private static void CheckEntityIsNotTracked(DataServiceContextData data, object entity)
{
ExceptionUtilities.CheckArgumentNotNull(data, "data");
EntityDescriptorData descriptorData;
if (data.TryGetEntityDescriptorData(entity, out descriptorData))
{
throw new TaupoInvalidOperationException(
string.Format(CultureInfo.InvariantCulture, "Specified entity is already tracked by the descriptor data: {0}.", descriptorData.ToString()));
}
}
private static void CheckIdentity(DataServiceContextData data, Uri identity)
{
ExceptionUtilities.CheckArgumentNotNull(data, "data");
if (identity == null)
{
throw new TaupoInvalidOperationException("Entity identity cannot be null or empty.");
}
EntityDescriptorData descriptorData;
if (data.TryGetEntityDescriptorData(identity, out descriptorData))
{
throw new TaupoInvalidOperationException(
string.Format(CultureInfo.InvariantCulture, "There is already an entity descriptor data with the specified identity: {0}.", descriptorData.ToString()));
}
}
private static EntityDescriptorData GetTrackedEntityDescriptorData(DataServiceContextData data, object entity, string errorMessage, string argumentName)
{
ExceptionUtilities.CheckArgumentNotNull(data, "data");
EntityDescriptorData descriptorData;
if (!data.TryGetEntityDescriptorData(entity, out descriptorData))
{
throw new TaupoInvalidOperationException(errorMessage + " " + argumentName + " is not tracked by the data service context data.");
}
return descriptorData;
}