Data manipulation library. Plus de détails...

Fonctions membres publiques
	DataFrame (Path path, Character csvDelimiter, Class< H > classParameterH, Class< T > classParameterT) throws IOException
	Read CSV file for a given file path.

	DataFrame (Path path, Class< H > classParameterH, Class< T > classParameterT) throws IOException
	Read CSV file for a given file path.

	DataFrame (List< H > header, List< List< T > > rows, Class< H > classParameterH, Class< T > classParameterT)
	Build a DataFrame from header and rows.

	DataFrame (HashMap< H, List< T > > content, Integer[] indexes, Class< H > classParameterH, Class< T > classParameterT)
	Build a DataFrame from content Map and indexes.

	DataFrame (HashMap< H, List< T > > content, Class< H > classParameterH, Class< T > classParameterT)
	Build a DataFrame from content Map.

Integer[]	getIndexes ()
	Getter for the DataFrame index array.

void	setIndexes (Integer[] indexes)
	Setter for the DataFrame index array.

HashMap< H, List< T > >	getContent ()
	Getter for the DataFrame content map.

void	setContent (HashMap< H, List< T > > content)
	Setter for the DataFrame Content map.

DataFrame< H, T >	selectDataFrameByIndex (Integer[] indexes) throws Exception
	Select a part of the current DataFrame by using indexes and return a new DataFrame.

DataFrame< H, T >	selectDataFrameByColumn (List< H > columns) throws Exception
	Select a part of the current DataFrame by using columns and return a new DataFrame.

String	toStringDisplay ()
	Display the DataFrame in a well-aligned table format, including predefined indices if available.

String	toStringDisplayByIndex (Integer[] indexes) throws Exception
	Display in a table the given dataframe for the given indexes.

String	toStringDisplayByHeader (List< H > columnFilter) throws Exception
	Display in a table the given dataframe for the given indexes.

String	toStringPartialDisplay (int nbLines, boolean mode)
	Display in a table the given dataframe.

boolean	hasIndex ()
	Check if the current DataFrame index are initialised.

double	sum (H header)
	Calculate sum of a column.

double	average (H header)
	Calculate average of a column.

T	min (H header, Comparator< T > comparator)
	Find minimum value in a column.

T	max (H header, Comparator< T > comparator)
	Find maximum value in a column.

DataFrame< H, T >	selectAdvanced (Map< H, Predicate< T > > criteria) throws Exception
	Advanced selection based on custom predicates per column that filters entire rows.

Fonctions membres privées
void	buildTableDelimiter (StringBuilder builder, Map< H, Integer > columnWidths, int indexWidth, boolean hasIndex)
	Builds the delimiter line for the table based on column widths, including index if exists.

int	getIndexWidth ()
	Retrieve max the String length of the current index.

void	checkIndexInput (Integer[] indexes) throws Exception
	Run a checklist to verify the array of index compare to the saved index array.

void	checkHeaderInput (List< H > header) throws Exception
	Run a checklist to verify the list of header compare to the saved header.

Integer	retrieveIndexWhenAtDataFramePosition (Integer[] indexes, int i)
	Get index at referenced position.

T	convertValueT (String input)

H	convertValueH (String input)

Attributs privés
final Class< T >	classParameterT

final Class< H >	classParameterH

Integer[]	indexes

HashMap< H, List< T > >	content = new HashMap<>()

Description détaillée

Data manipulation library.

Paramètres

<H>	Column header type
<T>	Content type

Documentation des constructeurs et destructeur

◆ DataFrame() [1/5]

org.example.DataFrame< H, T extends Number >.DataFrame	(	Path	path,
		Character	csvDelimiter,
		Class< H >	classParameterH,
		Class< T >	classParameterT ) throws IOException

inline

Read CSV file for a given file path.

Paramètres

path file path

Exceptions

IOException If unable to open the file

Note: csv default delimiter character is ;

◆ DataFrame() [2/5]

org.example.DataFrame< H, T extends Number >.DataFrame	(	Path	path,
		Class< H >	classParameterH,
		Class< T >	classParameterT ) throws IOException

inline

Read CSV file for a given file path.

Paramètres

path file path

Exceptions

IOException If unable to open the file

Note: csv default delimiter character is ;

◆ DataFrame() [3/5]

org.example.DataFrame< H, T extends Number >.DataFrame	(	List< H >	header,
		List< List< T > >	rows,
		Class< H >	classParameterH,
		Class< T >	classParameterT )

inline

Build a DataFrame from header and rows.

Paramètres

header	list of header to declare
rows	list of rows to declare

◆ DataFrame() [4/5]

org.example.DataFrame< H, T extends Number >.DataFrame	(	HashMap< H, List< T > >	content,
		Integer[]	indexes,
		Class< H >	classParameterH,
		Class< T >	classParameterT )

inline

Build a DataFrame from content Map and indexes.

Paramètres

content	Data frame content shaped has a map
indexes	Data frame indexes

◆ DataFrame() [5/5]

org.example.DataFrame< H, T extends Number >.DataFrame	(	HashMap< H, List< T > >	content,
		Class< H >	classParameterH,
		Class< T >	classParameterT )

inline

Build a DataFrame from content Map.

Paramètres

content Data frame content shaped has a map

Documentation des fonctions membres

◆ average()

double org.example.DataFrame< H, T extends Number >.average ( H header )

inline

Calculate average of a column.

Paramètres

header selected column

◆ buildTableDelimiter()

void org.example.DataFrame< H, T extends Number >.buildTableDelimiter	(	StringBuilder	builder,
		Map< H, Integer >	columnWidths,
		int	indexWidth,
		boolean	hasIndex )

inlineprivate

Builds the delimiter line for the table based on column widths, including index if exists.

Paramètres

builder	StringBuilder to which the delimiter line is appended.
columnWidths	Map with the widths for each column.
indexWidth	Width of the index column, if indices are used.
hasIndex	Boolean indicating if indices are present.

◆ checkHeaderInput()

void org.example.DataFrame< H, T extends Number >.checkHeaderInput ( List< H > header ) throws Exception

inlineprivate

Run a checklist to verify the list of header compare to the saved header.

Paramètres

header list to check

Exceptions

Exception check failed with reason

◆ checkIndexInput()

void org.example.DataFrame< H, T extends Number >.checkIndexInput ( Integer[] indexes ) throws Exception

inlineprivate

Run a checklist to verify the array of index compare to the saved index array.

Paramètres

indexes array to check

Exceptions

Exception check failed with reason

◆ convertValueH()

H org.example.DataFrame< H, T extends Number >.convertValueH ( String input )

inlineprivate

◆ convertValueT()

T org.example.DataFrame< H, T extends Number >.convertValueT ( String input )

inlineprivate

◆ getContent()

HashMap< H, List< T > > org.example.DataFrame< H, T extends Number >.getContent ( )

inline

Getter for the DataFrame content map.

Renvoie: map of element by column header

◆ getIndexes()

Integer[] org.example.DataFrame< H, T extends Number >.getIndexes ( )

inline

Getter for the DataFrame index array.

Renvoie: indexes array

◆ getIndexWidth()

int org.example.DataFrame< H, T extends Number >.getIndexWidth ( )

inlineprivate

Retrieve max the String length of the current index.

Renvoie: max index string length

◆ hasIndex()

boolean org.example.DataFrame< H, T extends Number >.hasIndex ( )

inline

Check if the current DataFrame index are initialised.

Renvoie: true if the index array isn't null nor empty

◆ max()

T org.example.DataFrame< H, T extends Number >.max	(	H	header,
		Comparator< T >	comparator )

inline

Find maximum value in a column.

Paramètres

header selected column

◆ min()

T org.example.DataFrame< H, T extends Number >.min	(	H	header,
		Comparator< T >	comparator )

inline

Find minimum value in a column.

Paramètres

header selected column

◆ retrieveIndexWhenAtDataFramePosition()

Integer org.example.DataFrame< H, T extends Number >.retrieveIndexWhenAtDataFramePosition	(	Integer[]	indexes,
		int	i )

inlineprivate

Get index at referenced position.

Paramètres

indexes	list of index
i	current position

Renvoie: found index at position, null otherwise

◆ selectAdvanced()

DataFrame< H, T > org.example.DataFrame< H, T extends Number >.selectAdvanced ( Map< H, Predicate< T > > criteria ) throws Exception

inline

Advanced selection based on custom predicates per column that filters entire rows.

Paramètres

criteria Map of headers to their respective predicates for selection.

Renvoie: A new DataFrame with only the rows that match all the criteria for any mentioned column.

Exceptions

Exception If there are issues with the headers.

◆ selectDataFrameByColumn()

DataFrame< H, T > org.example.DataFrame< H, T extends Number >.selectDataFrameByColumn ( List< H > columns ) throws Exception

inline

Select a part of the current DataFrame by using columns and return a new DataFrame.

Paramètres

columns to filter on

Renvoie: selected DataFrame

Exceptions

Exception Bad column selection

◆ selectDataFrameByIndex()

DataFrame< H, T > org.example.DataFrame< H, T extends Number >.selectDataFrameByIndex ( Integer[] indexes ) throws Exception

inline

Select a part of the current DataFrame by using indexes and return a new DataFrame.

Paramètres

indexes to filter on

Renvoie: selected DataFrame

Exceptions

Exception Bad index selection

◆ setContent()

void org.example.DataFrame< H, T extends Number >.setContent ( HashMap< H, List< T > > content )

inline

Setter for the DataFrame Content map.

Paramètres

content map of element by column header

◆ setIndexes()

void org.example.DataFrame< H, T extends Number >.setIndexes ( Integer[] indexes )

inline

Setter for the DataFrame index array.

Paramètres

indexes array

◆ sum()

double org.example.DataFrame< H, T extends Number >.sum ( H header )

inline

Calculate sum of a column.

Paramètres

header selected column

◆ toStringDisplay()

String org.example.DataFrame< H, T extends Number >.toStringDisplay ( )

inline

Display the DataFrame in a well-aligned table format, including predefined indices if available.

Renvoie: String representing the DataFrame in a table format.

Example of the result:
+---+----+----+
|   | a  | c  |
+---+----+----+
| 1 | 10 | 30 |
+---+----+----+
| 2 | 15 | 35 |
+---+----+----+

◆ toStringDisplayByHeader()

String org.example.DataFrame< H, T extends Number >.toStringDisplayByHeader ( List< H > columnFilter ) throws Exception

inline

Display in a table the given dataframe for the given indexes.

Renvoie: String result to display

Example of result:
+---+----+----+
|   | a  | c  |
+---+----+----+
| 1 | 10 | 30 |
+---+----+----+
| 2 | 15 | 35 |
+---+----+----+

◆ toStringDisplayByIndex()

String org.example.DataFrame< H, T extends Number >.toStringDisplayByIndex ( Integer[] indexes ) throws Exception

inline

Display in a table the given dataframe for the given indexes.

Renvoie: String result to display

Example of result:
+---+----+----+
|   | a  | c  |
+---+----+----+
| 1 | 10 | 30 |
+---+----+----+
| 2 | 15 | 35 |
+---+----+----+

◆ toStringPartialDisplay()

String org.example.DataFrame< H, T extends Number >.toStringPartialDisplay	(	int	nbLines,
		boolean	mode )

inline

Display in a table the given dataframe.

Paramètres

nbLines	number of lines to display
mode	true = first n lines // false = last n lines

Renvoie: String result to display

Example of result:
+---+----+----+
|   | a  | c  |
+---+----+----+
| 1 | 10 | 30 |
+---+----+----+
| 2 | 15 | 35 |
+---+----+----+

Documentation des données membres

◆ classParameterH

final Class<H> org.example.DataFrame< H, T extends Number >.classParameterH

private

◆ classParameterT

final Class<T> org.example.DataFrame< H, T extends Number >.classParameterT

private

◆ content

HashMap<H, List<T> > org.example.DataFrame< H, T extends Number >.content = new HashMap<>()

private

◆ indexes

Integer [] org.example.DataFrame< H, T extends Number >.indexes

private

La documentation de cette classe a été générée à partir du fichier suivant :

src/main/java/org/example/DataFrame.java

Fonctions membres publiques

Fonctions membres privées

Attributs privés

Description détaillée

Documentation des constructeurs et destructeur

◆ DataFrame() [1/5]

◆ DataFrame() [2/5]

◆ DataFrame() [3/5]

◆ DataFrame() [4/5]

◆ DataFrame() [5/5]

Documentation des fonctions membres

◆ average()

◆ buildTableDelimiter()

◆ checkHeaderInput()

◆ checkIndexInput()

◆ convertValueH()

◆ convertValueT()

◆ getContent()

◆ getIndexes()

◆ getIndexWidth()

◆ hasIndex()

◆ max()

◆ min()

◆ retrieveIndexWhenAtDataFramePosition()

◆ selectAdvanced()

◆ selectDataFrameByColumn()

◆ selectDataFrameByIndex()

◆ setContent()

◆ setIndexes()

◆ sum()

◆ toStringDisplay()

◆ toStringDisplayByHeader()

◆ toStringDisplayByIndex()

◆ toStringPartialDisplay()

Documentation des données membres

◆ classParameterH

◆ classParameterT

◆ content

◆ indexes