Package org.apache.calcite.adapter.csv

Class CsvStreamScannableTable

java.lang.Object

org.apache.calcite.schema.impl.AbstractTable

org.apache.calcite.adapter.csv.CsvTable

org.apache.calcite.adapter.csv.CsvScannableTable

org.apache.calcite.adapter.csv.CsvStreamScannableTable

All Implemented Interfaces:

ScannableTable, StreamableTable, Table, Wrapper

public class CsvStreamScannableTable
extends CsvScannableTable
implements StreamableTable

Table based on a CSV file.

It implements the ScannableTable interface, so Calcite gets data by calling the scan(DataContext) method.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.calcite.adapter.csv.CsvTable

CsvTable.Flavor

Field Summary

Fields inherited from class org.apache.calcite.adapter.csv.CsvTable

protoRowType, source

Method Summary

Modifier and Type	Method	Description
protected boolean	isStream()	Returns whether the table represents a stream.
Enumerable<@Nullable Object[]>	scan(DataContext root)	Returns an enumerator over the rows in this Table.
Table	stream()	Returns an enumerator over the rows in this Table.
String	toString()

Methods inherited from class org.apache.calcite.adapter.csv.CsvTable

getFieldTypes, getRowType

Methods inherited from class org.apache.calcite.schema.impl.AbstractTable

getJdbcTableType, getStatistic, isRolledUp, rolledUpColumnValidInsideAgg, unwrap

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

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

getJdbcTableType, getRowType, getStatistic, isRolledUp, rolledUpColumnValidInsideAgg

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

maybeUnwrap, unwrapOrThrow

Method Details

isStream

protected boolean isStream()

Description copied from class: CsvTable

Returns whether the table represents a stream.

Overrides:

isStream in class CsvTable

toString

public String toString()

Overrides:

toString in class CsvScannableTable

scan

public Enumerable<@Nullable Object[]> scan(DataContext root)

Description copied from interface: ScannableTable

Returns an enumerator over the rows in this Table. Each row is represented as an array of its column values.

Specified by:

scan in interface ScannableTable

Overrides:

scan in class CsvScannableTable

stream

public Table stream()

Description copied from interface: StreamableTable

Returns an enumerator over the rows in this Table. Each row is represented as an array of its column values.

Specified by:

stream in interface StreamableTable