Package org.apache.calcite.runtime

Class Enumerables

java.lang.Object

org.apache.calcite.runtime.Enumerables

public class Enumerables
extends java.lang.Object

Utilities for processing Enumerable collections.

This class is a place to put things not yet added to linq4j. Methods are subject to removal without notice.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Enumerables()

Method Summary

Modifier and Type	Method	Description
static <E> Enumerable<E>	slice0(Enumerable<E[]> enumerable)	Converts an enumerable over singleton arrays into the enumerable of their first elements.
static com.google.common.base.Supplier<Enumerable<Row>>	toRow(com.google.common.base.Supplier<Enumerable<java.lang.Object[]>> supplier)	Deprecated.
static java.util.function.Supplier<Enumerable<Row>>	toRow(java.util.function.Supplier<Enumerable<java.lang.Object[]>> supplier)	Converts a supplier of an Enumerable over object arrays into a supplier of an Enumerable over Row objects.
static Enumerable<Row>	toRow(Enumerable<java.lang.Object[]> enumerable)	Converts an Enumerable over object arrays into an Enumerable over Row objects.

Methods inherited from class java.lang.Object

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

Constructor Detail

Enumerables

private Enumerables()

Method Detail

slice0

public static <E> Enumerable<E> slice0(Enumerable<E[]> enumerable)

Converts an enumerable over singleton arrays into the enumerable of their first elements.

toRow

public static Enumerable<Row> toRow(Enumerable<java.lang.Object[]> enumerable)

Converts an Enumerable over object arrays into an Enumerable over Row objects.

toRow

public static java.util.function.Supplier<Enumerable<Row>> toRow(java.util.function.Supplier<Enumerable<java.lang.Object[]>> supplier)

Converts a supplier of an Enumerable over object arrays into a supplier of an Enumerable over Row objects.

toRow

@Deprecated
public static com.google.common.base.Supplier<Enumerable<Row>> toRow(com.google.common.base.Supplier<Enumerable<java.lang.Object[]>> supplier)

Deprecated.