Package tech.tablesaw.aggregate

Class StringFunction

java.lang.Object

tech.tablesaw.aggregate.AggregateFunction<StringColumn,String>

tech.tablesaw.aggregate.StringFunction

public abstract class StringFunction
extends AggregateFunction<StringColumn,String>

A partial implementation of aggregate functions to summarize over a date column

Constructor Summary

Constructors

Constructor	Description
StringFunction(String name)

Method Summary

Modifier and Type	Method	Description
boolean	isCompatibleColumn(ColumnType type)
ColumnType	returnType()
abstract String	summarize(StringColumn column)

Methods inherited from class tech.tablesaw.aggregate.AggregateFunction

functionName, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

StringFunction

public StringFunction(String name)

Method Detail

summarize

public abstract String summarize(StringColumn column)

Specified by:

summarize in class AggregateFunction<StringColumn,String>

isCompatibleColumn

public boolean isCompatibleColumn(ColumnType type)

Specified by:

isCompatibleColumn in class AggregateFunction<StringColumn,String>

returnType

public ColumnType returnType()

Specified by:

returnType in class AggregateFunction<StringColumn,String>