Package org.apache.calcite.adapter.file

Class JsonTable

java.lang.Object

org.apache.calcite.schema.impl.AbstractTable

org.apache.calcite.adapter.file.JsonTable

All Implemented Interfaces:

Table, Wrapper

Direct Known Subclasses:

JsonScannableTable

public class JsonTable
extends AbstractTable

Table based on a JSON file.

Field Summary

Fields

Modifier and Type	Field	Description
protected @Nullable List<Object>	dataList

Constructor Summary

Constructors

Constructor	Description
JsonTable(Source source)

Method Summary

Modifier and Type	Method	Description
List<Object>	getDataList(RelDataTypeFactory typeFactory)	Returns the data list of the table.
RelDataType	getRowType(RelDataTypeFactory typeFactory)	Returns this table's row type.
Statistic	getStatistic()	Returns a provider of statistics about this table.

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, toString, wait, wait, wait

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

maybeUnwrap, unwrapOrThrow

Field Details

dataList

protected @Nullable List<Object> dataList

Constructor Details

JsonTable

public JsonTable(Source source)

Method Details

getRowType

public RelDataType getRowType(RelDataTypeFactory typeFactory)

Description copied from interface: Table

Returns this table's row type.

This is a struct type whose fields describe the names and types of the columns in this table.

The implementer must use the type factory provided. This ensures that the type is converted into a canonical form; other equal types in the same query will use the same object.

Parameters:

typeFactory - Type factory with which to create the type

Returns:

Row type

getDataList

public List<Object> getDataList(RelDataTypeFactory typeFactory)

Returns the data list of the table.

getStatistic

public Statistic getStatistic()

Description copied from interface: Table

Returns a provider of statistics about this table.

Specified by:

getStatistic in interface Table

Overrides:

getStatistic in class AbstractTable