de.unknownreality.dataframe.index

Interface Index

All Known Implementing Classes:

TreeIndex

public interface Index

Created by Alex on 27.05.2016.

Method Summary

Modifier and Type	Method and Description
void	clear() Clears this index
boolean	containsColumn(DataFrameColumn column) Returns true if this index contains the specified column
Collection<Integer>	find(Comparable... values) Returns the row number for values used in this index
List<DataFrameColumn>	getColumns() Returns the columns used in this index
String	getName() Returns the name if this index
void	remove(DataRow dataRow) removes a DataRow from this index
void	setUnique(boolean unique) set true if only unique values are allowed for this index
void	update(DataRow dataRow) updates a DataRow in this index

Method Detail

update

void update(DataRow dataRow)

updates a DataRow in this index

Parameters:

dataRow - data row to update

remove

void remove(DataRow dataRow)

removes a DataRow from this index

Parameters:

dataRow - data row to remove

find

Collection<Integer> find(Comparable... values)

Returns the row number for values used in this index

Parameters:

values - indexed row values

Returns:

index of row with the input value

getName

String getName()

Returns the name if this index

Returns:

name of index

setUnique

void setUnique(boolean unique)

set true if only unique values are allowed for this index

Parameters:

unique - allow only unique values

containsColumn

boolean containsColumn(DataFrameColumn column)

Returns true if this index contains the specified column

Parameters:

column - column to tes t

Returns:

true if column is contained in this index

getColumns

List<DataFrameColumn> getColumns()

Returns the columns used in this index

Returns:

columns in this index

clear

void clear()

Clears this index