// [END bigtable_filters_limit_cells_per_row_offset]
// [START bigtable_filters_limit_col_family_regex]
/// <summary>
/// /// Read using a family regex filter from an existing table.
///</summary>
/// <param name="projectId">Your Google Cloud Project ID.</param>
/// <param name="instanceId">Your Google Cloud Bigtable Instance ID.</param>
/// <param name="tableId">Your Google Cloud Bigtable table ID.</param>
public string filterLimitColFamilyRegex(
String projectId, String instanceId, String tableId)
{
// A filter that matches cells whose column family satisfies the given regex
RowFilter filter = RowFilters.FamilyNameRegex("stats_.*$");
return(readFilter(projectId, instanceId, tableId, filter));
}
public static async Task HasNoValuesAsync(
BigtableClient client,
TableName tableName,
BigtableByteString rowKey,
string familyName = null)
{
var filter = familyName == null
? RowFilters.PassAllFilter()
: RowFilters.FamilyNameRegex(familyName);
Assert.Null(await client.ReadRowAsync(tableName, rowKey, filter));
}
public void Condition()
{
var filter = RowFilters.Condition(
RowFilters.ColumnQualifierRegex("last_name"),
RowFilters.RowSample(0.5),
RowFilters.FamilyNameRegex("address"));
Assert.NotNull(filter.Condition);
Assert.Equal(
RowFilters.ColumnQualifierRegex("last_name"),
filter.Condition.PredicateFilter);
Assert.Equal(RowFilters.RowSample(0.5), filter.Condition.TrueFilter);
Assert.Equal(RowFilters.FamilyNameRegex("address"), filter.Condition.FalseFilter);
}
public void FamilyNameRegex_Validations()
{
Assert.Throws <ArgumentNullException>(() => RowFilters.FamilyNameRegex(null));
}
public void FamilyNameRegex()
{
var filter = RowFilters.FamilyNameRegex("abc");
Assert.Equal("abc", filter.FamilyNameRegexFilter);
}
