Package tech.tablesaw.aggregate

Class AnyIntAggregateFunction

java.lang.Object

tech.tablesaw.aggregate.AggregateFunction<Column<?>,Integer>

tech.tablesaw.aggregate.AnyIntAggregateFunction

public abstract class AnyIntAggregateFunction
extends AggregateFunction<Column<?>,Integer>

Partial implementation of AggregateFunction that returns an integer when applied to a column of any type

Constructor Summary

Constructors

Constructor	Description
AnyIntAggregateFunction(String functionName)	Constructs a CountFunction with the given name.

Method Summary

Modifier and Type	Method	Description
boolean	isCompatibleColumn(ColumnType type)	Returns true if the given ColumnType is compatible with this function
ColumnType	returnType()	Returns the ColumnType to be used for the values returned by this function
abstract Integer	summarize(Column<?> column)	Returns an Integer when this function is applied to the given 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

AnyIntAggregateFunction

public AnyIntAggregateFunction(String functionName)

Constructs a CountFunction with the given name. The name is used to name an output column when this function is used by Summarizer

Method Detail

summarize

public abstract Integer summarize(Column<?> column)

Returns an Integer when this function is applied to the given column

Specified by:

summarize in class AggregateFunction<Column<?>,Integer>

isCompatibleColumn

public boolean isCompatibleColumn(ColumnType type)

Returns true if the given ColumnType is compatible with this function

Specified by:

isCompatibleColumn in class AggregateFunction<Column<?>,Integer>

returnType

public ColumnType returnType()

Returns the ColumnType to be used for the values returned by this function

Specified by:

returnType in class AggregateFunction<Column<?>,Integer>