OpenSim-Test/OpenSim/Data/MSSQL/MSSQLFriendsData.cs

/*
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 *       derived from this software without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ''AS IS'' AND ANY
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using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using OpenMetaverse;
using OpenSim.Framework;
using System.Data.SqlClient;
using System.Reflection;
using System.Text;

namespace OpenSim.Data.MSSQL
{
    public class MSSQLFriendsData : MSSQLGenericTableHandler<FriendsData>, IFriendsData
    {
        public MSSQLFriendsData(string connectionString, string realm)
            : base(connectionString, realm, "FriendsStore")
        {
            using (SqlConnection conn = new SqlConnection(m_ConnectionString))
            {
                conn.Open();
                Migration m = new Migration(conn, GetType().Assembly, "FriendsStore");
                m.Update();
            }
        }

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

        public bool Delete(string principalID, string friend)
        {
            using (SqlConnection conn = new SqlConnection(m_ConnectionString))
            using (SqlCommand cmd = new SqlCommand())
            {
                cmd.CommandText = String.Format("delete from {0} where PrincipalID = @PrincipalID and Friend = @Friend", m_Realm);
                cmd.Parameters.Add(m_database.CreateParameter("@PrincipalID", principalID.ToString()));
                cmd.Parameters.Add(m_database.CreateParameter("@Friend", friend));
                cmd.Connection = conn;
                conn.Open();
                cmd.ExecuteNonQuery();

                return true;
            }
        }

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

        public FriendsData[] GetFriends(string principalID)
        {
            using (SqlConnection conn = new SqlConnection(m_ConnectionString))
            using (SqlCommand cmd = new SqlCommand())
            {

                cmd.CommandText = String.Format("select a.*,case when b.Flags is null then -1 else b.Flags end as TheirFlags from {0} as a left join {0} as b on a.PrincipalID = b.Friend and a.Friend = b.PrincipalID where a.PrincipalID = @PrincipalID", m_Realm);
                cmd.Parameters.Add(m_database.CreateParameter("@PrincipalID", principalID.ToString()));
                cmd.Connection = conn;
                conn.Open();
                return DoQuery(cmd);
            }
        }

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