tech.tablesaw.columns

Class AbstractColumn<T>

java.lang.Object

tech.tablesaw.columns.AbstractColumn<T>

All Implemented Interfaces:

Iterable<T>, Comparator<T>, Column<T>

Direct Known Subclasses:

AbstractStringColumn, BooleanColumn, DateColumn, DateTimeColumn, InstantColumn, NumberColumn, TimeColumn

public abstract class AbstractColumn<T>
extends Object
implements Column<T>

Partial implementation of the Column interface

Field Summary

Fields

Modifier and Type	Field and Description
static int	DEFAULT_ARRAY_SIZE

Constructor Summary

Constructors

Constructor and Description
AbstractColumn(ColumnType type, String name)

Method Summary

Modifier and Type	Method and Description
StringColumn	asStringColumn() Returns a StringColumn consisting of the (unformatted) String representation of this column values
abstract Column<T>	emptyCopy() Returns a copy of the receiver with no data.
String	name() Returns the column's name.
Column<T>	setName(String name) Sets the columns name to the given string
String	toString()
ColumnType	type() Returns this column's ColumnType

Methods inherited from class java.lang.Object

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

Methods inherited from interface tech.tablesaw.columns.Column

allMatch, anyMatch, append, append, append, appendCell, appendCell, appendMissing, appendObj, asBytes, asList, asObjectArray, byteSize, clear, columnWidth, contains, copy, count, count, countMissing, countUnique, emptyCopy, filter, first, get, getString, getUnformattedString, inRange, isEmpty, isMissing, isMissing, isNotMissing, lag, last, lead, map, mapInto, max, max, min, min, noneMatch, print, reduce, reduce, removeMissing, rolling, rowComparator, sampleN, sampleX, set, set, set, set, set, setMissing, setMissingTo, size, sortAscending, sortDescending, sorted, subset, summary, title, unique, where

Methods inherited from interface java.lang.Iterable

forEach, iterator, spliterator

Methods inherited from interface java.util.Comparator

compare, comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Field Detail

DEFAULT_ARRAY_SIZE

public static final int DEFAULT_ARRAY_SIZE

See Also:

Constant Field Values

Constructor Detail

AbstractColumn

public AbstractColumn(ColumnType type,
                      String name)

Method Detail

name

public String name()

Description copied from interface: Column

Returns the column's name.

Specified by:

name in interface Column<T>

Returns:

name as String

setName

public Column<T> setName(String name)

Description copied from interface: Column

Sets the columns name to the given string

Specified by:

setName in interface Column<T>

Parameters:

name - The new name MUST be unique for any table containing this column

Returns:

this Column to allow method chaining

type

public ColumnType type()

Description copied from interface: Column

Returns this column's ColumnType

Specified by:

type in interface Column<T>

Returns:

ColumnType

emptyCopy

public abstract Column<T> emptyCopy()

Description copied from interface: Column

Returns a copy of the receiver with no data. The column name and type are the same.

Specified by:

emptyCopy in interface Column<T>

Returns:

a empty copy of Column

toString

public String toString()

Overrides:

toString in class Object

asStringColumn

public StringColumn asStringColumn()

Description copied from interface: Column

Returns a StringColumn consisting of the (unformatted) String representation of this column values

Specified by:

asStringColumn in interface Column<T>

Returns:

a StringColumn built using the column Column.getUnformattedString(int) method