Package org.apache.calcite.adapter.file

Class JsonScannableTable

java.lang.Object

org.apache.calcite.schema.impl.AbstractTable

org.apache.calcite.adapter.file.JsonTable

org.apache.calcite.adapter.file.JsonScannableTable

All Implemented Interfaces:

ScannableTable, Table, Wrapper

public class JsonScannableTable
extends JsonTable
implements ScannableTable

Table based on a JSON file.

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

Field Summary

Fields inherited from class org.apache.calcite.adapter.file.JsonTable

dataList

Constructor Summary

Constructors

Constructor	Description
JsonScannableTable(Source source)	Creates a JsonScannableTable.

Method Summary

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

Methods inherited from class org.apache.calcite.adapter.file.JsonTable

getDataList, getRowType, getStatistic

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

getJdbcTableType, 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

Constructor Details

JsonScannableTable

public JsonScannableTable(Source source)

Creates a JsonScannableTable.

Method Details

toString

public String toString()

Overrides:

toString in class Object

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