org.apache.calcite.schema

Class Schemas.DummyDataContext

java.lang.Object

org.apache.calcite.schema.Schemas.DummyDataContext

All Implemented Interfaces:

DataContext

Enclosing class:

Schemas

private static class Schemas.DummyDataContext
extends Object
implements DataContext

Dummy data context that has no variables.

Nested Class Summary

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

DataContext.Variable

Field Summary

Fields

Modifier and Type	Field and Description
private CalciteConnection	connection
private com.google.common.collect.ImmutableMap<String,Object>	map
private SchemaPlus	rootSchema

Fields inherited from interface org.apache.calcite.DataContext

ROOT

Constructor Summary

Constructors

Constructor and Description
DummyDataContext(CalciteConnection connection, SchemaPlus rootSchema)

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

Field Detail

connection

private final CalciteConnection connection

rootSchema

private final SchemaPlus rootSchema

map

private final com.google.common.collect.ImmutableMap<String,Object> map

Constructor Detail

DummyDataContext

DummyDataContext(CalciteConnection connection,
                 SchemaPlus rootSchema)

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