org.apache.druid.sql.calcite.external

Class ExternalDataSource

java.lang.Object

org.apache.druid.sql.calcite.external.ExternalDataSource

All Implemented Interfaces:

DataSource

public class ExternalDataSource
extends Object
implements DataSource

Represents external data for INSERT queries. Only used by the SQL layer, not by the query stack. Includes an InputSource and InputFormat, plus a RowSignature so the SQL planner has the type information necessary to validate and plan the query. This class is exercised in CalciteInsertDmlTest but is not currently exposed to end users.

Constructor Summary

Constructors

Constructor and Description
ExternalDataSource(InputSource inputSource, InputFormat inputFormat, RowSignature signature)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
List<DataSource>	getChildren()
InputFormat	getInputFormat()
InputSource	getInputSource()
RowSignature	getSignature()
Set<String>	getTableNames()
int	hashCode()
boolean	isCacheable(boolean isBroker)
boolean	isConcrete()
boolean	isGlobal()
String	toString()
DataSource	withChildren(List<DataSource> children)

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ExternalDataSource

public ExternalDataSource(InputSource inputSource,
                          InputFormat inputFormat,
                          RowSignature signature)

Method Detail

getInputSource

public InputSource getInputSource()

getInputFormat

public InputFormat getInputFormat()

getSignature

public RowSignature getSignature()

getTableNames

public Set<String> getTableNames()

Specified by:

getTableNames in interface DataSource

getChildren

public List<DataSource> getChildren()

Specified by:

getChildren in interface DataSource

withChildren

public DataSource withChildren(List<DataSource> children)

Specified by:

withChildren in interface DataSource

isCacheable

public boolean isCacheable(boolean isBroker)

Specified by:

isCacheable in interface DataSource

isGlobal

public boolean isGlobal()

Specified by:

isGlobal in interface DataSource

isConcrete

public boolean isConcrete()

Specified by:

isConcrete in interface DataSource

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object