89 lines
1.9 KiB
C#
89 lines
1.9 KiB
C#
using System;
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using System.Data;
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using System.Data.SqlClient;
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using Csla;
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using Csla.Data;
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namespace ProjectTracker.Library
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{
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[Serializable()]
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public class RoleList :
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NameValueListBase<int, string>
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{
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#region Business Methods
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public static int DefaultRole()
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{
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RoleList list = GetList();
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if (list.Count > 0)
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return list.Items[0].Key;
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else
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throw new NullReferenceException(
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"No roles available; default role can not be returned");
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}
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#endregion
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#region Factory Methods
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private static RoleList _list;
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/// <summary>
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/// Returns a list of roles.
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/// </summary>
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public static RoleList GetList()
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{
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if (_list == null)
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_list = DataPortal.Fetch<RoleList>
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(new Criteria(typeof(RoleList)));
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return _list;
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}
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/// <summary>
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/// Clears the in-memory RoleList cache
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/// so the list of roles is reloaded on
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/// next request.
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/// </summary>
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public static void InvalidateCache()
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{
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_list = null;
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}
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private RoleList()
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{ /* require use of factory methods */ }
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#endregion
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#region Data Access
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private void DataPortal_Fetch(Criteria criteria)
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{
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this.RaiseListChangedEvents = false;
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using (SqlConnection cn = new SqlConnection(Database.PTrackerConnection))
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{
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cn.Open();
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using (SqlCommand cm = cn.CreateCommand())
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{
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cm.CommandType = CommandType.StoredProcedure;
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cm.CommandText = "getRoles";
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using (SafeDataReader dr =
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new SafeDataReader(cm.ExecuteReader()))
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{
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IsReadOnly = false;
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while (dr.Read())
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{
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this.Add(new NameValuePair(
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dr.GetInt32("id"), dr.GetString("name")));
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}
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IsReadOnly = true;
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}
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}
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}
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this.RaiseListChangedEvents = true;
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}
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#endregion
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}
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}
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