NullFriendsData.cs

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using System;
using System.Collections;
using System.Collections.Generic;
using System.Reflection;
using System.Threading;
using log4net;
using OpenMetaverse;
using OpenSim.Framework;
using OpenSim.Data;

namespace OpenSim.Data.Null
{
    public class NullFriendsData : IFriendsData
    {
//        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

        private static List<FriendsData> m_Data = new List<FriendsData>();

        public NullFriendsData(string connectionString, string realm)
        {
        }

        public static void Clear()
        {
            lock (m_Data)
                m_Data.Clear();
        }

        public FriendsData[] GetFriends(UUID principalID)
        {
            return GetFriends(principalID.ToString());
        }

        public FriendsData[] GetFriends(string userID)
        {
            lock (m_Data)
            {
                List<FriendsData> lst = m_Data.FindAll(fdata =>
                {
                    return fdata.PrincipalID == userID.ToString();
                });
    
                if (lst != null)
                {
                    lst.ForEach(f =>
                    {
                        FriendsData f2 = m_Data.Find(candidateF2 => f.Friend == candidateF2.PrincipalID);
                        if (f2 != null)
                            f.Data["TheirFlags"] = f2.Data["Flags"];
    
    //                    m_log.DebugFormat(
    //                        "[NULL FRIENDS DATA]: Got {0} {1} {2} for {3}",
    //                        f.Friend, f.Data["Flags"], f2 != null ? f.Data["TheirFlags"] : "not found!", f.PrincipalID);
                    });
    
    //                m_log.DebugFormat("[NULL FRIENDS DATA]: Got {0} friends for {1}", lst.Count, userID);
    
                    return lst.ToArray();
                }
            }

            return new FriendsData[0];
        }

        public bool Store(FriendsData data)
        {
            if (data == null)
                return false;

//            m_log.DebugFormat(
//                "[NULL FRIENDS DATA]: Storing {0} {1} {2}", data.PrincipalID, data.Friend, data.Data["Flags"]);

            lock (m_Data)
                m_Data.Add(data);

            return true;
        }

        public bool Delete(UUID principalID, string friend)
        {
            return Delete(principalID.ToString(), friend);
        }

        public bool Delete(string userID, string friendID)
        {
            lock (m_Data)
            {
                List<FriendsData> lst = m_Data.FindAll(delegate(FriendsData fdata) { return fdata.PrincipalID == userID.ToString(); });
                if (lst != null)
                {
                    FriendsData friend = lst.Find(delegate(FriendsData fdata) { return fdata.Friend == friendID; });
                    if (friendID != null)
                    {
    //                    m_log.DebugFormat(
    //                        "[NULL FRIENDS DATA]: Deleting friend {0} {1} for {2}",
    //                        friend.Friend, friend.Data["Flags"], friend.PrincipalID);
    
                        m_Data.Remove(friend);
                        return true;
                    }
                }
            }

            return false;
        }

    }
}