tech.tablesaw.columns

Class AbstractColumn<T,C extends AbstractColumn<T,C>>

java.lang.Object

tech.tablesaw.columns.AbstractColumn<T,C>

All Implemented Interfaces:

Column

Direct Known Subclasses:

BooleanColumn, DateColumn, DateTimeColumn, DoubleColumn, StringColumn, TimeColumn

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

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
abstract C	append(T val)
int	columnWidth() Returns the width of the column in characters, for printing
abstract C	emptyCopy() Returns a copy of the receiver with no data.
C	fillMissing(C other) Create a copy of this column where missing values are replaced with the corresponding value in the given column
C	fillMissing(T defaultVal) Create a copy of this column where missing values are replaced with the given default value
abstract T	getObject(int i)
String	name() Returns the column's name.
String	print() TODO(lwhite): Print n from the top and bottom, like a table;
abstract C	set(int i, T val)
Column	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

append, appendCell, appendCell, appendMissing, asBytes, asDoubleArray, asObjectArray, byteSize, clear, copy, countMissing, countUnique, create, emptyCopy, first, getDouble, getString, getUnformattedString, inRange, isEmpty, isMissing, isMissing, isNotMissing, lag, last, lead, removeMissing, rolling, rowComparator, rows, sampleN, sampleX, size, sortAscending, sortDescending, subset, summarizeIf, summary, title, unique, where

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

Returns:

name as String

setName

public Column setName(String name)

Description copied from interface: Column

Sets the columns name to the given string

Specified by:

setName in interface Column

Parameters:

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

Returns:

this Column to allow method chaining

columnWidth

public int columnWidth()

Returns the width of the column in characters, for printing

Specified by:

columnWidth in interface Column

type

public ColumnType type()

Description copied from interface: Column

Returns this column's ColumnType

Specified by:

type in interface Column

Returns:

ColumnType

emptyCopy

public abstract C 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

Returns:

a empty copy of Column

fillMissing

public C fillMissing(T defaultVal)

Create a copy of this column where missing values are replaced with the given default value

fillMissing

public C fillMissing(C other)

Create a copy of this column where missing values are replaced with the corresponding value in the given column

append

public abstract C append(T val)

set

public abstract C set(int i,
                      T val)

getObject

public abstract T getObject(int i)

Specified by:

getObject in interface Column

toString

public String toString()

Overrides:

toString in class Object

print

public String print()

Description copied from interface: Column

TODO(lwhite): Print n from the top and bottom, like a table;

Specified by:

print in interface Column