/// <summary>
/// Creates a get one query against the specified database.
/// </summary>
/// <typeparam name="TModel">The type of the model.</typeparam>
/// <param name="database">The database.</param>
/// <returns>A new get one query.</returns>
public static GetOneQueryAsync <TModel> GetOneAsync <TModel>(MongoDatabase database)
{
if (database == null)
{
throw new ArgumentNullException(nameof(database));
}
GetOneQueryAsync <TModel> queryAsync = async(where, collectionName, cancellationToken) =>
{
if (where == null)
{
throw new ArgumentNullException(nameof(where));
}
var modelTypeName = string.IsNullOrWhiteSpace(collectionName) ? typeof(TModel).Name : collectionName;
var client = database.CreateClient();
var collection = client.GetCollection <TModel>(modelTypeName);
var results = await collection.Find(where).ToListAsync(cancellationToken);
return(results.SingleOrDefault());
};
return(queryAsync);
}
/// <summary>
/// Creates a get one query against the specified database.
/// </summary>
/// <typeparam name="TModel">The type of the model.</typeparam>
/// <typeparam name="TMetadata">The type of the metadata.</typeparam>
/// <param name="database">The database.</param>
/// <returns>A new get one query.</returns>
public static GetOneQueryAsync <TModel, TMetadata> GetOneAsync <TModel, TMetadata>(MongoDatabase database)
{
var getOneQueryAsync = GetOneAsync <StorageModel <TModel, TMetadata> >(database);
GetOneQueryAsync <TModel, TMetadata> queryAsync = async(where, collectionName, cancellationToken) =>
{
var modelTypeName = string.IsNullOrWhiteSpace(collectionName) ? typeof(TModel).Name : collectionName;
var result = await getOneQueryAsync(where, modelTypeName, cancellationToken);
return(result == null ? default(TModel) : result.Model);
};
return(queryAsync);
}
