Interface FilterableTable

  • All Superinterfaces:
    Table
    All Known Implementing Classes:
    CsvFilterableTable

    public interface FilterableTable
    extends Table
    Table that can be scanned, optionally applying supplied filter expressions, without creating an intermediate relational expression.
    See Also:
    ScannableTable
    • Method Detail

      • scan

        Enumerable<Object[]> scan​(DataContext root,
                                  List<RexNode> filters)
        Returns an enumerator over the rows in this Table. Each row is represented as an array of its column values.

        The list of filters is mutable. If the table can implement a particular filter, it should remove that filter from the list. If it cannot implement a filter, it should leave it in the list. Any filters remaining will be implemented by the consuming Calcite operator.