Package app.babylon.table.column

Class Columns

java.lang.Object

app.babylon.table.column.Columns

public class Columns
extends Object

Constructor Summary

Constructors

Constructor	Description
Columns()

Method Summary

Modifier and Type	Method	Description
static double	aggregate(ColumnDouble cd, Aggregate aggregate)
static BigDecimal	aggregate(ColumnObject<BigDecimal> cd, Aggregate aggregate)
static ColumnObject<String>	asStringColumn(Column column)
static Column	concat(List<Column> columns)
static <T> Map<T,Integer>	frequencyMap(ColumnObject<T> c)
static boolean	isEmpty(Column column)
static boolean	isStringColumn(Column column)
static <T extends Comparable<? super T>> T	max(ColumnObject<T> co)
static <T> ColumnCategorical<T>	newCategorical(ColumnName colName, T value, int size, Class<T> valueClass)
static ColumnBuilder	newColumn(ColumnName colName, Column.Type type)
static ColumnObject<BigDecimal>	newDecimal(ColumnName colName, BigDecimal value, int size)
static ColumnDouble	newDouble(ColumnName colName, double value, int size)
static ColumnInt	newInt(ColumnName colName, int value, int size)
static ColumnObject<String>	newString(ColumnName colName, String value, int size)
static ColumnObject<String>	newStringView(ColumnObject<String> c, ViewIndex rowIndex)
static <T extends Enum<T>> Column	newView(Column c, ViewIndex rowIndex)
static ColumnObject<BigDecimal>	stringToDecimal(Column column)
static <S> ColumnObject<S>	stringToType(Column column, Function<String,S> parser, Class<S> targetClass)
static String	toString(Column column)

Methods inherited from class java.lang.Object

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

Constructor Details

Columns

public Columns()

Method Details

isStringColumn

public static boolean isStringColumn(Column column)

asStringColumn

public static ColumnObject<String> asStringColumn(Column column)

frequencyMap

public static <T> Map<T,Integer> frequencyMap(ColumnObject<T> c)

stringToType

public static <S> ColumnObject<S> stringToType(Column column,
 Function<String,S> parser,
 Class<S> targetClass)

stringToDecimal

public static ColumnObject<BigDecimal> stringToDecimal(Column column)

isEmpty

public static boolean isEmpty(Column column)

newColumn

public static ColumnBuilder newColumn(ColumnName colName,
 Column.Type type)

newDecimal

public static ColumnObject<BigDecimal> newDecimal(ColumnName colName,
 BigDecimal value,
 int size)

newInt

public static ColumnInt newInt(ColumnName colName,
 int value,
 int size)

newString

public static ColumnObject<String> newString(ColumnName colName,
 String value,
 int size)

newCategorical

public static <T> ColumnCategorical<T> newCategorical(ColumnName colName,
 T value,
 int size,
 Class<T> valueClass)

aggregate

public static BigDecimal aggregate(ColumnObject<BigDecimal> cd,
 Aggregate aggregate)

aggregate

public static double aggregate(ColumnDouble cd,
 Aggregate aggregate)

max

public static <T extends Comparable<? super T>> T max(ColumnObject<T> co)

newDouble

public static ColumnDouble newDouble(ColumnName colName,
 double value,
 int size)

newView

public static <T extends Enum<T>> Column newView(Column c,
 ViewIndex rowIndex)

newStringView

public static ColumnObject<String> newStringView(ColumnObject<String> c,
 ViewIndex rowIndex)

concat

public static Column concat(List<Column> columns)

toString

public static String toString(Column column)