I am trying to use Semantic Knowledge Graph in my java based application. I have a Semantic Knowledge Graph query which works fine if I trigger it through browser using restlet client. Following is the query.
{ "queries": [ "foo:\"5a6127a7234e76473a816f1c\"" ], "compare": [ { "type": "bar", "limit": 30 } ]} Now, I want to trigger the same query through SolrJ client. I have tried following code but it gives me an error {"error":{"msg":"KnowledgeGraphHandler requires POST data","code":400}} The code in java is SolrQuery request = new SolrQuery(); request.setRequestHandler("/skg"); request.setShowDebugInfo(true); request.setParam("wt", "json"); request.setParam("json", "{\"queries\":[\"foo:\\\"5a6127a7234e76473a816f1c\\\"\"],\"compare\":[{\"type\":\"bar\",\"limit\":30}]}"); request.set("rows", 10); request.setParam("qf", "conceptname^10 tags^3 textproperty^2 file_text^4"); try { QueryResponse response = getStore().getEnvironment().getSolr().query(request, SolrRequest.METHOD.POST); NamedList<Object> rsp = response.getResponse(); ArrayList<SimpleOrderedMap<Object>> skg_resp = (ArrayList<SimpleOrderedMap<Object>>) rsp.get("clusters"); if (skg_resp != null) { } } Any idea what is wrong here? Any pointer to documentation on how to construct request for Semantic Knowledge Graph through solrJ would be very helpful. Thanks Pratik