Package 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	Description
static final DataContext	EMPTY	Instance of DataContext that has no variables.

Method Summary

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

Methods inherited from class java.lang.Object

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

Field Details

EMPTY

public static final DataContext EMPTY

Instance of DataContext that has no variables.

Method Details

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 @Nullable 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.