org.apache.flink.table.catalog.stats

类 CatalogColumnStatisticsDataBase

java.lang.Object

org.apache.flink.table.catalog.stats.CatalogColumnStatisticsDataBase

直接已知子类:

CatalogColumnStatisticsDataBinary, CatalogColumnStatisticsDataBoolean, CatalogColumnStatisticsDataDate, CatalogColumnStatisticsDataDouble, CatalogColumnStatisticsDataLong, CatalogColumnStatisticsDataString

public abstract class CatalogColumnStatisticsDataBase
extends Object

Column statistics value base class.

构造器概要

构造器

构造器和说明
CatalogColumnStatisticsDataBase(Long nullCount)
CatalogColumnStatisticsDataBase(Long nullCount, Map<String,String> properties)

方法概要

限定符和类型	方法和说明
abstract CatalogColumnStatisticsDataBase	copy() Create a deep copy of "this" instance.
Long	getNullCount()
Map<String,String>	getProperties()

从类继承的方法 java.lang.Object

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

构造器详细资料

CatalogColumnStatisticsDataBase

public CatalogColumnStatisticsDataBase(Long nullCount)

CatalogColumnStatisticsDataBase

public CatalogColumnStatisticsDataBase(Long nullCount,
                                       Map<String,String> properties)

方法详细资料

getNullCount

public Long getNullCount()

getProperties

public Map<String,String> getProperties()

copy

public abstract CatalogColumnStatisticsDataBase copy()

Create a deep copy of "this" instance.

返回:

a deep copy