org.apache.flink.optimizer.util

Class Utils

java.lang.Object

org.apache.flink.optimizer.util.Utils

public final class Utils
extends Object

Utility class that contains helper methods for optimizer.

Method Summary

Modifier and Type	Method and Description
static FieldList	createOrderedFromSet(FieldSet set)
static Ordering	createOrdering(FieldList fields)
static Ordering	createOrdering(FieldList fields, boolean[] directions)
static boolean[]	getDirections(Ordering o, int numFields)
static TypeComparatorFactory<?>	getShipComparator(Channel channel, ExecutionConfig executionConfig)

Methods inherited from class java.lang.Object

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

Method Detail

createOrderedFromSet

public static FieldList createOrderedFromSet(FieldSet set)

createOrdering

public static Ordering createOrdering(FieldList fields,
                                      boolean[] directions)

createOrdering

public static Ordering createOrdering(FieldList fields)

getDirections

public static boolean[] getDirections(Ordering o,
                                      int numFields)

getShipComparator

public static TypeComparatorFactory<?> getShipComparator(Channel channel,
                                                         ExecutionConfig executionConfig)