org.apache.calcite.jdbc

Class CalciteConnectionImpl.SlimDataContext

java.lang.Object

org.apache.calcite.jdbc.CalciteConnectionImpl.SlimDataContext

All Implemented Interfaces:

Serializable, DataContext

Enclosing class:

CalciteConnectionImpl

private static class CalciteConnectionImpl.SlimDataContext
extends Object
implements DataContext, Serializable

Implementation of DataContext that has few variables and is Serializable. For Spark.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.calcite.DataContext

DataContext.Variable

Field Summary

Fields inherited from interface org.apache.calcite.DataContext

ROOT

Constructor Summary

Constructors

Modifier	Constructor and Description
private	SlimDataContext()

Method Summary

Modifier and Type	Method and Description
Object	get(String name) Returns a context variable.
QueryProvider	getQueryProvider() Returns the query provider.
SchemaPlus	getRootSchema() Returns a sub-schema with a given name, or null.
JavaTypeFactory	getTypeFactory() Returns the type factory.

Methods inherited from class java.lang.Object

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

Constructor Detail

SlimDataContext

private SlimDataContext()

Method Detail

getRootSchema

public SchemaPlus getRootSchema()

Description copied from interface: DataContext

Returns a sub-schema with a given name, or null.

Specified by:

getRootSchema in interface DataContext

getTypeFactory

public JavaTypeFactory getTypeFactory()

Description copied from interface: DataContext

Returns the type factory.

Specified by:

getTypeFactory in interface DataContext

getQueryProvider

public QueryProvider getQueryProvider()

Description copied from interface: DataContext

Returns the query provider.

Specified by:

getQueryProvider in interface DataContext

get

public Object get(String name)

Description copied from interface: DataContext

Returns a context variable.

Supported variables include: "sparkContext", "currentTimestamp", "localTimestamp".

Specified by:

get in interface DataContext

Parameters:

name - Name of variable