org.apache.flink.api.java.summarize.aggregation

类 StringSummaryAggregator

java.lang.Object

org.apache.flink.api.java.summarize.aggregation.StringSummaryAggregator

所有已实现的接口:

Serializable, Aggregator<String,StringColumnSummary>

@Internal
public class StringSummaryAggregator
extends Object
implements Aggregator<String,StringColumnSummary>

Aggregator that calculates statistics for String values.

另请参阅:

序列化表格

构造器概要

构造器

构造器和说明
StringSummaryAggregator()

方法概要

限定符和类型	方法和说明
void	aggregate(String value) Add a value to the current aggregation.
void	combine(Aggregator<String,StringColumnSummary> otherSameType) Combine two aggregations of the same type.
StringColumnSummary	result() Provide the final result of the aggregation.

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

StringSummaryAggregator

public StringSummaryAggregator()

方法详细资料

aggregate

public void aggregate(String value)

从接口复制的说明: Aggregator

Add a value to the current aggregation.

指定者:

aggregate 在接口中 Aggregator<String,StringColumnSummary>

combine

public void combine(Aggregator<String,StringColumnSummary> otherSameType)

从接口复制的说明: Aggregator

Combine two aggregations of the same type.

(Implementations will need to do an unchecked cast).

指定者:

combine 在接口中 Aggregator<String,StringColumnSummary>

result

public StringColumnSummary result()

从接口复制的说明: Aggregator

Provide the final result of the aggregation.

指定者:

result 在接口中 Aggregator<String,StringColumnSummary>