Package tech.tablesaw.columns.strings

Class AbstractStringColumn<C extends AbstractColumn<C,String>>

java.lang.Object

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

tech.tablesaw.columns.strings.AbstractStringColumn<C>

All Implemented Interfaces:

Iterable<String>, Comparator<String>, CategoricalColumn<String>, Column<String>, StringFilters, StringMapFunctions, StringReduceUtils, FilterSpec<Selection>, StringFilterSpec<Selection>

Direct Known Subclasses:

StringColumn, TextColumn

public abstract class AbstractStringColumn<C extends AbstractColumn<C,String>>
extends AbstractColumn<C,String>
implements CategoricalColumn<String>, StringFilters, StringMapFunctions, StringReduceUtils

Abstract super class for Text like columns.

Field Summary

Fields inherited from class tech.tablesaw.columns.AbstractColumn

DEFAULT_ARRAY_SIZE, DEFAULT_COLUMN_TYPE_MISMATCH_MESSAGE

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractStringColumn(ColumnType type, String name, AbstractColumnParser<String> parser)	Constructs a column of the given ColumnType, name, and parser

Method Summary

Modifier and Type	Method	Description
Column<String>	append(Column<String> column, int row)	Appends the value at the given row in the given column to the bottom of this column and return this column
List<String>	bottom(int n)	Returns the smallest ("bottom") n values in the column
int	byteSize()	Returns the width of a cell in this column, in bytes.
int	compare(String o1, String o2)
StringColumnFormatter	getPrintFormatter()	Returns the current StringColumnFormatter.
String	getString(int row)	Returns a string representation of the value at the given row.
String	getUnformattedString(int row)	Returns a String representation of the value at index r, without any formatting applied
Column<String>	set(int row, Column<String> column, int sourceRow)	Sets the value at row to the value at sourceRow in the given column and return this column
void	setPrintFormatter(StringColumnFormatter formatter)	Sets an StringColumnFormatter which will be used to format the display of data from this column when it is printed (using, for example, Table:print()) and optionally when written to a text file like a CSV.
List<String>	top(int n)	Returns the largest ("top") n values in the column

Methods inherited from class tech.tablesaw.columns.AbstractColumn

asStringColumn, filter, first, indexOf, inRange, last, map, max, min, name, parser, sampleN, sampleX, set, set, setName, setParser, sorted, subset, toString, type

Methods inherited from class java.lang.Object

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

Methods inherited from interface tech.tablesaw.api.CategoricalColumn

countByCategory

Methods inherited from interface tech.tablesaw.columns.Column

allMatch, anyMatch, append, append, appendCell, appendCell, appendMissing, appendObj, asBytes, asList, asObjectArray, asSet, asStringColumn, clear, columnWidth, contains, copy, count, count, countMissing, countUnique, emptyCopy, emptyCopy, equals, filter, first, indexOf, inRange, interpolate, isEmpty, isMissing, lag, last, lead, map, map, mapInto, max, max, min, min, name, noneMatch, parser, print, reduce, reduce, removeMissing, rolling, rowComparator, sampleN, sampleX, set, set, set, set, set, setMissing, setMissingTo, setName, setParser, size, sortAscending, sortDescending, sorted, subset, summary, title, type, unique, valueHash, where

Methods inherited from interface java.util.Comparator

equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Methods inherited from interface java.lang.Iterable

forEach, iterator, spliterator

Methods inherited from interface tech.tablesaw.columns.strings.StringFilters

containsString, endsWith, equalsIgnoreCase, equalsIgnoreCase, eval, eval, eval, eval, get, isAlpha, isAlphaNumeric, isEmptyString, isEqualTo, isEqualTo, isIn, isIn, isIn, isLongerThan, isLowerCase, isMissing, isNotEqualTo, isNotEqualTo, isNotIn, isNotIn, isNotIn, isNotMissing, isNumeric, isShorterThan, isUpperCase, lengthEquals, matchesRegex, startsWith, startsWith

Methods inherited from interface tech.tablesaw.columns.strings.StringMapFunctions

abbreviate, capitalize, commonPrefix, commonSuffix, concatenate, concatenate, countTokens, distance, format, join, length, lowerCase, padEnd, padStart, parseDouble, parseFloat, parseInt, repeat, replaceAll, replaceAll, replaceFirst, substring, substring, tokenizeAndRemoveDuplicates, tokenizeAndSort, tokenizeAndSort, tokens, trim, uniqueTokens, upperCase

Methods inherited from interface tech.tablesaw.columns.strings.StringReduceUtils

appendAll, appendAll

Constructor Details

AbstractStringColumn

protected AbstractStringColumn(ColumnType type,
 String name,
 AbstractColumnParser<String> parser)

Constructs a column of the given ColumnType, name, and parser

Method Details

setPrintFormatter

public void setPrintFormatter(StringColumnFormatter formatter)

Sets an StringColumnFormatter which will be used to format the display of data from this column when it is printed (using, for example, Table:print()) and optionally when written to a text file like a CSV.

getPrintFormatter

public StringColumnFormatter getPrintFormatter()

Returns the current StringColumnFormatter.

getString

public String getString(int row)

Returns a string representation of the value at the given row.

Specified by:

getString in interface Column<C extends AbstractColumn<C,String>>

Parameters:

row - The index of the row.

Returns:

value as String

getUnformattedString

public String getUnformattedString(int row)

Returns a String representation of the value at index r, without any formatting applied

Specified by:

getUnformattedString in interface Column<C extends AbstractColumn<C,String>>

top

public List<String> top(int n)

Returns the largest ("top") n values in the column

Parameters:

n - The maximum number of records to return. The actual number will be smaller if n is greater than the number of observations in the column

Returns:

A list, possibly empty, of the largest observations

bottom

public List<String> bottom(int n)

Returns the smallest ("bottom") n values in the column

Parameters:

n - The maximum number of records to return. The actual number will be smaller if n is greater than the number of observations in the column

Returns:

A list, possibly empty, of the smallest n observations

append

public Column<String> append(Column<String> column,
 int row)

Appends the value at the given row in the given column to the bottom of this column and return this column

Specified by:

append in interface Column<C extends AbstractColumn<C,String>>

set

public Column<String> set(int row,
 Column<String> column,
 int sourceRow)

Sets the value at row to the value at sourceRow in the given column and return this column

Specified by:

set in interface Column<C extends AbstractColumn<C,String>>

byteSize

public int byteSize()

Returns the width of a cell in this column, in bytes.

Specified by:

byteSize in interface Column<C extends AbstractColumn<C,String>>

Returns:

width in bytes

compare

public int compare(String o1,
 String o2)

Specified by:

compare in interface Comparator<C extends AbstractColumn<C,String>>