looks like
success('8eb2ec31-fd63-43a2-a80b-4552b6d505d7',
	[q(b)],
	1.1307000000002065e-5,
	true)
	
	the last item is whether there are more
	
then when you get the last one, and it does a destroy (I guess?)

destroy('8eb2ec31-fd63-43a2-a80b-4552b6d505d7',
	success('8eb2ec31-fd63-43a2-a80b-4552b6d505d7',
		[q(c)],
		2.1917999999999244e-5,
		false))
		
		
	from pengines.pl http_pengine_create/1
	
	%   HTTP POST handler  for  =/pengine/create=.   This  API  accepts  the
%   pengine  creation  parameters  both  as  =application/json=  and  as
%   =www-form-encoded=.

Looks like event_to_json we want the lang to be json-s maybe? certainly need to look into it.
For the moment, just json

Next uri looks like

'/pengine/send?id=421ec554-f15c-4798-b10d-897831727bef
(it's the same id,event,format handler in http_pengine_send, so same possible args)

and returns this strange critter

    
{"data":
         {"data":[{"X":"c"}],
         "event":"success",
         "id":"4c53430f-9570-4e05-9036f6b5fc63dd8c",
         "more":false,
         "time":0.00003951999999999992
     },
     "event":"destroy",
     "id":"4c53430f-9570-4e05-9036-f6b5fc63dd8c"
}




*/