Package org.apache.calcite.schema

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 Summary

Modifier and Type	Method	Description
Enumerable<@Nullable Object[]>	scan(DataContext root, List<RexNode> filters)	Returns an enumerator over the rows in this Table.

Methods inherited from interface org.apache.calcite.schema.Table

getJdbcTableType, getRowType, getStatistic, isRolledUp, rolledUpColumnValidInsideAgg

Method Details

scan

Enumerable<@Nullable 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.