2 /* -----------------------------------------------------------------------
3 * <copyright file="PermissionConverter.cs" company="GRNet">
5 * Copyright 2011-2012 GRNET S.A. All rights reserved.
7 * Redistribution and use in source and binary forms, with or
8 * without modification, are permitted provided that the following
11 * 1. Redistributions of source code must retain the above
12 * copyright notice, this list of conditions and the following
15 * 2. Redistributions in binary form must reproduce the above
16 * copyright notice, this list of conditions and the following
17 * disclaimer in the documentation and/or other materials
18 * provided with the distribution.
21 * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
22 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
25 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
28 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
31 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 * POSSIBILITY OF SUCH DAMAGE.
34 * The views and conclusions contained in the software and
35 * documentation are those of the authors and should not be
36 * interpreted as representing official policies, either expressed
37 * or implied, of GRNET S.A.
39 * -----------------------------------------------------------------------
43 using System.Collections.Generic;
46 using Newtonsoft.Json;
48 namespace Pithos.Interfaces
50 public class PermissionConverter:JsonConverter
52 public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
54 var dict = (Dictionary<string, string>) value;
55 var pairs = from pair in dict
56 group pair by pair.Value into g
57 select new {Permission=g.Key,Names=String.Join(",", g.SelectMany(p=>p.Key))};
59 var result=pairs.Aggregate(new StringBuilder(),
61 builder.AppendFormat("{0}={1};", perm.Permission, perm.Names));
63 var finalValue = result.ToString();
64 writer.WriteValue(finalValue);
67 public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
70 var permissionString= (string) reader.Value;
72 var permissions = (from permisson in permissionString.Split(';')
73 let parsed = permisson.Split('=')
74 from account in parsed[1].Split(',')
75 select new { account, Permission = parsed[0] })
76 .ToDictionary(perm=>perm.account,perm=>perm.Permission);
81 public override bool CanConvert(Type objectType)
83 return (objectType==typeof(Dictionary<string,string>));