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 org.apache.flink.api.common.operators.util.FieldList	createOrderedFromSet(org.apache.flink.api.common.operators.util.FieldSet set)
static org.apache.flink.api.common.operators.Ordering	createOrdering(org.apache.flink.api.common.operators.util.FieldList fields)
static org.apache.flink.api.common.operators.Ordering	createOrdering(org.apache.flink.api.common.operators.util.FieldList fields, boolean[] directions)
static boolean[]	getDirections(org.apache.flink.api.common.operators.Ordering o, int numFields)
static org.apache.flink.api.common.typeutils.TypeComparatorFactory<?>	getShipComparator(Channel channel, org.apache.flink.api.common.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 org.apache.flink.api.common.operators.util.FieldList createOrderedFromSet(org.apache.flink.api.common.operators.util.FieldSet set)

createOrdering

public static org.apache.flink.api.common.operators.Ordering createOrdering(org.apache.flink.api.common.operators.util.FieldList fields,
                                                                            boolean[] directions)

createOrdering

public static org.apache.flink.api.common.operators.Ordering createOrdering(org.apache.flink.api.common.operators.util.FieldList fields)

getDirections

public static boolean[] getDirections(org.apache.flink.api.common.operators.Ordering o,
                                      int numFields)

getShipComparator

public static org.apache.flink.api.common.typeutils.TypeComparatorFactory<?> getShipComparator(Channel channel,
                                                                                               org.apache.flink.api.common.ExecutionConfig executionConfig)