org.apache.hadoop.hive.ql.exec

Class KeyWrapperComparator

java.lang.Object

org.apache.hadoop.hive.ql.exec.KeyWrapperComparator

All Implemented Interfaces:

Comparator<KeyWrapper>

public class KeyWrapperComparator
extends Object
implements Comparator<KeyWrapper>

Comparator for KeyWrapper. This comparator uses the ObjectInspectors provided in the newObjectInspectors array to extract key values from wrapped Object arrays by default. KeyWrapper instances are cloned when KeyWrapper.copyKey() is called. In this case the wrapped key values are deep copied and converted to standard objects using ObjectInspectorUtils.copyToStandardObject(java.util.List<java.lang.Object>, java.lang.Object, org.apache.hadoop.hive.serde2.objectinspector.StructObjectInspector, org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorUtils.ObjectInspectorCopyOption). The comparator uses copyObjectInspectors when extracting key values from clones.

Method Summary

Modifier and Type	Method and Description
int	compare(KeyWrapper key1, KeyWrapper key2)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Method Detail

compare

public int compare(KeyWrapper key1,
                   KeyWrapper key2)

Specified by:

compare in interface Comparator<KeyWrapper>