/// <summary>Finds a a ModelType record using a configuration and an external identifier.</summary>
/// <param name="configurationId">Specified which mappings (user id columns) to use when looking up external identifiers.</param>
/// <param name="externalId">The external identifier for the record.</param>
public static int FindRequiredKey(object configurationId, string parameterId, string externalId)
{
// Look up the internal identifier using the configuration to select the ExternalId column and the external identifier to identify the record
int internalId = ModelType.FindKey(configurationId, parameterId, externalId);
if ((internalId == int.MinValue))
{
throw new Exception(string.Format("The ModelType table does not have a record identified by \'{0}\'", externalId));
}
// Return the internal identifier.
return internalId;
}
/// <summary>Finds a a ModelType record using a configuration and an external identifier.</summary>
/// <param name="configurationId">Specified which mappings (user id columns) to use when looking up external identifiers.</param>
/// <param name="externalId">The external (user supplied) identifier for the record.</param>
public static object FindOptionalKey(object configurationId, string parameterId, object externalId)
{
// Look up the internal identifier using the the configuration to specify which ExternalId column to use as an index.
object internalId = null;
if ((externalId != null))
{
internalId = ModelType.FindKey(configurationId, parameterId, ((string)(externalId)));
if ((((int)(internalId)) == int.MinValue))
{
throw new Exception(string.Format("The ModelType table does not have a record identified by \'{0}\'", externalId));
}
}
// Return the internal identifier.
return internalId;
}