/// <summary>
/// Initializes a new instance of the <see cref="AzureStorageTableLoader{TIn, TOut}"/> class.
/// </summary>
/// <param name="tableName">The name of the table to load.</param>
/// <param name="mapEntityFunc">The map entity function, this maps the TIn to TOut</param>
/// <param name="allPartitionKeys">All partition keys to load</param>
/// <param name="connectionString">The connectionstring to the storage account.</param>
/// <exception cref="ArgumentNullException"></exception>
/// <remarks>The table will start to load as soon as this type is constructed.</remarks>
/// <remarks>The table will start to load as soon as this type is constructed.</remarks>
public AzureStorageTableLoader(string connectionString
, string tableName
, Func <TIn, TOut> mapEntityFunc
, IEnumerable <string> allPartitionKeys)
{
if (mapEntityFunc == null)
{
throw new ArgumentNullException(nameof(mapEntityFunc));
}
if (string.IsNullOrWhiteSpace(connectionString))
{
throw new ArgumentException("Value cannot be null or whitespace.", nameof(connectionString));
}
if (string.IsNullOrWhiteSpace(tableName))
{
throw new ArgumentException("Value cannot be null or whitespace.", nameof(tableName));
}
_mapEntityFunc = mapEntityFunc;
CloudStorageAccount storageAccount = CloudStorageAccount.Parse(connectionString);
_tablePool = new CloudTablePool(tableName, storageAccount.CreateCloudTableClient());
_readAllEntitiesTask = Task.Run(async() =>
{
_allEntities = await ReadAllEntitiesFromTableStorage(allPartitionKeys);
});
}
public static bool RowExistsForRowKey(this ITablePool <CloudTable> tablePool, string rowKey)
{
var queryFilter = TableQuery.GenerateFilterCondition(RowKeyField, OpEquals, rowKey);
TableQuery query = new TableQuery();
query.SelectColumns = QuerySelectColumnsPartitionKeyRowKeyOnly;
query.FilterString = queryFilter;
return(tablePool.Execute(table =>
{
var result = table.ExecuteQuery(query);
return result.Any();
}));
}
/// <summary>
/// Initializes a new instance of the <see cref="AzureStorageTableLoader{TIn, TOut}"/> class.
/// </summary>
/// <param name="table">The table to load entities from.</param>
/// <param name="mapEntityFunc">The map entity function, this maps the TIn to TOut</param>
/// <param name="allPartitionKeys">All partition keys to load</param>
/// <exception cref="ArgumentNullException"></exception>
/// <remarks>The table will start to load as soon as this type is constructed.</remarks>
public AzureStorageTableLoader(CloudTable table
, Func <TIn, TOut> mapEntityFunc
, IEnumerable <string> allPartitionKeys)
{
if (mapEntityFunc == null)
{
throw new ArgumentNullException(nameof(mapEntityFunc));
}
_mapEntityFunc = mapEntityFunc;
_tablePool = new CloudTablePool(table.Name, table.ServiceClient);
_readAllEntitiesTask = Task.Run(async() =>
{
_allEntities = await ReadAllEntitiesFromTableStorage(allPartitionKeys);
});
}
