org.apache.calcite

Class DataContexts

java.lang.Object

org.apache.calcite.DataContexts

public class DataContexts
extends Object

Utilities for DataContext.

Field Summary

Fields

Modifier and Type	Field and Description
static DataContext	EMPTY Instance of DataContext that has no variables.

Method Summary

Modifier and Type	Method and Description
static DataContext	of(CalciteConnection connection, @Nullable SchemaPlus rootSchema) Returns an instance of DataContext with the given connection and root schema but no variables.
static DataContext	of(Function<String,? extends Object> fn) Returns an instance of DataContext with the given function.
static DataContext	of(Map<String,?> map) Returns an instance of DataContext with the given map.

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY

public static final DataContext EMPTY

Instance of DataContext that has no variables.

Method Detail

of

public static DataContext of(Map<String,?> map)

Returns an instance of DataContext with the given map.

of

public static DataContext of(Function<String,? extends Object> fn)

Returns an instance of DataContext with the given function.

of

public static DataContext of(CalciteConnection connection,
                             @Nullable SchemaPlus rootSchema)

Returns an instance of DataContext with the given connection and root schema but no variables.