fix 656 2.0

json-path/src/main/java/com/jayway/jsonpath/internal/JsonContext.java

@@ -25,6 +25,7 @@ import com.jayway.jsonpath.ReadContext;
 import com.jayway.jsonpath.TypeRef;
 import com.jayway.jsonpath.spi.cache.Cache;
 import com.jayway.jsonpath.spi.cache.CacheProvider;
+import com.jayway.jsonpath.spi.json.JsonProvider;
 
 import com.fasterxml.jackson.databind.node.ObjectNode;
 
@@ -55,19 +56,26 @@ public class JsonContext implements DocumentContext {
         this.configuration = configuration;
         //CS304 Issue link: https://github.com/json-path/JsonPath/issues/656
         Set<Object> set = new HashSet<>();
+        if (json instanceof ObjectNode){
             Collection<String> properties = configuration.jsonProvider().getPropertyKeys(json);
             for (String property : properties) {
                 Object propertyModel = configuration.jsonProvider().getMapValue(json, property);
                 if (!set.contains(propertyModel)) {
                     set.add(propertyModel);
                 } else {
+                    if(propertyModel instanceof ObjectNode){
                         ObjectNode obj_cast = (ObjectNode) propertyModel;
                         ObjectNode newobj = obj_cast.deepCopy();
                         ObjectNode objects_cast = (ObjectNode) json;
                         objects_cast.replace(property, newobj);
                     }
+
+                }
             }
             this.json = json;
+        } else {
+            this.json = json;
+        }
     }