org.apache.hadoop.hive.metastore.columnstats.merge

Class ColumnStatsMergerFactory

java.lang.Object

org.apache.hadoop.hive.metastore.columnstats.merge.ColumnStatsMergerFactory

public class ColumnStatsMergerFactory
extends Object

Method Summary

Modifier and Type	Method and Description
static ColumnStatsMerger<?>	getColumnStatsMerger(ColumnStatisticsObj statsObjNew, ColumnStatisticsObj statsObjOld) Get a statistics merger to merge the given statistics object.
static ColumnStatisticsObj	newColumnStaticsObj(String colName, String colType, ColumnStatisticsData._Fields type)

Methods inherited from class java.lang.Object

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

Method Detail

getColumnStatsMerger

public static ColumnStatsMerger<?> getColumnStatsMerger(ColumnStatisticsObj statsObjNew,
                                                        ColumnStatisticsObj statsObjOld)

Get a statistics merger to merge the given statistics object.

Parameters:

statsObjNew - A statistics object to merger

statsObjOld - A statistics object to merger

Returns:

A ColumnStatsMerger object that can process the requested type

Throws:

IllegalArgumentException - if the column statistics objects are of two different types or if they are of an unknown type

NullPointerException - if statistics object is null

newColumnStaticsObj

public static ColumnStatisticsObj newColumnStaticsObj(String colName,
                                                      String colType,
                                                      ColumnStatisticsData._Fields type)