// [END bigtable_filters_limit_pass_all]
// [START bigtable_filters_modify_strip_value]
/// <summary>
/// /// Read using a strip value 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 filterModifyStripValue(string projectId = "YOUR-PROJECT-ID", string instanceId = "YOUR-INSTANCE-ID", string tableId = "YOUR-TABLE-ID")
{
// A filter that replaces the outputted cell value with the empty string
RowFilter filter = RowFilters.StripValueTransformer();
return(readFilter(projectId, instanceId, tableId, filter));
}
public override async Task <long> ReadHighestSequenceNrAsync(string persistenceId, long fromSequenceNr)
{
var rowRange = RowRange.ClosedOpen(
ToRowKeyBigtableByteString(persistenceId, fromSequenceNr),
ToRowKeyBigtableByteString(persistenceId, long.MaxValue));
var rows = RowSet.FromRowRanges(rowRange);
var stream = _bigtableClient.ReadRows(
_tableName,
rows: rows,
filter: RowFilters.Chain(RowFilters.CellsPerRowLimit(1), RowFilters.StripValueTransformer()));
var lastRow = await stream.LastOrDefault().ConfigureAwait(false);
return(lastRow == null ? 0L : GetSequenceNumber(lastRow));
}
public void StripValueTransformer()
{
var filter = RowFilters.StripValueTransformer();
Assert.True(filter.StripValueTransformer);
}