Merge pull request #241 from wooldridge/github-issue-237-defaultGraphs

correctly handle default graphs in multi-param sparql()

Author: ehennum

lib/graphs.js

@@ -607,6 +607,7 @@ Graphs.prototype.sparql = function queryGraphSPARQL() {
 
   // TODO: collection, directory?
 
+  // Single configuration object
   if (argLen === 1) {
     var params = args[0];
     acceptType    = params.contentType;
@@ -626,9 +627,11 @@ Graphs.prototype.sparql = function queryGraphSPARQL() {
     if ((acceptType == null) || (query == null)) {
       throw new Error('named parameters must specify content type and query for SPARQL query on graphs');
     }
-  } else {
+  }
+  // Multiple params
+  else {
     acceptType = args[0];
-    if (argLen > 3) {
+    if (argLen >= 3) {
       defaultGraphs = Array.prototype.slice.call(arguments, 1, argLen - 1);
     }
     query = args[argLen - 1];