/// <summary>
/// Sets a single property value for a media object.
/// </summary>
/// <param name="id">The id.</param>
/// <param name="property">The property.</param>
/// <param name="value">The value.</param>
/// <remarks>Documented by Dev02, 2008-08-07</remarks>
/// <remarks>Documented by Dev03, 2009-01-13</remarks>
public void SetPropertyValue(int id, MLifter.DAL.Interfaces.MediaProperty property, string value)
{
SqlCeCommand cmd = MSSQLCEConn.CreateCommand(Parent.CurrentUser);
SqlCeTransaction tran = cmd.Connection.BeginTransaction();
if (GetPropertyValue(id, property) == null)
{
cmd.CommandText = "INSERT INTO MediaProperties (media_id, property, value) VALUES (@media_id, @property, @value);";
}
else
{
cmd.CommandText = "UPDATE MediaProperties SET value=@value WHERE media_id=@media_id AND property=@property;";
}
Dictionary <MediaProperty, string> properties = Parent.CurrentUser.Cache[ObjectLifetimeIdentifier.GetIdentifier(CacheObject.MediaProperties, id)] as Dictionary <MediaProperty, string>;
if (properties == null)
{
properties = new Dictionary <MediaProperty, string>();
}
properties[property] = value;
Parent.CurrentUser.Cache[ObjectLifetimeIdentifier.Create(CacheObject.MediaProperties, id, new TimeSpan(1, 0, 0))] = properties;
cmd.Parameters.Add("@media_id", id);
cmd.Parameters.Add("@property", property.ToString());
cmd.Parameters.Add("@value", value);
MSSQLCEConn.ExecuteNonQuery(cmd);
tran.Commit();
}
/// <summary>
/// Gets a single property value for a media object.
/// </summary>
/// <param name="id">The id.</param>
/// <param name="property">The property.</param>
/// <returns></returns>
/// <remarks>Documented by Dev02, 2008-08-07</remarks>
/// <remarks>Documented by Dev03, 2009-01-13</remarks>
public string GetPropertyValue(int id, MLifter.DAL.Interfaces.MediaProperty property)
{
Dictionary <MediaProperty, string> properties = Parent.CurrentUser.Cache[ObjectLifetimeIdentifier.GetIdentifier(CacheObject.MediaProperties, id)] as Dictionary <MediaProperty, string>;
if (properties != null && properties.ContainsKey(property))
{
return(properties[property]);
}
SqlCeCommand cmd = MSSQLCEConn.CreateCommand(Parent.CurrentUser);
cmd.CommandText = "SELECT property, value FROM MediaProperties WHERE media_id=@id";
cmd.Parameters.Add("@id", id);
SqlCeDataReader reader = MSSQLCEConn.ExecuteReader(cmd);
properties = new Dictionary <MediaProperty, string>();
while (reader.Read())
{
properties[(MediaProperty)Enum.Parse(typeof(MediaProperty), reader["property"].ToString())] = reader["value"].ToString();
}
reader.Close();
Parent.CurrentUser.Cache[ObjectLifetimeIdentifier.Create(CacheObject.MediaProperties, id, new TimeSpan(1, 0, 0))] = properties;
if (properties.ContainsKey(property))
{
return(properties[property]);
}
else
{
return(null);
}
}
