/// <summary>
/// Method to create the database collection associated with the specified model type using
/// the current configuration settings.
/// </summary>
/// <returns></returns>
public static async Task <bool> CreateCollectionAsync <T>(IDocumentDBConfiguration configuration)
{
string collectionName = ModelUtility.GetPluralizedModelName <T>();
using (var client = NewDocumentClient(configuration))
{
string collectionsFeed = GetCollectionsFeed(configuration);
DocumentCollection collection = client.CreateDocumentCollectionQuery(collectionsFeed)
.Where(c => c.Id == collectionName)
.AsEnumerable()
.FirstOrDefault();
if (collection == null)
{
collection = await client.CreateDocumentCollectionAsync(
collectionsFeed,
new DocumentCollection { Id = collectionName });
return(true);
}
else
{
return(false);
}
}
}
public async Task <T> GetAsync(string id)
{
using (var connection = new SqlConnection(ConnectionString))
{
var result = await connection.QueryAsync <T>($"select * from {ModelUtility.GetPluralizedModelName<T>()} where id = @Id", new { Id = id });
return(result.FirstOrDefault());
}
}
public async Task <bool> DeleteAsync(string id)
{
using (var connection = new SqlConnection(ConnectionString))
{
var resultCount = await connection.ExecuteAsync($"delete {ModelUtility.GetPluralizedModelName<T>()} where id = @Id", new { Id = id });
return(resultCount == 1);
}
}
public async Task <T> UpsertAsync(T model)
{
string command = String.Empty;
using (var connection = new SqlConnection(ConnectionString))
{
var ids = await connection.QueryAsync <string>("select top 1 id from DataPoints where id = @Id", model);
if (ids == null || ids.Count() != 1)
{
command = String.Format(
"insert into {0} ({1}) values({2})",
ModelUtility.GetPluralizedModelName <T>(),
DapperUtility.GetPropertyNames <T>(),
DapperUtility.GetPropertyNames <T>(true));
}
else
{
command = String.Format(
"update {0} set {1} where id = @Id",
ModelUtility.GetPluralizedModelName <T>(),
DapperUtility.GetPropertiesAssignmentSqlString <T>());
}
var upsertResult = await connection.ExecuteAsync(command, model);
if (upsertResult == 1)
{
connection.Close();
return(model);
}
else
{
connection.Close();
return(null);
}
}
}
/// <summary>
/// Get a string for a document feed based on configuration setting for the database name and the
/// type of the model in the collection
/// </summary>
/// <returns></returns>
internal static string GetDocumentFeed <T>(IDocumentDBConfiguration configuration) where T : IModel
{
return($"{GetCollectionsFeed(configuration)}colls/{ModelUtility.GetPluralizedModelName<T>()}");
}
