Package org.apache.calcite.schema

Interface TranslatableTable

All Superinterfaces:

Table

All Known Implementing Classes:

ArrowTable, CassandraTable, CsvTranslatableTable, CsvTranslatableTable, DruidTable, ElasticsearchTable, GeodeTable, InnodbTable, JdbcTable, MaterializedViewTable, MockCatalogReader.MockDynamicTable, MockCatalogReader.MockModifiableViewRelOptTable.MockModifiableViewTable, ModifiableViewTable, MongoTable, PigTable, Smalls.SimpleTable, StarTable, ViewTable

public interface TranslatableTable
extends Table

Extension to Table that specifies how it is to be translated to a relational expression.

It is optional for a Table to implement this interface. If Table does not implement this interface, it will be converted to an EnumerableTableScan. Generally a Table will implement this interface to create a particular subclass of RelNode, and also register rules that act on that particular subclass of RelNode.

Method Summary

Modifier and Type	Method	Description
RelNode	toRel(RelOptTable.ToRelContext context, RelOptTable relOptTable)	Converts this table into a relational expression.

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

getJdbcTableType, getRowType, getStatistic, isRolledUp, rolledUpColumnValidInsideAgg

Method Details

toRel

RelNode toRel(RelOptTable.ToRelContext context,
 RelOptTable relOptTable)

Converts this table into a relational expression.