de.erichseifert.gral.data

Class DataSeries

java.lang.Object

de.erichseifert.gral.data.AbstractDataSource

de.erichseifert.gral.data.DataSeries

All Implemented Interfaces:

DataListener, DataSource, java.io.Serializable, java.lang.Iterable<java.lang.Comparable<?>>

public class DataSeries
extends AbstractDataSource
implements DataListener

Class that represents a view on several columns of a DataSource.

See Also:

DataSource, Serialized Form

Constructor Summary

Constructors

Constructor and Description
DataSeries(DataSource data, int... cols) Constructor without name.
DataSeries(java.lang.String name, DataSource data, int... cols) Constructor that initializes a named data series.

Method Summary

Modifier and Type	Method and Description
void	dataAdded(DataSource source, DataChangeEvent... events) Method that is invoked when data has been added.
void	dataRemoved(DataSource source, DataChangeEvent... events) Method that is invoked when data has been removed.
void	dataUpdated(DataSource source, DataChangeEvent... events) Method that is invoked when data has been updated.
java.lang.Comparable<?>	get(int col, int row) Returns the row with the specified index.
int	getColumnCount() Returns the number of columns of the data source.
int	getRowCount() Returns the number of rows of the data source.
java.lang.String	toString()

Methods inherited from class de.erichseifert.gral.data.AbstractDataSource

addDataListener, getColumn, getColumnStatistics, getColumnTypes, getName, getRecord, getRow, getRowStatistics, getStatistics, isColumnNumeric, iterator, removeDataListener

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

DataSeries

public DataSeries(DataSource data,
                  int... cols)

Constructor without name. The first column will be column 0, the second column 1 and so on, whereas the value of the specified columns is the column number in the data source.

Parameters:

data - Data source

cols - Column numbers

DataSeries

public DataSeries(java.lang.String name,
                  DataSource data,
                  int... cols)

Constructor that initializes a named data series. The first column will be column 0, the second column 1 and so on, whereas the value of the specified columns is the column number in the data source.

Parameters:

name - Descriptive name

data - Data source

cols - Column numbers

Method Detail

get

public java.lang.Comparable<?> get(int col,
                                   int row)

Returns the row with the specified index.

Specified by:

get in interface DataSource

Parameters:

col - index of the column to return

row - index of the row to return

Returns:

the specified value of the data cell

getColumnCount

public int getColumnCount()

Description copied from class: AbstractDataSource

Returns the number of columns of the data source.

Specified by:

getColumnCount in interface DataSource

Overrides:

getColumnCount in class AbstractDataSource

Returns:

number of columns in the data source.

getRowCount

public int getRowCount()

Returns the number of rows of the data source.

Specified by:

getRowCount in interface DataSource

Returns:

number of rows in the data source.

dataAdded

public void dataAdded(DataSource source,
                      DataChangeEvent... events)

Method that is invoked when data has been added. This method is invoked by objects that provide support for DataListeners and should not be called manually.

Specified by:

dataAdded in interface DataListener

Parameters:

source - Data source that has been changed.

events - Optional event object describing the data values that have been added.

dataUpdated

public void dataUpdated(DataSource source,
                        DataChangeEvent... events)

Method that is invoked when data has been updated. This method is invoked by objects that provide support for DataListeners and should not be called manually.

Specified by:

dataUpdated in interface DataListener

Parameters:

source - Data source that has been changed.

events - Optional event object describing the data values that have been updated.

dataRemoved

public void dataRemoved(DataSource source,
                        DataChangeEvent... events)

Method that is invoked when data has been removed. This method is invoked by objects that provide support for DataListeners and should not be called manually.

Specified by:

dataRemoved in interface DataListener

Parameters:

source - Data source that has been changed.

events - Optional event object describing the data values that have been removed.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object