add Error Number to QueryExecutionException

Author: irriss

src/BorderEast.ArangoDB.Client/BorderEast.ArangoDB.Client/Database/ArangoQuery.cs

@@ -84,7 +84,7 @@ public async Task<List<T>> ToListAsync() {
  var json = JsonConvert.DeserializeObject<AQLResult<T>>(result.Content);
 
  if (json.Error)
- throw new QueryExecutionException(json.ErrorMessage);
+ throw new QueryExecutionException(json.ErrorMessage, json.ErrorNumber);
 
  return json.Result;
  }

src/BorderEast.ArangoDB.Client/BorderEast.ArangoDB.Client/Exception/QueryExecutionException.cs

@@ -6,9 +6,10 @@ namespace BorderEast.ArangoDB.Client.Exception
 {
  public class QueryExecutionException : System.Exception
  {
- public QueryExecutionException(string message) : base(message)
+ public int ErrorNumber { get; private set; }
+ public QueryExecutionException(string message, int errorNum) : base(message)
  {
-
+ ErrorNumber = errorNum;
  }
  }
 }