/// <summary>
/// Applies row key prefix criteria to given queryable which allows to query a range of rows
/// </summary>
/// <typeparam name="TEntity">The type of the entity to return.</typeparam>
/// <param name="queryable">The queryable.</param>
/// <param name="prefix">The row key prefix.</param>
/// <returns>An instance of <see cref="IQueryable"/> that alllow further criterias to be added</returns>
public static IQueryable <TEntity> WhereRowKeyPrefix <TEntity>(this IQueryable <TEntity> queryable, string prefix) where TEntity : ITableEntity, new()
{
var range = new PrefixRange(prefix);
return(queryable.Where(x =>
x.RowKey.CompareTo(range.Start) >= 0 &&
x.RowKey.CompareTo(range.End) < 0));
}
static string WhereRowKeyPrefixFilter(string prefix)
{
var range = new PrefixRange(prefix);
var filter =
TableQuery.CombineFilters(
TableQuery.GenerateFilterCondition("RowKey", QueryComparisons.GreaterThanOrEqual, range.Start),
TableOperators.And,
TableQuery.GenerateFilterCondition("RowKey", QueryComparisons.LessThan, range.End));
return(filter);
}
